New UDR user

[deeph46]

Hi,

New UDR user here..
I have recently bought a UDR. I can't believe how detail the truck is, over the SBR truck
This truck is almost the same compared to 5B (length wise).
I noticed rear shock is little bit too soft IMHO. I thing I will change the rear shock oil before I run it. Does anyone know what weight is the stock rear shock oil? But actually, I don't know exactly which shock should I change the oil of the dual rear shocks setup

I'm also interested with the Traxxas led light set with controller but noticed all the light bar housings are plastic. What do you do to protect the light bar from crash (especially the two's on the front)?

deeph

[slash2018]

I would run it first to see how you like it, it comes with 60w in the shocks. It seems like they come with zero preload front and rear so I’d try adjusting them first. That’s all Iv done and I think it works great with stock oil. I did rebuild all of them and used slime on the seals and they still leak, that’s my only complaint.


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[FlyingDutchman]

I ran mine a few time to see what I needed to do......I also changed shock oil to 80wt.....I like a firm ride......and went open diff to take away the roll overs.

[TraxxasTyro]

The manual says 60w rear, 30w front. I currently have 70w/40w with a variable valve setup in front. Basically, I want less dampening on rebound. Doing a lot of testing with Cyconxc whoops, GoPro and slo-mo. Once I get it dialed in, I'll move to the rear. Who knows what the oil weight will be in the end. Just havin' fun!

[ben1272]

I cant say for sure how the lights will last over the long run, but they do seem to be positioned for decent protection inside the chassis cage. Also, I have on a couple of occasions stupidly smashed my UDR head first into the curb at a pretty good rate of speed, and the front bumpers protected the LEDs from any damage. They still worked electrically too.

I imagine Traxxas tested their ruggedness a bit before releasing them for sale.

[TraxxasTyro]

I imagine Traxxas tested their ruggedness a bit before releasing them for sale

It's a certainty. I've often thought that the "weak" plastic bits everyone complains about are strategically designed to break or absorb impact. Might think twice before replacing stuff with aluminum bling... just sayin'.

[deeph46]

Thanks for all your info. I will try to run stock oil first and play with the preload then. I like more height on the rear when running. I saw many videos rear will sunk when run.

Anyway, I want to upgrade my front lower arms but anyone know where I can get the exact lower arm design that UDR used but in aluminum? I saw GPM but it just straight arm.

[deeph46]

Has anyone tried this arms?
Like the look!

[deeph46]

Made a window mesh..

[deeph46]

Tried the arms from the link above. Haven't installed yet. But the ball end feels right, no play side to side. Happy with the looks, just what I expected.

Without lamp


With lamp..

[Hendrixghost]

That's my problem with the udr on my track. The whoop section. Wants to throw the *** end over. Have u done ant further testing? Interested to see what u ended up doing.

[deeph46]

Which "whoop section" you referred to?

I have installed it but didn't run it yet.

[FlyingDutchman]

Which "whoop section" you referred to?

I have installed it but didn't run it yet.

Are you running this like a stadium truck.....like a Trophy truck....or a pro-scale racer?

[deeph46]

Just a basher, maybe tends to run like a Trophy Truck. Just love to see how the shocks play.

[Hookedup]

I ran mine a few time to see what I needed to do......I also changed shock oil to 80wt.....I like a firm ride......and went open diff to take away the roll overs.

Care to elaborate on the performance before and after w the open diff? I’ve become obsessed with buying this truck but the flipping has made me a bit gun shy... I looked up the parts and it’s not expensive to do.. please tell me more.. and perhaps how long it took to do

Thanks

Chris

[ben1272]

I've learned to pretty well manage the flipping tendency with better throttle control. You can gun it to force tires to break free and then slide/drift and avoid those flips. Except on asphalt.....flippy city. If I were going to drive on asphalt, I'd find an agreeable tire that breaks free, or else add the diff. Maybe lower it a bit too.

It is an awesome truck. I dont think you'd be disappointed while you were overcoming your gun-shyness...

[FlyingDutchman]

Care to elaborate on the performance before and after w the open diff? I’ve become obsessed with buying this truck but the flipping has made me a bit gun shy... I looked up the parts and it’s not expensive to do.. please tell me more.. and perhaps how long it took to do

Thanks

Chris

Before the open diff...it would roll on every turn....and ran hot....now with open diff...runs cooler and quieter.....big difference in handling.