Lighweight opposite 2-stroke engines

Homebuilt Aircraft & Kit Plane Forum

Help Support Homebuilt Aircraft & Kit Plane Forum:

jbiplane

Well-Known Member
Joined
Jan 29, 2014
Messages
313
Location
Krasnoyarsk, Russia
We produce 90,120, 183, 294, 350, 598cc opposites with our proprietary
patented exhaust system.

Engines have very small vibration level and can be delivered with Fuel injections,
belt or gear reductions...

The simplest configuration of 294 cc on photo. This engine suits well for paramotors.
DSC01133.jpgDSC01143.jpg
Code:


Tech specs and prices on requirest.



Yours,


Valery Rutkovskiy
Chief designer

Aviamechanica LLc.
Vodopianova 19-211
Krasnoyarsk 660098
Russia

[email protected]
www.aviamech.com
+7 9029 820426
 
Last edited:

jbiplane

Well-Known Member
Joined
Jan 29, 2014
Messages
313
Location
Krasnoyarsk, Russia
Do I see Stihl 090 cylinders?
Exactly. We produce 2 variants of each engine:
1. Use chainsaw cylinders + pistons of Stihl and Husqvarna for economy version of our engines:
Stihl 440, 650, 660, 880, 070, 090
Husqvarna 65, 72, 3120
Partner K1260, K1260
2. Produce by 5 milling surerior expensive versions of cylinders + pistons and coat them by nikasil in-house.
 

jbiplane

Well-Known Member
Joined
Jan 29, 2014
Messages
313
Location
Krasnoyarsk, Russia
Couple of videos = 294cc engine with carburetor
[video]https://www.youtube.com/edit?o=U&video_id=t5EHxyTq3WM[/video]
[video]https://www.youtube.com/edit?o=U&video_id=-uSf-vut9KY[/video]
 

pictsidhe

Well-Known Member
Joined
Jul 15, 2014
Messages
8,812
Location
North Carolina
Valery, I have used various chainsaws over the years. A husky 435 (41cc) is the newest model I've owned. It's an X-torq stratified charge model and despite the fact that I've richened the mixture a little from standard, it's by far the most frugal saw I've ever used. Other than using way less fuel, it's like older saws. If you can work out how to use the new stratified charge cylinders, they'd be worth trying out.
 

jbiplane

Well-Known Member
Joined
Jan 29, 2014
Messages
313
Location
Krasnoyarsk, Russia
That would stratify too with suitably located and timed injection.
Stratified cylinders a bit bulky compare classical.
We reach good results placing nozzles in transfer ports + timing injection.
We mill top of range cylinders by 5-axis milling. I got from 6kg 120cc completelly milled engine up to 32hp,
and super fuel economy, but it is expensive toy for UAV which cost ~5 time more than shown here.
 

pictsidhe

Well-Known Member
Joined
Jul 15, 2014
Messages
8,812
Location
North Carolina
Could you give us an idea of price? I may be interested in two 10-12hp engines in a year. Most here would be more interested in your 28hp+ engines.
 

jbiplane

Well-Known Member
Joined
Jan 29, 2014
Messages
313
Location
Krasnoyarsk, Russia
Could you give us an idea of price?
Which target rpm? We have 130cc 12hp boxers and 141cc 13hp inline.
The price start from 1300 USD with carburetor and magneto ignition.
Options - pull or electrical starter, belt reducer, onboard generator,
EFI... We often partially modify engine to customer reqs.
 

proppastie

Well-Known Member
Log Member
Joined
Feb 19, 2012
Messages
5,226
Location
NJ
We produce 90,120, 183, 294, 350, 598cc opposites with our proprietary
patented exhaust system.


The simplest configuration of 294 cc on photo. This engine suits well for paramotors.


What is the diameter of your crank at the prop hub for the 183....What is the taper and key size for the prop hub.
 

jbiplane

Well-Known Member
Joined
Jan 29, 2014
Messages
313
Location
Krasnoyarsk, Russia
Valery, what is the price for the 350 and 598cc engines with electric start and belt reduction ?
350cc - this engine completely 5-axes milled, it was specific and customer driven. We make it till the moment with EFI, starter-generator and 28V UAV alternator. So FOB Factory for this engine is 8602 USD. We had a plans to make much cheaper version changing cylinders to italian 180cc C-max or Yamaha banshee if felt some real interest from somebody.

598cc is 4-cylinder boxer, in fact is 2 of 294cc connected along axe. It much more affordable and most of the parts are easily achievable from numerous aftermarket shops. Carburetor version with electric starter and belt reducer
- with carburetor 3750 USD FOB
- with EFI 4550 FOB (The very similar Limbach 550 used on UAVs cost few times more)

Carbon (+350USD) or fiberglass (+200 USD) propeller not included

We have 3d model for 598 with the same cylinders in 2-stroke star layout. Can make if anyone will order.

Regards
Valery Rutkovskiy
[email protected]

+7 9029 820426
 

proppastie

Well-Known Member
Log Member
Joined
Feb 19, 2012
Messages
5,226
Location
NJ
Crank diameter is 17mm, Taper 1:10, Prop hub any, by customer requirest.
Key?...Key-way....(2,3,4,5,6,7 mm wide?) hub steel or aluminum? I could speck the key but would have thought you already had it machined into the crank. Certified aircraft engine with taper shaft (Continental A65) has a square key.....I personally do not like Woodruff key.
 

proppastie

Well-Known Member
Log Member
Joined
Feb 19, 2012
Messages
5,226
Location
NJ
Woodruffs can't fall out. They can be a bit fiddlier to use, though.
only good for location but maybe that is the idea on a model engine hitting the prop. Hard for the square key to get past the prop nut on the A65.

Had a haybine kept breaking the wobble shaft right at the Woodruff key location, perhaps why I do not like them.
 
Top