Coolbank Stuart rear idler wobbly

If you have a tank query and you can't find the answer anywhere else, post here. (TIP - Check for answers in FAQ, use the 'search' facility or even check this board before posting here).
Forum rules
If your question is electronics related please post it in one of the relevant boards here: viewforum.php?f=31
Post Reply
ColemanCollector
Warrant Officer 2nd Class
Posts: 1411
Joined: Sat Jan 14, 2023 8:50 pm
Location: Ontario, Canada

Coolbank Stuart rear idler wobbly

Post by ColemanCollector »

While working on my Coolbank Stuart I noticed a huge amount of lateral play in the rear idler, as in 3mm each side off center! As you can see in pics below, the pin used to mount the idler arm is a much smaller diameter than the hole it goes through. Is there supposed to be a bushing of some sort in there?
20260129_145914.jpg
20260129_145914.jpg (1.53 MiB) Viewed 282 times
20260129_145929.jpg
20260129_145929.jpg (947.05 KiB) Viewed 282 times
No big deal to fill with JB Weld and then drill to fit the pin, but it seems pretty sloppy from Coolbank. This was a preorder Stuart from Banggood so early in production, and so far the gun wasn't connected to the servo, masking tape still on the headlights, and the mounting screws on the bogies in backwards. Friday tank...sigh...

Thanks, Mike.
Elbows up
Tiger6
Warrant Officer 1st Class
Posts: 1552
Joined: Fri Mar 09, 2018 10:38 pm

Re: Coolbank Stuart rear idler wobbly

Post by Tiger6 »

All mine came with masking tape on the headlights
User avatar
jhamm
Warrant Officer 2nd Class
Posts: 1124
Joined: Fri May 19, 2017 7:21 am
Location: Germany
Contact:

Re: Coolbank Stuart rear idler wobbly

Post by jhamm »

Hello,
masking Tape on the headlight is standard...
I press a piece of brass tube in the idler.
However, a little bit of play is necessary, otherwise the track will run off.
ColemanCollector
Warrant Officer 2nd Class
Posts: 1411
Joined: Sat Jan 14, 2023 8:50 pm
Location: Ontario, Canada

Re: Coolbank Stuart rear idler wobbly

Post by ColemanCollector »

I went the "fill it with jb weld" route, and drilled it the correct diameter for the pin. Perfect correction for a sloppy bit of Coolbank design. I will never carp about a wobbly HL suspension again...

Mike.
Elbows up
Post Reply

Return to “General Questions”