Hot bodies 1/8 diffs - Page 25 - RC-Monster Forums

RC-Monster Mike · 11.15.2011, 02:02 PM

Dual servos is accomplished with linkage - the bellcrank setup is largely the same as stock so it is no problem to use dual servos(although dual servos is not necessary - 1 good servo is the ideal setup).

cmac · 11.21.2011, 08:54 PM

Thanks Mike, as soon as I can get my hands on a UE servo saver I will install and I'm sure it will fix the problem. On to my next build. I just got my pair of Hot bodies 43t 8028 ring gears and that completes my parts list. I can now start my build. I will not do another complete build thread, but I will post pictures when I can.

cmac · 11.24.2011, 08:48 AM

Well I just bought a gen 4 UE servo saver and can't wait to install it

George16 · 11.24.2011, 08:53 AM

Congrats, those are to come by. How much did you pay for it if you don't mind me asking?

cmac · 11.24.2011, 10:47 AM

$95.00 US. I also got the spring pack from UE $12.00 on the way.
http://www.ebay.com/itm/160688343760...84.m1439.l2649

cmac · 12.04.2011, 03:47 PM

I have not heard back from UE on my spring package, is this common procedure? They took my money though. This is the first time I have ordered from them directly.

George16 · 12.04.2011, 04:00 PM

Yup, that's common. There is no more email or anything after Sam left the place and let Robin do everything. You'll get it though.

cmac · 12.04.2011, 08:40 PM

Quote:

Originally Posted by George16

Yup, that's common. There is no more email or anything after Sam left the place and let Robin do everything. You'll get it though.

Thanks that's good to know.

cmac · 12:56 PM

Ok, I just got the time to swap out the steering linkage for the UE (gen 4) servo saver,and took the truck out for a spin. I still have the severe pull to the right. I now don't think it's the saver that is the problem. I am now thinking it's the 300k diff oil and locked slipper. At first I tried to run the truck with two servos, but I am now going to give in and just go with one. I know I'm stubborn, but when all the senior members in here keep saying just use one.........( I can here you guys saying I told you so). I just think all the torque is forcing the truck to the right under full acceleration. I'm really glad that I got the UE servo saver it just really looks great and you can tell what craftsmanship when into the design. So, guys what diff oil should I try to use? Remember I still want to be able to pop the front wheels up off the ground at will.
Thanks,
Mike.

coolhandcountry · 12.10.2011, 01:17 PM

Since you are running a thick diff oil, have you thought about the tires.
Is one side growing more then another?
Does it pull to one side at a low speed or just high speed?

JERRY2KONE · **Unfortunately -** 12.10.2011, 01:54 PM

Unfortunately a lot of this hobby is trial and error. Even with the best advice from some of the most experienced hobbiests you have to try different things to find what will work best for your vehicle and your style of driving. With your severe pull under acceleration I would try going on the low end of things and work your way up. Losen your slipper just a tad, and put some low weight diff oil in your diffs and see if it all goes away. Even though the advice given to check your steering linkage did not resolve your problem it did give you a better look into exactly how well or not so well your steering was working. The UE Gen4 servo saver is the best one ever made for sure, and you are lucky to have one for your truck. It sounds like you have worked your way pretty much through all of the possible problems that your steering could have been giving you.

So I would go back to what I started telling you a while back. Your getting torque steer from your drivetrain because of the power your truck has in it. It could be a fault in your setup (sticky bearing, of bad toe adjustment, Etc), but I really do believe that you just have to play with your diffs until you get it where you want it to be. Are your tires taped and balanced? Are you using beadlock rims or just gluing your tires? If you have your tires taped and you are not seeing any ballooning, than that leaves your drivetrain itself as your culprit.

I think I remember asking you to try disconnecting your front driveshaft and just running it with rear drive and see what happens. Then try running it with just front wheel drive and see how that works out. That will give you a good idea how the front and rear wheel drive works independently so you can figure out if further adjustment is needed to run them together.

cmac · 12.10.2011, 02:50 PM

Quote:

Originally Posted by coolhandcountry

Since you are running a thick diff oil, have you thought about the tires.
Is one side growing more then another?
Does it pull to one side at a low speed or just high speed?

No it happens the moment I pull on the throttle. I have the tires double gorilla taped so they don't balloon at all.

coolhandcountry · 12.10.2011, 03:07 PM

Can you switch sides with tires for a test run and see what happens?

cmac · 12.10.2011, 08:03 PM

I'm willing to give anything a try.

cmac · 12.11.2011, 10:25 AM

I don't know why I didn't think of this but my tires are directional. I can't swap them for the other side.