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flywheel machining 

 

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 Post subject: flywheel machining
Posted: Mon May 08, 2006 7:16 pm 
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can anyone tell me how a professional machines a flywheel. like do they grind them on a special grinder or can it be done on a lathe?
im a fitter+turner/machinist and a mate wants to know if i can machine his ef flywheel for him.
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Posted: Mon May 08, 2006 7:45 pm 
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they are ground with a stone.

but i've seen them done on a lathe befor.

 

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Posted: Tue May 09, 2006 8:59 am 
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heres something I've cut & paste from the internet. better of taking it to a specialist, that way they can lighten & balance it. most probably re-harden chemically, heat or shot peen.

FLYWHEEL MACHINING

Flywheel resurfacing is critical to clutch performance. It is extremely important to restore the proper step dimension when applicable. Unfortunately there is no specification for maximum machining of a flywheel. The amount of material a flywheel is machined can vary anywhere from .005 to .050 of an inch. depending on condition.

Removing too much material from the flywheel may cause release problems. As the overall thickness of a flywheel is reduced, the clutch set up geometry is changed. In fact, the clutch assembly is moved further away from the release bearing.

Flywheel shims are now available to solve this problem. We DO NOT recommend this procedure because:

(A) The starter drive will not engage the ring gear properly, and (B) Use of flywheel shims could encourage installation of a flywheel that is too thin. Lack of structural integrity may cause a "thin" flywheel to explode.

 

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Posted: Tue May 09, 2006 9:23 am 
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then how many times can you machine a flywheel before it needs replacing??
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Posted: Tue May 09, 2006 9:27 am 
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^you only need to machine it once.
cost around $45- $60 to machine, don't know the cost for the extra.

 

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Posted: Tue May 09, 2006 2:25 pm 
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Bluexr6 wrote:
then how many times can you machine a flywheel before it needs replacing??

Depends on how much you take off each tume :roll:

 

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