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Old 07-14-2009, 06:17 AM   #1
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Default odonnell truggy question

had the rear diff ring gear and pinion gear shaft strip out on me i did shim it according to the manual i used two shims on the pinion and 1 on each side of the diff cup outdrives has anyone had this happen or how you shimmed it will help thanks
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Old 07-14-2009, 06:25 AM   #2
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had the rear diff ring gear and pinion gear shaft strip out on me i did shim it according to the manual i used two shims on the pinion and 1 on each side of the diff cup outdrives has anyone had this happen or how you shimmed it will help thanks
Shim the diff tight as possible, you may think to yourself its way to tight, but will break in and be fine. IMHO you def need more than 2 shims. I think currently I have a thick with 2 thins on one side and 2 thins on the other. I like it tight. They always break in....
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Old 07-14-2009, 04:41 PM   #3
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Shim the diff tight as possible, you may think to yourself its way to tight, but will break in and be fine. IMHO you def need more than 2 shims. I think currently I have a thick with 2 thins on one side and 2 thins on the other. I like it tight. They always break in....
thanks for the advice troy and by no means am i calling you wrong but just seems a little excessive but i would like some more opinions the truck ever since i built it has roughly 3 tanks and not a super powerful engine and even after i took it apart the shims were correct from the manual i already have new parts but was wondering do you think i got bum parts or should i shim one side more then the other or if troy is right (im sure it works for his truck)but any other ideas would be appreciated
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Old 07-14-2009, 04:57 PM   #4
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I had the same thing happen on my Z01-B. I shimmed it to the same resistance as my Kyosho and Turmoil had and ended up blowing out the ring gear about 4 tanks in. For the replacement I shimmed it pretty tight. It loosened up after 4 or 5 more tanks. I'm now well into my second gallon and the diffs are still perfect.
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Old 07-14-2009, 04:58 PM   #5
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BTW, TP is one of the (if not *the*) top factory drivers for OD
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Old 07-14-2009, 06:08 PM   #6
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Like Troy said, run them tight! Very, Very, minimal play in the gear mesh. They will break in and be smooth as glass...
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Old 07-14-2009, 06:32 PM   #7
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thanks for the advice i will try it and let you guys know what happens
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Old 07-14-2009, 08:23 PM   #8
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My rear diff took two thicks and one thin on ring side, front took 2 thicks on ring side and 2 thin on other sides. The manual doesnt say use two, it shows a picture with just two, but under that it says "The number of shims needed, and the side on which they must be placed, may vary." Make it tight. Steve O'Donnell told me as tight as can be and still smooth and use three evenly spaced 3/4" long strips of black grease, then after initial run in, regrease it.
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Old 07-14-2009, 08:44 PM   #9
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BTW, TP is one of the (if not *the*) top factory drivers for OD
You do know there is two top factory drivers for O'Donnell that share the initials TP.
Taylor Peterson and Troy Pinkston
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