Grant, I don't have an easy solution for you. I was curious how big a whole
sheet is, and how a big sheet would be shipped without breaking it (the
package value is more than the product value), and what kind of price you're
seeing for a whole sheet.

The only suggestions I could think of would be to try your local
bearing/industrial supplier, or a shop that rebuilds car/truck automatic
transmissions.

The last chain hoist I had apart was a poorly made $15 Chinese 1 ton unit.
The brake disk in it had chips in it that looked like brass, and was a free
floating disk (closer to 1/8" thick, about 4" in diameter, with maybe a 1"
center hole)

WB
..........
metalworking projects
www.kwagmire.com/metal_proj.html


"Grant Erwin" wrote in message
...
I have an ancient chain hoist which wasn't holding the hook. As fast as I
cranked it up, the hook would slip back down once I let go of the chain.
I tore it down and found that the friction clutch disc had worn to the
point
where it hardly bore.

This is an awesome old chain hoist which Ernie gave me. I really want to
make
it work correctly again. Has anyone else solved the problem of where to
get
a custom one-off replacement friction disc?

For an explanation of how the friction clutch works in a chain hoist, see:
http://tinyurl.com/2nkh5j

I see lots of manufacturers of friction material listed on thomasnet.com,
but
finding one which will make an affordable one-off part for me is totally
another
thing. If I had to, I could buy the smallest sheet possible and make the
disc
on a lathe, using a method about like this:

mount an X-acto knife in a boring tool on center height, parallel to lathe
axis
put a lathe center in the lathe spindle
move the cross-slide until the knife point is on the lathe axis
i.e. pointing exactly at the lathe center
zero the cross-slide dial & remove lathe center
put the faceplate on the lathe spindle
cut a disk of plywood the size of the faceplate
cut a disk of the friction material the size of the plywood (or smaller)
punch identical bolt circles in the material and the plywood
bolt through to the faceplate, so its faceplate|plywood|friction material
crank the X-acto knife out the radius of the inner hole
start the lathe and feed the knife in, cutting out the ID
crank the X-acto knife out to the radius of the disc OD
cut out the disc

But I don't want to buy a whole sheet!

Anybody been through this?

Grant


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