Airsoft Canada - View Single Post - [CM048S] Piston head bearings stuck, piston not travelling, cylinder head/nozzle questions (Spring issue fixed)

Xedilian · July 22nd, 2015, 04:57

NEW ISSUES HERE

ISSUE #1 : The 7 tooth SHS piston I ordered and the SHS piston head don't slide freely in the gearbox. Did a piston check, cylinder and piston only even, to rule out the head. No change. It becomes very hard to move the piston by hand.

ISSUE #2 : The ball bearings of the piston head are stuck inside the piston. They do NOT move freely AT ALL, so far I have failed to get them out.

ISSUE #3 : I ordered a LONG V3 cylinder head, which doesn't fit, because well, it's too long.
The stock head is a V2 type, so i'm assuming the nozzle is as well.
The long V3 nozzle is the same length as the stock "V2" nozzle.
So far what i've figured out is that I need a V3 SHORT cylinder head and a LONG V3 nozzle. Does that make any sense?

OLD ISSUES (SOLVED)
Hey gang.
I bought this CM048S almost brand new. I don't know what the stock spring is in there, all I know is it shoots around 450fps, so, way too hot.
I can confirm that with a fully charged 8.4V 3A1200MaH battery, the stock spring fired perfectly. No complaints there.

I bought a SP110 to bring my FPS down, installed it (I will spare you my hate story with V3's), and as I cycled, (with the same fully charged battery), it cycled to 95%, and didn't move an inch more.

So the spring is compressed, maybe a couple gear teeth away from releasing, and the motor wants to push, but the gears are locked up, making this clicking noise when i pull the trigger.
The battery also gets very hot. The wires do not.
Removing the motor, I try manually turning the gear, they are hard to turn, and as I almost complete the cycle, something blocks me.

The only way to reset the cycle is to pull on the anti-reversal latch.

I've read a bit on the issue, some say you need a better motor, some a better battery, or the spring is the issue. Considering the stock spring is supposed to be stronger, I doubt any of these are the issue here.

I re-did the shimming and the greasing, and there were no grinding noises, no snags, and just enough room for the gears to move.
There's also this annoying CLICK CLICK noise when I go to pull the trigger allllll the way. A spring? Doubt it has anything to do with this.

I CAN DO VIDEOS! If that helps.

TL;DR : Gearbox wont cycle fully, gears jam. Halp.

July 22nd, 2015, 04:57	#1
Xedilian Trader rating Join Date: Feb 2011 Location: The 450	[CM048S] Piston head bearings stuck, piston not travelling, cylinder head/nozzle questions (Spring issue fixed) NEW ISSUES HERE ISSUE #1 : The 7 tooth SHS piston I ordered and the SHS piston head don't slide freely in the gearbox. Did a piston check, cylinder and piston only even, to rule out the head. No change. It becomes very hard to move the piston by hand. ISSUE #2 : The ball bearings of the piston head are stuck inside the piston. They do NOT move freely AT ALL, so far I have failed to get them out. ISSUE #3 : I ordered a LONG V3 cylinder head, which doesn't fit, because well, it's too long. The stock head is a V2 type, so i'm assuming the nozzle is as well. The long V3 nozzle is the same length as the stock "V2" nozzle. So far what i've figured out is that I need a V3 SHORT cylinder head and a LONG V3 nozzle. Does that make any sense? OLD ISSUES (SOLVED) Hey gang. I bought this CM048S almost brand new. I don't know what the stock spring is in there, all I know is it shoots around 450fps, so, way too hot. I can confirm that with a fully charged 8.4V 3A1200MaH battery, the stock spring fired perfectly. No complaints there. I bought a SP110 to bring my FPS down, installed it (I will spare you my hate story with V3's), and as I cycled, (with the same fully charged battery), it cycled to 95%, and didn't move an inch more. So the spring is compressed, maybe a couple gear teeth away from releasing, and the motor wants to push, but the gears are locked up, making this clicking noise when i pull the trigger. The battery also gets very hot. The wires do not. Removing the motor, I try manually turning the gear, they are hard to turn, and as I almost complete the cycle, something blocks me. The only way to reset the cycle is to pull on the anti-reversal latch. I've read a bit on the issue, some say you need a better motor, some a better battery, or the spring is the issue. Considering the stock spring is supposed to be stronger, I doubt any of these are the issue here. I re-did the shimming and the greasing, and there were no grinding noises, no snags, and just enough room for the gears to move. There's also this annoying CLICK CLICK noise when I go to pull the trigger allllll the way. A spring? Doubt it has anything to do with this. I CAN DO VIDEOS! If that helps. TL;DR : Gearbox wont cycle fully, gears jam. Halp. __________________ GIT GUD OR STAY PLEB Last edited by Xedilian; July 30th, 2015 at 14:59..