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G&G M14 low fps help?
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glenbrooks
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Jul 2010
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#1
G&G M14 low fps help?
27 May, 2014, 20:10
Hi lads
I have a G&Gm14 vet, it has the upgraded G&G piston and piston head. a twist inner barrel and tm hop rubber. with a guarder sp90 spring I only get 280 fps max I was looking for about 330 ish, any advice? I have a sp130 spring here also with that I get 400 fps max, would I be best cutting down the 130 or getting say a 110 spring? any advice welcome , as I said looking for the 330 fps mark.
thanks glen
p.s is most say cut the spring is it about 10-15 fps per coil?
Antny
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#2
27 May, 2014, 20:49
Re: G&G M14 low fps help?
Have you checked all the air seals?
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glenbrooks
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#3
27 May, 2014, 21:10
Re: G&G M14 low fps help?
I seem to have no compression, so maybe new cylinder?
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Mickydoos
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#4
27 May, 2014, 21:14
Re: G&G M14 low fps help?
Well seeing as a M90 spring should get you about 295fps I'd say you should get a sp100 and that should get you a lot closer.
Before you buy anything else, check your cylinder compression and barrel to hop connection for leaks first.
- - - Updated - - -
Originally posted by
glenbrooks
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I seem to have no compression, so maybe new cylinder?
Try soaking your piston head orings in silicone. Failing that a larger oring. Ported piston heads and help a lot with this. Very rare you have to replace the cylinder itself.
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glenbrooks
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#5
28 May, 2014, 19:01
Re: G&G M14 low fps help?
thanks lads, will have a look at the m14 tonite
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ex army..infantry 8 tours under my belt now here just for fun Find out more about
glenbrooks
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