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Old 04-15-2014, 12:11 PM   #16
drjason OP
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Well, I called Re-Psycle and asked them to send me one more of the light wrist pins and one stock. I was leaning towards using the light wristpin because it seemed good quality, but, unfortunately, the second light wrist pin is EVEN THINNER. Again, the outside dimensions are identical to the stock and it would work, but this one is only 74g.

On the top are the first light pin, then the old one. On the bottom are the ultra-light pin, and then a good, used stock.


So I guess I will go stock because I can't wait anymore, and the stock are the only two I have that weigh the same. But I would love to know who made these wrist pins and what their track record is.
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Old 04-15-2014, 06:58 PM   #17
bmwrench
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It's impossible to know for sure, but they are probably both Luftmeister. Years ago, I spoke to the man who ran Western Wristpin. Against his better judgment, he had made some .080" wall pins for Luftmeister and was very skeptical about their likelihood of survival.
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Old 04-16-2014, 01:22 AM   #18
chasbmw
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When you get the new original wristpins, use a digital scale to check that each piston and wristpin combo weighs the same. use a file on the end of the wrist pin of the heavier assembly to even them up.

It's just a very quick and dirty way of removing a bit of imbalance on an airhead.
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Old 04-16-2014, 03:41 PM   #19
drjason OP
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Quote:
Originally Posted by chasbmw View Post
When you get the new original wristpins, use a digital scale to check that each piston and wristpin combo weighs the same.
The problem is finding a digital scale accurate enough to be useful. The one I have can only measure in increments of one gram, or a tenth of an ounce. Does anyone have suggestions on a reasonably priced scale with enough accuracy to be useful in this regard?
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Old 04-16-2014, 04:51 PM   #20
disston
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I have a Ohaus Triple Beam scale. Way accurate down to maybe 0.1 gram. Much more than needed. These are available used. Very common.

The one I have used to be my X'es dealers scale. I've thought maybe I should somehow clean it but haven't bothered.

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Old 04-21-2014, 06:45 PM   #21
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Quote:
Originally Posted by drjason View Post
The problem is finding a digital scale accurate enough to be useful. The one I have can only measure in increments of one gram, or a tenth of an ounce. Does anyone have suggestions on a reasonably priced scale with enough accuracy to be useful in this regard?
In Denver, this should no longer be a big problem
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Old 04-21-2014, 10:34 PM   #22
disston
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In Denver, this should no longer be a big problem
I think she dealt more than Pot so it might be a problem.
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Old 04-22-2014, 02:17 AM   #23
rambozo
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Carb or brake cleaner is good for cleaning undesirable residue off scales

(So I've been told, of course I have no personal experience )
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