Post by Beast on Oct 21, 2008 21:32:58 GMT -5
Installation of an Extreme-Fire MOSFET computer
This is the installation of a MOSFET into a rear wired M4 with a standard V2 gearbox. I bought the SW-Evolution model from extreme-fire.com/ It was $75 shipped and came in about 4 business days. They have several other models to choose from depending on your style and budget.
First I began by disassembling the AEG down to its gearbox.
Next I opened the gearbox and removed all the gears, piston, cylinder, and trigger. Then removed the black motor wire coming from the battery leads. Then noting which of the trigger wires went where; I carefully used the soldering gun to remove the wires from the trigger switch assembly. I now had all of the old wiring removed and was ready to begin to lay out the new wiring harness that came with the MOSFET.
Now measuring the trigger switch wires, I cut them to length and stripped the ends to prepare them to be soldered to the switch. Taking my time to make sure I had a good solid joint, I soldered the two leads to the switch in the order shown in the directions. The orange wire went to the lead that was connected to the motor originally, and the red went to the lead that came from the battery in the stock set-up. Next I carefully tucked the wires into their channels around the gearbox shell. I left the motor wires long at this point, choosing to cut them for length once I had the gearbox back together.
Now it was time to fully reassemble the gearbox. If you have never reassembled a gearbox before, you should have never come this far to start with so I’ll leave that to a different tutorial.
I took the time to clean and regrease the gearbox and it's components.
Using the old wires for length, I cut and soldered the supplied motor connectors to the wires. Make sure to use the supplied shrink tubing to cover the connectors to reduce the possibility of shorts.
Now I began to assemble the receiver of the AEG, installing the gearbox, pins, and grip with the motor. I left the battery wires long so that once I had the butt stock mounted I could cut them to the length I wanted.
One problem did arise at this point. Due to the different style of the motor connectors, the wires had to be routed slightly different and required that I trim an ear of the motor butt plate to make clearance.
Reassemble the rest of the AEG and cut the battery wires to length. I opted to use the large style battery connectors, which is what is on my batteries. The MOSFET comes supplied with a small style, so if you use the large style please make sure you have one on hand for the assembly. I also soldered these joints to insure a trouble free operation later. All that was left was to install a battery and go through the start up procedures listed in the instructions. Mine worked fine the first time and required no fiddling with to get it to function properly. Installation took me 1.5 hours start to finish, but I have quite a bit of gearbox rebuilding under my belt and that helps with the reassembly. But if you take your time and work carefully, anyone who can open a gearbox can do this mod.
This is the installation of a MOSFET into a rear wired M4 with a standard V2 gearbox. I bought the SW-Evolution model from extreme-fire.com/ It was $75 shipped and came in about 4 business days. They have several other models to choose from depending on your style and budget.
First I began by disassembling the AEG down to its gearbox.
Next I opened the gearbox and removed all the gears, piston, cylinder, and trigger. Then removed the black motor wire coming from the battery leads. Then noting which of the trigger wires went where; I carefully used the soldering gun to remove the wires from the trigger switch assembly. I now had all of the old wiring removed and was ready to begin to lay out the new wiring harness that came with the MOSFET.
Now measuring the trigger switch wires, I cut them to length and stripped the ends to prepare them to be soldered to the switch. Taking my time to make sure I had a good solid joint, I soldered the two leads to the switch in the order shown in the directions. The orange wire went to the lead that was connected to the motor originally, and the red went to the lead that came from the battery in the stock set-up. Next I carefully tucked the wires into their channels around the gearbox shell. I left the motor wires long at this point, choosing to cut them for length once I had the gearbox back together.
Now it was time to fully reassemble the gearbox. If you have never reassembled a gearbox before, you should have never come this far to start with so I’ll leave that to a different tutorial.
I took the time to clean and regrease the gearbox and it's components.
Using the old wires for length, I cut and soldered the supplied motor connectors to the wires. Make sure to use the supplied shrink tubing to cover the connectors to reduce the possibility of shorts.
Now I began to assemble the receiver of the AEG, installing the gearbox, pins, and grip with the motor. I left the battery wires long so that once I had the butt stock mounted I could cut them to the length I wanted.
One problem did arise at this point. Due to the different style of the motor connectors, the wires had to be routed slightly different and required that I trim an ear of the motor butt plate to make clearance.
Reassemble the rest of the AEG and cut the battery wires to length. I opted to use the large style battery connectors, which is what is on my batteries. The MOSFET comes supplied with a small style, so if you use the large style please make sure you have one on hand for the assembly. I also soldered these joints to insure a trouble free operation later. All that was left was to install a battery and go through the start up procedures listed in the instructions. Mine worked fine the first time and required no fiddling with to get it to function properly. Installation took me 1.5 hours start to finish, but I have quite a bit of gearbox rebuilding under my belt and that helps with the reassembly. But if you take your time and work carefully, anyone who can open a gearbox can do this mod.