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  1. #1
    RC Racer
    Join Date
    Apr 2017
    Posts
    109

    Best Gearing for Speed

    Hello everyone,

    Recently I started to make a Traxxas 1/16th build just for speed/ on road purposes. I have the Traxxas 1/16 Rally wheels and tires, and a Castle 1406 4600kv sv3 system running a 1/10th 3s 5200 mAh battery. I went to speed test it last night, but I only got 37 mph on 3s. Nothing is wrong with the motor or the battery. This same combo gave me 60 mph in a 2wd ECX Amp MT. After running 3s for a while, the motor was barely even warm. I could've kept my hand on it for probably about a minute. It seems like it's not being pushed hard enough. I think the highest gearing combo possible in these 1/16th models is 31/45. Is this correct? Right now i believe I'm running 25/55 or 25/50. I understand that the smaller tires also affect top speed, and I'm looking at 1/10th 12mm foams now. I'm wondering if even 31/45 on 3s won't even push the motor to it's limits.

    If anybody has some experience with gearing with these models, please let me know what you think!

  2. #2
    RC Champion grizzly03's Avatar
    Join Date
    Dec 2014
    Location
    Adirondacks
    Posts
    2,131
    Have a look at this web site. It's a speed calculator that will show you about what speed a setup will have.
    https://scriptasylum.com/rc_speed/top_speed.html

  3. #3
    RC Racer
    Join Date
    Apr 2017
    Posts
    109
    Quote Originally Posted by grizzly03 View Post
    Have a look at this web site. It's a speed calculator that will show you about what speed a setup will have.
    https://scriptasylum.com/rc_speed/top_speed.html
    Thank you for sending that link. I put the info in for my 1/16 Rally, and it gave a theoretical top speed of 37mph, which is exactly what I got a few days ago. Hopefully it's that accurate at higher speeds as well!

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