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Home » Accessories & Parts » Internal Parts » Gearbox » M4 / M16 Series » Reviews
Matrix Lipoly Ready 8mm Complete Gearebox Set for M4 / M16 series Airsoft AEG (Tornado Speed) - Wiring to the Back
by Dusty T. Date Added: May 24, 2010
Pros: - Gear box was very pretty and smelled like new sneakers =)
- Operated perfectly after some modding to get all wires in place and where they needed to

Cons: - I had to extend the red wire to reach motor contact in my Echo1 m16. Both wires are the
same size coming out of the handgrip mount.
- Had to make a fuse line/extension for battery contact in stock because connection for
gearbox comes out the back about 1 inch.
- FINAL MOST PRESSING CON - Make sure the connector on gearbox is in the right polarity.
I made my fuse line/extesion for battery connection in the same polarity as the battery
wires/connectors (which i think would be standard wiring for these) thinking the gearbox
wiring would be in the same consistancy. Plugged in my battery and the motor was trying
to go in reverse. Thankfully the parts in this gearbox are pretty strong as the anti reversal
latch prevented the gearbox from getting damaged due to the gearboxes wiring. I pushed
the pins out of the connector on the gearbox and reinserted them in correct polarities. All is

Final Notes: Make sure you know what your doing before buying this gearbox. Check polarities, you may need to extend out some connections to make it work but all in all i think this gearbox is sweet, but maybe a little expensive considering all the issues I ran into to make it work in my echo1 m16 that they state you should be able to drop in and start using right away.

on another note: before i found out the gearbox wires were reversed...went to the manufacturer of the gearbox, who was stamped on the box i recieved and they have an interesting note about some of their product being made by another company without their consent. you may want to look at prior to buying. Manufactured by AIMTOP

Rating: 4 of 5 Stars! [4 of 5 Stars!]
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