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Post by bigbores on May 13, 2010 21:05:42 GMT -5
Seems like the BFR gets compared to the freedom arms or the freedom arms gets compared to customs, what doesn't seem to ever get taked about is the cylinder wall thickness so I put a mic to some of my guns cylinders and here's what I came up with. BFR, 45colt has a chamber to chamber thickness .162" and a chamber to outer-wall thickness of .080" Freedom arms, 475LB has a chamber to chamber thickness of .105" and a chamber to outer-wall thickness of .105" John Linebaugh built .475 has a chamber to chamber thickness .138" and a chamber to outer-wall thickness of .094"  Even with its small cylinder the 83 has got the most metal in the thinnest point. |
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aciera
.375 Atomic
Posts: 2,092
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Post by aciera on May 13, 2010 22:17:05 GMT -5
Have to look where the pressure pushes and pulls. The mid and large frame Ruger 45s have the same chamber to OD thickness, yet they will take different max loads. I was going to start a thread on this ballance, but you beat me to it.
The 2 thicknesses can't be too far apart, and they have different support structures.
Hope others chime in.
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Post by Lee Martin on May 14, 2010 11:33:31 GMT -5
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Post by boxhead on May 14, 2010 12:45:19 GMT -5
Interesting how the ratchets differ so much. Here's a Bowen 500 Linebaugh cylinder.  |
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Post by bigbores on May 14, 2010 14:05:45 GMT -5
"Interesting how the ratchets differ so much" Yes so much for the thought they are all using cylinder blanks! Here's a older 475 that uses the 45-70 brass made by a friend of mine.  |
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Post by bigbores on May 14, 2010 14:14:26 GMT -5
Lee, I have liked every gun I have seen of yours, your have made some great looking guns, and yes I like my cylinders walls like my head "thick"! |
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Post by bigbores on May 14, 2010 14:28:15 GMT -5
Yet another ratchet design This one's on a 500maximum built by Jack Huntington.  |
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greygt
.30 Stingray
Posts: 386
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Post by greygt on May 14, 2010 20:32:04 GMT -5
Someone needs to post a pic of a 353 Casull. That is a 5 shot cylinder with thick walls!  |
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rigby
.327 Meteor
Posts: 769
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Post by rigby on May 29, 2010 16:04:52 GMT -5
Finally got a new caliper so I checked my BFR 475. Heres what I got
Chamber to chamber thickness 0.14
Outer wall thickness .094
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Post by bigbores on May 29, 2010 18:42:04 GMT -5
shows one of the changes BFR made when they went to the JT ser. numbers bigger cylinders! your .475 BFR has thicker cylinder walls than my older pre JT 45colt BFR.
very cool.
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rigby
.327 Meteor
Posts: 769
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Post by rigby on May 29, 2010 18:52:38 GMT -5
Surprised to see that its nearly identical to the Linebaugh cylinder.
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Post by bigbores on May 29, 2010 19:12:50 GMT -5
I'm thinking BFR copied John's cylinder dia.
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