Hi guys, having trouble with my bar 10 based enfield, I'm getting fluctuations between 350 and 390fps with .25s. Now I've checked the cylinder head is sitting nicely in the hop rubber, and from the looks of it the seal is leak free but I'm no expert, anyone got any ideas?
Cheers
Dan
spring twisting or possibly snapped in the cylinder?
vsr hop rubbers are notoriously leaky, there's a trick of tying dental floss around the end of the rubber tightly before building the rest of the hop around it ,be careful not to interfere with the hop arm.then see if its more consistent, also give the piston an overdose of lube as if there's a dodgy seal on the piston then it will cure it temporarily and may need a new seal.
armoury
m1a1 Thompson,sten mk2,mp40,stg44,sterling,mk2 bren gun,lee Enfield no4 mk1,Mauser Kar98, Walther ppk,smith and Weston m10 and Mauser m712
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dental floss
Or even better ptfe tape.
dental floss
Or even better ptfe tape.
I think Dadio is referencing a slightly different mod which does indeed need dental floss rather thank PTFE tape. The idea is to compress the rubber of the hop to create a seal rather than "plugging" the gaps with PTFE.
full article here: [link]http://www.filairsoft.com/forum/showthread.php?t=110238[/link]
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Interesting... in actual fact both might be even better. 
Belt and Braces...
This looks like a great idea guys thanks! also got a new cylinder head on the way, quite a few plier marks, well..it wasnt a easy build 
will report back once I buy some floss..mines well old, i want structural integrity with this!
That mod worked well! It was great, but it turns out I've got a air leak around the piston too! But getting there, 370-90 now,
Thanks for all the help guys
