I always buy the Crosman 38c, if I can get one for a good price. I've rebuilt and sold dozens of the series over the years. Have only had two of the first year 1964 production guns, with the brass valve. Picked it up for $60
Crosman I never pass one up
- Thread starter Septicdeath
- Start date
Love/hate for me. Just when I get em shooting great they start giving me trouble again. Still have a couple in parts. Prepping one to be chromed. Always wanted to build one with a dummy cartridge to be tethered to a tank. I'll get around to it some decade.
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For a custom job in mind , any idea what the specs are for the copper tube used on this design ? Can you buy similar copper tube by the inch/metre roll , like from an engineers outfitters ? From a paintabllin perspective , with burst discs and suchlike for safety always a wonder how Crosman came up with using a thin copper tube - that really worked.
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Its not really high pressure, and the tube is very short and well sealed. I don't think it was a terribly weak point. I think trying to make one at home is something I would attempt only if it was impossible to find replacements.
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I need to re-build my 38T, it is very low on power, and leaks co2 after a shot if I hold the trigger back. I thought at first it might just be a blocked inlet filter, but now I think it is more serious trouble in the valve... 
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Don't you just hate it when your best Co2 gun fails ! Been there dude . Nothing for it , but to take it apart, clean out any crud , then polish everything and put it all back together again . If It still fails again buy a Smith & Wesson 78g LOL
Nothing for it , but to take it apart, clean out any crud , then polish everything and put it all back together again . If It still fails again buy a Smith & Wesson 78g LOL Upvote 0
Being thin means there aren't a lot of inches for pounds per square inch to act upon - so the pressure isn't that great. What's more (drawn) copper pipe is pretty good for pressure https://www.engineeringtoolbox.com/copper-tubes-dimensions-pressure-d_84.html and has the added benefit that if it fails catastrophically it won't shatter - it'll just rip / split.
GsT
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Already got a 78G, a 79G, a Daisy Powerline 44 and a Crosman 600...Don't you just hate it when your best Co2 gun fails ! Been there dude .
Hoping to get a Benjamin EB20 soon....
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A dirty little secret...
It seems the main seal in the valve is a tap washer that has swollen up and pushed the valve stem so far away from the hammer that it isn't hitting it with any force.
FFFFFFFFFFFFF.... Fiddlesticks.
Seal kits this side of the pond are like rocking horse poop, so can I get away with making a PTFE one on my lathe, or will I need something softer like polyurethane?
Any help or advice would be much appreciated!
It seems the main seal in the valve is a tap washer that has swollen up and pushed the valve stem so far away from the hammer that it isn't hitting it with any force.
FFFFFFFFFFFFF.... Fiddlesticks.
Seal kits this side of the pond are like rocking horse poop, so can I get away with making a PTFE one on my lathe, or will I need something softer like polyurethane?
Any help or advice would be much appreciated!
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Pride comes before...
YEAH! I made a PTFE seal for the main valve that actually works!
But now the seal between the co2 bulb seal housing and the copper tube has developed a leak.
Tried nipping it up - better, but far from perfect.
Another tear-down required...
YEAH! I made a PTFE seal for the main valve that actually works!
But now the seal between the co2 bulb seal housing and the copper tube has developed a leak.
Tried nipping it up - better, but far from perfect. Another tear-down required...
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