SACair Forum

Low bb velocity problem after spring/motor upgrade

Mar 12, 2006 2:16am
I just finished an upgrade and Im running into problem. Everything runs nice and smooth, with a nice sound when firing. Problem is the bbs are coming out at low speeds, not enough to go more than 10 feet. I pulled the box apart again to check the nozzle and tappet plate, everything looks good. could it be a piston sealing problem? too much air bypassing the piston. Could it be a cylinder sealing problem? Any help or links to another thread would be appreciated.
AGM-65 Maverick:
· Supreme ChancellorMar 12, 2006 2:27am
Put together the cylinder, cylinder head, nozzle, and piston inside. Place your finger over the nozzle and push the piston into the cylinder from the back. How is the compression? Are you barely able to move the piston? Does it go in with no resistance? If this is all good, check your hop up bucking for wear.
HeadOnTactical.com
Mar 12, 2006 5:40am
your cylinder might be backwards. (the hole closer to the front rather then the back)
· Supreme ChancellorMar 12, 2006 5:47am
[quote="sleetster"]your cylinder might be backwards. (the hole closer to the front rather then the back)[/quote]
HeadOnTactical.com
Mar 13, 2006 7:44pm
so to clarify, the hole should be close to the rear. I think thats the problem, because the hole is near the front. If that is the case it makes perfect sense: hole closer to the front less amount of air compressed, less air moving out of the nozzle...etc.
AGM-65 Maverick:
Mar 13, 2006 8:20pm
there also could be crap in ur barrel u shoud check it just in case
if you try to fail but you suceed which do you do?
Mar 13, 2006 8:24pm
..............
Mar 13, 2006 8:33pm
[quote="CPairsofter"]..............[/quote]
you can pay for school but you cant buy class
Mar 15, 2006 5:17pm
thanks for the help, UR now, it was the cylinder. now it shoots about 380+.
AGM-65 Maverick:
Mar 16, 2006 12:39am
yay i helped! :D