Quick release gearbox

[straffham]

Would be better if they made the front screw off somehow, the amount of disassembly required to get to the back of the gearbox is far from "quick".

Click to shrink...

My Ares M4 is front wired so changing springs in the original and the ZCI gearbox is easy - unscrew the stock tube nut then the stock tube unscrews out of the lower receiver, then remove the spring guide,its just a quarter turn with an allan key. Spring pops out, put new one in and reassemble. Job done. Same principle with stock tubes which are held on by a long bolt through the stock tube, just remove the bolt and pull the stock tube off then out with the spring guide. MUCH MUCH easier than removing the gearbox from the lower receiver, especially if you want to try different springs to achieve optimum fps.

 

[Unrustle_Thine_Jimmies]

TM recoil shocks are a massive improvement over old TM internals. The EG1000 is a very good motor,the armatures on these things are fantastic and top choices for insane power frankentorques,they're one of the better stock motors about.

The gears are sintered but the sintering is good and the steel is a good alloy- The main concern is the zinc sector gear,but it should not get chewed up by the spur unless you are running an m120 or over. Still not happy TM decided to go zinc on this but no mention of failures stock or under M120 springs.

The piston is very strong and should not strip unless you cause the recoil system to miss-time or really fuck up AOE. Since it's a high stress part I'd recommend correcting AOE to a perfect 90 degrees to eliminate any chance of failing,but the stock AOE is surprisingly decent on recoils,not amazing by any means,Lonex stock guns have better for example but it's better than nothing.

Just remember along with an M90 spring these gearboxes are also pulling back a 200-250g recoil weight along with a spring,so they have to be strong to be reliable stock(Which they are,unless,as said before you miss time the recoil by using an 11.1v lipo or somesuch)