The Kyosho Optima dog bone shaft is 68mm. What is going to happen if I fit in a 70mm replacement? Even though I managed to fit it in, shock absorption movement of the arm became jagged and harsh. So I decided to remove a little bit of thickness on both ends of the 70mm shaft. […]
Month: March 2020
Servo saver
The whole point of using a servo saver is to protect the servo from gear breakage during a crash. The C shape plastic of the saver takes the hit and gets cracked. The problem is that if it is too soft, the servo may have a hard time centering back after a steer. Pro racer […]
Calculating gearbox/transmission ratio for belt drive 4WD
On a typical belt driven 4WD with its motor interacting with the center gear, this is how you come up with a gearbox/transmission ratio: First you divide the center gear (which essentially serves as a spur) by the motor pinion. This becomes the answer for 1. Then you divide the diff by the “smaller” section […]
Tire Sauce and Tire Warmers – Getting the Most Grip on Track
If you’re into RC racing, you know that tires are everything. Even the best motor and chassis setup can be undone by poor traction. That’s where tire sauce and tire warmers come in. Using them correctly can make a huge difference in lap times, consistency, and confidence behind the transmitter. Tire Sauce: Sticky Magic for […]
TT01 grinding noise
When accelerating hard on a TT01 (or even a 02) you may hear a grinding noise coming from the rear. The first thing you should do is to change the main drive shaft. The stock plastic one is flexing crazily when in high speed. Replacement is easy when you do it from the rear end […]
Need for Speed (on concrete): The Unexpected Thrill of On-Road Buggy Racing
When people think of RC racing, the image that usually pops into their heads is a monster truck bouncing over dirt jumps or a buggy flying through the air in a cloud of dust. Off-road gets all the glory. I’ll admit it: I used to walk past the on-road section at the local hobby shop […]
RC Car Terminologies Part 1 (parts sponsored by 3Racing)
Main Chassis (from the XI Sport NU) Suspension Arm, a car should have at least 4 of these, 2 at the front and 2 at the rear. Rear hub, Turn Knuckle and C hub. The C Hub holds the Turn Knuckle at the front. Servo horn, for connecting to the steering linkage. Shock Tower, for […]
