Our Elders Quorum had a Pinewood derby for all the guys in the group. The only rule was no open flame. Other than that , it was wide open to what ever you wanted to do for your car. It had to, of course, stay on the track long enough to cross the finish line, and was still subject to laws of physics, such as gravity, drag, etc.
I live in a ward with 3 brothers that are extremely talented in the art of crafting. They have a family metal shop that supports a good part of their family. Needless to say, they have every tool at their disposal, and during the weeks before the race, were talking about and planning their cars with each other. We also have a good number of other guys in the group that are somewhat skilled in such arts, and judging from their weekly EQ discussions, were actually spending time and resources on their cars.
I knew I had a formidable challenge, and up until the day or two before, was going to simply go to the race with the expectation of loosing. I would do a modest job on my car, with a modest design, and just hope for the best. I am not a competitive person. My high school coaches would get frustrated with me, because the fear of loosing what NOT a motivation for me, especially when the other team was trying so hard to win.
I toyed with several designs in my head, including: fan with motor, mouse trap, motor to axle, RC car modification, CO2 cartridges, and the like. Now remember that I have as my foes guys with endless tool resources, and a couple of them have more time on their hands at this time of year due to the weather.
Well, with some urging of my wife, I decided to take on this challenge with a little more thought, and spent an afternoon in the garage working. While I was out there, contemplating the different designs and what I would need for each, a thought came to mind to just make the thing heavy as a tank, and just go strictly with gravity power. I had a weight in my “project supply” bin that would fit pretty well on the car, and was definitely heavy enough. I was toying around with the idea of just sticking to gravity and admitting defeat against the other powered cars, when that light bulb went on.
Just like some martial arts, I need to make their strength their downfall, and use it against them. But how will I be able to do that? How can I just steal their speed or design, no matter what it is? One word came to mind: an ARM. I would just have a bar of some sort sticking out in front of their car, and then just put a piece of wire on my car out in front of that, and I will win, every time, no matter what.
So
, here it is.


The arm lays on the track, and at the starting line, the other car has to line up behind my arm. I made it so I could pivot the arm to either side, depending on the side of track I was on, and put that weight on the back to make her stable.
I made no modifications to the block of “Pinewood,” and spend about 2 minutes putting the wheels on, straight out of the box. No graphite. No smoothing of the axle nails. No turning of the wheels on the lathe. No tuning so only 3 wheels touch the track. No tilting of the wheels so only the outside edge touches. No aerodynamic paint. No exact weigh in the day before.
#1 -Screw on the weight.
#2 -Screw on the brackets. I made them with a Skil saw and drill press.
#3 - Insert the branch from the back yard tree that is the pivot for the arm.
#4 - Drive nail in front side of arm, to assure I am in the lead.
#5 - Attach wheels.
#6 – Done.
Now, you will have to prepare yourself for some mocking and scorn, but you will be victorious. No way around it.
When I walked in and set my car on the table of all the cars, most of the guys sort of chuckled at the crudeness of the car, and then it would register… “Wait a minute…” I also heard a couple, “Oh yeah, I thought of that.”
My first race was against one of the brothers of this family. He had obviously spent considerable time on his car, as it had twin fan props mounted to twin electric motors with a rechargeable battery for power. He set his car down and then said, “I’m not even going to turn my car on.”
I said, “O.K.,” and won.
The entire night was changed from “Who has the fastest car?” to “Who can beat Sam’s car?”
It was a lot of fun. Now, go make your own car, and get to winning.
It is unabashed cheating, but is it no rules, or is it no rules?
Front View:

Rear View: