Brushes how long

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Brushes how long

Post  BIGBOY on Mon Feb 11, 2013 9:07 am

Question for Troy I'm running a tamiya super stock rz in my honcho and in the drifter the honcho runs 3s and the drifter runs 2s . How long should the brushes last .
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Re: Brushes how long

Post  WIDELOAD on Wed Feb 13, 2013 4:41 am

There's no hard and fast answer to that unfortunately. You could see 2 packs or 200... Comes down to the exact brush, if you use lot of reverse/brakes with advanced timing and a whole heap of other factors.

Easiest thing to do it pull them out every 5 or so packs and check them. If they are down around the 7mm long mark replace them.
Don't wait until its only the shunt left like a few people on here have...
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Re: Brushes how long

Post  BIGBOY on Wed Feb 13, 2013 6:27 am

Thanks mate that's exactly what's happening drift car lasted 3 packs and the honcho prob 20 of the 3s I read that the tamiya motors are crap are the venom ones any better ?
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Re: Brushes how long

Post  WIDELOAD on Thu Feb 14, 2013 1:25 am

That would be a big negative... Venom motors are crap with a Capital S. There is nothing wrong with the tamiya's in theory. Its just they are designed to a budget (still a bigger budget than Venom's crap).
The biggest single issue is they tend to run fixed advanced timing, which is a bad thing if you have them in a rig that they have to backwards. The retarded timing they now will be running destroys brushes and comms real quick.

Another thing is when you replaces the brushes you should have the comm cut at the same time. Otherwise the new brushes will wear out quicker and destroy the comm by making it out of round.

If you want a decent motor for cheap(ish) have a look at the machine wound Tekin HD or Novak (bleugh!). Even better choice would be a Br00d or Holmes Hobbies.

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Re: Brushes how long

Post  REDNUT on Thu Feb 14, 2013 10:07 am

i just ordered a holmes for my scx10, 45t machine wound, i think it was around 50 delivered,


i smoked my hpi 35t last week running 3s, but i must admit i had cooked it a few times, and my gearing wasnt really right

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Re: Brushes how long

Post  BIGBOY on Thu Feb 14, 2013 12:34 pm

Dam I ordered two of the venom fireballs 21t and 15t double wound there for the drifter .
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Re: Brushes how long

Post  WIDELOAD on Fri Feb 15, 2013 6:41 am

Yeah the venom motor's are called fireballs rather aptly.... Run em if you bought em, but just don't expect awesome performance or long life.

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Re: Brushes how long

Post  BIGBOY on Fri Feb 15, 2013 1:22 pm

Thanks Troy
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Re: Brushes how long

Post  BIGBOY on Tue Feb 26, 2013 1:55 am

Ok got the venom motors and yes no grunt at all so I bought replacement brushes for the rz . I have stripped the motor down and cleaned up everything with wet and dry fitted the new brushes it went god as new for half a pack but stopped again if u give it a little push it goes again but starts loosing power til it stops . I stripped it again cleaned it up re fitted an same thing I have two of these both the same prob but I have not replaced brushes in the other as they are still good .first motor ran forever in my honcho on 3s ( wore brushes out ) but second is in the drifter on 2s and hasn't lasted more than 2-3 packs and still has almost new brushes . I used contact cleaner on both and I've used wet and dry to clean up where the brushes make contact even tried filing the brushes .
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Re: Brushes how long

Post  Big fella on Tue Feb 26, 2013 10:15 am

troy had a play on his lathe with a 55t fireball for me ages ago, on 3s it made it a huge difference better top end and awsome tourqe. that motor still runs just not in use.
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Re: Brushes how long

Post  BIGBOY on Fri Mar 01, 2013 1:52 pm

What do you think I'm doing wrong
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Re: Brushes how long

Post  lunatick on Sun Mar 03, 2013 1:19 pm

BIGBOY wrote:What do you think I'm doing wrong

Time to go a brushless outrunner mate cheers
Thats what all the COOL kids are running Very Happy
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Re: Brushes how long

Post  BIGBOY on Sun Mar 03, 2013 11:55 pm

Put it this way Paul brushless next time problem is I have 4 of these now so I need to fix them .
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Re: Brushes how long

Post  WIDELOAD on Tue Mar 12, 2013 8:11 am

Most likely what's happened is the comm is all flogged and out of round, throw in a lifted/burnt comm plate and you'll get what you're describing.
Getting it cut on a lathe is about the only way it'll come good, and even then it might be too far gone.
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