for sale^ belt drives for ROTAX, HONDA, Suzuki, Yamaha etc. conversions/

[Aerotech 3]

For over 7 years we have been manufacturing and selling belt drives, starters, etc. for rotax, Honda, Suzuki and other engines up to 250 hp. For more information, write to aerotechnik.service@gmail.com

 

[nlappos 413]

Looks great, what is your price for the typical belt drive?

[Aerotech 3]

Thanks for the good rating, we try to pay attention to the appearance. The cost of a set for rotax with an electric starter is $700 + shipping, for conversions kit (80-150 hp) - 1000$ + shipping. Electric starter for rotax - 550$ + shipping.

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[TJay 1041]

Seems like a reasonable cost for what you have.

[Aerotech 3]

More photos and videos

 from my archive

VID_20190317_162257999.mp4

[Aerotech 3]

For more information, please call our distributor in Canada - Richard Berlov +16474681224. He always has some reductors and spare parts in stock.

[Aerotech 3]

This is our listing on ebay.

https://www.ebay.com/itm/Reduction-drive-for-Rotax-503-and-Rotax-582-engines-Arctic-Cat-inc/263182886655?hash=item3d46ec26ff:g:WwgAAOSwnB1Zqrtg

Our production is located in Ukraine, but thanks to our partner in Canada, we guarantee full service and support for your aircraft! You can also apply for a free consultation or just chat on any aviation topic!

Edited 19 Jun 2020 by Aerotech

[Yamma-Fox 403]

Have you developed and tested a belt drive for a yamaha yet?  

Or would that be a custom job. 

[dholly 718]

That's what I was wondering too. They look very nicely fabricated, not sure what to think on the multi vs. single belt designs though.

[Aerotech 3]

Have you developed and tested a belt drive for a yamaha yet?  

Or would that be a custom job. 

If you mean the apex Yamaha, then the beltbox for it will fit with a slight change (add one belt) and the price will increase by $ 200. I can install a one-piece belt as desired, this is +50 $. 

 

Edited 28 Jun 2020 by Aerotech

[Yamma-Fox 403]

Thanks, yes I was mostly wondering if you have fitted a belt drive on a Yamaha, tested it, and flown it for a period of time.

Or are you proposing a new prototype build to be tested by the buyer? 

[Aerotech 3]

Thanks, yes I was mostly wondering if you have fitted a belt drive on a Yamaha, tested it, and flown it for a period of time.

Or are you proposing a new prototype build to be tested by the buyer? 

The reduction drive has been tested on many motors and the Yamaha is no different from them, if you do not take into account the special adapter plate.  The only special motor is the BMW R1100 - R1200, which has a very uneven torque.

[Yamma-Fox 403]

Ok thanks for the info.  Please post up here or over in the Yamaha Aircraft Conversions Facebook Group when you have a redrive built for a Yamaha (Apex, RX-1, Phazer, Nytro/Vector/Sidewinder)

I know that there is demand for higher ratio options (below 2.62:1) for the short prop / high prop RPM builders.

It looks like your experience with belt drives would make the conversion for a Yamaha a pretty easy endeavor and your prices are very reasonable.  It really comes down to proof of theory, which you are confident in, but for buyers 95% of them would want to SEE it proven. 

Edited 29 Jun 2020 by Yamma-Fox

[Aerotech 3]

Ok thanks for the info.  Please post up here or over in the Yamaha Aircraft Conversions Facebook Group when you have a redrive built for a Yamaha (Apex, RX-1, Phazer, Nytro/Vector/Sidewinder)

I know that there is demand for higher ratio options (below 2.62:1) for the short prop / high prop RPM builders.

It looks like your experience with belt drives would make the conversion for a Yamaha a pretty easy endeavor and your prices are very reasonable.  It really comes down to proof of theory, which you are confident in, but for buyers 95% of them would want to SEE it proven. 

Ok thanks for the info.  Please post up here or over in the Yamaha Aircraft Conversions Facebook Group when you have a redrive built for a Yamaha (Apex, RX-1, Phazer, Nytro/Vector/Sidewinder)

I know that there is demand for higher ratio options (below 2.62:1) for the short prop / high prop RPM builders.

It looks like your experience with belt drives would make the conversion for a Yamaha a pretty easy endeavor and your prices are very reasonable.  It really comes down to proof of theory, which you are confident in, but for buyers 95% of them would want to SEE it 

Oh, Totally agree with you.  I install a redrive on the motors that I can buy, but I can’t buy it in my country in the pit.  Can someone help buy this motor in the USA?  Or someone wants to install a gearbox on his motor on mutually beneficial conditions?

[Yamma-Fox 403]

Yes please join our Yamaha Aircraft Conversions Facebook group.  There are 4k members there that would be interested in your offering and we have two highly reputable sources for engine packages.

There you also may find a volunteer to work with for testing a prototype. 

[Armilite 4]

In the USA we have a Part 103 Ultralight Class (No License needed) where the Max Empty Weight is 254 lbs! It also has a Full Power Speed of 55 Knots and can only carry 5 Gallons Gas! So mainly Single Cylinder Engines have been used for almost 40 Years! The Rotax 277UL 26hp@6250rpm with a Megaphone Header Exhaust or the 277UL 28hp@6400rpm with a Megaphone Header Exhaust was used on 85% of the Legal Part 103's. So a Light Weight Belt Drive is desirable. Rotax made Gear Drives in 2.0, 2.35, and 2.58 Ratios. The Rotax 277F 28hp@6750rpm with a 34mm Carb was also used in Skidoo Snowmobiles from 1978 to 2008. The 277UL used a 36mm Carb. So we have lots for 277F's.

The Rotax 277UL/277F is (72mm x 66mm) 268.8cc/7cc= 38.4hp is possible at 6500rpm with a Good Tuned Pipe. In truth, 36hp would probably push or pull most Part 103 Airframes 55 knots.

Both the 277UL/277F can be Big Bored with a Custom Sleeve and Piston to (82mm x 66mm) 348.6cc!

The difference between the 277UL and the 277F is the PTO Case. The 277UL has an O-ring groove around the PTO for the gear drive. The 277F doesn't have the groove.

All Part 103 and Small Kit Airplanes have a Max Take-Off Weight (MTOW) which most fall in the 450 lbs to 650 lbs.

In the USA the Average pilot Weight is 180 lbs to 235lbs. Plane at 254lbs + 30lbs(Gas) + 235lbs(Pilot) = 519 lbs!

450 lbs = 204.1166 kg / 10 kg = 20.41166 kw needed to Fly Well = 27.37249 hp needed!

519 lbs = 235.4144 kg / 10 kg = 23.54144 kw needed to Fly Well = 31.56959 hp needed!

650 lbs = 294.835 kg / 10 kg = 29.4835 kw needed to Fly Well = 39.53802 hp needed!

The Install Weight of the Fan Cooled 277UL with a Gear Drive & Exhaust was 65 lbs! I believe the Gear Drive is 9.9 lbs. I believe the Free Air 277UL version is around 60 lbs! Tuned Pipe Exhaust is usually lighter than Rotax's UL Exhaust, as most Belt Drives are lighter than their Gear Drive.

So a Mico V Belt Drive Designed for 38hp would be desirable. This Pulley was $8.50 when I bought it off eBay. 2.37" OD x 2.0 = 4.74" OD for Top Pulley. 2.37" x 2.35 = 5.5695' for Top Pulley. 2.37" x 2.58 = 6.1146" for Top Pulley.

Rotax Gear Drive ratios.

6500rpm/2.0= 3250rpm  <---- Gives you the Maximum Thrust.

6500rpm/2.35= 2,765.9rpm

6500rpm/2.58= 2,519.3rpm