HS SSG build advice

[The_Jelly]

I haven't done that, as I read many posts that stated its not necessary. I will however remove 2 teeth this weekend. Suppose it will aid a tiny bit with weight reduction. Once I have tested the boost motor. (maybe tonight if I get a gap) I'll post my results 

 

[AK47frizzle]

I think you've way overcomplicated your build. You don't need to swiss cheese or do anything special for ssg builds 30 rps or under.

Just: aoe correction, 13:1 gears, 22 tpa motor, and an 11.1v does the trick. I'm running an m100 spring here with no pme at all. But, i'm also using an all-plastic piston. Good plastic pistons are a lot stronger than you think. I have another build at 35 rps with an 11.1v and m100 spring with no pme with an shs 14t.

Do you have any video tests? You prolly stripped gears due to shimming issues.

 

[The_Jelly]

43 minutes ago, AK47frizzle said:

I think you've way overcomplicated your build. You don't need to swiss cheese or do anything special for ssg builds 30 rps or under.

@AK47frizzle thank your for your input!

It's my first ever attempt at a moderate speed SSG build and I guess i'v over read forum posts and have got myself confused on what I think is right. @Davegolf has given me some awesome advise so far and it's been so welcoming in the process as every build I read up on had been so different and contridictory.

The stripped gears may well be shimming issues, however I did notice some silver wear on the length of the teeth of the piston which lead me to believe it was PME. I'm shimming bevel to pinion method. 

I thought that going with a 22TPA motor would yeild very similar results to an 18:1 with 16TPA motor however it would have had better trigger response. Similar I mean around the 23-25RPS range with an m110/m120 spring. 

That's why I went with the higher TPA motor and short stroked. Your 35RPS build with the 14t and m100 spring. Did u have to short stroke due to the missing tooth on the piston? Very nice build BTW. 

 

[The_Jelly]

@Davegolf and @AK47frizzle quick update.

I took off the teeth as you suggested. And I reshimmed as AK suggested and put the m120 spring back in the gun and chrono'd. I got 305FPS on original barrel and was happy with that. I did a ROF test and got 26RPS which I'm still a bit bleak about. 

Good thing is the gun is now running with the m120 and I'm super stoked. I do have a random double fire in semi auto every 5-8th shot which I never had. I enabled precock on the perun mosfet and this resolved the overspin in semi. 

Now last question as I'm now happy with where I'm at with the build, I just wish my ROF was slightly higher. Is there anything I can do?