Scott Marshall
New Member
I recently acquired a very nice and gently used T-Maxx 3.3 with a big box of parts. The truck runs fine, but the u-joints were a tad sloppy, and it had Traxxas 5451R halfshafts and an (almost) complete RPM chassis kit still in the packages with it. I rebuilt the stock driveshafts with the included ujoint kits, installed the True-Track rear end kit and the rear half shafts. All this fit the chassis fine, and I ran it while waiting for the missing RPM front control arm and Traxxas 4949R steel center shaft kit. It runs and handles nicely, but still needs a few bugs work out.
The parts showed up this Am, so I just started to complete the "freshening upgrading" and discovered the 4949R Center shaft kit is not only too short, but has no way to drive the brake rotor. In addition, it calls for 2 pieces .5mm teflon coated washer to be installed on each pinion and if you do so, the CV joint pin hole won't line up. (you CAN make it work with 1 shim).
The back of the shaft kit says "Driveshafts, center (steel constant-velocity) front (1)/ rear (1) (assembled w/inner and outer dust boots, for T-Maxx w/optidrive transmission"
I know the T-Maxx is an old design, and has probably been thru many changes, and I vaguely recall reading something about an extended chassis version, and I know there is a (popular) no reverse model. That would explain the length problem, but not the brake rotor issue. The rotor on this model floats on 2 pins mounted on the front transfer case/transmission yoke.
The kit comes with a blue anodized hollowed out hex that looks similar to the wheel drivers. I'm thinking some models use a hex drive brake disc?
I understand these have been made for 20+ years now, but I have no idea how old this truck is, there are no identifiable model numbers except a tag on the chassis (KA2246-R00) and one one on the transmission (C15001943). It has Optidrive, reverse, a 58t spur, 22t clutch, Steering servo is a 2055, Shifter servo is a 2060, and the Steering has been replaced with a Savox SA-1256TG if that helps identify it.
Sorry about the long post, just trying to make it easy to help me. I've got a cool $32 paperweight right now....
I am probably overlooking a obvious issue, but am currently at a loss. I'm thinking it's a mis-marked part, or maybe I have a Revo with a T-Maxx body or something weird like that, but it's most probably something I've done wrong or missed.
Thanks in advance for any guidance you can offer.
The parts showed up this Am, so I just started to complete the "freshening upgrading" and discovered the 4949R Center shaft kit is not only too short, but has no way to drive the brake rotor. In addition, it calls for 2 pieces .5mm teflon coated washer to be installed on each pinion and if you do so, the CV joint pin hole won't line up. (you CAN make it work with 1 shim).
The back of the shaft kit says "Driveshafts, center (steel constant-velocity) front (1)/ rear (1) (assembled w/inner and outer dust boots, for T-Maxx w/optidrive transmission"
I know the T-Maxx is an old design, and has probably been thru many changes, and I vaguely recall reading something about an extended chassis version, and I know there is a (popular) no reverse model. That would explain the length problem, but not the brake rotor issue. The rotor on this model floats on 2 pins mounted on the front transfer case/transmission yoke.
The kit comes with a blue anodized hollowed out hex that looks similar to the wheel drivers. I'm thinking some models use a hex drive brake disc?
I understand these have been made for 20+ years now, but I have no idea how old this truck is, there are no identifiable model numbers except a tag on the chassis (KA2246-R00) and one one on the transmission (C15001943). It has Optidrive, reverse, a 58t spur, 22t clutch, Steering servo is a 2055, Shifter servo is a 2060, and the Steering has been replaced with a Savox SA-1256TG if that helps identify it.
Sorry about the long post, just trying to make it easy to help me. I've got a cool $32 paperweight right now....
I am probably overlooking a obvious issue, but am currently at a loss. I'm thinking it's a mis-marked part, or maybe I have a Revo with a T-Maxx body or something weird like that, but it's most probably something I've done wrong or missed.
Thanks in advance for any guidance you can offer.