05-26-2017, 10:18 AM | #1 |
Pebble Pounder Join Date: Mar 2015 Location: PEI Canada
Posts: 156
| Drive shaft pops out
The drive shaft keeps popping out when the truck is under load. I built the frame from scratch. It has a front motor mount. the mount is solid, so I don't think that's the problem. The drive shaft is a stock scx10 jeep wrangler unlimited one, that has been shortened a lot. It is the drive shaft that goes to the transfer case from the transmission. Why does this keep happening? The motor is a Tekin 35T. |
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05-26-2017, 10:21 AM | #2 |
I wanna be Dave Join Date: Nov 2014 Location: West Texas
Posts: 2,654
| Re: Drive shaft pops out
Looks to be to short. The scale shop or locked up rc makes a universal joint that would be much better for your application. 149 r/c worx /scalerfab Team Driver |
05-26-2017, 10:48 AM | #3 | |
Pebble Pounder Join Date: Mar 2015 Location: PEI Canada
Posts: 156
| Re: Drive shaft pops out Quote:
Thanks for your help | |
05-26-2017, 10:52 AM | #4 |
I wanna be Dave Join Date: Nov 2014 Location: West Texas
Posts: 2,654
| Re: Drive shaft pops out
You could use an extended output shaft from hot racing and the locked up rc on 149 r/c worx /scalerfab Team Driver |
05-26-2017, 11:25 AM | #5 |
I wanna be Dave Join Date: Jan 2005 Location: Raleigh-ish vicinity
Posts: 3,846
| Re: Drive shaft pops out
I use one of these between the trans and t-case in my Ascender, wrecked a few plastic shafts before switching to the steel one and no more problems. It can also be cut down if needed. Fumi HD Universal Drive Shaft 65mm-83mm for Tractor Truck - 23210bk (BLACK) | eBay |
05-26-2017, 11:40 AM | #6 |
Rock Stacker Join Date: Jan 2017 Location: Kennesaw
Posts: 50
| Re: Drive shaft pops out
Since it shouldn't need to slide to expand or contract (it appears to be in a fixed location), why not just put it together, drill through it and pin it? Or glue/epoxy it for that matter.
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05-26-2017, 12:03 PM | #7 |
Pebble Pounder Join Date: Mar 2015 Location: PEI Canada
Posts: 156
| Re: Drive shaft pops out |
06-27-2017, 09:27 AM | #8 |
Pebble Pounder Join Date: Mar 2015 Location: PEI Canada
Posts: 156
| Re: Drive shaft pops out
Hey guys, so I put a screw in the drive shaft to help it from coming apart. Then the driveshaft came apart again and now I don't think I can use it any more. What should I do? |
06-27-2017, 10:17 AM | #9 |
RCC Addict Join Date: Nov 2014 Location: Nowhere
Posts: 1,326
| Re: Drive shaft pops out
Well clearly that driveshaft is blown to hell so just get a new one. Now you say "why does this keep happening", is this not the first shaft that's broken there?
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06-27-2017, 05:54 PM | #10 |
Quarry Creeper Join Date: Jan 2012 Location: winder, ga
Posts: 203
| Re: Drive shaft pops out
Need to get the trans and t-case in a strait line. You dont have enough man part there to wiggle. |
06-27-2017, 06:01 PM | #11 |
I wanna be Dave Join Date: Apr 2013 Location: Streamwood, IL
Posts: 2,442
| Re: Drive shaft pops out
Get rid of the cheap plastic driveshaft and get an MIP or Junfac
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06-28-2017, 01:02 PM | #12 |
Pebble Pounder Join Date: Mar 2015 Location: PEI Canada
Posts: 156
| Re: Drive shaft pops out |
06-28-2017, 01:20 PM | #13 |
RCC Addict Join Date: May 2015 Location: Price Twp.
Posts: 1,291
| Re: Drive shaft pops out
Jb weld it together with shrink wrap tubing on top to keep it together and you will never have an issue. Just took another look at your pictures. What kind of half ass forward mount do you have going on there? Did you mount that transmission at an angle to the transfercase? If you did, well duh you are putting a lateral force on top of the rotational force. Of course it is ripping apart. Once you get a solid shaft in there you are going to wipe out the bearings then trash the transmission gear. Get the tranmy amd transfer case on the same plane, then you can sort out your drive shaft issues. Last edited by Ditchrat; 06-28-2017 at 01:29 PM. |
06-28-2017, 01:44 PM | #14 | |
Pebble Pounder Join Date: Mar 2015 Location: PEI Canada
Posts: 156
| Re: Drive shaft pops out Quote:
So I should get the transmission and transfer case level with each other? Thx for the help As you can see the drive shaft is not in good shape. LOL Last edited by bigwig; 06-28-2017 at 01:56 PM. | |
06-28-2017, 01:58 PM | #15 | |
RCC Addict Join Date: May 2015 Location: Price Twp.
Posts: 1,291
| Re: Drive shaft pops out Quote:
I am assuming that you did that because you mounted the servo first and then had to deal with space you had left. Short of a front end rebuild, you need to see if you can straighten that thing out. If you do that flip the servo off its side and place it horn side down. That will give you room to move the motor forward. You should be able to get it square and get a little bit longer shaft. check out the GCM racing forward mount for some ideas. Last edited by Ditchrat; 06-28-2017 at 02:01 PM. | |
06-28-2017, 01:59 PM | #16 | |
RCC Addict Join Date: Nov 2014 Location: Nowhere
Posts: 1,326
| Re: Drive shaft pops out Quote:
-- So, while you might not have enough spline engagement on the center shaft, you absolutely need to get the input/output yoke parallel to each other in the meantime. | |
08-01-2017, 07:20 AM | #17 |
I wanna be Dave Join Date: Jun 2016 Location: Deep in the Everglades
Posts: 5,816
| Re: Drive shaft pops out
Ignore the barking, you're asking and trying. RC isn't too tricky, sometimes just looking , fiddling around will help you learn. Don't be afraid to try and ask , ALL of us were rookies once Hang up and Drive |
08-01-2017, 07:22 AM | #18 |
Pebble Pounder Join Date: Mar 2015 Location: PEI Canada
Posts: 156
| Re: Drive shaft pops out
Hey guys I fixed the driveshaft angle, and got a new driveshaft. It broke again. Can you please tell me if I did it at the correct angle? Do you think it was my fault for designing it wrong or the part being weak. Thanks for the help. |
08-01-2017, 07:55 AM | #19 |
Quarry Creeper Join Date: Oct 2012 Location: Oregon
Posts: 371
| Re: Drive shaft pops out
This time it broke at the yoke, you could get a metal driveshaft yoke to beef that up. Something like this could give you a fair bit of material to work with. Axial 90-112mm 105-140mm Nylon Drive Shafts w/ Metal Yokes 1/10 Scale AX10 SCX10 | eBay Another option with your spacing might be a Vaterra Twin hammers front center driveshaft although that might be too short. |
08-01-2017, 09:19 AM | #20 | |
Pebble Pounder Join Date: Mar 2015 Location: PEI Canada
Posts: 156
| Re: Drive shaft pops out Quote:
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