The Pro-Wheel Mandrel is a precision machined tool for holding wheels in the chuck of a drill. Benefits include:
- Accurately machined shaft allows for precision use in any drill chuck or Dremel-type tool.
- Step-down on shaft allows BSA wheels to be mounted with the 'spokes' facing the drill chuck, simplifying work on the inside edge of the tread.
- Knurled thumb screw eliminates the need to use a screwdriver to mount a wheel (a clumsy operation with the standard mandrel).
- Beveled thumb screw ensures that the wheel mounts accurately on the mandrel.
- Screw can be replaced should it be lost or bent.
The Pro-Wheel Mandrel fits most brands of pinewood derby wheels, however, some wheels are equipped with a wheel bore that is slightly smaller then the mandrel screw. The Pro-Hub tool can be used to ream out the wheel bore so that it fits on the screw.
Comparison with Standard Mandrel
The picture below compares the Pro-Wheel Mandrel with the standard wheel mandrel.
- Material - Precision machined, zinc-plated steel
- Shaft is sized to fit a Dremel-type tool, or a standard drill chuck
"No pinewood derby toolkit should be without the Pro-Wheel Mandrel. From simply polishing the tread surface to more serious tread work, the Pro-Wheel Mandrel is indispensible."
- Mount the mandrel in the chuck of a rotating tool. For a hand drill, drill press, or lathe, tighten the chuck on the wide part of the mandrel body. For a Dremel-type tool, tighten the chuck on the small body shaft.
- Mount the wheel with either side of the wheel towards the step-down face of the mandrel. Generally, work is simplified by mounting the spoke-side of the wheel towards the step-down face.
- Hand tighten the screw snuggly (don't over tighten).