MAXIMUM VELOCITY! ®
4060 - BSA Pro Ultra Lite Speed Wheels
1 Gram Wheels by DerbyWorx
Now, the ultimate wheel for your BSA race!
Our Pro Ultra Lite Speed Wheels1 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 squared to ensure accurate mounting on the CNC lathe.
- 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, the inside wheel face, and the inner hub.
1DerbyWorx will be machining the Pro-Ultralite Wheels from the older style BSA wheels while supplies of those wheels last. With the level of machining involved in the Pro-Ultralite wheels, the new style BSA wheels provide no advantage.
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.
- The beveled hub reduces the braking that occurs when the wheel hub contacts the car body.
Usage
The Pro Ultra Lite Speed Wheels are used without any additional preparation. Just 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
| Model | Trued
Tread | Coned
Hub | 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 |
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: 2.6 grams/wheel)
Copyright © 2009 by Maximum Velocity, Inc.