[AT] OT WoodPro wood chipper clutch
swilliams268 at frontier.com
Sat Apr 24 00:05:48 PDT 2021
Richard Walker wrote:
> You probably nailed it, Steve O, thanks!
> Measured the water displacement of one existing shoe. Then measured
> weight of that one shoe (Zamak?) as 12 ounces. Calculated weight of a
> shoe if aluminum would be 4.2 ounces. So everything jives within the
> ballpark range of relative densities for Zamak and aluminum.
> I'm doing more web research into use of Zamac for centrifugal clutch
> shoes. Seems to be used a lot. But most employ a thin bonded friction
> facing. A disc could probably be cast from a 4-pound Zamak billet
> ($13), then machined on a lathe like Steve W. suggested, then cut into
> four pieces to replicate the shoes I need.
> Two wild cards remaining are whether there was a friction facing
> originally installed on the shoes that got burned away; and if the
> bearings got ruined because of the high heat. I plan to pull the clutch
> this weekend to check.
> And thanks for the links to new clutches, Thomas. Trying to avoid this
> route because of high cost, but might be a last resort.
> - Richard
Got to wondering about it last night and wondered if it could be a pot
metal alloy like Zamak or similar. Aluminum with zinc and copper, or
similar stuff. I would doubt it had a friction surface, modern clutches
do but most of the older stuff was metal on metal.
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