I know a bunch of good TXT posts have popped up recently from @Mad Ax, @BloodClod, and @Bertros, but I didn't want to sidetrack those threads with these questions.
Now I hadn't actually planned to own a TXT-1. This past year I got back into the hobby and kinda half-figured eventually I might end up with an Agrios and do the big wheel swap etc. But @Evoman's showroom popped up in a search leading me to keep an eye out on eBay. By some random chance, shortly thereafter a TXT-1 in good condition turned up with a totally reasonable buy-it-now price. Just over a week later it's on my doorstep.
She's in a pretty good shape outside of the expected scrapes on the undercarriage. Appears to be a near stock build with bushings and original can motors. Came with a TEU-106BK ESC and a generic servo on the front steering. From the tape residue on the plates I believe that ESC is an upgrade from the original mechanical speed control. Before starting a rebuild I popped in a FlySky receiver and took it out for a drive around the yard. Which brings me to my first question:
1) It's crazy loud. Like screaming child loud. No way I can drive this around the neighborhood on a regular basis, especially with everybody working from home. I don't want to be that guy. (We already have a dude that drives his 4-wheeler around his backyard in small circles for *hours* , can't be that dude.). From reading forum posts it sounds like these Juggernaut/TXT/etc gearboxes are just noisy in general, but I wondered if anyone had tips to quiet that down. I'm planning on:
Single brushless motor in place of the twin brushed setup. The motor I have on hand is a Tekin 412, enclosed for water-resistance so I'm hoping that may cut down on the noise a bit.
Full ball bearings (rubber shielded)
Non-Tamiya ESC - hoping this will reduce the whine at low speeds.
Check pinion mesh - have not procured a replacement pinion yet.
2) Suspension. The previous owner has the right, rear cantilever arm set about 1cm longer than the left. I believe this is to add pre-load to offset the torque-twist. For general bashing about the yard, does it make more sense to convert it over to standard upright shocks? I was toying with the idea of cantilevered up-front for more articulation on approach and upright in the rear to resist twist. Any thoughts on that or other setups?
3) Steering. I wonder if this was fairly disappointing build for the previous owner. The steering is very mushy. The servo saver is quite soft, absorbing all of the turn when the vehicle is at rest. Combine that with only front steering and the vehicle takes a lot of back-and-forth driving for tight turns.
Any suggestions on how strong the servos need to be to turn these Clod-sized wheels at rest?
Is a servo saver practical on these sized trucks? Is there a better option than the supplied kit version?
4) Wheels & Tires. The kit wheels are in decent shape, just a small chip on one rim that doesn't appear to compromise the wheel. I didn't realize how hard it would be to find spare TXT-1 wheels.
My understanding is that Clod wheels fit, but that they're more fragile. Is this accurate?
Are the proline tribute wheels a decent alternative? any others stand out as superior?
Of all of the above, it's really the noise issue that has me most worried. I don't expect a silent belt-drive etc, but I've got to get it damped a bit if it's going to be a regular runner.
Thanks for reading and in advance for any suggestions. Here she is with wheels remounted (please excuse the "covid19-spare-bedroom-buildspace" in the background)