On Mon, Jul 26, 2010 at 2:18 PM, David Beierl <dbeierl@attglobal.net> wrote:

> At 03:57 PM 7/26/2010 Monday, Shawn Wright wrote:
>
>> new ones, and have to decide which ones I should have machined. The old
>> ones
>> appear to have plenty of life left - although I don't have calipers large
>> enough to measure them, they seem to be very close to the new ones in
>> diameter. What would you do?
>>
>
>
> Are there any things to watch for in having them machined, or can any
>> decent
>> brake shop do it properly?
>>
>
> I had mine machined once and they came out all wobbly.  Shop said that the
> way VW did the center hole doesn't work very well with US-type brake lathes.
>  YMMV.
>
>
Hmm. Last night I swapped the old drums back on before heading back to the
campsite. The warp on them is barely noticeable compared to the new ones! I
think I'll just leave them on until I can find a decent shop confident in
turning them right.

I did manage a measurement with my caliper depth gauge - the old ones are
about 0.4mm larger than the new. I didn't calculate the overall size, but
this doesn't seem like a lot of wear.

--
Shawn Wright