Westbend Chrysler 820 power bee

[oldrelics]

How will the adapter be attached to the crank? I have a couple of saw engines I would love to put on a mini.
If you use the nut on the end of the crank to attach the adapter, how will you attach the clutch?

The crank bolt holds both clutch and adapter on

 

[sparkwizard]

Can you show a picture of the crank and the adapter, please? Was it built by a local machine shop or a trade school? I am interested in this adapter.

 

[Jim Donovan]

I just machine a one piece hub and sleeve combined, then bore it to 5/8 then machine out the back to 3/4" to an 1" depth before I broach the front 5/8" with the 5/32 keyway. Once I have the front done then I put in an insert in the 3/4" portion and bring it down to 9/16" I usually just but in a oilite bushing in the back since nothing is rotating around on it and it is just there for support on the rear of the clutch. This only works out on larger sprockets for the clutch. A 10 tooth or 11 tooth in the #35 will not work but if they wanted a heavier chain like the #420 or #40 then it is possible to do it for those sprockets.

Most 5/8" bore clutches have a 3/16 keyway and that extra slop will either chip out the crank or wear the clutch keyway real quick and then you have a PROBLEM.