tuning motors?

[mx0range]

i remember years ago (10+ yrs) i took my humble little ta-01 (i think) into my local model shop to get some xtra speed on the cheap.

the guy that worked there at the time stuck a new motor in for me.. cut it short, it wasnt quite fast enough for me so, iirc.. he loosend a screw or 2 and twisted the motor round increasing the revs..


how do i do this?! it did have terrible lag.. then kicked in like a turbo and shot off.. drained the batts in 2 mins

[MiCk B.]

He advanced the timing on the motor. Where the brushes are relative to the magnets. It gave the motor more RPM, which it got by drawing more current.

So it went quicker, but didn't last as long on each battery

MiCk B. :-)

[mx0range]

well i have better batts than back then, and not the standard mechanical speed controller.. lol

so how is it done & can it be done to any motor?

[LEGEND]

Well pretty much any rebuildable brushed motor that allows the endbell to be turned once the screws have been slackened. To do it loosen the screws a little and turn the endbell a little to either direction then check the speed, if it has become slower then turn it the other way. One way gives more RPM but less torque and vice versa.

[mx0range]

ooo.. groovy. i shall experiment!

[sparrow.2]

Don't expirement too much though because more timing will cause more heat and more comm and brush wear.

[Jonny_H]

It seems that timing and gearing do more or less the same thing - so you can run taller gearing with less timing, or shorter gearing with more.

Too much of both is a quick way to a purple comm, though!