SOLD!
Anything that helps take the guess work out is a good idea. I take it with motor height tuning you're simply looking for the lowest current draw?
Indeed - well in theory....
Some have said when wild guessing the height just by ear they found there have been 2 "sweet spots" but can't see that, but they noted one sweet spot sounded good but amps was high
The second sweet spot sounded great too but amps quite a bit lower
Maybe a badly suited bevel/pinion was meshing sweet a little too high/low
Should check then pinions and bevel more closely I think - jeez some of them mesh f*cking badly
(my thoughts you should only be guessing stuff like bevel height if you are a Vulcan coz Mr Spock's guesses are $hit hot)
The point is you have a pretty good idea the motor height is correct or nigh on
However which way to do the shimming - you got a pretty good idea that motor height & bevel height is correct
Then 1/4 turn left or right to fine tune it "should" produce a better/worse sound or less shrill
So in theory - which I feel does correlate if the gears are meshing correctly & smoothly
The smooth gears meshing correctly produce less friction & shrill which in turn draws less amps
Less amps or current draw means stuff runs cooler and your battery will last last longer
Plus should be running at its fastest possible speed/rof if there is less friction too
Gun should perhaps last longer I guess though I'm not offering no lifetime guarantee crap
But it "should" just cycle more efficiently in all aspects of the drive chain
(maybe sounds a bit tarty but I think; " Every little helps " as Tesco say)
Whack in a high speed motor over a torque or balanced motor and you really see amps ramp up as well as stuff gets warm
Bad shimming does the same thing too making stuff run hot & fuses blow etc....
I don't think for one sec that amps are everything - but being sure the height is correct to begin with
THEN both sound & amps can help fine tune the tiny tweak on motor plate just a smidge
(young people look at you weirdly when you say the machine/car/gun is talking to you)
If it still sounds & runs crap with high amps then that is the motor angle
(often that can happen when people change M4 grips for a crappy snide ACM grip)
best grips for angles usually end up being the ones that came with the gun
some aftermarket ones can be f*cking dire I have found
Ooops - wall of text again sorry, you know this already, my bad
Ergh yeah lower amps usually goes hand in hand with a sweet bit of shimming - motor height or drive chain
BTW for what it is worth, I am no expert but watching really clever bastids like Rogers helps a lot
TBH - sod going into as seriously deep as he does, I don't fully agree with everything he does
BUT - he really covers everything nigh on and if we can get boxes just half as smooth as his
well I think we have done alright & if on the odd occasion I get near 75% of his smoothness
Well I'm very very happy.
Think only the original James Bond could be smoother....
(soz but I just love this repost)