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06-20-2014, 02:08 PM | #21 |
I wanna be Dave Join Date: May 2007 Location: Fairfield ME
Posts: 3,886
| Re: Underdrive for the R1... Finally |
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06-21-2014, 05:34 PM | #22 |
Rock Crawler Join Date: Nov 2012 Location: Charlotte
Posts: 931
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This is f'n awesome. Great work bud.
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09-24-2014, 07:32 PM | #23 |
Pebble Pounder Join Date: Nov 2011 Location: Central Kansas
Posts: 149
| Re: Underdrive for the R1... Finally Excellent solution! I'm all over it!
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10-08-2014, 05:50 PM | #24 |
Pebble Pounder Join Date: Apr 2013 Location: Bonney Lake
Posts: 127
| Re: Underdrive for the R1... Finally
Sweet mod man. My only concern would be the tiny 2.5mm bearings (or bushings if u switched) in the portals would be stressed even more by the difference in drive ratios causing more frequent bearing/bushing failure and gear grinding. It probably wouldnt be too bad depending on how u drive but just something to consider. Not dissing the mod i know how beneficial OD/UD can be just my 2 cents.
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01-05-2015, 05:32 AM | #25 |
Newbie Join Date: Dec 2014 Location: Central Vermont
Posts: 29
| Re: Underdrive for the R1... Finally
Nothing all that great to add aside from a bump to the top & a thank you to Super for taking the time and effort to find a way. Would be pretty cool if we could drag the section outta the graveyard too... an easy way to give the whole front/rear under-drive/over-drive thing a try would be to simply have two different sized tires front/rear. Would accomplish the same effect as doing it in the diffs. Might look odd granted but it'd give ya an idea of how the set up handles and if you'd like it or not. Last edited by vtlandcruiser; 01-07-2015 at 05:48 AM. |
03-09-2015, 11:38 PM | #26 |
Newbie Join Date: Mar 2015 Location: oregon
Posts: 2
| Re: Underdrive for the R1... Finally
Just did this to my R1 last week. It's like night and day difference in the rocks. |
03-09-2015, 11:47 PM | #27 |
Newbie Join Date: Mar 2015 Location: oregon
Posts: 2
| Re: Underdrive for the R1... Finally |
03-21-2015, 06:50 AM | #28 |
Newbie Join Date: Sep 2014 Location: west newton
Posts: 38
| Re: Underdrive for the R1... Finally
thanks for your post it was very informative . I'm getting a sawback. Do you think it will work to put the R! gears in the sawback to give it over or under drive ?
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03-21-2015, 07:08 AM | #29 |
I wanna be Dave Join Date: Feb 2007 Location: South FL
Posts: 3,349
| Re: Underdrive for the R1... Finally |
03-21-2015, 04:13 PM | #30 |
Newbie Join Date: Sep 2014 Location: west newton
Posts: 38
| Re: Underdrive for the R1... Finally |
08-01-2015, 05:02 PM | #31 |
Newbie Join Date: Oct 2014 Location: Greece
Posts: 15
| Re: Underdrive for the R1... Finally
Wouldn't it work if you kept the original ring gear of the r1 and just use the filed down pinion? It would save some time having to adjust the ring gear with the shims etc.
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08-01-2015, 08:41 PM | #32 |
Rock Crawler Join Date: Dec 2014 Location: In the sticks
Posts: 913
| Re: Underdrive for the R1... Finally Nope. Tried it and it just wouldn't work as well as it needs to. I did mine a little differently, but same results. Very noticeable difference and well worth the time. Now to put the R1 gears in the front of my Sawback |
08-02-2015, 04:56 AM | #33 |
Newbie Join Date: Oct 2014 Location: Greece
Posts: 15
| Re: Underdrive for the R1... Finally
Just figured it would because the ring gears are same tooth count. I don't own an r1, just guessing lol got both OD/UD in the front/rear respectively on my wraith though and it really made a difference so I think there should be something similar for the r1 which is a nice kit imo. Maybe junfac will make some gears? |
08-02-2015, 07:13 AM | #34 |
Rock Crawler Join Date: Dec 2014 Location: In the sticks
Posts: 913
| Re: Underdrive for the R1... Finally
I'm sure that they will come out with under/over drive gears now that mine are all done.
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09-29-2015, 06:28 PM | #35 |
I wanna be Dave Join Date: Sep 2012 Location: Victoria, BC
Posts: 2,257
| Re: Underdrive for the R1... Finally
I just finished this underdrive mod. Thanxs very much supermoturd for the idea & explanations. The mesh in the rear axle is absolutely perfect.
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10-23-2015, 03:50 PM | #36 | |
I wanna be Dave Join Date: Jan 2006 Location: Corruptifornia
Posts: 12,107
| Re: Underdrive for the R1... Finally Quote:
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12-20-2015, 06:53 PM | #37 |
Newbie Join Date: Nov 2015 Location: Fairbanks
Posts: 40
| Re: Underdrive for the R1... Finally
I know this is an older thread, but the information and photos remain helpful. I have been looking at an R1 at my local hobby store. It is put together but without electronics. I have been hesitant to jump in for several reasons, including chatter about underdrive. This thread lays that to rest and I will take another hard look at that rig. Thanks, OP, for great information. Mike |
01-04-2016, 10:34 AM | #38 |
Newbie Join Date: Nov 2015 Location: Redding
Posts: 2
| Re: Underdrive for the R1... Finally
I will chime in with my thanks also. I just ordered my R1 kit and will be doing this mod straight outta the box!! |
02-28-2016, 11:17 AM | #39 |
Quarry Creeper Join Date: Nov 2013 Location: Huntsville
Posts: 222
| Re: Underdrive for the R1... Finally
It has been a while since I got on the forum. It just got so quiet around here that I quit visiting. But I'm glad to see that so many of you guys have found my Under-Drive mod useful. It takes a bit of work, but it is well worth it. The R1 is pretty lousy in stock form, but with work, it can be transformed into a formidable crawler. And that is what makes it so much fun.
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02-29-2016, 07:10 PM | #40 |
Pebble Pounder Join Date: Apr 2013 Location: Bonney Lake
Posts: 127
| Re: Underdrive for the R1... Finally
How does this mod affect the longevity of the bearings (or bushings in my case) located in the outer axle portals? Sent from the clouds |
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underdrive |
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