krash133

It's an engine for Radio Controlled planes and cars
made by O.S. Engines
Displacement: 4.97cc (.30 cu in)
Carburetor: 4.6mm bore
Output: 1.27 bhp at 17,000 rpm
Weight: 335g (11.8 oz)
Practical rpm: 2,500 - 18,000

Rotortuner

Ya I have seen one of these before. I used to be into RC airplanes, but never heard one run. Pretty small though. I wanted to put one into an rc car. most rc cars se .21 at the largest so .30 would fly.

CJG


74 REPU

krash133

I found out about it in a Rc car mag. Was October 01 issue of Radio Control Car Action . They were talking about the advantages of using a rotary in a rc car, less vibration, lighter weight, good power. They also said there aren't any kits to put one in a car, although you could do it if you built all the mounting parts. Pretty cool idea, just too much time and effort to do it, at least for me.

Jeff20B

iTrader: (13)

My friend got one of those OS Graupner engines. It's air cooled and spins backwards comapred to a Mazda rotary. This is to keep the prop on. I've never heard it run, but there is a wav file on the Os Graupner web page (or at least there was 2 years ago when I downloaded it).

matt007

http://www.graupner.de/kat_vmot.htm
http://gm-racing.de/graupner/downloa...kel4.wav:cool:

Bloodroz

http://www.osengines.com/engines/osmg1401.html

61620B

the threat is 8 years old lol....

yoeddynz

I'm a machinist by trade..but now work in a bike shop- if i had my own machine shop id be trying to make a 2 rotor one...and then mount it onto a nice chasis... and then put a rx3 body on top....

hmmmmm

jilo860

pay more attention, the engine is .30 cubic inches. it makes 1.2 hp. sweet rx3 youd have huh?

IanS

iTrader: (4)

I am thinking he is talking about making a 2 rotor RC engine and putting an RC RX-3 body on it.

neit_jnf

iTrader: (17)

or 5cc, and it makes 1.2hp at 18,000rpm when using recommended fuel. BUT, if you use high percent nitro fuel it can make 2hp!!

i got two of them:

https://www.rx7club.com/showthread.p...ghlight=wankel

http://www.rx8club.com/showthread.php?s=&threadid=22546

aerosev

I have one for a RC Harvard I have its a 1970 model and says made in germany on the box, its quite a different design to the one which is on sale now, its porting is more like a sachs engine (its not a pp like the new engines) so I believe its not as powerful as the current model, but it starts a whole lot better, I had one of the new engines for a while and it was hard to get started and you had to have it spinning over really fast for it to even think about it, the old model I can flick the prop over by hand and away it goes! I saw one in an rc rx7 on New Zealand auction site www.trademe.co.nz about a year ago, From memory the guy stated that it had a two speed auto gearbox and when it hooked second gear the wheels would spin! But anyway heres a video of a two of them in an rc tractor !
http://www.youtube.com/watch?v=eOlpiZ0xFzk