Oh good, I guess there will be some modding to fit the small sprocket to the motor.
Oh good, I guess there will be some modding to fit the small sprocket to the motor.
Yep.
As someone who's concrete garage floor has been attacked by Jamie's axe I can say that the scooter motors are indeed well suited to this application![]()
Yeah 24V is their rated voltage for the application they're designed for (electric scooters) but they will handle less. Sam's runs on 22.2V and mine runs on 18.5V, and even at that it still has a good amount of power behind it and can self-right the robot without issue.
You can overvolt motors as well to get increased speed and power out of them, though this does shorten the lifespan of the motor. As a general rule, never go more than 50% over the rated voltage, so for example, a 12V drill motor can be run on 18V without it being too detrimental, but don't be surprised if it fails somepoint down the line.
I think we both use 18V drill motors, slightly larger than the standard ones you get from the likes of Argos and a little tougher. You can still use 12V motors on a higher voltage if your radio transmitter has a feature called dual rates. This allows you to set a lower limit for the drive motors so that they don't get the full voltage and risk being burnt out.
I'm thinking of using my Spektrum DX5e, but I don't think it has that dual rates feature.
and as I can't afford to waste money I'll use 12v motors and a 18v battery for my ram bot and use 18v motors and 22.2v battery for my axe bot (most likely a upgrade on the ram bot)
IIRC me and Jamie both use 18v drills that have 600 sized motors (slightly larger than the standard 550 sized you'll get in your bog standard argos drill), i do run both my axe and drive on 22.2v but i reduce the rates on my drive to try and make my motors not dead.
A dx5e doesn't have dual rates unfortunately, there is a switch you can flick to reduce the rates to 50% but that's not really useful in a combat robot.
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