Heng Long Sherman don't go straight

Discuss the good old Heng Long electronics here, whether its mods on them or anything else, it goes here!
Post Reply
Alextrados
Recruit
Posts: 5
Joined: Fri Jun 08, 2018 10:15 pm

Heng Long Sherman don't go straight

Post by Alextrados »

Hello all !
I have my first RC tank, an Heng Long Sherman M4
I have an issue with it since yesterday, it doesn't go straight forward, the right track is not moving as fast as the left one
I checked if something was wrong with the tracks or gear box but nothing.
I inverted the wires from the motors to the transmitter and the problem switch to the left.
What can I suspect now ? A transmitter or crystal problem ?
Thank you

Image
User avatar
midlife306
Warrant Officer 1st Class
Posts: 2238
Joined: Sun Aug 27, 2017 10:34 am

Re: Heng Long Sherman don't go straight

Post by midlife306 »

Do you have a trim on the tax you can adjust?
Cheers
Wayne


Sent from my iPhone using Tapatalk
Alextrados
Recruit
Posts: 5
Joined: Fri Jun 08, 2018 10:15 pm

Re: Heng Long Sherman don't go straight

Post by Alextrados »

I transfered the wires from the cn6 to the cn7 of the mfu, so the back become forward and the pb transfered to the left.
The trims on my transmitter are stuck in place, impossible to use...
User avatar
Raminator
Warrant Officer 2nd Class
Posts: 1266
Joined: Tue Aug 11, 2015 9:57 am
Location: Newcastle, Australia

Re: Heng Long Sherman don't go straight

Post by Raminator »

If the problem switches sides when you swap the wires over, you can rule the gearboxes out. It could possibly be the motors though, they may be timed differently (i.e. they are faster in one direction than the other). You can get replacement motors cheaply, they should only be a few Euros each.

Does the tank super spin faster in one direction than the other?
Jay-Em
Corporal
Posts: 292
Joined: Sun Jul 17, 2011 9:11 pm
Location: The Chilly and Flat part of the Netherlands' North.

Re: Heng Long Sherman don't go straight

Post by Jay-Em »

I concur with son-of-a-gunner

Check the trim first. It’s quite easy to move it by accident.
If the tank went straight at first, then only a catastrophic failure of one of the motors will let it start to veer off suddenly if the trim hasn’t changed position.

And if the motors are shot, it’s only about 10€ to get two far better Taigen replacements. ( the ones with the blue end-bell)
Alextrados
Recruit
Posts: 5
Joined: Fri Jun 08, 2018 10:15 pm

Re: Heng Long Sherman don't go straight

Post by Alextrados »

Hello all
I finally replaced the RX18 board and it works !
It seems that I toasted it on rough terrain. Next time I will be more careful ! Thanks for your help !
Jay-Em
Corporal
Posts: 292
Joined: Sun Jul 17, 2011 9:11 pm
Location: The Chilly and Flat part of the Netherlands' North.

Re: Heng Long Sherman don't go straight

Post by Jay-Em »

Alextrados wrote:Hello all
I finally replaced the RX18 board and it works !
It seems that I toasted it on rough terrain. Next time I will be more careful ! Thanks for your help !
Maybe it's an idea to cut a hole in the top of the RX18 and glue a small fan to it. split it from the smoker port or something. In my experience that really helps when the MFU starts to cook in heavy grass, or mud and such.
Post Reply

Return to “Heng Long”