| |
03-10-2005, 06:28 PM
| #1 |
| Rock Stacker Join Date: Jan 2005 Location: Hazelwood (sT Louis)
Posts: 69
|  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 Last edited by boner; 03-10-2005 at 06:33 PM. |
|  |
| Sponsored Links | |
| | |
|
03-10-2005, 06:32 PM
| #2 |
| RCC Addict Join Date: Apr 2004 Location: Cincinnati Ohio
Posts: 1,673
|
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. |
|
| |
|
03-10-2005, 06:36 PM
| #3 |
| Rock Stacker Join Date: Jan 2005 Location: Hazelwood (sT Louis)
Posts: 69
|
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 |
|
| |
|
03-10-2005, 06:39 PM
| #4 |
| RCC Addict Join Date: Apr 2004 Location: Cincinnati Ohio
Posts: 1,673
|
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 Last edited by AdamF; 03-10-2005 at 06:41 PM. |
|
| |
|
03-10-2005, 06:44 PM
| #5 |
| PapaGriz Yo   Join Date: Apr 2004 Location: In the garage building the wife a crawler
Posts: 13,137
|
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.  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. |
|
| |
|
03-10-2005, 06:54 PM
| #6 |
| RCC Addict Join Date: Apr 2004 Location: Cincinnati Ohio
Posts: 1,673
|
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. |
|
| |
|
03-10-2005, 07:01 PM
| #7 |
| Rock Stacker Join Date: Jan 2005 Location: Hazelwood (sT Louis)
Posts: 69
|
thanks for the replays i guess that it is time for 8/9 pinions and eventually a lathe motor (when i get the money)
|
|
| |
 |
| |
Linear Mode
