Need info on my Groupner Wankel

i think graupner still makes them, so it might be anybodys guess.

http://www.osengines.com/engines/osmg1401.html
this might help

yes, this is the version OS makes.
not sure if its just like the graupner, they definitly look alike...

mitchg95 wrote:

it looks great, what did you pay?

Thanks. I got it from a friend for $30.00

sdjjadk wrote:

mitchg95 wrote:

it looks great, what did you pay?

Thanks. I got it from a friend for $30.00

wow that is a extraordinary deal wish i got engines like those for that price

GermanBeez wrote:yes, this is the version OS makes.
not sure if its just like the graupner, they definitly look alike...

I called O.S. / Great Planes a while back and they said there are no interchangeable parts between the Groupner / O.S. Type I and the newer O.S. Type II Wankel and even though it looks like it might, the muffler will not work either. So It looks like I'm going to have to keep looking on E-Bay or fabricate something. It runs fine like it is but it's too loud and it wouldn't hurt to have a pressurized fuel system.

sdjjadk wrote:

GermanBeez wrote:yes, this is the version OS makes.
not sure if its just like the graupner, they definitly look alike...

I called O.S. / Great Planes a while back and they said there are no interchangeable parts between the Groupner / O.S. Type I and the newer O.S. Type II Wankel and even though it looks like it might, the muffler will not work either. So It looks like I'm going to have to keep looking on E-Bay or fabricate something. It runs fine like it is but it's too loud and it wouldn't hurt to have a pressurized fuel system.

yeah, if you wanna get rid of one of them... i like trading

mitchg95 wrote:

sdjjadk wrote:

mitchg95 wrote:

it looks great, what did you pay?

Thanks. I got it from a friend for $30.00

wow that is a extraordinary deal wish i got engines like those for that price

It was one of those rare occasions where I make a lucky find. LOL

mitchg95 wrote:

sdjjadk wrote:

GermanBeez wrote:yes, this is the version OS makes.
not sure if its just like the graupner, they definitly look alike...

I called O.S. / Great Planes a while back and they said there are no interchangeable parts between the Groupner / O.S. Type I and the newer O.S. Type II Wankel and even though it looks like it might, the muffler will not work either. So It looks like I'm going to have to keep looking on E-Bay or fabricate something. It runs fine like it is but it's too loud and it wouldn't hurt to have a pressurized fuel system.

yeah, if you wanna get rid of one of them... i like trading

This one is going into a .40 Yak and the other one is going to my Uncle who is also into the hobby. But if I ever decide to trade it, I'll let you know.

Shawn

sdjjadk wrote:

mitchg95 wrote:

sdjjadk wrote:

GermanBeez wrote:yes, this is the version OS makes.
not sure if its just like the graupner, they definitly look alike...

I called O.S. / Great Planes a while back and they said there are no interchangeable parts between the Groupner / O.S. Type I and the newer O.S. Type II Wankel and even though it looks like it might, the muffler will not work either. So It looks like I'm going to have to keep looking on E-Bay or fabricate something. It runs fine like it is but it's too loud and it wouldn't hurt to have a pressurized fuel system.

yeah, if you wanna get rid of one of them... i like trading

This one is going into a .40 Yak and the other one is going to my Uncle who is also into the hobby. But if I ever decide to trade it, I'll let you know.

Shawn

cool

At $30 you stole that engine! A muffler is almost unobtanium. I bought a muffler for mine on eBay a few months back and I paid $50 just for the muffler. There are interchangeable parts from the first version to the current version. The bearings, the apex seals and springs are all the same. The screw set is the same and the drive washer key is the same. They are fuel pigs but make the same power as a 40.

Use a fuel that has at least 50% of the oil is castor and total oil content is 20%.

If you can't find a muffler a 4 stroke engine muffler could be adapted to fit. Something off of a OS FS 70 might work. Or an adapter to a ST quiet muffler or torpedo muffler may work.

Jason

I'm fairly sure OS made all of these, some also had the NSU label as well.

Jason_WI wrote:At $30 you stole that engine! A muffler is almost unobtanium. I bought a muffler for mine on eBay a few months back and I paid $50 just for the muffler. There are interchangeable parts from the first version to the current version. The bearings, the apex seals and springs are all the same. The screw set is the same and the drive washer key is the same. They are fuel pigs but make the same power as a 40.

Use a fuel that has at least 50% of the oil is castor and total oil content is 20%.

If you can't find a muffler a 4 stroke engine muffler could be adapted to fit. Something off of a OS FS 70 might work. Or an adapter to a ST quiet muffler or torpedo muffler may work.

Jason

Hi Jason,
Thanks for heads up on the parts and muffler suggestions. I'll look into the 4-Cycle mufflers and see if one will fit.


Shawn

John Goddard wrote:I'm fairly sure OS made all of these, some also had the NSU lable as well.

Mine has NSU stamped into the prop hub.

John Goddard wrote:I'm fairly sure OS made all of these, some also had the NSU lable as well.

I think NSU was the main licensee of the patent, for the Ro80 car, then sub'ed it out to a bunch of other dreamers, so it may have been a licensing thing.

Suzuki had a motorcycle (only listed for two years, which at the time was cause for hari-kari on the part of the main designer) which had more parts in the carb and ignition system than most mc's had parts. I think Rotax built both snowmobile and lawmower engines, too.

Mazda was probably the only people who made money off it.

ahrma_581 wrote:

John Goddard wrote:I'm fairly sure OS made all of these, some also had the NSU lable as well.

I think NSU was the main licensee of the patent, for the Ro80 car, then sub'ed it out to a bunch of other dreamers, so it may have been a licensing thing.

Suzuki had a motorcycle (only listed for two years, which at the time was cause for hari-kari on the part of the main designer) which had more parts in the carb and ignition system than most mc's had parts. I think Rotax built both snowmobile and lawmower engines, too.

Mazda was probably the only people who made money off it.

All good.
The RE5 was imported into the UK for about 5 years I think. I had a Saturday job at Coburn and Hughes
who were the UK's largest Motor Cycle chain in 77/79 they may have been late registered but I'm
fairly sure we were still selling them in 79.
NSU went under standing by warranty claims on an otherwise superb (for it's time) car the RO80.
Which eventually had dealers even putting Ford engines in them.
My Grandad had the very first RX3 in the UK which prompted me to by an RX7 18 years later.
If you've never driven one and the opportunity presents itself take it.
I think it's the smoothest engine ever built forget Jag or BM V12's this thing is almost turbine like.
Shame they never sorted out the horrendous fuel consumption.

I owned an '83 RX7 for a while. Great little car until my wife (then Girlfriend) drove it off an embankment. None of the panels sat right after that.