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12-28-2007, 01:27 PM
| #1 |
| Pebble Pounder Join Date: Jul 2007 Location: Sachse TX
Posts: 145
|  Front and Rear Gearing
I did a search and did not find the answer to a question I have about Clod based Crawlers. What is the thinking in using different gear ratio's between the front and rear axles? |
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12-28-2007, 01:35 PM
| #2 |
| I wanna be Dave Join Date: May 2006 Location: FOUR 8 OH
Posts: 4,913
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Just like in a 1:1, if the ratios are different, the wheels will turn at different speeds and eventually cause binding and then breaking of parts.
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12-28-2007, 01:49 PM
| #3 |
| Rock Crawler Join Date: Jan 2005 Location: Windsor, VA
Posts: 573
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I am running an 8 tooth pinion in the rear and a 9 tooth in the front to help reduce the stall. I haven't had any problems with this setup, and I do believe that a bunch of people are doing the same thing I am. |
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12-28-2007, 01:50 PM
| #4 |
| Quarry Creeper Join Date: Jun 2006 Location: Folsom
Posts: 209
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It's to try to overcome clodstall. Most people will run 1 tooth more in the front axle. Also, some will run motor with more torque in the rear like a 55T in front and 65T in the rear. It won't hurt anything in a Clod as there is no mechanical link between the two axles.
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12-28-2007, 02:44 PM
| #5 | |
| I wanna be Dave Join Date: May 2006 Location: FOUR 8 OH
Posts: 4,913
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True, I didn't even think of that. | |
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12-28-2007, 02:46 PM
| #6 | |
| MODERATOR™   Join Date: Jul 2004 Location: Ohio
Posts: 18,928
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12-29-2007, 01:47 AM
| #7 |
| Newbie Join Date: Apr 2007 Location: Beaverton
Posts: 11
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I've been running 55T in front and 65T in back now for a while. Seems to do pretty well  |
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12-29-2007, 01:51 AM
| #8 |
| I wanna be Dave Join Date: Sep 2005 Location: USA
Posts: 11,196
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It's been proven running 2 different pinions doesn't change Clod Stall. The best way to fight Clod stall is running Dual ESC's. Run what ever pinion gives you the gearing and speed you want. One thing I have found out thou. The lower the gearing and higher volts will hold off the Clod stall a little longer. The stall come into effect when there is binding or to much traction and not enough power to over come. Lower the gears and throw more volts will lesson the chances of Stalling.
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12-31-2007, 11:00 AM
| #9 |
| Newbie Join Date: Jan 2007 Location: Whitby
Posts: 1
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What exactly is CLOD STALL?
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12-31-2007, 01:08 PM
| #10 |
| Newbie Join Date: Dec 2007 Location: Livonia
Posts: 19
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your able to run a tooth or two difference in the pinion gearing. For example you can purchase a 4.10 r&p for a real truck for the rear, and a 4.11 r&p for the front and run fine. If you were to do lets say a 4.56 in the rear and 4.11 in the front, well yes you will have binding. The gears for the front will spin at a different speed than the rear causing it to bind.
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01-01-2008, 11:06 AM
| #11 | |
| I wanna be Dave Join Date: Sep 2005 Location: Houston, TX
Posts: 16,952
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 Remember, this is on a Clod....
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01-01-2008, 11:14 AM
| #12 | ||
| RCC Addict Join Date: Mar 2006 Location: Xxx
Posts: 1,118
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Quote:
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01-01-2008, 11:17 AM
| #13 |
| Pebble Pounder Join Date: Jul 2007 Location: Sachse TX
Posts: 145
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Thank you all for your comments. This has helped a lot.
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01-01-2008, 10:18 PM
| #14 |
| Newbie Join Date: Dec 2007 Location: Livonia
Posts: 19
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sorry i'm new with r/c crawling. I was just saying in real cars thats what is applied.
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