Help with the Silver Bullet XTREME

[Ohly]

Playing around with the SBX for our Local Scout Meet in prep for a Local Adult Meet.

I am using the top cut off part of my son's ladder car, for another build. We will have 3 cars in the meet,plus helping the other Den members with builds...

Since I don't have access to a turning table or a practice track I might try to run the car straight as all four wheels are touching but not yet sure on the Local Adult Meet rules....

Scout rules states that all four wheels need to be "Flat". Would it be better to drill all four wheels at 0 percent, 3 percent, front at 0 & back at 3 percent, or something else all together? Also with the SBX there is a difference in wheel height, so what is the best option for all four wheel build? Cool tool! Just need to learn more about it now.

 

[CM02WS6]

What does the "flat" rule mean? Wheels cannot be machined to a bevel/point/H shape, or the wheel axis must remain parallel to the track? If it means the wheels must be parallel to the track, then you can't drill them at 3 degrees.

 

[Ohly]

What does the "flat" rule mean? Wheels cannot be machined to a bevel/point/H shape, or the wheel axis must remain parallel to the track? If it means the wheels must be parallel to the track, then you can't drill them at 3 degrees.

Thanks for the reply!

"Flat" means no light showing under the wheels as it rolls.

 

[CM02WS6]

Well, in that case it sounds like you can angle the axles. Look around for some information about how to make a four wheel rail runner.

 

[Racing358t]

Thanks for the reply!

"Flat" means no light showing under the wheels as it rolls.

Sounds a lot like our packs pwd rules. I'd drill it using the "0" bushings. If you drill at 3 there is a fairly high possibility the entire tread will not be touching the track. This depends on how big the bore is in relation to the axle.

Scott

 

[CM02WS6]

Excellent point. I initially understood the "no light" comment to mean that part of each wheel must touch; therefore, angled wheels allowed. However, reading that as "no light under any portion of the wheel" means they must all be at zero degrees. It would be easier to say that the wheel and axle must be parallel to the track....

 

[Thinkin'Bout Racin]

The wording in these rules would allow a slight cant to the axles. However the amount of cant would be limited by the axle dia and the bore size of the wheel.

A person would need to test the amount, but my guess if you are using Scout axles that you could drill at ~1*-1 1/2* for the rears. This small angle would allow the wheels to still ride flat at the surface, but would "encourage " the rear wheels to ride out against the axle head. This is a case where the old style drill blocks like the Silver Bullet would shine. A person could experiment with drill angles by changing pins until you found the right combination.

 

[Ohly]

Good tips and thanks for replying. I have had a lot of fun playing with different options with this little wood block and introducing my son to Power Tools. You guys rock. What a great hobby