a new crawling motor?
 

Iwas looking through a catolge in my electricalclass at school the other day and saw a motor in there. it is a 12 volt motor and gear reduction unit. it sdays the reduction ratio is 76.8-1 and the motor speed is 4500 rpm at 12 volts overall it is about 2'' long and about 1'' wide. Iwas wondering what you guys thought about this. I was thinking about possibly putting this on my clod with lst tires. Ishould have enough room for it between the links but i really wanted to know about how that gear ratio would work with something like a 13 and 12 tooth pinion on it. would there still be any wheel speed left or would it be to low. I don't know much about what ratio is to low on a clod yet so any help would be apperciated


Heres the web site
www.elexp.com

click on search by alphabet then clickon m then go down to motors and click on the 12volt gearhead motor

I was not able to bring up that webpage.

That motor is probably a smaller motor. It might not have enough torque to work in your clod. Also, you probably wont be able to fit a 32p pinion gear on it since smaller motors have a smaller diameter output shaft. My lathe motor is about 2" long and 1.425" wide.

sorry about the web site i tried to get it to send you strait to the motor web page but i guess it did not work. i just fixwed it on the first post but here it is agian

www.elexp.com

search by alphabet then go to motor then to the gearhead 12 volt motor

wow...58 rpm? lol...your clod wouldn't even move with that slow of a motor!

and

Stall Torque: 4.3 kg - cm = 60 oz - in.

thats nothing

The problem is the 4500rpm. That's prolly half the speed of a 55T motor on 7.2V.

4500rpm / (76.8 x 30) = 1.95rpm
Yer tires ar going to be turning at 1.95 rpm.

Converting that to linear speed yer rig would go 0.03 mph. :shock:

If you put a 20T pinion in the Clod.
4500 rpm / (76.8 x 19.5) = 3 rpm

That would be 0.06 mph. I dont think it is a good idea. Waaaaayyyyyy too slow IMO.

They make larger, faster, higher torque motors with built in gear reductions, but they are too big to fit on a clod axle.

At least your thinking in the right direction.

thanks for the replays i guess that it is time for 8/9 pinions and eventually a lathe motor (when i get the money)