I don't believe the coupler I bought would explode at the rpm we are talking about as BMW will have over engineered them, at least not for several years but I take the point.Bratitude wrote: ↑Sun Sep 20, 2020 11:55 pm
If arlins dyno explodes, it’s doing it in a isolated location. It’s not a moving in a vehicle in public.
I’d rather have something explode when stationary, than when I’m moving at 120km on a highway. With traffic.
you can do a lot of things, and some of which are done by folks on this forum. Is it a safe methodology? No. dose it work? Yes.
Personally, looking at the full cost of making a coupler for the leaf out of clutch disks, raw material and machining made no sense to me.
it just made more economical sense to get a batch of custom couplers made. I didnt have personal access to a lathe big enough, or welding equipment capable.
machining down splined centres and interface fitting them in a rotex or love joy, is a safe way forward.
So assuming this coupler is not suitable it would be a simple thing to have a similar shaped coupler water jet cut from 1/2" steel along with the triangle adapters. Doing it this way would allow me to use bolts to assemble it and test for alignment before welding everything up including the coupler. It would probably be more accurate too as my measuring of the BMW coupler will not be perfect.
Building it like this brings up another question though, would adding all this weight to the coupler cause issues with the bearings in the motor and gearbox?
Machining the splines would be a last resort for me as there is no return and no second chances if it goes wrong and your £500 motor is now virtually worthless.