How would one fabricate a 1 rotor rotary engine? What would it take, exactly, to do this? Would need two side plates, a housing, and a way to move the oil through this? Trying to make the smallest possible rotary. Any advice would help

 

with all rotary engines weather u add or take away the major cost is the fabrication of the eshaft. it has to be precission miled ad ballanced

there is a 1 rotor go cart motor used to be made for a snowmobile or somthing

 

I think Atkins deals with 13B one rotors.

-billy

 

one lunger rotaries can be found in artic cat panthers from the mid 70's They where made buy sachs.

 

Yes, Atkins does (or at least did, I'm pretty sure they still do) make one-rotor kits.

 

http://www.youtube.com/watch?v=CIbV9w4fRGg&NR=1
i looked at one once almost bought it.

"savkel sp440 engine 440cc single rotor made by israel in the 70's. air cooled but have a conventional oiling system with a pump sump and oil metering injection. 7.6:1 compression," 22-30 bhp

 

Get a hold of Racing Beat as they built and tested single rotor engines for NASA back around 1982, so they may also be able to shed some light on the process... or if you mean really small go check out an O.S. Max single rotor engine made for the model (miniture) airplane market...

 

yeah i want 1 slice

 

call Atkins as someone else said they already have them built and have used them in various applications, racing beat did do some custom development work with them but have not done any recently that i am aware of so they are not ramped up to produce the special shaft, i know that atkins had multiple versions with different HP ratings they also already had things like manifolds, intake systems and other issues addressed, they had been working with several different companies that difficult packaging requirments size wise (ie boats, planes, commercial equipment, generators) so they can probably fit your packaging needs. Another plus the shafts they are using are not cut down 2 rotor shafts but totally new construction.

 

Yeah I've had a chance to see some of the shafts and completed engines in various stages of build. He uses a weber carb setup on some of them and a new oil fill tube in the front cover with a dipstick built into the cap. Also mods the distributor reluctors for a DIRECT FIRE (wowee!) ignition. Even has a sharp looking small aluminum dizzy cap.

I simply must do a 1 rotor some day and I'll work with Atkins on the details.

 

There is a website with them for sale. Small version and large. 50-300hp.

 

Where? I'm looking to fab one into a go-kart for local races. It'd be the first around, i believe. 50-300 HP. I'm thinking 150 would be awesome. >=)

 

If you are looking to do somthing out of a mazda rotary I think a front plate with all the front cover parts, the rear plate, and a rotor would be easy enough to come up with. You would just need to find an e-shaft and figure out balancing for it. Alternatively, you could find a Suzuki RE5 motor, used ones come up on ebay regularly. Its basically the same size as a single rotor 12a would be and they are 62HP with the stock carb.

 

You might look at Kawasaki and suzuki forums. I believe both made single rotor motorcycles 20-30 years ago. Also NSU in Germany made a single rotor 50 hp engine for the Spider in the late 60's. (similar layout to the old Fiat 850 sports car.) The NSU people hadn't figured out the seal material (seals lasted about 50k miles and were virtually unrebuildable.) and thus they sold the Spider in the U.S. with a certificate for a second engine.

As far as shortening the Mazda rotaries, the e-shaft is the problem as stated by another poster. It is also why it is so difficult to build a 3 or 4 rotor engine. Theoretically, you could just get longer bolts and connect center housings to make a rotary with as many rotors as you wished. (think of a 10 rotor engine with even the stock 80 hp per rotor found in my 89 GTU n/a = 800 hp BEFORE engine mods!) Build a forged, balanced e shaft with connecting sleeves to connect each 2 rotor section, intake and exhaust manifolds and a way to cool the monster and away you go. Of course the fabrication would require a very complete machine shop and foundry.