Just a quick brushed motor query

[mattJT]

When your brushed motor is on it's way out, will it start running slower or just pack up? (trying to work out why my mini's speed has decreased so much over the past two meets)


Cheers
matt

[Col]

Given it a skim and changed the brushes recently?

[mattJT]

Originally Posted by Col

Given it a skim and changed the brushes recently?

Fortunately I can't clean the brushes (last time tried that busted a motor) as is a sealed can motor (HPI 20t Saturn)

Gonna run some fastrax motor cleaner through it tonight to see if that makes any diff.

Sadly don't have a comm lathe so can't skim the motor either

[Col]

Sealed can saturn's are good motors and you can't skim them (as they're sealed...) Has it done alot of runs? I know some that've run for nearly a year without bother.
Motor cleaner can't do it any harm, I suppose. Just use lots as it'll be hard to get any debris out through either end.
And lube the bearings up after!

[mattJT]

Originally Posted by Col

Sealed can saturn's are good motors and you can't skim them (as they're sealed...) Has it done alot of runs? I know some that've run for nearly a year without bother.
Motor cleaner can't do it any harm, I suppose. Just use lots as it'll be hard to get any debris out through either end.
And lube the bearings up after!

Not really done that many runs, only 3 race days and a practice session.

Passed the motor cleaner through it (still feeling a little high from the fumes ) and alot of grit and general grey looking fluid came out
Carried on spraying till ran clear so hopefully.......

Not really going to know till next race day if it's done the job tho, front rooms not big enough and hallways laminate.

Cheers for replying

[ch!3f]

heres a tip i got off a pro get a jug of warm slightly soapy water and connect a battery direct to the motor what you wana do is submerge the motor fully under the water and hold it there for 3mins rince the motor and then change the water this time with no soap and do it again for 2mins.(saturns have internal fans so do splash alittle)

this is what pros do to wear there 540 motors in but also this cleans most of the crud off the com and brushes.when you have done that dry it off and spray the bushings with some gt85 or wd40 make sure you dont get any inside though.

i also get some cotton buds and wet them and press them agains the com and turn it(works best with a pinion on) to get the rest of the crud off.

this should revive the motor and its even made a few of my 540 motors faster if it doenst then its shot.

[mattJT]

Saw a vid on youtube a while back, some american lad, connecting a regular AA batt to the motor wires and doing just that.

Had heard about this trick, just couldn't get my head around the whole electric product being cleaned in a cup of water....just felt wrong

Having said that, will defo give it a go tomorrow night, be interesting to see what's left inside


Cheers again