Probotector Posted June 19, 2013 Report Share Posted June 19, 2013 I'm currently upgrading my Umarex/S&T SL9, replacing most of the stuff, including a different gearset (SHS 13:1). However I noticed that the SHS sector gear doesn't fit. Problem is that the diameter is slightly larger, causing the gear to push the piston up which will cause stress on both parts. It would be good to know which aftermarket parts (13:1 gearset and piston) actually work together in an ARES/S&T gearbox. I assume S&T gears have the same ratio as ARES (18.7:1 according to online stores), but their gearsets are quite expensive. Link to post Share on other sites
aznriptide859 Posted June 20, 2013 Report Share Posted June 20, 2013 Try a different piston, perhaps the piston is proprietary? Link to post Share on other sites
hawaiianjuggernaut Posted June 20, 2013 Report Share Posted June 20, 2013 Haha. Want to hear a tech joke? Ares and S&T Joke of the airsoft technician's world. I haven't heard of the GEARS being proprietary before, but SHS gears tend to fit in more guns than say, Guarder or Marui stock sets. Echoing riptide, try a new piston possibly? Link to post Share on other sites
Probotector Posted June 20, 2013 Author Report Share Posted June 20, 2013 Hm, I guess. Current piston is an A2A piston. Wonder what piston could work though. Link to post Share on other sites
Horsem4n Posted June 20, 2013 Report Share Posted June 20, 2013 try one without so much reinforcement, like a CA yellow piston. the nylon teeth may just be too tall. does the sector gear touch all the piston teeth or just the pick up tooth? also, check to see if the piston can move back and forth in the tracks with the gearbox closed (without the gears). some ARES designed gearbox shells have issues with pistons with reinforced teeth. Link to post Share on other sites
Baddbaz Posted June 20, 2013 Report Share Posted June 20, 2013 Type zero piston if I recall correctly / ares /S&t usual fit Link to post Share on other sites
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