Badlands on half-ups wobble...again

[cryppie]

Got a 2nd set of Rulux half-ups and Badlands because my first set wobbled badly. I figured I had torn the foam inserts when stretching them onto the wheel. So, the 2nd set I added yellow Ofna truggy foam inserts and was very careful mounting them. I cheated and used rubbing alcohol as lube, to make sure I didn't bend up the wheel or tear the foam. It made each wheel about a 2 minute job. Anyway... I then spent another hour trying to get them not to wobble. I tried everything. As I was using the air compressor to dry the rubbing alcohol, I noticed the tire would hold air pretty well. I "aired up" the tires through the vent holes I drilled and it seated the beads evenly. Even after that, I still have a little wobble. Nothing like before, but I'm still not satisfied. I plan to run the tires very fast before I glue them to see if that helps, but I don't have my brushless combo yet, and I took one of the titans apart to see what failed, so I can't. Oh, and it's not a balance issue. Anyone else have a better idea?

EDIT I mount the Badlands on the inner bead for a shorter sidewall. I tried the outer bead on one of the wheels just for S&G and got the same wobble.

[Revo¹]

If you have stock axles, stock carriers, and stock hexes, the wobble is in them, not the wheels/tires.

[cryppie]

This is on a balancer. The wheels track straight, tires don't.

[afterdarkgames]

So the next question is... did you mount them in the inner or the outer position? And which ofna foams did you use? the reason I ask is some are better than others. The 38 series requires no stretching but does require trimming. Also mounting them in the normal bead location lets the tire slide more and requires constant massaging of the tire to keep them from wiggling. I had a similar problem until I baked mine off and reglued them with a set of 38 ofna foams in the inner position on the rims.

[cryppie]

Inner bead with both sets

I used these on the 2nd set:


They are ofna #81106 (medium LPR)

Here is a link:
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXUNE2

I'm not going to glue this set until it is right. So yours mounted fine with no wiggling? I'm about to be 0 for 2.

My only other idea is to run them with the car on a stand before I glue them. Didn't think about trimming the foam. It seemed to fit pretty well, but I'm willing to try anything.

[candy76man]

Maybe you didn't get the tire bead right up to the wheel bead all the way around uniformly? I spent a lot of time making sure of that when I did mine because I knew it would cause an issue like you are having if I didn't.

[Revo¹]

Mount the tire without the foam, mark a spot on the tire and the wheel, then press the bead of the tire in all the way around. If there are any spots that don't seat perfectly, trim the tire until it does. Do this on both sides until both beads are perfect. Then, throw the foam in the tire, put the tire on the wheel lining up the marks you made earlier, make sure the foam is behind the beads, then glue the tires. This results in a much better tire, more round and better balanced.