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07-31-2014, 03:31 AM | #1 |
Rock Crawler Join Date: Jul 2013 Location: Kansas City
Posts: 760
| keep blowing out ring & pinion in the rear
Ok,so after running at Goat Hill I blew out my rear ring & pinion. I replaced the gear set after driving around I stabbed the throttle and noticed it started clicking again. I am running a 13.5 brushless viper w/ Tekin RS esc. Been running like this for 6 months or so. Everything looks to be in order,no stripped screw holes or beat up plastic.. it is still all stock besides the beef tubes. Is it time for some axle housing upgrades? What would you recommend?
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07-31-2014, 03:52 AM | #2 |
Rock Crawler Join Date: Dec 2011 Location: Blacksburg
Posts: 506
| Re: keep blowing out ring & pinion in the rear
I shimmed my pinion by putting washers where the drive shaft connects to the pinion. I have only had one ring and pinion failure(actually a bearing failure) since and I run a 3300 pro4. I know there was a discussion about changing to oil lite bushings to help prevent this same problem. You might can do a search in this forum and find it.
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07-31-2014, 05:52 AM | #3 |
Rock Stacker Join Date: May 2014 Location: SoCal
Posts: 80
| Re: keep blowing out ring & pinion in the rear
Check out the first page of my build thread. U4RC 2.2 Comp Racer "Sucker Punch" Some fellas offered up some real good advice on shimming the gears in the axles. |
07-31-2014, 08:36 AM | #4 |
Rock Crawler Join Date: Jul 2013 Location: Kansas City
Posts: 760
| Re: keep blowing out ring & pinion in the rear
I forgot to mention I have shimmed the pinion. Guess it needs more,ugggg. Thanks
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07-31-2014, 07:26 PM | #5 |
Rock Crawler Join Date: Jan 2012 Location: middle TN
Posts: 612
| Re: keep blowing out ring & pinion in the rear
I would double check the bearings. I was having the same trouble with my gears. The issue was always a bad pinion bearing. Recently swapped to the dlux housings with the bigger bearing mod, and so far so good.
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08-01-2014, 03:22 AM | #6 |
Rock Crawler Join Date: Jul 2013 Location: Kansas City
Posts: 760
| Re: keep blowing out ring & pinion in the rear
Was reading where Harley said to ditch the bearings all together and use bushings. I am going to tear it down this weekend and see what's going on.
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08-01-2014, 04:34 PM | #7 |
Rock Crawler Join Date: Jan 2012 Location: middle TN
Posts: 612
| Re: keep blowing out ring & pinion in the rear
I tried the traxxass bushings before buying the dlux housings. I ran the bushings one time during a scale gtg. honestly they had as much slop at the end of the day as they did with a bad bearing. Ruined a set of hd gears that day, and ordered a pair of dlux housings that night. You may get better results with the bushings than I did though.
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08-01-2014, 04:56 PM | #8 | |
I wanna be Dave Join Date: Apr 2004 Location: SoCal
Posts: 5,027
| Re: keep blowing out ring & pinion in the rear Quote:
Helical cut gears make the thrust issue worse, but the under drive set has the best mesh, and it is helical cut. | |
08-01-2014, 09:19 PM | #9 |
Rock Crawler Join Date: Jul 2013 Location: Kansas City
Posts: 760
| Re: keep blowing out ring & pinion in the rear
Well after very meticulously shimming up the rear gear and installing a new set HD gears AX30395, I was testing it out and it drove nice and smooth..... until I rolled into it a little harder it was sounding great but right at the top of the throttle it started clicking again. I brought it in, and the gears still feel tight in the mesh so I can only think, is it flex from the bearing carriers?? It is still bone stock PS wraith axles with a 13.5 brushless. I need to figure this out at $26 a set of gears, its getting irritating.
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08-02-2014, 05:44 AM | #10 |
Rock Crawler Join Date: Jul 2013 Location: Kansas City
Posts: 760
| Re: keep blowing out ring & pinion in the rear
Ok I have tore it back down and can find zero wrong. I mean nothing explains why I and annihilated 3 sets of gears 1 right after another. Now I am on to just replacing the whole housing and building it a little beefy before I install it. I am totally perplexed since the stock gear set lasted well over a year and now I cant drive the time it takes to get a smoke in. This is weird and costlty
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08-02-2014, 10:16 AM | #11 | |
I wanna be Dave Join Date: Apr 2004 Location: SoCal
Posts: 5,027
| Re: keep blowing out ring & pinion in the rear Quote:
Running OD gears in both axles or OD/UD combo, could also contribute to the problem when not crawling slow. | |
08-02-2014, 10:26 AM | #12 |
Rock Crawler Join Date: Jul 2013 Location: Kansas City
Posts: 760
| Re: keep blowing out ring & pinion in the rear
I am running stock 38/13 gearing. I am almost certain it is a flexing issue cause it is ok until you put the juice to it. It is being tore done now.
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08-02-2014, 10:43 AM | #13 | |
I wanna be Dave Join Date: Apr 2004 Location: SoCal
Posts: 5,027
| Re: keep blowing out ring & pinion in the rear Quote:
Also, the UD gear sets offer the best mesh, something else to consider. | |
08-03-2014, 01:06 AM | #14 |
Newbie Join Date: Dec 2013 Location: scappoose
Posts: 44
| Re: keep blowing out ring & pinion in the rear
Tried bushings, replaced bearings and shimmed maximum 2 batteries ran on any setup and ring/pinion destroyed after bearing failures. Even with Currie axles. Help please
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08-03-2014, 02:45 AM | #15 |
RCC Addict Join Date: Aug 2007 Location: Seattle
Posts: 1,765
| Re: keep blowing out ring & pinion in the rear |
08-03-2014, 03:56 AM | #16 |
Rock Crawler Join Date: Jul 2013 Location: Kansas City
Posts: 760
| Re: keep blowing out ring & pinion in the rear
Well After looking and looking again it turned to be a Axial iron cross locker that was broke giving me hell. Replaced the locker and cup, everything seems to be great now.
Last edited by realsickclown; 08-03-2014 at 04:14 AM. |
08-03-2014, 08:04 AM | #17 | |
RCC Addict Join Date: Jun 2006 Location: IN THE PIT !!
Posts: 1,039
| Re: keep blowing out ring & pinion in the rear Quote:
your best bet - HD F1 lockers - HD gears & deluxe axle housings, then no more problems - ever ! | |
08-03-2014, 10:51 AM | #18 |
Rock Crawler Join Date: Jan 2012 Location: middle TN
Posts: 612
| Re: keep blowing out ring & pinion in the rear |
08-03-2014, 03:58 PM | #19 |
Newbie Join Date: Dec 2013 Location: scappoose
Posts: 44
| Re: keep blowing out ring & pinion in the rear
Vanquish Currie axles, don't think it's possible?
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08-03-2014, 06:53 PM | #20 |
Rock Crawler Join Date: Jul 2013 Location: Kansas City
Posts: 760
| Re: keep blowing out ring & pinion in the rear
Well I got a F. I. Locker for the rear and next week I'll try a hot racing in the front. Unless I am wowed by the grip fab gear.
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