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.

https://www.hobbysquawk.com/forum/rc-cars-tanks-trucks-and-more/rc-tanks/419315-torro-1-16-scale-german-leopard-2a6-metal-chassis

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.


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.

[sclui56]

With the torsion rods providing tension from the inside the hull and the O-rings on the outside, the shafts where the assembled road wheels with arms have close to zero play when screwed on. The O-rings essentially limit the slop. I just looked at both of my Taigen Leo's and the road wheels are quite aligned and free of side-to-side play. You may want to experiment with different O-rings, or you could try getting different thickness brass tubes and sleeve the shafts. I didn't see any variation between my Leo's and they were purchased 2-3 years apart. I also haven't seen any sort of manufacturing defects in the 8 Taigen/Toro tanks, design flaws perhaps, but the manufacturing has always been consistent.

I followed your transition a bit out of curiosity because I had an extra hull couple years back and was going to build out with HL electronics and upper, scratched that idea as I wasn't convinced the mounting points would match up and ended up getting a complete Torro upper to finish the build.