need4speed

iTrader: (6)

What about the commutator? Is that black too?

Check your finger. That could be the problem. Too much keyboard usage can cause blackening of the commutator.

Possible causes :-

1. QD type driving
2. Wrong Gearing
3. Brake too much
4. Brush not seated
etc.......

KoE

iTrader: (6)

without a pic, i'd guess that the brushes got over-heated...any hotter u'll see rainbow-coloured pattern on them.

i take it that the brush face that is no longer smooth...pitting? too much brush-bounce....from weak/less spring tension most likely.

a good bud once complained that sparks were coming out of his brand new 23T katana. Saw the sparks...nice lil' fireworks tho ...like someone sharpening knife with grinder apparently...he fell asleep during break-in....the poor motor ran for 4 hours!!! Took the comm few serious cuts to remove the grooves

Tpg racer

No its not overheating.....after i truer the comm, its is shiny.....but as soon as I run in the motor at 3V, the comm turns blakish again....I guess its the brushes fault as it is greyish in colour already.......that is why I'm askin how to maintain the brush........

Would I have to change the brushes or is there any way I can clean the brushes.......Btw, the brush is still long and used a few times only....

James khoo

iTrader: (15)

I just cleaning the brush with comm stick,then breakin for 1 minute on 3v.then the motor is good to go

KoE

iTrader: (6)

some ppl use comm stick ...the fibreglass thing to rub/clear comm/brush

i use fussybrush to remove some material from the brushes and re-serrate them back if needed; website ==> http://www.fussybrush.com/

need4speed

iTrader: (6)

TPG Racer,

Will the same thing happen again when you change to a NEW pair of brush?
Are there a lot of sparks when the motor is running?
Did you do anything to the timing lock?
Are your hoods aligned?
Is it on load or free spinning when you run at 3V?

There are just so many possibilities, without a clear description of what you do or did, I dont think any of us can possibly give you the correct answer. Only suggestions. You will have to observe and explain in detail.

Tpg racer

1.Will the same thing happen again when you change to a NEW pair of brush?
Dono....I dont have a new brush to try on......

2.Are there a lot of sparks when the motor is running?
Not much...jz the usual amount of spark a DC motor generates......

3.Did you do anything to the timing lock?
How to do anything with the timing lock.......its illegal for race mah....

4.Are your hoods aligned?
I guess so.......how to check?

5.Is it on load or free spinning when you run at 3V?
Its free spinning.....

dgullickson

iTrader: (45)

If anyone is interested we are clearing out our Inventory of 23t at Super Low Prices:

http://www.axiommotors.com/blueprint...urn-p-255.html

xray racer

iTrader: (22)

Hey,

Which brand of motor are these based from???

Cheers,

Robbie

Geetoo

iTrader: (1)

That gearing is outrageous. May I know how long your straight away is? I am so puzzled on how that could work, do you mean stock brushes will burn on that gearing?

James khoo

iTrader: (15)

My local track straight is about 35m long,you must be very smooth on trigger,and don't play more than 6 minutes,
Yes,i had burn out fews motor for that gear ratio for been heavy on trigger.

Cheers

James khoo

iTrader: (15)

I had try 7 turn single on this track with gear ratio 8.00 with no sign of overheat!

dgullickson

iTrader: (45)

They are based off the Integy can.

xray racer

iTrader: (22)

Hey,

I've got a 23t race coming up in a month or two, can anyone tell me the 23t motor to have at the moment? Atlas, Kawada, Luna, Orion etc???

Which motors are the gun motor at the moment?

The track is a fairly small indoor carpet track, so power/torque is good, but the back straight needs a bit of rpm.

I have an asphalt race coming up later in the year, so any advice on more rpm based motors would be good too.

All help will be appreciated,

Cheers,

Robbie

James khoo

iTrader: (15)

Hi,i think you can use the torque base 23 turn motor,there are 4 type of 23 turn by every brand,Laydown high torque,Laydown high rpm,stand up high torque and stand up high rpm.
Use torque base for small track,and high rpm for open high speed track.

Cheers