OT Model A crankshaft size

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Model T Ford Forum: Forum 2013: OT Model A crankshaft size
Top of pagePrevious messageNext messageBottom of page Link to this message  By Terry Woods, Katy, Texas on Monday, June 17, 2013 - 10:58 pm:

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.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ricks - Surf City on Tuesday, June 18, 2013 - 12:10 am:

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.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Stan Howe Helena, Montana on Tuesday, June 18, 2013 - 01:43 am:

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.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Terry Woods, Katy, Texas on Tuesday, June 18, 2013 - 02:52 pm:

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.


Top of pagePrevious messageNext messageBottom of page Link to this message  By John W. Oder - Houston, Texas on Tuesday, June 18, 2013 - 03:01 pm:

The problem being lots of crank grinders WILL NOT dress the proper radius on the wheel for that crank's fillets


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ted Dumas on Tuesday, June 18, 2013 - 06:25 pm:

Terry,

Who is grinding your cranks?

Ted


Top of pagePrevious messageNext messageBottom of page Link to this message  By Terry Woods, Katy, Texas on Tuesday, June 18, 2013 - 11:35 pm:

Ted, I sent you a PM.


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