A Laser cut wood body for the highest speed possible.
Speed comes from finding the best trade off between:
1. Equal weight on the back wheels
2. keep weight on DFW low but not too low.
3. Keep thickness of body to 1/4″
4. Make body as light as possible while still being strong enough to resist any bending or vibration during a run, and super robust for Cubs where rough tracks and rough handling can occur.
Our engineering improvements to the typical laser cut body are as follows:
A. Offset the weight behind the back axle to be closer to the DFW.
B. the front axle position has been marked with both the BSA block distance (4 3/8″) and the most used Pro extended distance (4 3/4″).
C., We laser cut, but leave attached, a 1/16″ strip on the DFW side. This allows a solid fit in your drill fixture while drilling the front axle holes, and if desired can be removed to modify the DFW distance from the rail to get the back wheels centered on the rail.
D. We ship with most of the wood intact so you can drill without warping the body.
For best results, lightly sand the laser burned and hardened wood before drilling or gluing. DO NOT PURCHASE IF YOU DO NOT HAVE A WAY TO DRILL YOUR AXLE HOLES.
Typical jigs used for drilling
.Our body as shipped
Leave the 1/16″ spar in place to make the body snug in the drill fixture. If too loose, put some tape over the car, if too tight, sand down. You do not want to force the wood into the jig.
Car is marked for both standard BSA and an extended width that has set world records.
Finish up with the smaller bars and/or cubes and chips to bring the weight
up to 5 oz and fine tune COG for speed and stability.
Best speed with 99.95% pure TxW Tungsten parts (the “Full Monty”).
Other options are to use the lower cost tungsten alloys in the “Poor MontyA”
Low cost parts in the Poor MontyB, two Alloy bars, one cube for over 4 oz.
Less cost than the Poor MontyA, but not as balanced
Fine tune weights give you 15 chips on double sided 3M tape that can be separated and placed to give the best accuracy possible. All 15 are just over what 1 cube weighs. three chips = 1 gram
What weight should I run on the DFW?