Being a Rotary fanatic and having owned a first and a second generation RX-7's and seeing that I can't afford a 3rd gen or RX-8 yet, I gave myself a consolation prize: Two Peripheral Ported Wankel Engines!!

pic

One New and one used (you can tell by looking at the ports) both for $400 total...

The mounting base is Rotary Shaped!

Awwwe, aren't they cute little wankles. When were they born and what did they weigh? Keep feeding them 92 octane or better and maybe they will grow up to be a Renesis. Just make sure youu drown them in gasoline. J/K

What are they for and what are you going to do with them?

Tell us more about them.

They are 4.9cc or 0.30 cu in displacement and can put out 1.25 to 2 hp @ 17,000 rpm each depending on the fuel. Now I ask you for ideas on a project on what to do with them! I do own a Traxxas T-maxx with the TRX 2.5cc one-piston two-cycle engine (1.3 hp @ 30,000 rpm) I was thinking on converting it to twin-rotary... Are there any small scale turbos around? :D I did disassemble them (sorry forgot to take pictures) and they have one-piece apex seals with double springs but no side seals, the rotor sides mate very closely to the side plates to provide it.

Originally posted by D MENAC 7
Awwwe, aren't they cute little wankles. When were they born and what did they weigh? Keep feeding them 92 octane or better and maybe they will grow up to be a Renesis. Just make sure youu drown them in gasoline. J/K

What are they for and what are you going to do with them?

Tell us more about them.

They arrived yesterday and they weight 12.3 oz each (How about that for power to weight ratio? 6 oz per hp!!) The serial numbers on them are P.025 and P.092, maybe they among the first 100 Peripherals made? (the previous version had a different intake)

They are made in Japan, where else?, by OS engines with agreement with Graupner. They're mostly used for model airplanes but I'm not into that so that's why I'd like to use them for my truck or maybe a custom scale RX-7(8)

I have seen R/C Car Action modify a monster truck to accept a rotary engine but I can't remember if I own that issue or just seen it somewhere else. I think you'll have one hell of a time trying to fit that mount in the Maxx, but goodluck on it anyways. I don't know about using the stock T- Maxx chassis but a custom one should do the trick. Personally I wouldn't use the brand new one because they don't make them anymore (or at least I don't think they do) and it would worth something in the future.

check this puppy out :D I'm confident you can do the mod to this chassis better to accept the twin rotary set-up...

I'd love to see that article on the magazine! Adapting the engine(s) to the chassis is not really the hard part, it's coupling the output shaft to the transmission what's going to be difficult. Since they're airplane engines, they have mounts for a propeller and I'd need to adapt a clutch bell with output gear to be able to couple it to the tranny.

They still sell them new at a few online hobby stores like towerhobbies, I've seen the price range around $340~$460

ouch, that's really really pricey. i think i'd rather go karting.

anyhoo, super f*ckin' awesome. those are sickeningly sweet motors. what you really should do is make an unbelievably powerful and fast robot warrior with twin rotor power ;) direct drive baby!!!

There're a few details I've seen about these motors on the internet:

-Perfect mechanical balance, the only vibrations are those of the power pulses.

-Very smooth and powerful for their size and weight

-Thirsty for fuel

-Hotter than piston engines

-Require a higher percent of oil in the fuel mixture than piston model engines

-Distinctive sound

-Highly durable and reliable

Sound familiar?

An interesting thing is the break-in procedure as per the manual, set with a rich fuel mixture and run at FULL THROTTLE! :eek: for 5 minutes then cool down and repeat 5 or 6 times.

Tig Bitties