why am i burning up motors??

[madkawi650]

Cool thanks..
I was thinking it all sounded too complicated and make more sense to flip the diffs the right way for ccw rotation. My tx has the throttle set to reverse and that doesn't seem right to me either.. I'm gonna switch stuff around and test..


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[EddieO]

Wraiths are just plain hard on motors.........doesn't matter who makes em. This truck is just not very forgiving.....not to mention drivers aren't very forgiving with it either. I always thought the Losi would be king of the motor killers, but this thing takes the cake.

Why they went with a reverse rotation setup is beyond me, though we are now seeing people say the newer RTR kits have them installed as the manual says.

I find a lot of the problems come down to gearing. People up to 3s........and leave the same gearing. Motor blows up and they wonder why.......I think JRH has beaten into your heads enough, volt up......gear down.

Driving style seems to be a bigger killer too........while this thing is not a crawler, its certainly not a race truck! If you want to go fast that bad, go by a race truck!

Incorrectly timed motors often leads to failure.....make sure ya got it set right.

Free drivetrains are a must. Any binding on an already beefy drivetrain is just gonna increase amp draw, which increases heat.......which makes stuff go boom. Make sure every thing is free and well taken care of.

If you are running brushless, and you have a Boost capable ESC....I would recommend running very little timing in the motor and using the boost setting. This will give you the best torque and better top speed.

Later EddieO

 

[jcboof]

If you are running brushless, and you have a Boost capable ESC....I would recommend running very little timing in the motor and using the boost setting. This will give you the best torque and better top speed.

Later EddieO

I'm getting the new Honda ESC with VTAK setting. Check out this power graph!! Its running on 4s lipo with a 5t pinion. Its super duper fast.

LOL!! Yes, like Eddie and John have both said now, Volt up Gear down!"thumbsup"

 

[EeePee]

Yes, like Eddie and John have both said now, Volt up Gear down!

I believe it was a saying that had become due to the poor start up of sensorless outrunners. Just sayin'...

 

[JohnRobHolmes]

Indeed, it started with outrunners. I still preach it for everything else though, even ebikes. The wraith could use some gearing down from stock.

 

[EeePee]

I almost posted that in the form of a trivia question, asking who could tell me where/when/why that phrase was born.

 

[jcboof]

I believe it was a saying that had become due to the poor start up of sensorless outrunners. Just sayin'...

Man..... Just when I thought I had the perfect place to show off my new dyno graph, you gotta blow out my candle.

 

[off road again]

the problem in the beginning of this thread sounds to me like a bad ESC, ive had this happen to me before with brushed motors and it was not me stressing the motors, I solved the problem when i bought a new ESC and motor that were made for eachother(matching set 27T), broke it in with 3000mah 2s lipos.
wheels off the ground for 1st pack of break in
(DONT HOLD THROTTLE FULL) variation of throttle is key to a good break in.
after you ran 3 packs through it (2 on ground) feel free to hold throttle full pinched.
Ive ran same setup for years now with all sorts of gearing changes.

{my problem started first time i used 3s lipo}

 

[EeePee]

Just when I thought I had the perfect place to show off my new dyno graph, you gotta blow out my candle.

Start a thread... in the Newbie Forum.

 

[James888]

im about to put mmp and tekin 13.5 in mine do i need to worry about changing the diff gears around

 

[skid]

im about to put mmp and tekin 13.5 in mine do i need to worry about changing the diff gears around

Couple options, set motor timing to 0 and use the esc's cheat mode exclusively for timing, or flip the gears, run a bit of motor timing + esc timing to have faster forward and slower reverse.

 

[EeePee]

Start a thread... in the Newbie Forum.

Oh wait, I see you tried to post a graph already. It doesn't show up for me.

 

[James888]

Ok thanks