Hey guys, I had a major problem today with my TB-03D.

The metal pin that goes in my Tamiya Steel CVDs snapped in half and got jammed in my hubs. The one that is tightened down by the hex screw that connects the dogbone to the thread drive shaft that the wheel bolts onto.

I fixed replaced the the pin. I thought it was caused by stress I just stuck an EZrun into my car.

I picked up the car and and tested out the car and the car runs smooth until I test the steering. Everything runs smooths while turning except the left side looking at the front of the car.

The wheels vibrates like crazy and you can feels the vibrations byt he sound it makes in your ear flabbing around at throttle.If the car steering is neutral(going straight) then it's fine. It only vibrates wildly when I turn half way down.

I checked everything. Everything seems fine. My dog bones seems a bit rough when t's turn. DOesn't seem to be caught on anything though.

My setup:
-Tamiya Direct Coupling Front/Rear
-Square RC Center One Way Shaft



UPDATE: I reinstalled everything. Both wheels vibrate when I turn past halfway to the stopper on the hub. And then it vibrates wildly. Never did this before. only thing I did different to it was install Tamiya Direct Coupling.

I noticed this on the spool or direct coupling that was on my TA05 race car before I checked for what I will try and explain below!

You need to make sure that the dog bone part of the universals are running in the same plane i.e. they must not be running 90 degrees apart. This is kind of hard to explain but when looking at the front of the chassis from the front bumper area look at the dog bones either side where they meet the spool. The pin part of the dog bone of the one universal must be exactly the same as the one on the other side. Hope you are able to understand what I have written!

That's funny. I just started doing that yesterday on my own accord. The dogbones pins were not in the same slot as each other and I thought it might cause varying degrees of torque. It only does it when I turn halfway past my steering full radius. I am replacing the dogbones and CVDs. The drive pin snapped in half and tore everything in the hub. I am replacing my bearings as well. Still sounds familiar?

UPDATE: The CVDs parallel are in the same slot/plane. The dogbone pins form them are in the same slot on the direct coupling.

It still vibrates/wobbles wildly. I am replacing everything. CVDs, Bearings, Hub(pin destroyed one). My CVDs don't seem to be as smooth for some reason they are alls scratched up from the broken pin.

Any other help would be much appreciated.<br type="_moz" />

I tried everything. Completely full new set of CVDs with new universal joints and pins, New C Hubs, New Bearings.

I tried 44mm Swing shafts, I am about to try my 42mm swing shafts. Hopefully the wheels will stop vibrating wildly when I turn. Hopefully. They don't seem to do it when the wheels are off though. WHen the wheels are off they "seem" to be normal I can full throttle nothing vibrates.

Here it goes. :/

Update: So tested the 42mm. Same thing. With the wheels off it's fine. Works great. I still have the rotor hubs on too so there is rotating weight when I tested it with the wheels off.

So I thought there was something wrong with the wheels. Misshapen, too much dirt in the wheels causing it to be off balance, weight difference or warping basically. I stuck on HPI rims with no tires and it's started vibrating like crazy again as soon as I started turning on my radio. It's starts half way down on the steering radius when I turn to test it. It runs smooth when it's running straight.

<span class="Apple-style-span" style="font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13px; ">http://www.youtube.com/watch?v=vFcnOUJSX64

As you can see in the video, it runs fine straight. hen i turn it goes nuts.</span><br type="_moz" />