The video review (Spanish)
The Traxxas UDR won me over visually: its suspension and movement were particularly appealing. I bought one used and dismantled, repaired it and drove it. Even so, I eventually sold it.
A Purchase That Started on the Workbench
The car needed transmission repair. Its previous owner explained that he had been unable to reassemble it.
I ordered parts, serviced the differentials and adapted the power connection to my equipment. My experience does not begin with a brand-new, boxed UDR.
Access Was Not Convenient for Me
The amount of dismantling to reach certain areas weighed on me. It felt like considerable work to service small transmission parts.
I give neither a measured repair time nor a list of faults every car will suffer. This explains why its maintenance felt less rewarding than that of other cars I used.
Its Handling Was Not What I Wanted
Repaired, it worked and I enjoyed watching it move. At the circuit, however, I struggled with corners and inertia and could not find the feel I knew from buggies.
The locked rear in my configuration also surprised me. I wanted conventional differential tuning and did not want further purchases to change its character.
That is a preference, rather than a conclusion that UDR architecture is faulty because it behaves differently.
Shared Driving Mattered Too
I increasingly enjoy meeting enthusiasts and driving similar-handling cars together. With the UDR I struggled to find that rhythm and did not want the required learning commitment.
I also could not obtain the throttle-based airborne corrections I wanted. I describe attempts with 4S and 6S without an instrumental configuration comparison.
Why I Sold It
I still liked its looks but preferred space and budget for cars I used more. I do not regret selling: it was about my use, rather than nobody being able to enjoy the model.
The next stage of my circuit interest appears in my Serpent GTE. The UDR page retains this independent experience.