Re Lightening flywheels?

[SailingFC@aol.com]

In a message dated 10/04/1999 6:42:24 PM Pacific Daylight Time, 
JLuk77@aol.com writes:

> I understand the merits of lightened fly wheels, i  just want to know where 
>  to take the metal off, i have access to a brake lathe at work, i think it 
>  will do a good job, any one know for sure?  it would be alot cheaper than 
>  buying one aftermarket so i think i will try it with one of my spares if 
> some 
>  one can give me some giudance as to where to remove the weight.

I agree that it is cheaper to machine down rather than buy a new one.  That's 
what I did.  I didn't machine it myself though.  I took mine to a machine 
shop and they cut and balanced it.  I can see the cutting is easy.  The 
balancing is a bit trickier.  When the shop balanced it, they needed my 
pressure plate.  One, so they have a center to bolt onto and Two, so all the 
rotating mass is accounted for when they spin it.  Here is an after picture 
of my 190 mm flywheel.  He left a small lip on to hold the pressure plate 
just in case there was a catastrophic failure of the mounting bolts.  Notice 
the drill points where he balanced it.  I can't remember how much weight was 
taken off, I'm kicking myself for not writing it down.
GL.

-Dick-
78 Scirocco
Original Owner
<A 
HREF="http://member.aol.com/sailingfc/">http://member.aol.com/sailingfc/</A>

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