mikky32

I have just heard from a club member that has also the GM that he hath the same problem. He reseted it several time and changed the sensor wire.

He has already a new sensor wire but we will try to reset it tomorrow again.

thanks for the help.
I let him try an other sensor wire.
I will let you now if it worked.

Martin Hofer

read the stock how-to and try to set it up like that

mikky32

Problem solved.
It was his motor.
Thanks for your help. Everything is running fine again.

chris_dono

Hi all,
I have been running a 6.5 star wind with mode 8 copied over mode 3 for a while now, but this weekend I had issues with 'cogging'... sometimes it would be fine, but other times I'd need someone to push the car to get it rolling.

I factory reset the controller and tried 3 different sensor cables. It was better when running without a sensor cable sometimes.

I have two motors (both star 6.5) and this has only happened to one of them.

Any ideas on what I can check ?

When I copy 8 over 3, the only thing I change is the initial brake (put it to 40 instead of 20)

The one that has this 'cogging' problem gets hotter than the other one, and I found that I couldn't gear them the same on the same track (same car)

I had an FDR of 6.2 on the other one, but couldn't go much below 7.3 with this one. (temps 80c-85c)

Any suggestions welcome.

Martin Hofer

sensors broken

jasonb

Chris,
You can get replacement sensor boards, check the Graupner site for the part No.
Also check the solder joints between the socket and the board go over them with a small iron it might fix the problem these are know to go occasionally.

Jason

chris_dono

That's a bit disappointing as it was a brand new motor (first run was Saturday and it did it from the start)

I might have a sensor sitting around somewhere at home...

thanks for the info guys

jonny123

Hi martin, the sticker on my 120 is all pealing . Will i void the warrenty if i peal it off? Can you get new stickers?

Also i have the found the removable reciever wires a little weak. Especially the short black one. Its really stiff and the wires snap where it goes into the esc. Ive ordered a standard one so ill see how that goes.

Also, does the aluminium case cause interference if too close to the reciever?

Thanks in advance.

-Jonny

jasonb

In that case it might be that the sensors are too far away from the rotor. Check the rotor is centered properly and you might need to shim the sensor board froward slightly (0.5-1mm on the 3 short screws) if the rotor is sitting close to the pinion end.

Jason

chris_dono

I did try shimming the rotor slightly towards the sensor on the day, but that didn't solve it

blue247carz

Hey Chris what is the motor that you are having probs with?

I have probs running the X12's with GM speedo due to the amount of advanced timing already in the motors, they occasionally cog if I don't set the soft start high enough and they overheat even when undergeared.

Paul Pinkney

chris_dono

Hey Paul, it was a GM 6.5 but i hadn't shimmed it correctly. I re-did it this weekend after Mr Kerswell showed me how to do it properly and it was ok after that

MattW

Chris - Not sure i'd admit to that one!!!

chris_dono

hehe, i've still got loads to learn

Martin Hofer

no you won't void warrianty .. just rip it off (it'S the first thing to do anyway :-P)

I never experienced interference caused by the speedo...

well I tried the X12 once ... and yes it get's hot but it's designed to do so ... lrp drivers always use it with around 90 - 110° after 5 minutes ...

but if you don'T have to use the X12 why should you :-P