aixro xr50
10-12-06, 10:08 PM
#1
Full Member
Thread Starter
Join Date: May 2005
Location: colorado
Posts: 128
Likes: 0
Received 0 Likes
on
0 Posts
aixro xr50
Cool engine
http://www.nova-racing.com/nova_gb/index.htm
Technical Details
Specification: Single rotor, Wankel design
Power: 46hp at 7800 rpm
Weight: ~ 17 kg
Torque: 47 Nm at 4500 rpm
Chamber volume: 294cc
Max. engine speed: 10500 rpm
Clutch: 2-disc centrifugal
Drive: 428 pitch
Ignition: Magnetic ignition with adjustable timing
Housing: Water cooled, partially Nicasil coated
http://www.nova-racing.com/nova_gb/index.htm
Technical Details
Specification: Single rotor, Wankel design
Power: 46hp at 7800 rpm
Weight: ~ 17 kg
Torque: 47 Nm at 4500 rpm
Chamber volume: 294cc
Max. engine speed: 10500 rpm
Clutch: 2-disc centrifugal
Drive: 428 pitch
Ignition: Magnetic ignition with adjustable timing
Housing: Water cooled, partially Nicasil coated
10-14-06, 09:34 PM
#5
Rotary Freak
Join Date: Mar 2003
Location: Calgary, Alberta, Canada
Posts: 1,711
Likes: 0
Received 0 Likes
on
0 Posts
Never mind in a cart--- what about in an advanced ultralight airplane? The weight and hp are in the right range.
The only thing that bothers me is the charge cooling--- running the intake charge through the engine to provide cooling and lubrication (it's 50: 1 premix) before directing it into the intake port not only costs hp (heated intake charge = less density = less hp) but has in the past caused cooling issues. Also, the design and displacement of 294 c.c. suggests that this may be an updated and liquid-cooled knock-off of the old air-cooled Sachs snowmobile engines from the early '70's. (I have one of these engines in the garage).
I wonder what this company does to address these issues, and how does the water cooling on this design work? Then there's the issue of the re-drive required for aircraft use.
Still, the fact that it's a rotary rather than a 2-stroke Rotax means that engine siezures would be a thing of the past, and it would have a longer TBO. The price is less than a Rotax 503 as well.
I was just talking to an aeronautical engineer and homebuilt aircraft guru just yesterday on the subject of light-weight rotary engines for small aircraft. I guess I'll have to send him this link.
The only thing that bothers me is the charge cooling--- running the intake charge through the engine to provide cooling and lubrication (it's 50: 1 premix) before directing it into the intake port not only costs hp (heated intake charge = less density = less hp) but has in the past caused cooling issues. Also, the design and displacement of 294 c.c. suggests that this may be an updated and liquid-cooled knock-off of the old air-cooled Sachs snowmobile engines from the early '70's. (I have one of these engines in the garage).
I wonder what this company does to address these issues, and how does the water cooling on this design work? Then there's the issue of the re-drive required for aircraft use.
Still, the fact that it's a rotary rather than a 2-stroke Rotax means that engine siezures would be a thing of the past, and it would have a longer TBO. The price is less than a Rotax 503 as well.
I was just talking to an aeronautical engineer and homebuilt aircraft guru just yesterday on the subject of light-weight rotary engines for small aircraft. I guess I'll have to send him this link.
Last edited by Aviator 902S; 10-14-06 at 09:45 PM.
10-28-06, 05:39 AM
#7
Newbie
Join Date: Oct 2006
Location: Europe
Posts: 1
Likes: 0
Received 0 Likes
on
0 Posts
Watch it 'fly' here: http://www.youtube.com/view_play_lis...539DAAC7C2E175
And a detailed test report here: http://www.karting1.co.uk/wankel-kart-test.htm
And a detailed test report here: http://www.karting1.co.uk/wankel-kart-test.htm
Trending Topics
07-19-07, 04:17 PM
#10
Exhaust Manifold Leak
I put yesterday one on a test bench..
50hp without air filter and good flowing exhaust @ 50° watertemp and 160jet
40.3hp without air filter and biland exhaust but a bit more torque in de mid rpm range
43.7hp with the good exhaust and a new k&n air filter, bit more torque than the 50hp run
47hp without air filter, good exhaust and 150 jet, but way better response and torque in the mid range!
This was all done with a badass restrictor in the periphal inlet port to get a bit more torque in de mid range because the flapper volva with controls the periphal port open a bit to early..
conclusion: is has Alot of potential this is with a stock engine and a bad carb..
With open and lenthned exhaust and good carb/tuning/variable ignition 60hp is reachable..
When you want more, you can use ceramic needles bearing and apex seals.. Then more the 65hp is possible..
And at least, there is also alot of power thrown away because the mixture is heated by the rotor.. when we have fixen the exhuast and carb wil will try to run it on methanol..
50hp without air filter and good flowing exhaust @ 50° watertemp and 160jet
40.3hp without air filter and biland exhaust but a bit more torque in de mid rpm range
43.7hp with the good exhaust and a new k&n air filter, bit more torque than the 50hp run
47hp without air filter, good exhaust and 150 jet, but way better response and torque in the mid range!
This was all done with a badass restrictor in the periphal inlet port to get a bit more torque in de mid range because the flapper volva with controls the periphal port open a bit to early..
conclusion: is has Alot of potential this is with a stock engine and a bad carb..
With open and lenthned exhaust and good carb/tuning/variable ignition 60hp is reachable..
When you want more, you can use ceramic needles bearing and apex seals.. Then more the 65hp is possible..
And at least, there is also alot of power thrown away because the mixture is heated by the rotor.. when we have fixen the exhuast and carb wil will try to run it on methanol..
Thread
Thread Starter
Forum
Replies
Last Post
