I have a Model A crankshaft at the machine shop that I told them to grind. Today, they called and said it would need to go .030-.030. I know most people wouldn't touch a T crank that worn, but I'm wondering if it is worth it to get it ground. It wouldn't be for my use. It would be for resale. I had bought it to make a T stroker crank, but changed my plans. It'll cost $80 to grind it and I'd have a total of about $125.00 in it.
Since it goes in babbit, can't you grind each throw only as much as needed?
It may be only .022 on the worst one, but if you're doing insert bearings you do them all the same, and get .030.
Grind it to a standard size. Then you can buy rods that fit and you can pour babbitt mains that won't require resetting the cutter bar, which most machinists don't like to do.
IMHO it would still be worth doing. .030 under is no big deal on an A crank.
Thanks for the advice, Stan. I didn't think .030 was any big deal for an A crank, but since it would be for resale and not personal use, I didn't want to pay $80.00 to have a crank ground and be stuck with it, or in so deep that I couldn't get my money back. Of course, I could try to sell it "as is" and tell the buyer that it needs to go .030, but I was having a couple of T cranks done and I thought I'd just do it at the same time.
The problem being lots of crank grinders WILL NOT dress the proper radius on the wheel for that crank's fillets
Who is grinding your cranks?
Ted, I sent you a PM.