Recent content by kickaxe

Where can we purchase the kit? I have been scouring the web and have not found any hint of it. If washers are allowed, get delrin or teflon washers to replace them. Also, as Corvid alluded to, if you are not stuck with a 6" max length, you will want to make it longer. The further the weight...

Kinser and Corvid, both of you (and many others here) have helped me with ideas and advice whether it was directly or through reading threads helping others. Since I finally found something that seems like it might be as good as Jig, I figured it would be good to post it. If either of you (or...

The wheel and screw axle in the picture are similar to, but not the same as, the Royal Ranger kits Corvid and I work with. Fenders will not help much as the wheels are already rounded to be aerodynamic. Without fenders, you can use a maximum wheel base which will help with stability. Follow the...

As a CA resident, Jig is pretty much never going to be available for me to use. I have never been much for breaking laws.....even stupid ones, so I cannot ask others to break laws and send me Jig. This has led me to test many silicon sprays and I discovered one that is not only faster than...

LMAO for DD4H reply.

As a "physics guy" I can add to this for all: 1. rail running = rolling friction against the rail, not sliding friction. The fact that none of the wheels stop turning means no energy is wasted trying restart wheels that bumped. 2. 3 wheels is also faster than 4 due to less starting inertia 3...

Interesting. So. I imagined using a precision hand turned drill instead of a powered one for drilling to minimize damage. And based on OCD's reply I can now imagine how the wheels would be parallel and aligned even if the block is angled slightly one way or the other. Cool.

OCDerby, correct me if I'm wrong, but wouldn't #2 stainless steel unthreaded spacers (with an inner diameter of .09") work in place of the expensive bearings? The spacers are only around $2 each and would act as a guide and protect the plastic. On a different note, I am having trouble...

Thanks for the vote of confidence Ngyoung. However, my razors are made from the RR kit and have a 1/8 inch inner diameter. While they are very fast for ranger races, they are awful compared to scout wheels. This year was the first year I made a 6 oz. Ranger go as fast as my Max V cars. I will...

No brow beating necessary B_Legal and Kinser, I am dying to race in the the league. However, as a single income science teacher with 4 kids under 12 the budget just does not allow for league competition. We chose to sacrifice so my wife could stay at home and raise our kids. The youngest should...

Bulldog, not sure about exact numbers as lube, polish, tuning, etc can all alter results, but the lighter the wheels are, the faster the car will finish as long they stay round throughout the race. I find that the difference can be as much as .02-.04s (or more if the original wheels are out of...

OK. I posted my razor process under the Royal Rangers section since they are the kits I use. I also included how I shave the scout wheels using a similar process. I hope it helps someone.

Vitamin K asked me to share how I shave my razors. Note: I do also shave scout wheels when I build cars to show my students the difference wheel mass makes at the finish line. For those who have not read my previous posts, I am an 8th grade physics teacher who uses pinewood derby cars...

Sorry for the late response Vitamin K. I will try to post pictures of wheels this weekend, along with my process. it has been a crazy week for me, but I should have time tomorrow.

The TV remote car was 2" over 4' with a 7/8" COM and ran very smoothly with the most consistency and had the fastest time of any car on that track for the day. The carbon fiber black car was set to 3 1/2" over 4' with a 3/4" COM and ran very fast in the straight lanes, but .03xx slower in the...