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08-27-2011, 09:01 PM | #1 |
Rock Crawler Join Date: Jul 2011 Location: north little rock
Posts: 979
| Traxxas overdrive question
What does the Traxxas overdrive do? Are you replacing the spur with a Traxxas unit or am I missing something?
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08-27-2011, 09:20 PM | #2 |
Quarry Creeper Join Date: Apr 2009 Location: sandia park, nm
Posts: 263
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just the pinion, at least that's what i did. and it overdrives the front axle causing the rear to drag slightly giving a mild dig effect. search it, someone posted a video displaying operation. |
08-28-2011, 06:14 AM | #3 |
RCC Addict Join Date: Aug 2007 Location: Marshalltown
Posts: 1,003
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It is a 1or2 tooth larger pinion. It helps reduce torque twist by overdriving the front axle, while leaving the rear at normal ratio. This mod has helped my rig climb and feel a lot better when getting through courses. |
08-28-2011, 06:22 AM | #4 |
I wanna be Dave Join Date: Sep 2005 Location: Houston, TX
Posts: 16,952
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08-28-2011, 11:29 AM | #5 |
Rock Crawler Join Date: Jul 2011 Location: north little rock
Posts: 979
| Where does the "Traxxas" come in on this? Is the pinion different then the one on the motor?
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08-28-2011, 11:49 AM | #6 | |
I wanna be Dave Join Date: Sep 2005 Location: Houston, TX
Posts: 16,952
| Quote:
The gear you are after is the one on the right: http://www3.towerhobbies.com/cgi-bin...&I=LXXKK8&P=ML | |
09-09-2011, 02:55 AM | #7 |
Quarry Creeper Join Date: Aug 2011 Location: pasadena
Posts: 203
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not trying to hijack a thread, but is it a direct bolt-on or is there moding needed to pinion shaft/drive shaft
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09-09-2011, 04:32 AM | #8 |
RCC Addict Join Date: Mar 2010 Location: Alburtis
Posts: 1,227
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I just did this mod last night and it is a direct drop in, no mods required. Mine was a little rough feeling, but a friend told me it will go away when you run it. Kind makes me nervous, but I am giving it a try. Wes |
09-09-2011, 05:47 AM | #9 |
Rock Crawler Join Date: Jul 2011 Location: north little rock
Posts: 979
| Post back what you think please. I'm getting ready to do it. Do you have the part number on hand. I've searched but it's hidden well.
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09-09-2011, 06:00 AM | #10 | ||
I wanna be Dave Join Date: May 2006 Location: akron
Posts: 4,054
| Quote:
Quote:
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09-09-2011, 08:43 AM | #11 |
RCC Addict Join Date: Mar 2010 Location: Alburtis
Posts: 1,227
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Tra7079
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09-09-2011, 09:16 AM | #12 | |
Rock Crawler Join Date: Jul 2011 Location: north little rock
Posts: 979
| Quote:
What is that part number again? That was stupid on my part for sure. Thanks seriously for pointing that out. I do need to read all the info and not just the high points. I promise to do better. | |
11-08-2011, 12:17 PM | #13 |
Pebble Pounder Join Date: Sep 2011 Location: Bellmawr NJ
Posts: 126
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sorry for the zombie thread, however I['m having a issue directly related to this mod and I have heard of a solution but can't find it. My gears are skipping, it started mildly and went to the slightest amount of resistance rather quickly. I nut and bolted the housing halfs together so i know thats not it. What I need to do is shim the pinion gear closer to the ring gear so i have a better mesh. What are people using for shims? I thought i heard a traxxas part being used but I'll be damned if I can find it. Any help will be appreciated.
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11-08-2011, 12:52 PM | #14 | |
I wanna be Dave Join Date: Nov 2010 Location: 07456 N. NJ USofA
Posts: 8,314
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Without looking myself (I can make my own shims....no waiting) I can't tell you what others are using. | |
11-08-2011, 01:07 PM | #15 |
Pebble Pounder Join Date: Sep 2011 Location: Bellmawr NJ
Posts: 126
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wanna sell me a handful of thin ones that I can stack if needed? I'll trust ya enough to send you a money order
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11-08-2011, 01:07 PM | #16 |
Pebble Pounder Join Date: Sep 2011 Location: Bellmawr NJ
Posts: 126
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or I can trade you a bunch of 3 mm stainless hardware
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11-08-2011, 01:27 PM | #17 |
Newbie Join Date: Nov 2010 Location: Atlanta
Posts: 44
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Mine was doing the same thing. I went down to the local hardware store and found small e clips that worked perfect. Just put one between the ring gear side of the carrier anb the bearing. I am not sure on the size but I can check tonight and let u know. I will post a pic later also. I have put these in about six axles that were having the same problem and they all worked perfect. Derek |
11-08-2011, 01:33 PM | #18 |
Pebble Pounder Join Date: Sep 2011 Location: Bellmawr NJ
Posts: 126
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got e clips here at work, I'll grab a few different sizes and try them. Thanks for the idea!!!
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11-08-2011, 01:40 PM | #19 |
Newbie Join Date: Nov 2010 Location: Atlanta
Posts: 44
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They were more of a c clip but they were just the right thickness
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11-08-2011, 05:43 PM | #20 |
Rock Stacker Join Date: Dec 2009 Location: Gardner
Posts: 90
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I've done the mod and shimmed it to where you feel movement but cant see it. Too tight and it will bind , too loose and it skips so closer the better. Use a good quality grease when you reassemble it. Some use marine grease and some use the red tacky grease at car parts places. I'm sure some vendor around here sells a specialty diff grease, but whatever you use should be very thick so it clings to the gears and doesnt get thrown off. I used a synthetic royal purple made for a grease gun mainly cause it was already in my garage,lol Makes the steering a little tighter too since the front is leading more. I've heard of it referred to as a mini dig since the front drags the rer around alittle. I wouldnt get carried away with that since its only 1 tooth difference, but worth it for sure!
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