Welcome to The RC Doctor, an area of CompetitionX dedicated to helping you diagnose and repair any RC car or truck problems. With over 20 years of RC experience, The RC Doctor provides expert advice on nearly all subjects related to RC cars and trucks. We can help you troubleshoot everything from faulty electronics to broken chassis/suspension parts and point you in the right direction on how to get it fixed. If you have an ailing RC, fill out the Ask The RC Doctor form on the right and let us help you diagnose your problem!

Recent Surgeries

Team Associated B64 Club Racer Build – Part 11 – Electronics

Team Associated B64 Club Racer Build - Part 11 - Electronics

The Build – Part 11 There is plenty of room on the Team Associated B64 Club Racer chassis for electronics, especially the ones included with the kit. We have the Reedy 600Z ESC, Sonic 13.5T FT (Fixed-Timing) motor and Reedy Zappers 4800mAh shorty LiPo battery – all great components for this car! I would suggest, at this time, turning everything …

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Team Associated B64 Club Racer Build – Part 10 – Shocks

Team Associated B64 Club Racer Build - Part 10 - Shocks

The Build – Part 10 Large, V2 12mm Big Bore threaded aluminum shocks are included with the Team Associated B64 Club Racer. These shocks feature 3mm shafts and super smooth X-rings for excellent rough-terraing handling. Other than the tires, the shocks are probably the most crucial setup piece of the puzzle. This step was a little longer than most but …

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Team Associated B64 Club Racer Build – Part 9 – Turnbuckles

Team Associated B64 Club Racer Build - Part 9 - Turnbuckles

The Build – Part 9 Team Associated’s B64 comes with shiny, steel turnbuckles. While they’re not titanium, I’m certainly glad they’re not the black steel ones! Pretty easy, yes? The lengths supplied by AE in the manual appear to be spot on, but you can make any adjustments during the final prep right before we hit the track. Team Associated …

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Team Associated B64 Club Racer Build – Part 8 – Rear Suspension

Team Associated B64 Club Racer Build - Part 8 - Rear Suspension

The Build – Part 8 The rear suspension on the Team Associated B64 is the similar to the front but includes an anti-roll bar. The build should be almost identical other than that. Great job – almost done! Only a few more key elements left and you’ll be on the track with your B64 in no time! Team Associated B64 …

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Team Associated B64 Club Racer Build – Part 7 – Rear Bulkhead

Team Associated B64 Club Racer Build - Part 7 - Rear Bulkhead

The Build – Part 7 The rear bulkhead build on the Team Associated B64 is very similar to the front; there are only a few minor differences that separate them. At this time, you may just want to give the drivetrain a spin to make sure there is no binding. Other than that, you’re all set to move on! Team …

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Team Associated B64 Club Racer Build – Part 6 – Servo

Team Associated B64 Club Racer Build - Part 6 - Servo

The Build – Part 6 You’ll be happy to hear that you won’t need to purchase electronics for the Team Associated B64 Club Racer. For steering duties, the A-Team has included a Reedy 0712MG servo. It features a full metal geartrain, digital operation and some decent specs; a speed of .12 and a torque rating of 246oz! Servo install complete! …

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Team Associated B64 Club Racer Build – Part 5 – Front Suspension

Team Associated B64 Club Racer Build - Part 5 - Front Suspension

The Build – Part 5 The Team Associated B64 front suspension has been given a huge facelift over the previous 4-series buggy, using thick suspension arms, aluminum caster blocks and large ball ends to heighten durability. Nice job! If you haven’t done so yet, complete the other side and then we’re ready to move on. Team Associated B64 Club Racer …

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Team Associated B64 Club Racer Build – Part 3 – Steering

Team Associated B64 Club Racer Build - Part 3 - Steering

The Build – Part 3 The Team Associated B64 Club Racer uses a ball-bearing equipped dual bellcrank steering system. It’s super smooth and very precise, however it doesn’t come with a servo saver. This is fine, however, as the Reedy 0712MG uses a full metal-gear geartrain and shouldn’t need one. Before moving on, double check the steering to make sure …

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Team Associated B64 Club Racer Build – Part 2 – Chassis

Team Associated B64 Club Racer Build - Chassis

The Build – Part 2 The next couple of steps have us prep the chassis on the Team Associated B64 Club Racer. That was a few easy steps for prep – let’s move on to the steering. Team Associated B64 Club Racer Build – Opening Page Team Associated B64 Club Racer Build – Part 1 – Differentials Team Associated B64 …

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Team Associated B64 Club Racer Build – Part 1 – Differentials

Team Associated B64 Club Racer Build - Differentials

The Build – Part 1 The Team Associated B64 Club Racer comes equipped with 3 planetary gear diffs; front, middle and center. It also comes with large bottles of diff fluid to fill them; 10K and 200K. Now that you’re done with the diffs, take a few moments to clean off any excess fluid from the outside. Set them aside …

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Team Associated B64 Club Racer Build – Part 4 – Front Bulkhead

Team Associated B64 Club Racer Build - Part 4 - Front Bulkhead

The Build – Part 4 The front gearbox on the Team Associated B64 Club Racer seems pretty stout. Huge bearings, thick plastic and 4mm thick graphite shock towers are all standard equipment. There ya have it – the front gearbox installed and ready to go. Next up is the front suspension! Team Associated B64 Club Racer Build – Opening Page …

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Ansmann Royal Flash Has the Backwards Blues

Ansmann Royal Flash Has the Backwards Blues

Question: Hey Doc- I have an Ansmann Racing Royal Flash – when I switch the car on, motor starts to turn backwards without any throttle being used. I can adjust the throttle trim to stop if from moving but it still continues to buzz. Can you please advise what the issue may be? Steve Answer: Hi Steve, It sounds like …

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B4 Buggy Has a Slippery Rear End

B4 Buggy Has a Slippery Rear End

Question: RC Doc- I’ve been driving my Team Associated B4.2 Buggy for a while, self-teaching myself mechanics and such. What I can’t figure out is how to keep the back end from spinning out and fishtailing through the corners. I assume it has something to do with adjusting the cambers in the rear, maybe increase the negative pitch? I’ve never …

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Bad Bugs Buggy Steering

Bad Bugs Buggy Steering

Question: Doctor- The steering in my HobbyKing Bad Bug is pretty sloppy. I watched an online review that stated I need to tighten the steering servo and use a little bit of threadlock to keep it tight, but I’m not sure where to do that (it was hard to see in the review). Do you have any ideas where I …

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