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Official BSA
Pro Ultra Lite Pinewood Derby
Speed Wheels
1 Gram
&
BSA Speed Axles






4061
Official BSA
Pro Ultra Lite
Speed Wheels &
4094-Speed Axles (4 ea)
Special Price
In Stock
$44.95


Now, the ultimate wheel for your BSA race!

Our Pro Ultra Lite Pinewood Derby Speed Wheels are official BSA wheels which are precision machined by DerbyWorx with a CNC (computerized) lathe to within 0.0005 inches for the ultimate in accuracy and thus, maximum performance. To provide you with an awesome set of wheels, DerbyWorx performs the following operations:
  • Wheel bores are reamed perfectly round and smooth.

  • Outer hub faces are coned to minimize contact with the axle head.

  • The wheel tread is lathed with True Track to achieve a perfectly round wheel, a flat tread surface, and a slight radius on the edges to replicate the look of a stock BSA wheel.

  • The weight of the wheel is reduced by removing all excess plastic from the underside of the wheel tread and the inside wheel face.

Benefits
  • Round and smooth wheels roll faster than standard wheels.

  • The weight reduction provides a faster start, and improves the balance of the wheel for a smoother ride.

Usage

The Pro Ultra Lite Speed Wheels are used without any additional preparation. Optionally polish the bore with Bore Polish, then lubricate and race!


Important Note

The lathing operation removes a small amount of tread surface. The serrated edge is intact. The tread reduction is barely visible to the eye, but is measurable with a caliper. If your race restricts the use of lathed wheels, consider using our specialty tools and supplies to prepare a set of raw wheels.

Comparison Chart and Photos of Matched Speed Wheel Types


ModelTrued
Tread
Coned
Outer Hub1
Trimmed
Edge
Reamed
Bore
Weight
Reduced
4090/4091 Yes No No No No
4080/4081 Yes Yes Yes Yes No
4070/4071 Yes Yes Yes Yes Yes
4060/4061 Yes Yes Yes Yes Yes
1The inside wheel hub is coned by default on BSA wheels.



Technical Information for 4060/4061 Wheels
Wheel Diameter:   1.170 ± 0.001   (Raw Wheels:   1.182 to 1.185)

Wheel Bore ID:   0.098

Wheel Weight:   1.0 grams +/- 0.1 per wheel   (Raw Wheels:   2.7 grams/wheel)

 
 
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