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Author Topic: reground crank  (Read 3059 times)
Peter
Hero Member
*****
Posts: 1301



« on: February 11, 2007, 14:09:09 pm »

hi guys,
i just got my new crank yesterday..
its a dpr and the box says:
mains: 10
rods: 10
its kinda stupid to ask, but that means that the crank is 0.010 inch undersized right?
this corresponds to  0.25 mm undersized bearings ,ok?

thanks, Peter
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Fastbrit
Hero Member
*****
Posts: 4731


Keep smiling...


« Reply #1 on: February 11, 2007, 14:56:06 pm »

That's correct. It's common to grind a welded stroker or counterweighted crank to first undersize to make sure the journals are straight.
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Der Kleiner Panzers VW Club    
12.56sec street-driven Cal Looker in 1995
9.87sec No Mercy race car in 1994
Seems like a lifetime ago...
Peter
Hero Member
*****
Posts: 1301



« Reply #2 on: February 11, 2007, 15:42:05 pm »

thanks dude! Grin
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nicolas
Hero Member
*****
Posts: 4010



« Reply #3 on: February 12, 2007, 20:41:20 pm »

jumpin on the wagon here!!! but how much can you safely go? i have one that is shipped to me and has been cut 0.5mm under. i know i can get bearings for this size but can you cut it again if nessecary?

thanks and sorry 'bout that  Wink
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Fastbrit
Hero Member
*****
Posts: 4731


Keep smiling...


« Reply #4 on: February 12, 2007, 23:52:53 pm »

0.50mm (20 thou) is common enough. Two more grinds available after that.
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Der Kleiner Panzers VW Club    
12.56sec street-driven Cal Looker in 1995
9.87sec No Mercy race car in 1994
Seems like a lifetime ago...
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