Always shave down 2nd tooth on piston?

CR0M · March 4th, 2014, 01:26

I usually always shave it down after seeing the AOE, but with my recent build its almost perfect stock.

The question I have is, if the 2nd tooth doesnt look like its a problem at all, do you still shave it down/off just as a precaution?

Like I said, the last couple of builds, I get in there, take it out, cause I could see how it could be a problem eventually, but this one, Im not so sure the tooth will ever get in the way, so Im wondering if taking it off could be bad at all?

lurkingknight · March 4th, 2014, 01:56

I think it depends on the gears and piston rack.. if the sector looks like it might PE with the 2nd tooth, you take a bit off. I took about 1/3 off one on the ZCI 14t piston in a build over the weekend. Other builds like my p90 I took of almost half of it on a CA piston.

The farther you have to push the piston back out of the cylinder to correct AoE I think the more you an expect to take off that tooth.

Styrak · March 4th, 2014, 12:14

On anything I've worked on, I've never taken off piston teeth.

Spike · March 4th, 2014, 12:24

If you're running a non metal piston rack, it'll shave itself down if you don't.

ThunderCactus · March 4th, 2014, 16:09

airsoft guns worked for like 12 years before we started doing that. so no its not required, just recommended

jomor · March 4th, 2014, 20:57

Man you guys are talking a whole different language! What is the full name of the item your talking about? Please. I'm interested in this topic but I'm not sure of the short form word your using, AOE?

K3vX · March 4th, 2014, 21:08

Welcome to the tech world jomor. I'd suggest getting a account at ASM and read like a sponge.

In the meantime, AOE refers at Angle of Engagement. In other words, we change the piston teeth position so they match with the position of the sector gear pickup tooth. Picture the sector gear and piston meshing like this || or like this //.

When we match the tooth profile like that, the piston usually catches the second tooth before the first one, which you can imagine is not a desired behavior. We trim the second, and sometimes the part of the third tooth so they engage properly.

Like so:

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March 4th, 2014, 01:26	#1
CR0M Trader rating Join Date: Nov 2010 Location: Hamilton	Always shave down 2nd tooth on piston? I usually always shave it down after seeing the AOE, but with my recent build its almost perfect stock. The question I have is, if the 2nd tooth doesnt look like its a problem at all, do you still shave it down/off just as a precaution? Like I said, the last couple of builds, I get in there, take it out, cause I could see how it could be a problem eventually, but this one, Im not so sure the tooth will ever get in the way, so Im wondering if taking it off could be bad at all? __________________ WBR

March 4th, 2014, 01:56	#2
lurkingknight "bb bukakke" KING! Trader rating Join Date: Jul 2011 Location: Ottawa	I think it depends on the gears and piston rack.. if the sector looks like it might PE with the 2nd tooth, you take a bit off. I took about 1/3 off one on the ZCI 14t piston in a build over the weekend. Other builds like my p90 I took of almost half of it on a CA piston. The farther you have to push the piston back out of the cylinder to correct AoE I think the more you an expect to take off that tooth. __________________ I futz with V2s, V3s and V6s. I could be wrong... but probably, most likely not, as far as I know.

March 4th, 2014, 12:14	#3
Styrak Trader rating Join Date: Jan 2007 Location: Saskatoon, SK	On anything I've worked on, I've never taken off piston teeth. __________________ Airsoft Sales and Repair/Upgrade Services

March 4th, 2014, 12:24	#4
Spike Privateer Airsoft Trader rating Join Date: Dec 2008 Location: Beaverbank, NS	If you're running a non metal piston rack, it'll shave itself down if you don't. __________________ I change primaries like other people change socks.

March 4th, 2014, 16:09	#5
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	airsoft guns worked for like 12 years before we started doing that. so no its not required, just recommended

March 4th, 2014, 20:57	#6
jomor Trader rating Join Date: Oct 2008 Location: Ottawa	?? Man you guys are talking a whole different language! What is the full name of the item your talking about? Please. I'm interested in this topic but I'm not sure of the short form word your using, AOE?

March 4th, 2014, 21:08	#7
K3vX Trader rating Join Date: May 2012 Location: Quebec City	Welcome to the tech world jomor. I'd suggest getting a account at ASM and read like a sponge. In the meantime, AOE refers at Angle of Engagement. In other words, we change the piston teeth position so they match with the position of the sector gear pickup tooth. Picture the sector gear and piston meshing like this \|\| or like this //. When we match the tooth profile like that, the piston usually catches the second tooth before the first one, which you can imagine is not a desired behavior. We trim the second, and sometimes the part of the third tooth so they engage properly. Like so:

Always shave down 2nd tooth on piston?

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