P90 upgrade question

Curtis Tactics · February 7th, 2007, 18:11

I plan to upgrade my p90 with a m4a1 length tightbore (6.04) barrel, a SP85 spring with steel bushings. overall that brings the fps to about 317.5 fps
my question is will a 8.4V battery suffice?
also about shims i watched the mechbox.com upgrade video, they talk about the spacing of the gears. after i install metal bushing, will replacing the old shims be fine or do i have to add more or remove shims to get the right spacings?
thanks in advance Curtis

thephenom · February 7th, 2007, 18:46

If it's your first time doing upgrades, most would suggest to get it done by a professional, and ask if you could watch on the side to learn your way around.

Curtis Tactics · February 7th, 2007, 18:49

ok, but how about that battery?

XxNewbyxX · February 7th, 2007, 21:21

i run an 8.4v in my tm m14. I currently have a 170% PDI spring, metal bushings... and some other fancy stuff but no need to go into detail. an 8.4v will work.

Curtis Tactics · February 7th, 2007, 21:25

i guess that answers it thx Newby

thephenom · February 7th, 2007, 21:28

Quote:

Originally Posted by XxNewbyxX

i run an 8.4v in my tm m14. I currently have a 170% PDI spring, metal bushings... and some other fancy stuff but no need to go into detail. an 8.4v will work.

You probably use a 8.4v Large, but the P90 can only take 8.4v mini.

With a SP85 spring, you'll have no problem with a 8.4v mini.

Curtis Tactics · February 7th, 2007, 21:39

Quote:

Originally Posted by thephenom

You probably use a 8.4v Large, but the P90 can only take 8.4v mini.

With a SP85 spring, you'll have no problem with a 8.4v mini.

that works out perfectly

thanks again

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February 7th, 2007, 18:11	#1
Curtis Tactics Trader rating Join Date: Sep 2005 Location: Coquitlam B.C.	P90 upgrade question I plan to upgrade my p90 with a m4a1 length tightbore (6.04) barrel, a SP85 spring with steel bushings. overall that brings the fps to about 317.5 fps my question is will a 8.4V battery suffice? also about shims i watched the mechbox.com upgrade video, they talk about the spacing of the gears. after i install metal bushing, will replacing the old shims be fine or do i have to add more or remove shims to get the right spacings? thanks in advance Curtis __________________ "Fight fear. Fight distress. Fight chaos. Fight with the Canadian Forces."

February 7th, 2007, 18:49	#3
Curtis Tactics Trader rating Join Date: Sep 2005 Location: Coquitlam B.C.	ok, but how about that battery? __________________ "Fight fear. Fight distress. Fight chaos. Fight with the Canadian Forces."

February 7th, 2007, 21:21	#4
XxNewbyxX Trader rating Join Date: Sep 2005 Location: Penticton B.C.	i run an 8.4v in my tm m14. I currently have a 170% PDI spring, metal bushings... and some other fancy stuff but no need to go into detail. an 8.4v will work. __________________ "there is no greater feeling than to be shot at without result" -Winston Churchill

February 7th, 2007, 18:46	#2
thephenom Trader rating Join Date: Jan 2006 Location: Toronto	If it's your first time doing upgrades, most would suggest to get it done by a professional, and ask if you could watch on the side to learn your way around.

February 7th, 2007, 21:25	#5
Curtis Tactics Trader rating Join Date: Sep 2005 Location: Coquitlam B.C.	i guess that answers it thx Newby __________________ "Fight fear. Fight distress. Fight chaos. Fight with the Canadian Forces."

P90 upgrade question

Upgrades & Modifications