Windscreen wiper motors

Yep, that is my plan. 4/1 reduction. I hope it will be fast and powerful enough.

certainly be fast , but im not sure it will be very powerfull . have you got any pics of your setup? :)

Im building my setup at the moment! :proud: I´ll get four 05B (what ever it means) chain sprockets tomorrow morning and going to make the 4wd system work. Then im going to get some sprockets for the gearing between motors and wheels.

What do you people think about gearing? 4:1 or 3:1 (100mm wheels)

Personally, I would opt for a 1:3 gear ratio. 1:4 would give you a very fast top speed but your ability to control the robot accurately could be compromised. With that much of a gear ratio you're likely also to lose a lot of the torque from the wiper motor; I couldn't say for sure but the chances are you'd go to ram another robot and you would be struggling to applying any pushing force.

1:3 would still give you plenty of speed in an arena but would provide you with more available torque, so it would be my choice

I also thought that 3:1 would be better , im probably going for that too.

How many amps these motors take i have one mamba maxx speed controller, but would it be enogh for 2 motors?

Maybe i can do some testing by putting a like 50 amp fuse between the ESC and motors. If it burns, i´ll put a bigger one, so i can see how many amps it takes. I have a no idea where to get ampmeter. (im going to have a switch steering)

for the short time when i used wiper motors in my FW (i use drill motors now) a 15 A cotinous and 100 A peak speedo was fine , never mesured the amps being pulled , but the thing barely got warm

Hi, did some testing today and found out that 3/1 is quite slow on 12 v, but it will do it. But the problem is, that i dont know how good she system will be, if i woult put a 34mm sprockets to the wheel shafts and 100mm sprockets to the motors, i dont want to use many gears because i cant get all sizes.Going to the store tomorrow and look what they have.

so if I'm reading this right, you are taking a wiper motor which gears itself down only to gear it up again?

Scrap them and use drill motors or similar. You are going to spend 3 times the cash and time on those wiper motors