Need help with conversion

[Octavia34]

Hey there, I have a brushless red cat wendigo rock racer that I am trying to make into a crawler. I got a 12t titan motor to put on it, but it gets hot very quickly and smells bad. I was told that a 12t was not the right pick, I have 2.2 super swampers on it and it has a 17 tooth pinion gear, not sure about the spur gear, it’s stock. I have it hooked up to a xl5 brushed esc on lipo mode running a 2s lipo. It gets hot like I mentioned In less than a minute of drive time and a previous motor started to smoke and crackle, (same motor, just sitting in a box for a while) does anyone know what to do to make this be a good working crawler for cheap? Preferably a motor suggestion or possibly gear it down? Thanks!

[DrIsotope]

The Wendigo is geared irresponsibly high. Put in the smallest pinion you can-- a 9-tooth-- and a high turn motor-- 27-turn or higher. You could easily get away with a 45T in a Wendigo.

Then be prepared for a steep learning curve-- because the chassis has monumental torque steer, horrific bump steer, and the worst turning radius you're likely to encounter, ever.

But it will climb.

[Greatscott]

WELCOME TO THE FORUMS!!!

Like Isotope said, gear down the pinion to 9 - 10 tooth. Also, make sure the gear mesh isn't too tight.

The Titan 12T is a 550-sized motor, which translates into about a 20-turn 540-sized motor. This really is where your issue is, recommend going to a 30 or 35-turn motor, this should keep your motor from frying.

[durok]

Keeping the motor can in the slightly larger 550 size would be recommended, I'd get a Holmes Hobbies Trailmaster Sport 21t 550.

Check your temps after running for a bit, gear down as needed by swapping to a smaller pinion if it still runs hot.

The Titan 12t is more for lighter vehicles, 2S use and that's why a Titan 21t is used in their TRX-4 - more torque, can handle heavier vehicles and 3S.

If you can, I'd upgrade to a HobbyWing 1080 ESC - about $42, and that Holmes Hobbies motor is only about $20...

That will make for a better crawler - and the ESC is programmable, comes with a simple plug-in programming box.

[Octavia34]

Thank you everyone! I will try a 9 tooth pinion gear and I think I have a 45 turn motor laying around, I will try to come back and update! This is my first time using this website, so thank you for the good first impression.

[Octavia34]

Hello! I ended up getting a 10 tooth pinion gear and tried the 45t motor. It worked great. Very slow, but it crawls pretty good. Thank you for the help.


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