Could this help keep water out?

[jackalope]

Sealed output shaft bearings, then add double sided 3M tape to the inside. The 2 screws that hold the bearings on are inside of the tape or if you like add a dab of glue. I've done this to all of my tanks and no problem with water getting in there.

[jackalope]

Very welcome sir.

[jarndice]

With the Panzer 4 if you fit Flanged Bearings on the gearbox output shaft by sliding them down the shaft until the Flange touches the Lip of the Gearbox output shaft Cover,
As long as you smear a little Superglue on the lip to secure the flange of the bearing water will not enter the hull at that point,
It is also both cheaper and easier than fitting conventional Gearbox output shaft bearings,
This also avoids drilling into the hull to lock the bearings into position.
I have to add that water is more likely to enter the Hull through the Suspension and if you don't move any under hull switching then water in the hull is going to be the least of your problems.
Shaun.

[jackalope]

Try 3M double sided tape on the output shaft bearings you really don't even need the screws just the tape. Which then seals the bearing disc to the hull. That much tape is very difficult to move so the bearings work as intended without screws.

[Raminator]

Is that cloth- or foam-backed tape, Terry? Does it act kind of like a gasket, then?

[jackalope]

Is that cloth- or foam-backed tape, Terry? Does it act kind of like a gasket, then?

It is foam backed and that is exactly what it does.

It is very dense very thin foam with very strong adhesive on both sides.

[jackalope]

I get it at the local automotive parts store. If it is not available where you live this is what you're looking for on line.....
https://www.3m.com/3M/en_US/company-us/ ... 071&rt=rud

You want the automotive trim version. It says its permanent but it can be removed.

[Raminator]

Neat, I'll have to check it out. Thanks for the recommendation!

[Marc780]

I'd like to see your water proofing techniques, how far into water do you take your tanks? On Youtube I've seen an R/C BMP, 1/16 scale probably, and the operator just drives it into water and motors away without further ado. And the model continues to operate. This fellow did not post any details of the water-proofing on the little BMP, and I've tried to find who sells this BMP but found nothing at all. I get the idea it's not scratch built it's an actual kit, but probably only available in Russia. I couldn't find anybody who sells it, period.

Anyway iit's obvious you have considered water proofing a lot more then i have, I'm curious what you've tried so far? I'd think you have to put an o-ring or sealant around every exit and seam in the hull including the suspension arms, the hull-upper hull joint and even the turret ring and main gun hole. How far can you drive the tank into water before it starts floating?

[jackalope]

Electronics go in a box, but I try not to go above the lower hull section. If some gets in the electronics are protected in the box.