
Kimbrough 48P Slipper Spur Gear (81T)
About this part
Kimbrough Products 48 Pitch slipper spur gears were developed for Associated B4, T4, B5, T5, B44, SC5 and SC10 vehicles. Kimbrough Racing Products Plastic Gears have been used to set all of the unlimited speed records for R/C 1/10 scale electric cars in the U.S., and are used by a majority of the top professional R/C car racers around the world. The best drivers in the world trust Kimbrough gears, so you know you can too!
Kimbrough spur gears are molded with black 4/6 Nylon plastic, because black dissipates heat into the air better then any other color - and high temperatures are not good for thermo-setting plastics. This plastic is almost three times tougher and will withstand operating temperatures 75° to 125° higher than plastics used by other R/C car gear manufacturers.
Kimbrough spur gears are full width, because a narrow or profiled plastic gear can deform under load, is weaker and less efficient. This can cause drag in the gear train and waste horsepower. The wider a gear is, the more load it can handle. The only time gear engineers narrow gears, is when there is a space limitation. Kimbrough Racing Products gears run quiet because they have the correct tooth shape and don't have to be narrowed. Choose from a variety of tooth count choices to allow you to fine tune the torque and top speed of your model.
NOTE: The use of full width pinion gears is highly recommended.
Reviews5.0 · 7 reviewsacross all options
Forget those Silent Speed gears, this is all you need. Pair it up with a Robinson Absolute pinion and you'll have the quietest car on the track.
Great spur gears, i use them in all my offroaders.
Kimbrough spurs are pretty great, I've been using them in most of my 10th scale RCs without a single problem. They're tough, true and fairly quiet. This 69T in particular is perfect for stock gearing on B4(.1/.2) buggies.
love this spur gear, fits better than asso stock ones
Works well with Element Sendero Transmission I run this with Portals and The Stealth X
All seven reviewers rate the Kimbrough 48P slipper spur gear 5/5, and reviews span several tooth counts (69T, 73T, 78T, 87T, 90T). Reviewers describe the gears as well made, tough, true and fairly quiet, and report good fit in Associated and other 10th-scale chassis. One reviewer notes it fits better than stock Associated spurs. Another reports it works with an Element Sendero transmission. A detailed review of the 87T variant for an SCX10 II explains the gear was chosen for weight and maximum final drive, notes it fits the stock gear case, and says the built-in slipper surface needs filing or sanding to work with stock slipper pads, and the centre shaft hole must be drilled out. Reviews are mostly brief, and no significant complaints are recorded.
- + Tough, true and fairly quiet
- + Good fit in Associated chassis
- + Works with Element Sendero transmission
- + Lightweight plastic option
- − Slipper surface needs modification for stock pads
- − Centre shaft hole must be drilled out (87T)