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Dans Club
March 2, 2008
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This question comes up sometimes, and it seems like the best answer we can come up with is "some play is OK, too much is a problem" and the "too much" part is never clearly identified. I know there must be a way to put a number on this, here's a quick experiment I ran today:
1) Revolver secured, with an electronic caliper I took the dimension from the uppermost edge of the uppermost cylinder notch to the opposite side of the top strap. I was careful to register this dimension in an even plane, that is with just the tip of the top strap caliper engaged on the top strap. Essentially, I was measuring perpendicular to the cylinder axis as evenly as possible from cylinder notch edge to opposite top strap edge.
2) With that dimension recorded, I manually rotated the cylinder clockwise as firmly as possible, and remeasured that same dimension.
3) I repeated the measurement with a counterclockwise rotation, again as firmly as possible
I know that the overall dimension I am measuring will vary from one gun to another, but on the same gun (actually two different ones) so far I have found a total variance of .002" from the cylinder at rest to the cylinder firmly rotated in either direction, and both were evenly split with .001" variance in each direction from the cylinder at rest.
So my question is:
Is this there a reason that this is not a valid way to measure this?
Need some people smarter than me to give some feedback.
I went to a bookstore and asked the saleswoman "Were is the Self Help Section?" She said if she told me, it would defeat the purpose.
George Carlin
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Moderators
January 24, 2009
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I think that sounds like a perfectly reasonable way to measure it.
Maybe some of our gunsmith members could weigh in on this & give this method a seal of approval. Or possibly give a better way to obtain the desired measurement?
Dans Club
March 2, 2008
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I'm hoping however we can check this, we might get some data in from across the Forum to try and get a feeling for how much play there can be and still have acceptable, safe results.
I went to a bookstore and asked the saleswoman "Were is the Self Help Section?" She said if she told me, it would defeat the purpose.
George Carlin
Supporter
Moderators
January 24, 2009
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Sounds good, I'll measure some of mine soon...need to buy new batteries for my caliper.
My 15-2 is easily the sloppiest one I have, so it will be interesting to see how it compares to the others
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