Pinewood Derby Wheel/Axle Q&A - Pre-2009 BSA Wheels

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Pinewood Derby Wheel/Axle Q&A
Pre-2009 BSA Wheels

Q: What is the differences in the various pinewood derby wheels you offer?

A: Here is a comparison of the wheels we offer:

Type	Quantity	Weight¹	Axles Included?	Matched	Prep Required
Official BSA	4	2.7	Official BSA Stock²	No	Full Prep
Premium Official BSA	4	2.7	Official BSA Stock²	Yes, molds 2, 7, 8, 12, 15	Full Prep
Speed Official BSA	4	2.6	Optional: BSA Speed (4094)²	Yes, all molds	Optional: Polish inside edge and bore
Pro-Stock Speed Official BSA	4	2.5	Optional: BSA Speed (4094)²	Yes, all molds	None
Ultralight Speed Official BSA	4	1.8	Optional: BSA Speed (4094)²	Yes, all molds	None
Pro Ultra Lite Speed Official BSA	4	1.0	Optional: BSA Speed (4094)²	No	None
Awana	4	2.2	Official Awana Stock	No	Full Prep
Awana Speed	4	1.0	Optional: Official Awana Speed (4025)	No	Optional: Cone hub, polish bore.
MV Wheels	4	2.4	Kits - Speed Axles (4095) Bulk-Clean nail axle	No	Full Prep
PineCar	4	3.5	PineCar Rod & Nail Axles⁴	No	Full Prep
PineCar Speed	4	1.5	No⁴	No	None
RA Racer Speed	4	1.5	RA Racer Stock	N/A	Optional: Cone hub, polish bore.
Outlaw	4	1.1	Nickel Speed Axles (4096)	N/A	None
Needle Outlaw	4	1.1	Needle Axles	N/A	None
X-Lite Outlaw	4	0.8	Nickel Speed Axles (4096)	N/A	None
Needle X-Lite Outlaw	4	0.8	Needle Axles	N/A	None
Super Stock	4	1.8	Nickel Speed Axles (4096)	N/A	None
Needle Super Stock	4	1.9	Needle Axles	N/A	None

¹Typical weight per wheel in grams.
²Can use: BSA Speed Axles, Grooved BSA Speed Axles, Official BSA Speed Axles, Speed Axles, Nickel Speed Axles, or Super Speed Axles.
³Supplied in MV Basic Car Kits.
⁴Can use BSA Speed Axles, Grooved BSA Speed Axles, Speed Axles, Nickel Speed Axles, or Super Speed Axles.

Q: What is the difference between the Speed, Pro-Stock Speed, Ultralight Speed, and Pro Ultra Lite Speed for BSA?

A: Here is a comparison of the four wheel types:

Type	Weight (grams)	Steps Performed	Prep Required
4090 Speed Official BSA	2.6	Mold matched, trued tread surface	None Required - Optional: Polish bore with 5102-Bore Polish
4080 Pro-Stock Speed Official BSA	2.5	Mold matched, trued bore, trued tread surface, squared outer hub, trimmed inner edge	None Required - Optional: Polish bore with 5102-Bore Polish
4070 Ultralight Speed Official BSA	1.8	Mold matched, trued bore, trued tread surface, squared outer hub, trimmed inner edge, weight reduced to 1.8 grams	None Required - Optional: Polish bore with 5102-Bore Polish
4060 Pro Ultra Lite Speed Official BSA	1.0	Mold matched, trued bore, trued tread surface, squared outer hub, trimmed inner edge, weight reduced to 1.0 grams	None Required - Optional: Polish bore with 5102-Bore Polish

The following photos show the difference in appearance of the wheels:

Figure 1
Comparison of Spoke Side of BSA Wheels

Figure 2
Comparison of Hub Side of BSA Wheels

Q: Where on your web site can I order these wheels?

A: Click on the links in the first column of the tables above.

Q: Where can I find information about the mold numbers for BSA wheels?

A: Right Here.

Mold Characteristics

The table below provides the characteristics of the various BSA wheels. The definitions of the columns are:

Round: How close the wheel approaches a true circle. This is irrelevant for lathed 'Speed Wheels'.

Left-Right: How close the sidewall is perpendicular to the wheel hub.

Bore Size: The relative diameter of the wheel bore.

Important Note Within each mold family, there are occasional bad wheels. This is mostly due to the manufacturer not allowing the molded wheels to cool sufficiently before mold removal. Always spin test each wheel, eliminating wheels with excess side-to-side wobble.

In the table below, the premium matched wheels are identified with a green background.

Mold #	Round	Left-Right	Bore Size
1	Good	Good	Typical
2	Excellent	Excellent	Typical
3	Good	Okay	Typical
4	Good	Excellent	Typical
5	Good	Okay	Typical
6	Good	Excellent	Typical
7	Excellent	Excellent	Typical
8	Excellent	Excellent	Typical
9	Okay	Okay	Typical
10	Okay	Good	Typical
11	Okay	Okay	Typical
12	Excellent	Excellent	Typical
13	Okay	Excellent	Typical
14	Okay	Excellent	Typical
15	Excellent	Excellent	Typical
16	Good	Okay	Typical

Notes on measurements:

Measurements were made in July of 2010. Ten wheels from each mold were randomly selected from 2,400 wheels. The wheels were examined and the results averaged.

In general, all of the wheels are good - much better than the previous wheel version. The difference between the Excellent, Good, and Okay ratings is a few thousandths of an inch.

The bore size on all mold numbers measured within one thousandth of an inch.

Q: Can I pick a mold number?

A: Yes, to reserve and order a particular mold number for Speed Wheels, or Premium Matched Wheels please Click Here.

Q: What is the difference between the axles you offer?

A: Here is a comparison of the axles we offer:

Axles

Type	Quantity	Material	Head	Diameter	Burrs?	Tip	Prep Required
BSA Speed	4	Zinc-plated Steel	Beveled	0.087 ± 0.0005	No	Nail Point	None required, but polishing with metal polish is recommended
Grooved BSA Speed	4	Zinc-plated Steel	Beveled	0.087 ± 0.0005 Mulit-grooved	No	Nail Point	None required, but polishing with metal polish is recommended
Official BSA Speed	4	Zinc-plated Steel	Beveled	0.086 ± 0.003	No	Nail Point	None required, but polishing with 1350 grit and finer is recommended
Speed for BSA, PineCar, Outlaw, etc.	5	Zinc-plated Steel	Beveled	0.0870 ± 0.0005	No	Blunt	None required, but polishing with metal polish is recommended
Nickel Speed for BSA, PineCar, Outlaw, etc.	5	Nickel-plated Steel	Beveled	0.0870 ± 0.0005	No	Blunt	None required, but polishing with metal polish is recommended
Super Speed for BSA, PineCar, etc.	4	Nickel-plated Steel	Beveled	0.0910 ± 0.0005 Dual Groove	No	Machined Point	None required, but polishing with metal polish is recommended
Official Awana Speed	4	Zinc-plated Steel	Beveled	0.092 ± 0.0005 Single Groove	No	Blunt	None required, but polishing with metal polish is recommended
Awana - Stock	5	Zinc-plated Steel	Square	0.092 ± 0.0005	No	Blunt	None required, but polishing with metal polish is recommended
RA Racer - Stock	4	Zinc-plated Steel	Square	0.094 ± 0.001	Yes	Nail Point	Full Prep
PineCar Nail - Stock	5	Zinc-plated Steel	Square	0.088 ± 0.003	Yes	Nail Point	Full Prep

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