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Shim Swap Thread

  • Thread starter Thread starter robertob
  • Start date Start date
tkent02 said:
I'm thinking I would rather turn my shims down than swap them by mail all around the country.
Seems like if you took a valve lapper suction cup, and glued it to a shim you could spin it on a piece of glass or a flat steel plate, use lapping compound for an abrasive.
Or maybe stick a piece of wet or dry sandpaper to the glass or plate. Maybe turn the suction cup with a drill?
Anyone else have an idea on how to turn a shim down a bit thinner using tools most of us have anyway?
Click to expand...

Maybe this shim swap thing might get a little out of control.
I sent one out to someone already, but now who gets the next ones if 5 people ask for a 2.65?
Are the shims a solid alloy metal or is it coated? If it's coated somehow then turning them down might eventually get through that coating and cause problems?
 
lurch12_2000 said:
Maybe this shim swap thing might get a little out of control.
I sent one out to someone already, but now who gets the next ones if 5 people ask for a 2.65?
Are the shims a solid alloy metal or is it coated? If it's coated somehow then turning them down might eventually get through that coating and cause problems?
Click to expand...

You put the ground side facing down towards the bucket. I had some of mine surface ground and then demagnetised. worked like a charm. No probs.
 
the last thing i want.....

the last thing i want.....

lurch12_2000 said:
Maybe this shim swap thing might get a little out of control.
Click to expand...



well, the last thing ANYONE wants is more hassle with these old beauties....i can certainly afford to buy the shims i need.....i guess this feels like good old fashioned church fellowship [-o<. anywhat....pm's sent! and if i cant get hooked up in a day or so, i will just order them up from z1. hmm....maybe i should get some braided steel lines while im at it, i mean, i have to pay shipping anyway....and maybe that 4-1......hmm.....gonna need those progressive shocks and fork springs.......:-D....

greg
 
greg78gs750 said:
..i can certainly afford to buy the shims i need...
Click to expand...

I can afford them, sometimes I'd rather not wait days to get the correct ones, and sometimes I'd rather go make myself a 2.57mm shim instead of leaving a valve at either extreme of the .03 - .08 tolerance. I could make them all exactly .05 if I wanted too.
I would certainly rather spend five minutes changing the thickness of one or two shims myself than go through all this monkey motion.
So does anyone have a method for thinning shims involving the use of normal tools and not a machine shop?
 
Last edited:
well, i was thinking you could lap them on a stone, i was going to suggest a diamond stone because they are fast, but you would want to watch out for magnetization....the fine sandpaper glued to a plate glass might work too....works for flattening woodworking tools, and you can get a mirror polish on those with fine grits. worth a shot?
 
tkent02 said:
I can afford them, sometimes I'd rather not wait days to get the correct ones, and sometimes I'd rather go make myself a 2.57mm shim instead of leaving a valve at either extreme of the .03 - .08 tolerance. I could make them all exactly .05 if I wanted too.
I would certainly rather spend five minutes changing the thickness of one or two shims myself than go through all this monkey motion.
So does anyone have a method for thinning shims involving the use of normal tools and not a machine shop?
Click to expand...

Well, if you have an accurate micrometer I'd just lap those suckers down on a glass plate with a sheet of 600 grit wet-or-dry taped to it. Keep checking around the edge to make sure you aren't making it angled.
 
I tried this... it does work but you end up taking the skin off the tips of your fingers & it takes forever to make any progress. I didn't use a valve lapping tool though which might help matters. (Guess you could also spin it with a drill/driver).

Not really recommended my way because it took so long. I did it because I was stuck & nobody had stock of the 2.6 at the time. I used 800 grit with 2000 to polish them back up.

Dan :)
 
i,ve ground down 6 shims, done them on the side of a grinding wheel while holding the shim with a valve lapping suction cap,at the same time rotating the cap so as to evenly grind them down, it take about half an hour on each one because you have to cool them down in water every couple of minuts other wise the rubber cap get hot and may start to melt, i,m sure there case hardened all the way through , thats why its time consuming, the first couple i did, i used a large blob of Blu-Tac to hold the shim but was a bit weary of my fingers being to close to the grinding wheel.
i know they are cheap to buy but mine was a time problem
 
well, im all shimmed up!!! thanks guys!! though i COULD still use a 2.65x if anyone still has one......pm me

this forum is my hero.
 
salty_monk said:
Need 2 x 2.75 shims

Have a 2.80 & a 2.85 I can switch out.

Dan :)
Click to expand...

Dan,
Think I've got a couple of 2.75's, don't need any as thick as you have though. You are welcome to the shims if it means getting the bike on the road. Give me a call.

Ed
 
Great, thanks! That's what I did today, valve cover off & checked the valves, 3 out of spec but one I could swap to another to make two.

DJ Kit & tyres are still in the post so no movement on that front yet. I have an order to go into Z1 in a week or two & can replace shims then with ones of your choice if you like.

Dan :)
 
Anyone have a 2.70 shim? I need two. I will keep looking elsewhere in the meantime. I have some to trade, but they are 2.80, I haven't seen a need for any that size yet.

Cory

Also, thank you Ray for the 2.75!!!
 
how are you able to check the size of the shims with out taking them out?

Shane
 
KRISTI'SGS550 said:
Anyone have a 2.70 shim? I need two. I will keep looking elsewhere in the meantime. I have some to trade, but they are 2.80, I haven't seen a need for any that size yet.

Cory

Also, thank you Ray for the 2.75!!!
Click to expand...

I might have 2 of them. I'll check on Tuesday
 
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