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12-26-2018, 02:47 PM | #1 |
Rock Stacker Join Date: Jul 2006 Location: moab
Posts: 95
| servo relocation problem
I recently installed a yeah racing bumper/servo mount on my sport. I figured the added weight up front would be a good thing during climbs. My issue however is that after mounting the servo up front and flipping the servo horn 180 degrees from stock the drag link and tie rod hit during full suspension compression. Also the drag link rubs on the frame a bit. Has anyone else relocated their steering servo to one of these weighted bumper mounts and if so have you a solution to eliminate any rubbing while still using a full 45 degrees of throw? I'll try and post a few pics later.
Last edited by sid lives; 12-27-2018 at 12:04 PM. |
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12-26-2018, 05:38 PM | #2 |
RCC Addict Join Date: Nov 2017 Location: 3rd rock pile on the right
Posts: 1,791
| Re: servo relocation problem
I had that issue on my scx10.2 wen i relocated with the servo/bumper mount. I used a rodend ball to drop the draglink just a tad n it helped alot. I know it 2 diff brands of truck, but i think itll help your issue Sent from my SM-J327VPP using Tapatalk |
12-27-2018, 12:08 PM | #3 |
Rock Stacker Join Date: Jul 2006 Location: moab
Posts: 95
| Re: servo relocation problem Unfortunately if I drop the draglink it hits the tierod earlier in the suspension droop and I cant raise it because it's hitting the frame rail. I'm starting to think my only option is to mount the servo back in it's original location which I really don't want to do. |
12-27-2018, 04:56 PM | #4 |
Rock Crawler Join Date: Mar 2013 Location: Waukesha
Posts: 635
| Re: servo relocation problem
Might need a longer servo arm. To put the drag link back above the steering link. It’s way forward causing it to change the angle of throw. Might at least get it away from hitting frame. Sent from my iPhone using Tapatalk |
12-27-2018, 06:22 PM | #5 |
Rock Stacker Join Date: Jul 2006 Location: moab
Posts: 95
| Re: servo relocation problem If I run a longer servo horn the two links hit each other when the suspension compresses to the point of powering out my servo ( hitec 7950) |
12-27-2018, 06:42 PM | #6 |
I wanna be Dave Join Date: Jun 2016 Location: Austin
Posts: 6,005
| Re: servo relocation problem
Maybe the LockedUpRC one is a better choice? TRX4 Aluminum Servo Mount - replaces Traxxas 8239 It's aluminum for stiffness, which is what is really needed- weight would be better added on the axles(c-hubs,portal covers, etc)for lower C.O.G. |
12-28-2018, 01:05 PM | #7 | |
Rock Stacker Join Date: Jul 2006 Location: moab
Posts: 95
| Re: servo relocation problem Quote:
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12-28-2018, 01:15 PM | #8 |
RCC Addict Join Date: Nov 2017 Location: Austin Texas
Posts: 1,615
| Re: servo relocation problem
I also thought I read that although giving you a weight advantage while driving straight up/ onto obstacles... that the benefit might possibly be negated in off-camber/ side-hill situations. I'm guessing due to it being relatively high up on the chassis... idk.
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12-28-2018, 09:58 PM | #9 |
RCC Addict Join Date: Aug 2017 Location: Fredericksburg, VA
Posts: 1,912
| Re: servo relocation problem
Just curious if you could lower the tie rod to below the lower mount that would allow you to mount the outboard end of the drag link in between the mounts where the tie rod formerly was. Just a thought.
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12-28-2018, 10:29 PM | #10 | |
Rock Stacker Join Date: Jul 2006 Location: moab
Posts: 95
| Re: servo relocation problem Quote:
I guess my big take away from this is this mount was poorly vetted before being produced and should be avoided if you plan on using the servo mount and your suspension at the same time. | |
12-29-2018, 09:12 AM | #11 |
I wanna be Dave Join Date: Oct 2012 Location: Medina
Posts: 2,263
| Re: servo relocation problem
That's a bummer man. Maybe you could clearance the c-channel of the underside of the frame a tiny bit? Anyway, drag link alignment, length, geometry, etc all being critical on a CMS set up, I plan on sticking with the original servo location that Traxxas engineered. Companies like Traxxas do a lot of R&D on this sort of thing and for something critical like this, I'm not going to second guess them on a whim. You can add weight where needed in far better locations IMHO. I've looked at a number of aluminum, direct replacement servo mounts at this point, particularly since I just threw a 400 ounce capable servo in the Sporto. Having had great success with LockedUpRC products, I plan on purchasing theirs.
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