If:
-You change motors
-You change motor plates
-You change grips
-You have a replica with an alan set screw height adjustment (think Marui Mp5) and it backs out
-Someone messes with your adjustment
-Etc
…Then you may have to re-adjust your motor height.
First let’s talk about what will happen if your motor ISN’T adjusted correctly.
If you motor is adjusted…
Too High: Your motor can scrape on the bevel gear. It’ll sound like the voice of Satan, will wear out your parts, and drain your battery.
Too Low: Your motor gear won’t fully contact the bevel gear and the gears will wear unevenly. Eventually one (usually the motor pinion gear) will wear enough that it stops contacting and your gun will make a crazy whirring sound without shooting.
Actually adjusting it to the correct height is a matter of about 4 revolutions of the screw.
Screw the adjustment in until you feel the resistance increase. Fire the replica in semi auto. It’ll probably sound like the voice of Satan I was telling you about. That’s the upper limit for your motor height.
Now turn the screw out a revolution. Fire it again. It should sound less satanic. If it still sounds like there is extra resistance, turn it out more, test firing every quarter revolution. Stop screwing it out when the amount of resistance you hear stops being less when you turn.
If your replica screams for other reasons like tight shimming, be wary of this and try to “feel” the amount of resistance when you do your test shots. Stop backing out the screw when the amount of resistance you feel doesn’t decrease with further turning.
Use removable loctite on your adjustment screw to fix it in place.
Figure 1: How the pinion gear and the bevel gear interact. Not the small amount of movement between good adjustment and bad.
Figure 2: How the motor sits in the gearbox.
Figure 3: An example of the adjustment set screw, 1.5mm alan.
0 comments:
Post a Comment