You can tell you live near Boeing when machinists mention 7075 aluminum. Either is likely a stronger material than what the transmission it is bolted to is made from.
Are you sure he didn't mention AISI 4140 steel? It is similar to 4130, it just has a bit more carbon. It would also be a good choice. Seth Gary Graunke wrote: > > I'm using the smallest of Victors Siemens AC drive, the 92 lb,18KW 5105WS12, > for my Insight conversion. It has a female DIN 5482 involute spline with 12 > teeth. See http://www.omnigearandmachine.com/DIN5482-involute_splines.htm > for details on this spline. > > Since I'm omitting the clutch (yes, I have deviated from Wayland's dream a > bit, and plan to eventually fix it in 2nd gear, since >100 mph is already > too fast for my modest street use), the coupler will have a female spline to > mate with the Honda transmission on the other end. The downside is that a > coupler to the clutch plate would be more universal for subsequent > conversions which upgrade the clutch, rather than restricted to the Honda > transmission. > > Today I took the motor and transmission, as well as lots of data and > drawings of the motor and coupler to American Machine and Gear, a local > (Portland, Oregon) shop that seems to be recommended from a variety of > sources. After considering the application, they suggested 4041 tempered > steel (I didn't write it down immediately, so there may be some further > attributes that I missed). I'll try to capture the exact material for > documentation purposes when I pick it up next week. > > Was it the same motor that you used? It is helpful if we can develop a list > of suppliers that have built particular parts, since it is much cheaper to > build the second and subsequent part. Not to mention the benefit of > following a well worn path of things that have worked for others. I know > Victor is working hard to make this happen, too. > > Incidently, I used type 6061 T561 aluminum for the adaptor plate. It has > worked well for Victor, but the machinist suggested that type 7075 would > have been a more optimal choice. I was hoping to get some input from the > list before starting, but, unfortunately, it was down. So I'll rely on their > experience, but it would be nice to add this to the wealth of information > that is this list. > > Gary > > > What spline do you need for the motor end? We had Webster Gears machine > the > > male splines for the Siemen's motors that we are using. If it is the same > > spline, they might be a good place to have it made. > > > > Cliff > > ----- Original Message ----- > From: "Gary Graunke" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Wednesday, October 02, 2002 5:55 PM > Subject: shaft coupler material > > > What material is best for a direct drive coupler? I'm having a coupler > made > > that connects an A/C driver motor (max RPM 10,000) to a Honda Insight > > transmission shaft. The piece will be machined with male spline on the > motor > > end, and a female spine on the tranmission end. The max torque is 92 > ft-lbs. > > > > Regards, > > Gary > > -- vze3v25q@verizondotnet
