Thanks everyone for all your replies 😊 The quoting isn’t working quite right but I have bodged it so it makes sense for now lol

Shakesc said: What wheel size are you running?
The wheel size is 100mm, it’s a trolley wheel with a bike tyre screwed to it lol

Al_ said: What issues are you having with robustness of the current drive system?
Currently its gears stripping, but I think this might have been due to impact. The gears closest the wheel stripped and also I went through two 550s motors in one event lol.

It’s the cost of the P61s that makes me hesitant because I be a humble shelf stacker lol.

maddox10 said: If you're looking for a robust drivetrain, the Banebots are the only commercial "lightweight" solution at the moment.

Unless Ellis resurrects the Saturns. As those are to my feeling the better option.
Yea I really wish I could get the Saturns because they sound pretty great!

Danjr1 said: These were shared recently on Facebook, and a few people commented that they use them with 775 motors on 16:1
They actually look really decent for the price, I would have to re-think how I mount the wheels though, have you any suggestions? Its just a nylon wheel with a coupling nut pressed into it to screw on to a standard drill gearbox.

Ocracoke said: I've used the 13.7:1 planetary gearboxes with the 18V 775 motors that Gimson sell as a single unit to great effect on 6S.
Yea, they look great also! Never even knew this company existed. The main trouble I have at the moment is I am running a 6s LiPo which limits me to what I can use. Even the 550s 18v motors I was using (that could handle 24v) were getting pretty dam hot and breaking after a fight or 2. The only drills I can see that might be suitable are the GUILD 18v drill drivers on Argos. Assuming there able to handle the power, they seem to use plastic gears in a lot of drills now. I got a black and decker drill to try not long ago and it looked promising but then one stage was plastic gears :/

I’m kind of in a dilemma where I’m not sure which way to jump. Keep buying drills for parts or buy a purpose built gearbox and then get the motors cheap.

Any advice is much appreciated and thanks for taking the time to reply