'doorknob' ?? Nice talk, Thunder, don't bother reading on, the rest of the message is for the mechanically competant. I guess this excludes you.
The machining was done in a friends basement machine shop using an antique Bridgeport and a lot of old-time skill. I wanted to see how difficult it would be to make the prototype and prove the concept. Some of the work was done by hand (throttle shaft slot grinding & polishing of the inside of the throttle body) This is the type of job a local shop could do. I have about 6 or so friends that have basic shops where this could be made.
If you want to just do a straight bore the project would be even easier.
Anyway, as Perry said, if anyone is interested I have Powerpoint drawings, photos and a description how to machine a throttle plate at the correct angle (7.8 deg) to give the proper ocal shape and beveled edges. Leave me an eMail message
