Wobbling roadwheel suspension arms on Taigen/Torro metal Leopard1A6

[keilau]

I am in the process of upgrading my HL Leopard2A6 with a Torro metal lower chassis. I found many features that I like, but the installation is nothing but smooth.

The Torro chassis came with the suspension arms pre-mounted. When I mount the roadwheels, I found the arms wobble a lot. I finish anyway and test drive it in the basement. The driving seems alright, but the straight dash run is not as smooth as I expected.

I had similar arm wobbling problem with the TongDe M60. I solved the problem by replacing the nylon rings with ball bearings on the torsion bar axles. It is now the smoothest running tank I have.

The Torro design is very different. The torsion bar suspension arm axle is a simple plug goes into an oversized hole on the chassis wall. Torro use a rubber O-ring to seal the gap for water proof. No ball bearing is allowed.

Torro_torsionbarplug-3.jpg (17.73 KiB) Viewed 2441 times

Torro_torsionbarplug-2.jpg (16.11 KiB) Viewed 2441 times

Torro_torsionbarplug-1.jpg (13.38 KiB) Viewed 2441 times

Torro_roadwheel_o-ring.jpg (146.43 KiB) Viewed 2441 times

Any suggestion on how to improve or eliminate the suspension arm wobbling?

If you have a Torro tank, any model, do you have the same problem?

[keilau]

Can any Taigen/Torro RC tank owner tell me whether they ever see any wobbling of the torsion bar suspension assembly. Is that possible that I get an defective chassis with oversized holes on it?

I have paint the chassis, but it is only 2 weeks old. Getting warranty service may be difficult since I purchased the parts from Germany.

[Marc780]

...I had similar arm wobbling problem with the TongDe M60. I solved the problem by replacing the nylon rings with ball bearings on the torsion bar axles. It is now the smoothest running tank I have.

Do you have any images of how you installed the ball bearings on the torsion bars on the M60 please? I have one of these TD M-60's too, the metal edition. So unless the manufacturer fixed the problem by now, I'm anticipating issues if I try to actually drive it. I'm not sure how a heavy tank, supported by ill-fitting torsion bars, will drive especially hauling all that heavy metal?

[Herr Dr. Professor]

kielau: I am sorry you had no response to your question about the wobble. I don't know how I missed your question in the first place way last March. I have a number (who's counting?) of Taigen/Torro tanks, mostly with metal suspensions, tracks, etc., in plastic lower hulls, and I have not see the wobble problem. However, I do run tanks gently, slowly, almost always indoors, so my experience is not representative of the broad range of others' uses.