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Old March 22nd, 2007, 15:48   #10
Red Tiger
 
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Join Date: Feb 2005
Location: Laurentides , QC
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Quote:
Originally Posted by Jimski View Post
Heya All

I get a consistant 270 fps out of this config W/.25 :banghead:

here's what's inside:

-EG1000 motor
-sp90 spring
-spring guide with bearing
-metal bushings
-prometheus cylinder head
-metal piston
-thight bore internal barrel
-9.6V 1700 mAh Nicad (it's got 20 amps of peak discharge rate, or so the paper sez)

stock cylinder
stock piston head
stock gears

here's what I know:
the barrel is brand new
the gearing + electrics are ok
the spring+guide are brand new
the shimming is surgical

-the hop-up is tired, and doesn't have any apparent effect.
-I think the rubber is not torn but i will have to check.
-the cylinder ensemble may not be so air-proof, but it looks like it is.
does more grease add to efficiency?
-the feeding from the mag is not so trustable due to initial crappiness of the plastic receiver.
can air leak from there ?

this sucks because it's supposed to be an awesome rifle and now it's only a big piece of plastic

Anyway thanks for your help !

Long days and pleasant nights.
Jimski
If you are realy getting 335-338 FPS from a SP90 spring You are actually over the FPS that spring is given normaly.

So nothing is wrong with your setup, a bit the contrary the setup is doing great.

I have achieve from 315 to 325 W 0.20 with this spring on various AEG config.

JF
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