After a few hours use my M3 .22 cal developed wild velocity inconsistency and after hours of searching forums for advice found the problem to be what I believe to be referred to as the C-1 Top Hat, it was freely turning on the valve rod which it's NOT supposed to do being set from the factory. This changes the proportional value between the valve spring adjustment and hammer spring resulting in severe tune inconsistency. HAS ANYONE had to deal with this problem, is it common on the Impact design? Took multiple attempts using calipers and red loctite to get it reliably set at 6mm.
FX FX M3 C1 ''TOP HAT'' issues
- Thread starter Wolferine
- Start date
Normally its red loctited so no it isn't a problem and your measurement can be 5.5 to 6 i think
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Thank you, mine was loose as a goose and a big problem to sort out for a newbie. I had no idea what was wrong but had to learn.
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you don't really need red. Blue or even a drop of CA. Heat is your friend with releasing most thread lock.
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It’s been an issue for many many years. But it should never bite you again once you start working on the gun yourself. And if you don’t beat the piss out of the C1 with some dumb tune or use a flimsy little valve spring. Red loc-tite? Absolutely no freakin way. Chemically clean the threads and inside the C1, then use blue. If you clobbered the C1 so bad that you now have sloppy threads, replace the valve rod and C1 or whatever they are calling it now. I’m sure it has a new part number.
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I've used red but If i had to loosen it i would heat it with a torch for 20 seconds and usually would spin loose no problem maybe I was lucky idk
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My thought was the way the c1 gets clobbered you don't want it to loosen up just my opinion those small threads can be pulled though like stated and can be a pain in the butt to trouble shoot
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This ^^^
just another reason not to YouTube your Impact. The list of negative side effects is long.
Happy to see the OP digging in and finding and fixing on his own. great guns just not for the mechanically adverse among us.
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