question over new motor

[brandon174]

i know this is going to sound silly but i have just charged a pack of batterys up(6 cell 3300) and checked volts which were 8.6 but new motors state 7.2 now i know the older ones were about 12v rated could this be the problem i having with them as chris said mine have shorted out and i have now just about done 3 motors ???????????

[Simmo]

Yeah, but I expect that is peak voltage, when running under load in the vehicle, the voltage will be lower?? I would be very suprised if a motor would short out at such low voltages. it would depend on the current (Amps) at the time of shorting.
If you take a whack and the cells short out, the weakest - or smallest point (windings) Could take the full brunt of the cells capacity?

Especially if you where running a manual speedo..

[brandon174]

forget what i said :D as they will take upto 12v with them also being fitted in vacuum cleaners and cordless power tools etc so i take it that it only says 7.2 due to thats the biggest batterys we use unless they have been down rated some how but mabuchi`s web site says they will operate between 4.5v and 12v
so voltage going into them being more then 7.2 may not be the problem with the ones i have had

[Stox216]

It might just be a conspiricy to get us Stockcar racers onto 4 cell racing.

Unless we sort this out very quickly the 1/12 stockcar nationals are going to die this year, we already have people staying away from the second national meeting at Wycombe because of the motor issue, I can only see this getting worse at this present time, I for one will not be purchasing another of these duff motors! Compared to the aero-naut motors that we use in Holland the new Mabuchi are very second rate! We need to act now to save the nationals!

[brandon174]

agree and the world`s not just the national`s mate they not going to come over if they got to buy couple of motors to last the meeting:D in fact how many english boys will do it if they got to buy couple of motors


i going to see if i can get a drill from b+q with one of these motors in to put in my stock:p

[Stox216]

See if you can get a job lot and make a bit of money selling them.

For the worlds meeting I suggest we ask our collegues in Holland to bring over a batch of Aero-naut's so we can all use them for the big meeting, no lottery with the motors then.

[mardavehq]

Come on guys you realy need to be carefull what you are saying before you start a full scale panic. we have had 4 motors from 200 and Brandon i have replaced yours foc. I have today recd the Production bach and Brandon yours are on the way. please keep me posted. before you start a full scale panic. You and one other are the only people that have had a problem !! iam not saying your wrong but let keep our feet n the ground as this motor is the same as the old one .
Chris
can i have all e-mails with there concernes direct to me please mardaveracing@aol.com
Chris

[Matthew413]

Would be interested to know out of those 200 how many have gone in Stockcars. I know at Rugby we don't have any motors for sale, new or old.

[brandon174]

i know you have replaced mine mate and you are doing all you can

i will put my trust in you and once i have tried the new batch out i think we will be ok i still think that the first 200 were made in a rush to get us out the shit and were not made with full care and attention

so lets not all panic yes we have had problems with these motors but as chris has stated they are built to order and i still think that to get us 200 so fast they might have been bashed together so as to get them to us.

[dp racing]

just my two peneth worth but mabuchi are a masive company and im sure they didnt just produce 200 motors to send to mardave i belive thats all they could spare at the time with there current other orders they had to meet when you consider how widely used these motors are used in the drill and hoover industry they wouldnt make a special rushed batch of just 200 it just a case of this motor is new and there for if any thing goes wrong lets jump on it! i my self had a brand new old motor lose its magnet strengh after just 2 runs but wiv mass production on a cheap sealed motor it happens now and again i dont see that we have any more of a problem than we did before but in fairness to you stock car boys i havent tryed 1 with 6 cells but like i say this is just how i see it:)

[Stox216]

Chris, there are more than two that are unhappy, it is just that ther are only tow of us that will stand up and be counted, the others are like chinese whispers too scared to come out in the open with their thoughts.

[Simmo]

Again, its just 6 cell stockcars.

[mattbrown322]

Hi All,

Our Nick (Nick Brown from Urmston) tried one of the new ones and it has capitulated after 2 meetings (I.E. there is tonnes of lateral movement when you pull the pinion!!!! Normally this wouldn't start to happen for at least 30 runs in my case!!!

Never taken one apart but maybe the bushes and/or spacers are different from the previous ones or from a bad batch. I've got a new one but will be sticking with my old one for wycombe!!!

Matt Brown 155 (Urmston)

[brandon174]

hi simmo

yea we know its just six cell thats having this problem there is not a problem if you are running 4 cells ie bangers,hot-rods,saloons we all know its just us stock boys that seem to have a problem with them but hopefully now the main batch here they might not be a problem so lets just wait and see how it goes on sunday

[redleader]

HELLO ALL:)

Attached is a full report on the motors tha have been sripped and inspected by Paul Worsley from the BRCA Electric Board.

As you can see there is no major difference in the motors:confused:


AS THIS MATTER IS CAUSING GREAT CONCERN CAN WE HAVE THE ACTUAL NUMBERS OF MOTORS THAT ARE FAULTY !Also can anyone tell me how many old motors were blown last season, I remember quite a few!!!!!!!


Full report attached.

I have checked magnet position and com. position on all three motors now.
The wire on the latest motor is slightly thicker. It seemed quite soft and the tags broke away from the com very easily.
I also checked the resistance between com. segment and wire. All three segments read zero ohms, but this is only a guide as a heavy current load may result in the contact not being good enough.

To be honest, I cannot see any major difference between all three motors, except the Brushes on the latest version.

All the best,

Paul.

[brandon174]

as in motors blown last season yes i had a few am not going to say i dint i even had ONE that only lasted a meeting but now i have had 3 in a row and the most i can get is a meeting from it no sorry the second one lasted for five heats so a meeting plus a heat of the second. i still say and hope that now the main batch is here the problem might vanish and we can get on with racing and not have to worry over if motor is going to hold out

[Simmo]

Would be interesting to see if the 6 cell salloon stox suffer with the same problem?

[Sam Gray]

Would be interesting to see if the 6 cell salloon stox suffer with the same problem?

It does, i think team tom found a problem and steeley and rophly defientaly found a problem:eek:

[try again]

yep one or two at the moment i think thats mine had it in a 4 cell saloon what done a meeting very slow then tryed 6 cells in it then we had smoke coming out and not a lot of drive going to give it to chris at one of the nats .

[ascarman]

Mine lasted a bit of pratice and half a heat. And no i dont want another i will not be traveling a 100+ miles to Nationals with these motors, last year i had no problems the year before i done 2 (that was on 4cell and overgeared).
Yes they seem to be a problem on 6 cell but we have not just changed to 6 we have been on 6 for years. Pehaps this year wining will not be about how many laps you get, it will be making a motor last a whole meeting.:D

moan over ;
4cell stock cars what a waste of time paint and drying come's to mind

[try again]

ok there are some of us not happy about the new motors so it would be nice to hear from anyone what has had no problems on 6 cell cars if there is any ? out there and what type of cars are they.

Just one other thing are the new batch of motors that you got Chris the same or are they diffrent ? in any way ,thanks .

[StreetScreamer]

dhuh.. it smells like using an old T-Ford engine for Formula One 2007 Season!
Everything around the concept of electric stockcar changed / improved, but rulez-ah-rulez.... the motor stays the same. Moral: keep costs down.:eek: However we now see a significant drop in racing pleasure and increase in costs as some racers need e new motor every race. The fact we want to stay a class which is accessible for anyone, also with small pocket, should not close our eyes for progress, otherwise we all still would walk around in bear skins and scream undefined noises..... Time to open eyes and think. Think about rebuildables (or at least allowe someone to test them) and see if the better conductivity of the brushes in their holders will help, aside the better possibilities to do maintenance. Go with the winds of change!
Think about good homologations of motors / parts and big sanctions like one year ban or something like that.!!! :mad:

[mardavehq]

Wow that sounds so serious. i will be at this weekends national with the production batch of motor and my support for all that need it. we will sort this small issue out if we work together. heads up or we will all loose out in the long run
Chris

[ascarman]

With the production batch ??

[brandon174]

is this "production batch " not the same as the 200 we have had ???????

[mattbrown322]

Ok, Cheers Chris,

I''l be hoping to swap my un-used pre batch for a production batch if thats OK??

Matt Brown (Stock Car 155)

[ascarman]

I now have the new new motor and an old new motor,:confused:
the new one has on it rs540sh-7025 madein china td037307 and has no epoxy in it for balance.

The new old one reads rs540sh-7025 e07028 7.2v and has epoxy balance in it.
So now will this new new one have to go to electric board for checking ?

[redleader]

I now have the new new motor and an old new motor,:confused:
the new one has on it rs540sh-7025 madein china td037307 and has no epoxy in it for balance.

The new old one reads rs540sh-7025 e07028 7.2v and has epoxy balance in it.
So now will this new new one have to go to electric board for checking ?

I think this might be that chris was fobbed off with an initial 200 motors which were not up to spec.
The new motors now have markings similar to that of the old motors, so ( fingers crossed) could this mean the problem is now over:confused:

[Ozzy 39]

This is certainly a problem at this current time but I am sure Chris and the comittee have the solutions hopefully. What we don't want is people leaving the formulas we all love and I was disapointed to read that people are not going to Wycombe because of this problem.

Hopefully maybe something may be said at Wycombe on Sunday to array fears of problems and maybe something sent on an email to all members regarding the matter.

Unfortunately I am not at Wycombe myself due to work commitments but would have loved to raced on Sunday.

Regards

Gary

[brandon174]

well i did say all along its just these 200 motors we had sent:D :p :D

fingers legs arms and what ever else i can are now crossed so once i have new new motors "bring it on"

seems like martin might be right and we been fobbed off

chris gets biggest sigh of the year award(and flops into his soft arm chair):)

[scampo]

as known as a bit of a crasher and disher out of many full length head on's i havent had any problems with the new motors. in fact i think i wrecked more of the old style. my greatest moment was burning out 3 in an evening last year :eek: :eek:


Dont panic , we get duff stuff now and then :D

[Stox216]

We need to test out these motors, and we have a golden opportunity to do so on Sunday, I suggest we have a control motor for Sunday, if Chris can bring with him enough motors so that we all can put one in our Stockcars and Bangers, by the end of the day we should have enough feedback on the new batch!
Who else thinks this might be a good idea.

[Matthew413]

I have no intention of paying out £9 for a still potentially duff motor just to test it.

[brandon174]

i will run one of the prodution motors in my stock dont think we need to worry about them in the banger at the moment as 4 cells seem to be ok
i have done 3 of the old new motors so i will happly run a new new motor if i can make that last we should be ok:D

[Team Tom]

So does this mean we could be on a breakthrough?

Am i reading clearly that the 200 motors that came in had a slightly different part/model number to the motors we "used" to use.

I'm just trying to confirm what i have interpreted from this thread is correct, cheers Tom

[brandon174]

not 100% sure tom but it starting to look like chris was conned with not correct motors to get the 200 he was promised to get us out the crap

thats the way it looks to me but untill the new new ones are ran and tested we really wont know for 100%

[Team Tom]

ok lol:D just making sure i understood what had been said. Lets just hope they were the wrong motors because if not my cells are gone:o Cars was awesome fast one week then stuck new motor in and it was like filling the pertol tank in a car with oil. Just seemed really bogged down and slow. Lets hope these new motors are what we want

[scampo]

so all this winging about motors , what happened at wrcc ???

[brandon174]

it went ok apart from a motor going up in smoke after heat and half

but that was one of the 200 batch, i ran a new prodution batch motor with no problems as you would have read on the brca forum if you go on there:D

[curtreid1]

wat motor are you running

[brandon174]

the B.R.C.A. legal 540rs