servos and motors

[B4 Sloth]

I went racing for the first time on Sunday, really enjoyed it. I raced my factory team B4 and have got the bug. I managed to strip the gears of a metal geared servo- could my servo saver have been too tight?
After 4 5 minute races the car became 'glitchy' on acceleration. a couple of the lads were really helpful and said that it was probably brushes. We took motor apart and it apparantly needs a skim. The car had only seen a bit of action (30 mins or so ) in my cul de sac. PEAK RAVEN SV2 13x2. Are all motors like this, brushes cost a few quid and then a skim? Surely you must to be able to get more than that out of a motor? I am on a budget and in hindsight wish i had gone for brushless..but i didnt, So i need to get round or over this hurdle! Should i have spent more on a better motor? As much as i loved the day it may prove to be an expensive hobby...new baby on the way i dont want this to be the case!!
Thanks all, particularly Braxted MERCC

[ashleyb4]

The original style square brushed laydown/stand up motors do require a skim after a few runs. And the cheaper motors do seem to need skiming more often. Also what gearing have you got it on? As even a tooth or 2 out on gearing can serioulsy effect the life of a motor. My advice would be keep an eye out on ebay or on the forsale section on here and look for a peak/ orion vantage v2 motor or a checkpoint brushed motor. these motors have round brushes and the v2's have angled round brushes this increases comm and brush life.

As for the servo it could well be the servo saver is either tight or needs to be rebuilt.

hope ive help

A

[rocketrob]

Well, the deal is that this hobby - along with ANY other hobby I've had over the years - costs money to participate in.
And honestly, I can't think of a single thing that doesn't come without any inherent costs.

Realistically, running your car (blasting it wide open) around the local streets tends to be way harder on brushes than just racing - so it'd be my advice to save your hot motor for racing and get a cheap stocker for just playing around.

As far as the servo goes, it'd be my guess that you landed a jump with the wheels cranked to one side (usually what does it) - so in the future let go of the wheel after launching a jump, so the wheel are pointed straight on landings, and it'll give you longer servo life.

I know where you're at, gave up the hobby as my own kids grew, so that's just part of the gig you must be prepared for - because parenthood has its cost too.

[col300]

Was it wet? May just have been a bit water in the motor. Does seem a bit quick to need new brushes / skimming.

Have you tried it since?

[B4 Sloth]

Thanx for responses.
In terms of gearing, 13x2 motor on a 21t pinion- undergeared probably. standard kit 81t spur.

It was wet grass, i have not tried motor since though as car is in bits!!!

Can someone explain the brushes. Mine are round with an ngled cut at end...so what area laydown, v ....orientation...gees this is all a bit of a mindfield.

Just want a motor that will last a meeting at least before a skim. My parma cyclone back from the day lasted moons. Didnt seem much slower either!!

Cheers all

[col300]

probably just had a bit of water in it, shouldn't need skimming yet. Just try giving it a spray with some motor cleaner.

[jim76]

you can run brushed motors for a long time without skimming, but the performance will drop and the com will get ruined.
Even with the V2 motors or checkpoint motors it is best to give them a light skim after each meeting as this will keep them in top performance. If you don;t skim them for several meetings the performance will drop and when you come to skim it you will need to take off a very thick layer of copper in order to get a smooth com again.

A lot of racers have lathes and if you ask them nicely will probably skim them up for you for a token gesture fee of say £1 towards the lathe bit. Alternatively if you plan to race regularly then maybe pic up a second hand lathe - they are pretty cheap (£40 ish) as brushless has really knocked the value out of them.

The checkpoint motor is the best of the brushed variety. Very fast, plenty of torque, and the brushes would last for around 50 runs (10 meetings). Try and pick up a second hand one, the 10x2 is very good in 2wd. Don't get a single wind for 2wd though.

[ashleyb4]

a 10 jim if he hasnt driven that much it might not be a wise idea to stick a rocket in his car a 12 would proberly much better in 2wd the only people ive seen run 10's are nutter (not calling you a nutter jim)

A

[Lee]

Originally Posted by ashleyb4

a 10 jim if he hasnt driven that much it might not be a wise idea to stick a rocket in his car a 12 would proberly much better in 2wd the only people ive seen run 10's are nutter (not calling you a nutter jim)

A

I ran a 10x2, its fine if you can control your left thumb

[jim76]

fair point, 10 may be a bit quick for someone relatively new to the hobby.
Even a good checkpoint 19t would be ok in a 2wd, and probably not much slower than the 13t.

[B4 Sloth]

Which model checkpoint,
Anyone provide a link?
5 meetings sounds great, at end of year i will look towards brushless.

Thanks boys

[ashleyb4]

Originally Posted by Lee

I ran a 10x2, its fine if you can control your left thumb

Exsactly only nutter

These are the checkpoint motors

http://www.microtechracing.com//prod...S&cat=MODIFIED

A

[jim76]

the brushes last that long, but they do cost a little more than standard brushes (standard ones only last 6-7 runs anyway)

you will still need to get it skimmed each week to keep it in decent condition. If you don't skim it the brushes will deteriate faster.

[losixxx]

don't agree jim, my spashetts usually do at least 3 meetings between skim and brush, never noticed any change in performance throughout the meetings, the only thing you need to make sure you do is run the new brushes in for about 6 or 7 minutes at 1 volt if possible

[Zedman]

If your ESC supports brushless I would say buy a brushless motor before you spend any more money, even if it dosnt consider switching, will save money in the long run and a lot of hassle and drop off in performance.

NB this advice is based on the blurb saying brushless are maintanance free which from my limited experience and what I have read without any exceptions seems to be true

[Dreadstar]

I don't think that a 10x2 motor is too fast,after all I run an 8x2 Trinity P98,but then again,I'm running on an 1/8th scale track.If I were running indoors or on a tight track,it would be rather scary.

[Mike Hudson]

8x2! that is rather chaotic, i've had a little play with 6, 7 and 8 turn brushed motors and they are absolutely insane in offroad very fun though wouldn't recommend running them on race tracks unless you are on a very big spaceous track like dreadstar has said he races on a 1/8 track and also if you can afford lots of tyres as higher powered motors will shed through them quicker