Airsoft Canada - View Single Post - Thunder maul

ScooterVauto · February 26th, 2011, 20:24

Hello folks
== History == Bought from a bone yard shooting 19RPS @ 140 FPS.
SB Black Version 2 JG mechbox.
rebuilt mechbox and replace stock wore parts with TM psiton head, SystemA
Cylinder head, Guarder Tappet, TM nozzel, Dboys Cylinder (ported) TM Spring Guide & PDI 130% Pro Spring.

I matched the dboys ported Cylinder with the 6 inch inner and outer barrel it
came with, so to that the cylinder matches the barrel lenght.
The Cylinder that was in it was chorme plated, the piston head path inside was wore to the brass -- THE ENTIRE piston head path.
Many many BBs have been fire prior to this purchase.

Assembled it and the speed came up to 216 FPS.
Tested the mech box in another M4 through a SystemA hopup, Guarder Black rubber (normal Nub) & a 455mm Promethus TBB the Speed was
7 out of 10 378, 2x 379 & 1x 380 Dame consistance and Shooting fast.

MechBox Checks out For sure.

the upper and lower are TM clones with a 2 piece hopup
I have gone so far as to remove the stock hopup upper assembly and replaced it with a TM from my M733, and my 455mm Promethus TBB
and it still shoots under 200 FPS.

The Stock Nozzel was 1mm shorter then a regular m4 nozzel so i assumed it was wear but as its a TM clone, the proper Nozzel should be an M4 nozzel
so i replace it with the one from my M733..
Dam i am stumped...

Please any help would be greatly appreciated.

February 26th, 2011, 20:24	#1
ScooterVauto Trader rating Join Date: Jun 2010 Location: Edmonton	Thunder maul - Dragon Low FPS miss feeding Hello folks == History == Bought from a bone yard shooting 19RPS @ 140 FPS. SB Black Version 2 JG mechbox. rebuilt mechbox and replace stock wore parts with TM psiton head, SystemA Cylinder head, Guarder Tappet, TM nozzel, Dboys Cylinder (ported) TM Spring Guide & PDI 130% Pro Spring. I matched the dboys ported Cylinder with the 6 inch inner and outer barrel it came with, so to that the cylinder matches the barrel lenght. The Cylinder that was in it was chorme plated, the piston head path inside was wore to the brass -- THE ENTIRE piston head path. Many many BBs have been fire prior to this purchase. Assembled it and the speed came up to 216 FPS. Tested the mech box in another M4 through a SystemA hopup, Guarder Black rubber (normal Nub) & a 455mm Promethus TBB the Speed was 7 out of 10 378, 2x 379 & 1x 380 Dame consistance and Shooting fast. MechBox Checks out For sure. the upper and lower are TM clones with a 2 piece hopup I have gone so far as to remove the stock hopup upper assembly and replaced it with a TM from my M733, and my 455mm Promethus TBB and it still shoots under 200 FPS. The Stock Nozzel was 1mm shorter then a regular m4 nozzel so i assumed it was wear but as its a TM clone, the proper Nozzel should be an M4 nozzel so i replace it with the one from my M733.. Dam i am stumped... Please any help would be greatly appreciated. __________________ A single Light is all one needs to find their way through the darkness, But a single BB is all you need to bring it on! ========== Im not worried about the Bullet that has my Name on it, Im worried about the bullet that says "to whom it may concern" Lt. Alexander Washington -(Red Tails 1944) Ret.