limelite70
Well-Known Member
- Joined
- Mar 1, 2006
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Gts book doesnt list crank part ##s.
How do you tell the difference?
Thanks
How do you tell the difference?
Thanks
cast vs steel crank??
- Thread starter limelite70
- Start date
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Look at the parting lines on the crank. Narrow, peak shaped, (sharp) = cast. Looks just like the molding lines in any cast plastic item. If the lines wide, and has a ground off appearance, it's forged.
1wild&crazyguy
Banned
cast cranks have sharp'ish edges on the counter weights.
steel cranks have the wide parting line and the the weights also look like they were brushed=lines
and the cast crank casting numbers are displayed on raised pads.
steel cranks have the wide parting line and the the weights also look like they were brushed=lines
and the cast crank casting numbers are displayed on raised pads.
bremereric
Well-Known Member
Forged is a hot steel block placed in a mold and then the press comes and presses the crap out of it...leaves wide lines....cast is hot molten steel poured into a sand cast mold that has two halves...thus very fine skinny lines...just like he said about the plastic models..
1wild&crazyguy
Banned
these are twist forged cranks, as in twisted to rough stroke/shape then machined.
kellogg cranks are forged as is with no twisting, more desirable racing piece.
kellogg cranks are forged as is with no twisting, more desirable racing piece.
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