Derby Talk

CONGRATULATIONS to your team. You all did well.
What was the fastest time of the day? Did you happen to get a picture of the fastest car and did it appear to ride the side? Do most of the cars ride the side of their track or do they bounce back and forth? Do you have a picture of the track?

Each person that builds a track has a specific goal. Randy has found a track that is easy to build and might well be the least expensive a track can be built. The guide strip is 1/4" X 1 1/2" Pine lattice strip which is a stock size. That makes it easy. For many of us on Derbytalk we NEED a "Best" t...

It's not necessary to use the Pro-Axle Bender to accomplish the goal. I simply like that particular tool. I demonstrate it at all our workshops along with all the Derbyworx tools to educate scouts on what's available for them. The nail can be bent using very basic tools without using special tools s...

I wish you the very best. Let us know how the race goes.

The Pro-Axle bender - $79.95. This single tool will enable a builder to set the rear wheels anyway desired and can be adjusted to another angle at any time. Example - I set the rear wheels with 1 1/2 degrees of Negative camber, No toe, and test it on a 35' Best track. I pull the back wheels, bend th...

Thank You.

Anyone have a picture of the car that won the speed race?

All 26 of Doc Jobe's lectures can be viewed by going to Hodges Hobby House, Home Page, the paragraph is in yellow.

This is a good Physics lesson. Setting up the nail/wheel bore as suggested does not reduce friction, it simply moves the friction to a smaller area. A downside, It might wear out the graphite sooner. The same is true by cutting a groove in the axle. It does not reduce friction. A possible benefit of...

MJ, to answer your 1st question. The Laws of Physics were followed more closely by the faster car whether it was intentional or by accident. I have a 3 wheel rail rider, left front wheel raised, back wheels set at 1 1/2 degrees Negative camber. Both back wheels migrate to axle heads while rolling th...

You might want to put this in Derbytalk's Trading Post. That is probably frequently visited. I'm just curious. How long is the track and do you have a timer for it? If the track is around 30 feet long you'll be in good shape. If a car is fast at the 30 foot length it probably will be fast at the 36 ...

MJ, I think we're dealing with too many things at once. Going back to your Topic. Testing a car on a Center guided track is not what you want to do on a lane track. There would be no reason to narrow the car body 1/16" behind the Dfw if you are running on a lane track. Your 2 cars are different in e...

MJ, that is correct. If the nail is off the tiniest bit the wheel is going to have toe in or out. That's not desirable. However, when you're moving to the other track, if you're guiding the car to the right, the right rear wheel must not touch the right side guide. Narrowing the right rear side of t...

Regarding #5. I suspect the back wheels are causing this if you still have them set with Positive camber. Let's back up for a minute. Take the front wheels off one of the cars. Set the back wheels with the 2 1/2 degrees of Negative camber. I'm going to assume you got the 2 1/2 degrees by bending the...

Looks GOOD to me !