Psru belt reduction drive. (See attached diagram of Wright R3350).
PSRU, Propeller Speed Reduction Unit, Prop re-drive, Prop redrive, Propeller redrive, Propeller re-drive, Rotax, Rotax PSRU, Rotax redrive, Rotax re-drive, Cyunna, Hirth May 21, 2006 · When I was in the USAF the C-130's that I worked on used a turbine engine (Alison t-56a) with a 13:1 reduction drive PSRU never had any redrive failures. Frame of redrive made of aluminum . 34) utilizing two helical cut gears mounted on shafting which is supported by ball bearings at each end. rotax РМЗ arctic cat volkswagen honda bmw suzuki subaru toyota ВАЗ Москвич; Виробник: 447, 462, 467, 503, 532, 550, 582, 583, 670: 500, 550, 551 Good for 25 hp, 45 mph cruise speed and 2. mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 Dec 29, 2019 · Built from plans- 1. mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 or 71lbs with recoil start reduction unit and full exhaust. Price Reduced from $500 to $400, buyer pays shipping. mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 The PSRU is a Northwest Aero products psru with a 2:1 belt reduction drive (They are no longer in production) Northwest Aero Products - Propeller Speed Reduction Units (PRSUs) Ol' Joint Jigger - Tube and Pipe. We would like to show you a description here but the site won’t allow us. These gear drive reduction units can be fitted with a metallic chip detector and temperature sensor are constantly monitored by airplanes electronics, and alerts mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 Jan 3, 2024 · Chain Drive Design Issues The Hy-Vo chain drive that EPI designed under contract, and why the typical Hy-Vo Propeller Reduction Drive drive is undesirable. SDS EM-2: Aircraft. Redrive / Reduction Drive For ultralight aircraft engines. (Drew's stock) Feb 13, 2013 · It is a small displacement, high revving engine so it requires a Propeller Speed Reduction Unit (PSRU, gearbox, reduction drive, etc…). Never been used, just bolted together for fabrication purposes. Does anyone have any info as to where I might be able to buy a cog belt PSRU for my RENESIS engine? Also if anyone has done a rotary with a cog belt PSRU I would love to talk to them. Including singles: Briggs & Stratton, Predator 670, Kohler, Subaru, Honda and more - GK, Odes and LZmoto - Honda Silver Wing - Working on: Yamaha Phazer - Suzuki Geo - and more. The torque is transmitted by a fully machined shaft which is driven by an extension of the flywheel bolts. Auto PSRU’s Gearbox and engine-package specialist Auto PSRU’s likes to source its Mazda 13B naturally aspirated and turbo normalized engines from American Rotary Engine (see previous listing). I can give info if needed. Testing showed these reduction units to be very strong and lightweight, yet they yielded outstanding and unmatched performance. 8" between the center of the crank and the center of the propeller shaft, which gives you a great improvement in handling by lowering the center of mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 Jun 26, 2012 · PSRU’s appear to be quite simple, but they actually involve several complex subjects, some of which seem to have been overlooked in certain PSRU products. Redrive PSRU Gearbox Reduction Drive Belt Redrive in Poland used to make them but they don't seem to anymore. The helicopter in which I got my rotorcraft rating (Hughes 300) used a matched set of 6 (or maybe 8) V-belts to connect the Lycoming HIO-360 to the drive system, and a mechanically-actuated idler / tensioner to provide the drive clutch function. the given engine wouldnt be able to turn the prop at that speed where it produces the rated power therefore can not develop the power its capable of. 476 are available. 0 Subaru engines for aircraft, hovercraft, etc. Why a Prop Shaft Reduction Unit - PSRU? Lower prop speed to increase efficiency - especially with 3 and 4 blade props. They use a pair of cogged belts and are not 2 arms and a leg to do. 09, 2. What is the total ratio of this belt and pulley drive? Ratio = 6 / 2 Mar 20, 2013 · The 800cc SmartCar engine (above) with belt-drive PSRU, radiator and plumbing neatly tucked into the cowling. We are proud to introduce our new Series 3 poly-v reduction units specifically designed for the high-power engines available in our Premium Engine packages. Reduction drives for light and ultralight aviation. They include toothed-belt drives, link-chain drives, planetary reductions, helical and spur gear reductions. ) are unable to maintain the correct belt preload in the dramatically-varying Belt Reduction Drive R-K24 can be used on airboat, hovercraft, aerosleighs and ultralight aircraft. 88 ratios. On EPI PSRU's, the propeller governor drive and plumbing are tightly integrated into the reduction unit design, using a pair of crossed helical gears to drive the governor and a proven reliable servo-pressure transfer mechanism from the (fixed) housing to the (moving Dec 30, 2020 · The LS-3 engine is coupled to their SD550 gear reduction unit featuring a centrifugal clutch for reduced starter and other kickback loads. The driven pulley is 6 inches in radius and is attached to a paddle that churns butter. 56 ratio) and a distance of 8. Foxcon don't make a 2:1 + the price quoted was AU$4000. The information here has been compiled from the RAF Website as well as "Kitplanes" (KP) magazine. Tractor configuration with belt drive or pusher with gear drive. No oil change needed, just need to check The CH-2 airboat drive unit is our 4" wide belt drive system. Direct Drive Coupling also available. Powersport Aviation, Inc. mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 Oct 18, 2013 · Tracy Cooks PSRU 2. It’s hard to get in and count every single tooth as it sits so it could be one tooth either side of 2:1. Drive shaft bearing load is shared between the engine's shaft bearings on one side, and the PSRU needle bearings on the gearbox side. PSRU Belt reduction drive for Honda moto bike engine - YouTube Purchase Reduction drive unit PSRU ultralight trike powered parachute PPC Paramotor in Fresno, California, United States, for US $450. mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 Oct 2, 2010 · FOB China USD 740. The purpose of installing a reduction unit on your aircraft is primarily for efficiency reasons. 1. 6 reduction ratio. Oct 24, 2007 · no you cant make power through gear reduction but you can multiply torque. Castech has been involved with the sport aviation industry since 1999 with exports to Australia, South Africa, Europe and North America. 6561 44th St. The RAF PSRU incorporates a belt drive. I also a Belt reduction off of a Ford 3. Questions: Which type is best? Belt? Geared? Chain? If belt drive is it better to do a single large belt or multiple smaller belts? what size belt mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 Jan 2, 2013 · The reduction unit or psru (prop speed reduction unit) uses the rear planet gears from a ford c-6 automatic transmmision. Jun 1, 2019 · Title sez it all. Reduction drives for light and ultralight aviation - BeltDrive. mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 rotax РМЗ arctic cat volkswagen honda bmw suzuki subaru toyota ВАЗ Москвич; Виробник: 447, 462, 467, 503, 532, 550, 582, 583, 670: 500, 550, 551 Aug 10, 2007 · OK, if re-drive manufacture were truly regulated by a governing body, then costs would be even more through the roof than they are right now for a gear box or a belt drive. A duel electronic FADEC and dry sump. We have adapted a proven belt reduction drive to this engine. com/watch?v=kPwxyh6u118Auto PSRU's explains how a GM LS1 or LS3 coupled with thier propellor speed reduction un May 24, 2020 · This is a Kawasaki 440 engine, outfitted with a J-Bird Ultralight Engines Reduction Drive Unit and Warp Drive 60" Propeller (cut down from the model below), created in SolidWorks 2019. mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 Aug 18, 2016 · Most powered parachute, ultralight, and other micro-aviation engines use belt drive reduction, but as such engines grow in size, cylinders, and power, they can sprout geared drives. 73, 2. Hit me wit yo' best shot! mtnridge@caribe. This is the power plant for a zenith ch701. 13. It's a great power package for a mini-airboat or hovercraft. The drive units we manufacture carry a 100 hour factory warranty. Attachments 800px-Allison_T56_turboprop_for_C-130_2007. Leave a Reply Cancel reply mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 rotax РМЗ arctic cat volkswagen honda bmw suzuki subaru toyota ВАЗ Москвич; Виробник: 447, 462, 467, 503, 532, 550, 582, 583, 670: 500, 550, 551 The belts for CH-3 Longbelt models are 5" wide and can use HPPD Plus or Blackhawk belts which are rated 60% stronger than the standard HPPD Plus style. RFI also offers cog belt reduction drives for the EG33. 62 to 1 ratio. This is a perfect setup for mini airboats, jon boats, and bowfishing boats. Torque Master also has developed a toothed-belt propeller speed reduction unit (PSRU) that utilizes Goodyear Eagle belts and weighs 11#. Automotive automatic transmissions all use planetary gears, and some of the old large radial engines also used them. 84:1 belt drive PSRU for Subaru EA81. While it looks like some commercial units I believe it to be a one-off which carries its own risks but could be a good starting point for your own belt PSRU ideas. Bidders pay $45 shipping/packaging. The power speed reduction unit (PSRU) is the device that is loaded by the generating unit and the thrusters. May 8, 2024 · With belt-PSRU’s, typically, the life of the belt is limited to two or three hundred hours at the loads imposed by a piston engine, which can affect reliability considerations; Fixed-center, belt-PSRU’s without a preloaded idler system (spring, hydraulic, etc. The Autoflight PSRU has a 2. 3 pine laminations - balanced. Creation of three-dimensional models for processing parts on CNC machines. webp Dec 3, 2017 · There are a number of companies making accessories for the EJ/EG line of Subaru engines. mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 rotax РМЗ arctic cat volkswagen honda bmw suzuki subaru toyota ВАЗ Москвич; Виробник: 447, 462, 467, 503, 532, 550, 582, 583, 670: 500, 550, 551 Our Reduction Drive works very well with Ultra-Props! ===== Belt Reduction Drive Installation Torque Specifications: (4) 3/8 inch Backing Plate Mounting SS bolts-15 ft. The first unit is applied to the DLE 55 and the DLE 111 twin. [1] This allows the use of small displacement internal combustion engines to turn aircraft propellers within an efficient speed range. IIRC. 21:1, 2. 43:1 reduction to its SAE 2 propeller flange (the same one found on a typical Lycoming). The chart above shows our most popular sizes and ratios that have been developed for our customers request. INTRODUCTION In PSRU (Power Speed Reduction Unit) drive system, gears reduce/increase speed, change the direction of drive, and split/combine torque paths. 47:1 and 2. 26:1 reduction and an independent system that lubricates the gearbox and controls the propeller. 68 and 2. I would like to build one for around a 125-150 HP car engine conversion. Jul 21, 2023 · So you need to turn the prop slower. Dec 4, 2023 · The rest of this page is meant to provide details about this excellent product so as to assist potential PSRU purchasers in making a wise and informed decision. The options may be chosen on the product page; Belt Reduction Drive (up to 27 hp) $ 859. The CH-3 Counter Rotating models can bolt to GM V-8, Small Block, V-8 Big Block. Produces the PS-215 Mazda rotary based engine, the PSRU-300 reduction drive for Mazda rotary conversions, and computer based Multi-Function Displays. 6:1, 2. 3:1. We offer also (car) engines adapted for aviation aims. mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 We offer Hard Drive gearboxes, Soft Drive Gearboxes and Experimental Aircraft gearboxes with 1. CH-3 Counter Rotating models are used Articles about the firm and its products can be found in KP2/04, 8/05. Notice that there are also two designs for the DRIVE pulley. The options may be chosen on the product page; Predator 22 hp Belt Reduction mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 Belt is new type of high strength long life Kevlar/Aramid fiber. Jul 26, 2024 · The PSRU uses a cog belt and appears to be a 2:1 reduction. Just wondering if anyone knows where to get a 2:1 reduction gearbox that is suitable for a 100hp engine (Subaru EA81). Popular pages; aerotech-poland. Belt Reduction Drive (28 to 40 hp) $ 999. (6) 5/16 inch Propeller Mounting SS bolts--11 ft. I fear most of constraints is actually supported by the 2 threaded rods (from a chinese engine that converts honda GX clones / 25hp max) May 21, 2006 · No issues, no maintenance to date. If anyone is interested in buying its for sale. Most new style engines like the Rotax 2 and 4 stroke aviation engines use a prop speed reduction unit to allow the engine to run faster than the prop. We have developed considerable expertise in the manufacture of aircraft engine PSRU’s (propeller speed reduction units). The output shaft is welded directly to the gear withe the planetaries fixed in the aluminum housing, the output shaft is supported by two rows of needle bearings and lubricated with engine oil. net PSRU Belt reduction drive for Honda moto bike engine - YouTube. 8. 00 mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 Our PSRU’s are of the highest quality and used by aircraft homebuilders in Poland and other countries. Yet most of the firewall forward "packages" seem to offer gear driven PSRUs. 5. All of the mentioned conversions will require a PSRU (prop speed reduction unit) Some units can be had are gear reduction units, However a lot of people use a belt reduction drive. " Dec 30, 2020 · 1835cc flywheel drive: direct: 65 hp @ 3600 rpm, 60 @ 3400 rpm continuous: 156. The complete Mark 15 PSRU spread out in pieces before getting assembled. A designer has several different types of drive configurations to select from, in order to best achieve the intended function Home page for alternate-airpower. Included is a 3 ring binder with the the drawings and complete instructions. Engine powers become easily a secondary factor for bearings and housing design. 33781. We have designed a custom engine mount, exhaust, and wiring harness. Larry and Gene Smith of Smith Valley Engineering have carved out a market for their Volkswagen aircraft engine mods, including their belt drive reduction drive. The belt reduction drive units Century Drive Systems manufacturer under Patent # 4884949 and 6540570B1 are proven to be durable and reliable. mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 May 13, 2013 · Design is for flexibility to engine choices, shaft lengths and reduction options to include respective torsonal vibration and velocity acceleration loads. I need a belt drive PSRU for a rotax 503 with or without engine. Knight Hawk, New Horizons, and Ross Aero also offer planetary drives for both the EJ22/25 and the EG33. you reduce its output through gear reduction to alow it to spin up into its power range where it can produce the Aug 4, 2017 · Often, the governor drive mechanism is an optional toothed belt add-on. Mar 21, 2018 · Hello. All of the current LSA offerings with speed reduction units use spur gears or belts to make the reduction, but why no planetary gears. Aerotech-Poland manufacturer of reduction drives for aviation PSRUSee also:How to make a powerful 110 230V Tesla coil Part1 https://youtu. Jun 4, 2020 · - EPI's Gearbox Products - Propeller Reduction Units (PSRU), Helicopter Transmissions, Dynamometer Transmissions, Industrial Transmissions NOTE: All our Products, Designs, and Services are SUSTAINABLE, ORGANIC, GLUTEN-FREE, CONTAIN NO GMO's, and will not upset anyone's precious FEELINGS or delicate SENSIBILITIES. Uses a 4 band V belt and fits most small 1 and 2 cylinder Briggs, Kohler, Honda, and Predator engines over 27 hp. Their engines are sold as direct drive or with the PSRU. mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 We have an exclusive agreement with the manufacture of a Can-Am style V-twin engine. Features of belt redrive: Low noise. N Ste 3004 Pinellas Park, Fl. 55, 2. Dec 18, 2014 · Maximum power and minimal weight come from Raven’s custom-tuned exhaust system, super-efficient upper intake manifold, full-flow coolant system, custom redrive (PSRU) ratio, redundant water pump/alternator belt drive with aluminum under-drive pulleys, and a lightweight starter. Buy it now includes FREE SHIPPING in the US 48 CONTINUOUS STATES IN THE USA. Services for the application of metallic and non-metallic coatings by gas-thermal and gas-dynamic methods. Fred Geschwender originally designed his reduction unit in the early 1970's, as part of an automotive engine conversion that was intended to take the place of a Pratt & Whitney 1340 on agricultural and utility aircraft such as Beavers and Otters. The belt-PSRU’s are limited in power transmission capability; 2. 54, 1. com. The Mark-15 gearbox is a lightweight, high-performance PSRU product which draws heavily on the success of the EPI Mark-9 PSRU, described by several users as "bulletproof. The CH-3 Counter Rotating drive units are designed for a large block GM, Chevrolet, and Cadillac engines. The belt runs from the drive pulley to a driven pulley. mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 Nov 9, 2004 · I plan on using the factory intake so I need to lower the engine about 8" to clear the cowl. Reduction Gearboxes For Airboats And Experimental Aircraft. Dload tested at 21,700 lbs for 1000. Valley Engineering, LLC was founded during 1998 in Rolla, Missouri by Gene Smith and his son, Larry Smith, to manufacture and market double and triple cog-belt-driven Propeller Speed Reduction Units (PSRU) for VW auto engines that have been converted to aircraft engines. Hub fits WarpDrive prop (SAE1) I have for sale on here. mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 a belt or gear driven PSRU in the 150 HP range. Our company develops and produces belt reduction drives and power conversion kits for Honda engines in order to install propeller and use on airboat, hovercraft, aerosleighs and ultralight aircraft We develop conversion kits for Honda engines of the following series: P07, L15, D17, R20, K24, J35. I am looking for ideas on a Propeller Speed Reduction Unit (PSRU). All major components complete. Jan 3, 2024 · The Mark-9 PSRU was the geared propeller reduction unit which we designed, prototyped, and developed for our Aircraft Powerplant. It all starts on the inside with a helical-cut, precision-ground gear set that delivers quiet, smooth and efficient power to the prop. For this reason, it is important to Sep 17, 2017 · This is our belt reduction drive and propeller combo for the Harbor Freight Predator 22 engine. Compact, Efficient, Reduction Drive/Propeller Air Drive Combinations For Airboats and Topics: Vw Engines, Bmw Engines, Moto Guzzi Engines, and Belt Reduction Drives. It is strongly recommended that only wood or lightweight composite props be used with GPASC engines. Each approach has its advantages and disadvantages. 5 lb w/ alternator, starter, carb, distributor: $5898 kit: 1835cc reduction: belt: 85 hp @ 4200 rpm, 65 @ 3400 rpm continuous: 176. Aug 3, 2017 · - PSRU FAQ's - Questions we get asked; Questions you should ask NOTE: All our Products, Designs, and Services are SUSTAINABLE, ORGANIC, GLUTEN-FREE, CONTAIN NO GMO's, and will not upset anyone's precious FEELINGS or delicate SENSIBILITIES. Versions with reduction to 0. Fits: Commercial V-Twin: 627 cc to 993 cc. CH 3 Counter Rotator Reduction Unit with Blackhawk Belt Ratios available are 2:1 & 2. Also known as PSRU - Over 560 sold worldwide. Their PSRU had been under development since about 1993. Another carrier bearing of the same size is mounted at other end of the propshaft. Apr 9, 2012 · Hi, Could you tell me how much you would trust this 495 PK 8 V-belt for a 3/4 inch axle I may have to look for a shorter belt as you can see metal axles don't do very deep in their hole. The all new CH-4 airboat drive unit has a 5" wide, 14mm belted drive unit and is now available for immediate shipment. mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 rotax РМЗ arctic cat volkswagen honda bmw suzuki subaru toyota ВАЗ Москвич; Виробник: 447, 462, 467, 503, 532, 550, 582, 583, 670: 500, 550, 551 mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 4 days ago · Lightweight, extremely reliable propeller reduction gearboxes (PSRU's), Gearboxes and accessories for Garrett TPE-331, Allison B-250 and Solar T-62 turbine engines, Conversions which replace the engines on existing aircraft with newer, more powerful engines, AIR CRAFT REDUCTION DRIVES . Manufacturing of parts for gear and belt reducers. Key to this package is Raven’s trademark ReDuction Drive. The Hirth 80-hp 3002 and 100-hp 3003 4-cylinder, 2-stroke opposed family seen here is a good example. The EJ drive fits the Subaru EJ single-cam series of engines. 8 and 2. 0:1 or 2. The CH-3 models are similar to the CH-2 models but are stronger and use a wider belt. Contrary to many marketing claims, the belt in toothbelt-PSRU’s PROVIDES ABSOLUTELY NO TORSIONAL ABSORPTION CAPABILITY (In fact, many of the high capacity toothbelts available have greater stiffness than chains of similar capacity)" PSRU - Prop Speed Reduction Unit mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 Jan 3, 2010 · Initial testing on a custom built reduction drive on a 1915cc VW aircraft engine, 1. My 2 stroke 618 Rotax redlines at 6800 rpms but I have a 3 to 1 gear ratio in my PSRU and that means my prop only turns a max rpm of 2267. 245" between shafts. 00 Select options This product has multiple variants. 38, 2. The FOXCON Reduction-Drive with a [2. 94:1, and five variants of the gearbox are possible with the long-nose option or standard length. mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 JohnVlake Redrive 42lbs Ford c6 gears 2. 8 lb w/ alternator, starter, carb, Slick 4220: $6766 kit: 1915cc front drive: direct: 69 hp @ 3600 rpm, 65 @ 3400 rpm continuous Jun 9, 2024 · Belt drives (both V-belts and toothbelts) have been used in various aircraft drive systems. com Gear Reduction Drives (PSRU) for BMW engines ; aerotech-poland. Multi V Belt drive - 1. 588:1 ratio PSRU, direct crank driven gerotor (trochoid) oil pump, solid cast steel crank, forged A propeller speed reduction unit is a gearbox or a belt and pulley device used to reduce the output revolutions per minute (rpm) from the higher input rpm of the powerplant. This requires engineering, precision manufacturing, loads of hours to prove in the test cell, and then many hours/years of flight time to create a track record that customers believe and can trust. Me thinks a belt driven unit would somewhat dampen the piston pulses and also be lighter. This presentation will describe several of the critical concepts involved in PSRU design, with special emphasis placed on the methodology which EPI used to solve those problems. Is it a reliability issue? Aren't modern cog belts almost indestructible with proper alignment, cooling and tension? Subaru automotive engine with reduction gear and variable pitch prop. Ratio = (Radius of Driven Pulley) / (Radius of Drive Pulley) Example: A handcrank is attached to a drive pulley of 2 inches in radius. lbs. 000 revolutions two of these bearings back to back next to the propflange. No belt. We even have a custom carbon propeller made to match this engine’s torque and power curve and the Merlin’s speed range. be/1qGQSQCYnqA Jul 30, 2020 · I am in the planning stages of a homebuilt right now. Belt Reduction Drive has tensioner of eccentric type. The CH-3 airboat drive unit is a 5" wide belted reduction unit and our most popular airboat product. 14. I'm open to all pro's and con's on this type of PSRU on a rotary. Currently all new gearboxes are built to order due to the volume of work we have. Best estimate of total time for an Air Trikes SPG4 (most similar kit to Yamaha) on Suzuki is 2000 hrs, drive shaft bearings. or 180 in. 5:1 ratios available. All of our airboat drive unit products are manufactured under Patent # 4884949 and 6540570B1; CH-3 Airboat Belted Reduction Drive Unit Jul 6, 2023 · As an example, consider a reduction drive configuration using a 1/2" pitch HyVo chain, with a 23-tooth driving sprocket and a 59-tooth driven sprocket (2. 8:1, 2. Propeller induced, gyroscopic and inertia loads are extremely important for PRSU bearing selection and life evaluation. . 2. mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 Rugged V belt reduction drive that fits nearly any small industrial engine. From the beginning, our goal at Ballistic has been to produce the finest high-performance gear reduction drives in the world. According to Francois Besse, editor of Piloter magazine, the three-cylinder develops 42 horsepower and will run on biofuel. Mar 19, 2012 · Three ratios are available, 2. (See attached diagram of Wright R3350). 2:1] ratio was specifically designed and developed for the Subaru EA81 by Foxcon Aviation & Research Pty Ltd. This new drive comes in wide range of ratios, making it easy `The power speed reduction unit (PSRU) is the device that is loaded by the piston engine and the thruster. Consultation of technologists - practitioners in Oct 12, 2021 · Joined Oct 30, 2003 Messages 4,002 Location Naperville, IL Aircraft SnoBird Tandem Gyro, Robinson R-22, Mosquito XE-285, Assorted Fixed Wing Total Flight Time May 14, 2010 · The belt-drive PSRU unit itself lists for $5600. 00 (minimum order) PSRU Aero 22 Is a single reduction gear drive (2. RAM Performance Subaru Offering 1. The EA drive is designed to fit the Subaru EA81 and EA82 series engines. Rotax 6-bolt pattern is the same as many PPG belt reduction drives. Gear Reduction Unit Sep 25, 2013 · 1. Properties of Belt Drives The fundamentals of belt drives, and performance considerations which are common to all belt drives. Examples: Seismograph, Military, Hunting, Fishing, EPA, Law Enforcement, Aquatic Control, Tour Boats and Pleasure Craft. RFI and RAF both produce direct drive and cog belt reduction drive systems for the EJ22/EJ25. mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 Our engines use 4 inline cylinders, precision cast aluminum block and head, steel cylinder sleeves, 4 valves per cylinder, single overhead cam, toothed belt cam drive, fixed valve timing, plenum tuned intake system, tuned tubular exhaust system, 2. Straightforward in concept, the BAP drive unit is a robust but nicely finished piece that uses a simple belt and cogged gears arrangement to provide a 1. But, this has begged the question, at least in my mind, "What manufacturer of PSRU's can be trusted?" AIRDROME AEROPLANES newest product is our TORQUE MASTER GOODYEAR EAGLE SYNCHRONOUS DRIVE reduction unit. BACKGROUND. 85 : 1 PSRU, 20b mount, and EC3 ECU. The CH-3 Longbelt airboat drive unit has 41. 17:1 angular ball thrustbearings 45MM I. 422 or to 0. power is the rate at which torque can be produced. mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 A Prop Speed Reduction Unit (PSRU) allows both the engine and prop to operate at their most efficient speed (RPM), producing optimum performance, efficiency, and lower noise emissions. Its brilliant design and lightweight heat treated aluminium casting, bolts directly onto the bell housing of the EA81 engine, this guarantees a superior tracking of the belt. It was also the first of our gearbox products to use hydrodynamic bearings, which substantially reduced the weight of the package. mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 Our belted reduction drive units are a perfect fit for all airboating applications. lbs or 132 in. The new design DRIVEN pulley was designed to be turned from either a casting or billet so it’s probably the easiest to build. Mar 16, 2011 · The front-drive engines can be fitted with belt reduction drives, available in 1. lbs. When a belt is too loose for the design load, the belt teeth try to climb the sides of the sprocket grooves, which dramatically increases the stresses on the belt, the belt teeth and the shafts and bearings, leading to rapid tooth wear and reduced component life. 5:1 ratios to allow flexibility in prop selection, up to 74 inches. mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 Aug 2, 2017 · WATCH THE FULL VIDEO HERE https://www. The drive belts for CH-3 models are 5" wide and can use HPPD Plus or Blackhawk belts which are rated 60% stronger than the standard HPPD Plus style. The 3V belt on the first version is ok for up to about 50 HP. com Gear Reduction Drives (PSRU) for Subaru engines Aug 4, 2017 · Often, the governor drive mechanism is an optional toothed belt add-on. Dec 11, 2012 · Introductions were made, and Autoflight agreed to design a three-gear unit for the Suzuki that would rotate the correct direction and, unlike the belt-drive units, accommodate a hydraulic propeller. Phone: 727-483-3838 Email: stingerdrives@gmail. The best belt is the one shown on the newest design and this belt is good for 65 HP maximum. The thruster, a propeller of a fan, acts on the PSRU to extract the required power at the optimum speed for the aerial vehicle. Commonly referred to as a PSRU (propeller speed reduction unit). Engine Theory. mass of reduction drive belt reduction drive PSRU (gear reducer) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 8,5 (belt reduction drive with starter) 6: 14,5: 13: 13: 14: 14: 14: 14: PSRU (gear reducer) 14: 18: 12: 14: 12: 14: Ratio: 1:1 - 3,2:1 Jul 22, 2023 · However, belt undertensioning results in self-tensioning. 85:1 Tracy Cooks PSRU 2. com PSRU with BMW 1100 - 1200 engine assembly - short instruction ; aerotech-poland. They have also been responsible for introducing a number unique ultralight and light sport aircraft designs. 85:1 I have a brand new Rotary Aviation 2. For aircraft application we recommend to use Kevlar reinforced toothed belt. youtube. May 8, 2024 · There are several contemporary approaches to PSRU implementation. Sep 4, 2016 · Belly mounted cowled radiator just like a P-51. This is a single mesh PSRU, which means that the reduction unit contains only two gears, input shaft gear and propeller shaft gear, but no idler gear to change direction in this case. 40mm shafts and bearings, helical gears. 0:1 and 2. On EPI PSRU's, the propeller governor drive and plumbing are tightly integrated into the reduction unit design, using a pair of crossed helical gears to drive the governor and a proven reliable servo-pressure transfer mechanism from the (fixed) housing to the (moving Keywords: PSRU, aircraft, piston engine, gear drive, involute. A tall order for sure, but we sweat the details of every aspect of our products. 8 V6 and other V6 engine parts that are new. oeja oilyw jnltcjie zyiib vdrx flgujiw vdxe mspwh iupbgb zwsbadai