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Help
Posted: Mon Oct 21, 2019 5:16 pm
by Speedbird193
My m4a3 heng long shermans left gearbox failed i replaced it but that one broke after about 10 seconds of movement what could be causing the undue stress on the left side
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Re: Help
Posted: Mon Oct 21, 2019 5:21 pm
by silversurfer1947
Have you checked that the track and idler are free running? Just out of interest, what surface were you running on?
Re: Help
Posted: Mon Oct 21, 2019 5:30 pm
by Speedbird193
silversurfer1947 wrote:Have you checked that the track and idler are free running? Just out of interest, what surface were you running on?
Grass
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Re: Help
Posted: Mon Oct 21, 2019 6:16 pm
by Lert
Speedbird193 wrote:Grass
That might be a part of the problem, HL gearboxes are generally not made to run on grass.
Re: Help
Posted: Mon Oct 21, 2019 6:56 pm
by forgebear
also depends on what gears you have in your tank
plastic
zinc
or black steel
Re: Help
Posted: Mon Oct 21, 2019 6:59 pm
by Speedbird193
forgebear wrote:also depends on what gears you have in your tank
plastic
zinc
or black steel
I had metal gears
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Re: Help
Posted: Mon Oct 21, 2019 7:09 pm
by forgebear
are they like a silver look to them if so they will be zinc comes from heng long as a pro version the zinc is soft and will not stand up the turning on grass
Re: Help
Posted: Mon Oct 21, 2019 7:12 pm
by forgebear
just in case you think of getting new ones again here are the steel ones
https://www.forgebeartanks.com/store/p4 ... _Tank.html 
Re: Help
Posted: Mon Oct 21, 2019 7:16 pm
by Speedbird193
They were a dull metal
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Re: Help
Posted: Mon Oct 21, 2019 7:30 pm
by jarndice
They are known by us as "Pot Metal" Gearboxes and are less reliable than Heng Longs Nylon Gearboxes,
Avoid them and keep the Nylon or go for the Black Steel option.