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LUTNIT · February 4th, 2009, 07:19

I had that exact thing happen with a STAR L85A2 AFV I had. It wasn't a stock piston and I have no idea what brand it was but thats what happened, almost new piston too.

I did a highspeed gun once and it had a really weird grinding sound, very different from any gear grinding I heard before or since. Turns out the sector gear was eating the MIDDLE teeth of the piston because the return stroke of the piston was too slow. Was the weirdest thing to see what I removed it from the mechbox. Another strange one was a piston eaten from the piston head end backwards. Turns out I misinstalled the piston head so there was an extra sector gear tooth after all the piston teeth had been engaged. Result was the last gear tooth was beating up the metal piston tooth until it broke, then the last 2 gear teeth where beating up the second last piston tooth, etc. Got a third of the way through the piston within 10-15 shots.

Back on topic....my main advice is:

Modify, in my experience, make horrible: gears and pistons

Modify is great for: everything else (I especially love their cylinders and cylinder heads)

February 4th, 2009, 07:19	#35
LUTNIT Trader rating Join Date: Dec 2005 Location: Ottawa	I had that exact thing happen with a STAR L85A2 AFV I had. It wasn't a stock piston and I have no idea what brand it was but thats what happened, almost new piston too. I did a highspeed gun once and it had a really weird grinding sound, very different from any gear grinding I heard before or since. Turns out the sector gear was eating the MIDDLE teeth of the piston because the return stroke of the piston was too slow. Was the weirdest thing to see what I removed it from the mechbox. Another strange one was a piston eaten from the piston head end backwards. Turns out I misinstalled the piston head so there was an extra sector gear tooth after all the piston teeth had been engaged. Result was the last gear tooth was beating up the metal piston tooth until it broke, then the last 2 gear teeth where beating up the second last piston tooth, etc. Got a third of the way through the piston within 10-15 shots. Back on topic....my main advice is: Modify, in my experience, make horrible: gears and pistons Modify is great for: everything else (I especially love their cylinders and cylinder heads)