If you have hex wrenches with replaceable tips and you happen to break one of the tips, you can modify a cheap L-wrench and install it in the handle. Just cut the wrench at the bend so that it’s straight, and install it in the handle. The new tip will work until you get a proper replacement.
A short piece of fuel tubing with a screw on each end makes a perfect container to store 5/64 to 3/32-inch diff balls. Squeeze some diff fluid inside the tubing before you insert the diff balls, and then you’ll be able to squeeze out one lubed diff ball at a time for easier diff building.
If you want your tires to stick securely to chrome rims, you must thoroughly remove the rims’ shiny surfaces (unless you have the latest Pro-Line chrome rims). Use an eye dropper or a rolled scrap of Lexan to funnel a little lacquer thinner around the rim. This will soften the chrome plating enough for you to wipe it away. Be sure to work in a well-ventilated area.
There’s nothing worse than losing a screw, E-clip, or other small metal part when you’re wrenching on your car, so Matthew uses a magnetized parts bowl from Sears to hold small parts when he works on his gear. Make your own magnetized bowl in any size by adding a stick-on magnet (available from the craft store) to the bottom of any metal container. You can also use the magnetic container to find lost parts when working over a carpeted floor. Just slide the magnetic base over the carpet until it grabs the missing item.
Even if you drive an electric car, always keep fuel line in your toolbox. Besides its intended use, fuel line can be cut to any length to make bushings, spacers and wire insulators, and it can be used for many quick-fix remedies at the track.
After tires, inserts and rims are all glued together, there often isn’t a way to tell your various combos apart. When you finish putting a set together, write the insert?s firmness, the tire?s compound and the offset of the rim on each rim. This is a 53-compound tire with a medium insert on a 2mm offset rim.
Larry Demarco >> Chicago, IL If you’re looking for a little extra engine-cranking power, replace the NiMH batteries in your starter box with high-capacity LiPo batteries. You’ll need to invest in a Li-poly charger to charge the batteries, but it is well worth the cost because the batteries provide more voltage, and they do not discharge when not in use. Just remember to disconnect the batteries before storing the starter box.
Many JR Racing and Futaba radio systems have 8-cell battery trays that can be difficult to remove. Make a grab handle out of a piece of electrical tape, and attach it to the battery tray to make it easier to remove.