Troop Champion

Jan 18, 2012
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Albuquerque, NM
Our Trail Life USA troop had our inaugural Pinewood Grand Prix this weekend. My younger son, Jack, won it all by a fair margin. I had competition this year, and managed only 2nd place in the Dads/Leaders bracket. My older son, Justin, built his car on his own this year.

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Jack's Championship winner.

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The PGP 2014 Fleet

This was the first time I used the oil process. Is it normal for the car to get faster over several runs? After a lackluster first run, Jack's car set five consecutive track records.

On our Test 'n Tune night (night before the race), our cars were still bare wood. I set the alignment on the cars w/ only Jig on the axles. I marked their final positions with Sharpie, and we painted. When I did the final prep on the axles, my fresh spray of Jig erased the Sharpie almost immediately. After oil, I re-mounted the wheels in the best guess positions. Jack's car flew. My car, not as much — although it turned out to be the 3rd fastest car in the race (Jack's was first). Later, I did a roll test on my car and found it was turning 10" over 4'. /images/boards/smilies/eek.gif If I'd have only had time to re-tune...

Thank you all, by the way, for your help in getting a rule set established for the race. I was running around like a chicken with its head cut off, but the race went well, and most importantly, the boys all had fun.
 
Congrats! Yeah almost anything with a propellant will dissolve sharpie. That is where having the slotted head can come in handy if your rules allow.
 
IMHO, it takes 5 to 7 runs for oil to reach maximum break in.

After that, I don't know, since I re-prep for each race. But I know some go several races before re-prep.
I.e. I clean nails with denatured alcohol, then only Brasso, then Jig.
Alcohol pipe cleaner on the bores, then Red Rocket. I rebuff after 12 hours.
 
Last night was our PW pack race. I told pack I would help anyone who needed it. Only 5 dads with kids came.
They took 1st through 5th places. Now I am afraid next year I will be deluged. Those 5 cars were very close, and were almost 2 feet ahead of anyone else. At least six "first time" dads, took my phone and address (plus 2 single mothers).
I made them pay for the tungsten weights (lead was an option, but no one chose it).
3 of them made their own bodies, the other two I gave 4-flat DD4H bodies (x type), and 2 pieces of Econkote for top and bottom, and had them assemble everything while I helped the boys do the wheels and nails.
I drilled the body holes for 3 boys with GoatBoy's drilling jig. The other two 4-flats were pre-drilled by DD4H.
Then I made each boy prep both wheels and nails in a Dremmel and pipe cleaners.
To make it easy for the future, I used 3M body cleaner 1st (very slow speed, 5 seconds) then 3M synthetic wax in wheel bores (18,000 RPM). Q-tips would have been better for the cleaner, but I wanted to make the process fast and simple.
I told them that DD4H has faster stuff, but 3M is readily available.
I made them do the nails using 600 grit thru 12000 (5 to 10 seconds each), followed by only Brasso. (I didn't tell them about Jig.
The two 4-flat cars took first and second, both very close and turning 2.9's (formula adjusted using my test track (i.e. .9978)).
However, I did use a lathe very light on the running surface of the normal BSA wheels (2.5 g), with a slight tick on the outside edge of the wheel bore. No where as good as John does, but not too bad.
For those who made their own bodies, I showed them how to adjust the steer on my tuning table.

For the 2 boys using Econokote, I gave them a bunch of Sharpie pens, and they had a ball drawing designs on the white Econokote.

All this took about 2-3 hours per car. Econokote because no painting wait time.

Then I gave them a sheet with the above instructions for future years, and also handed out the same sheet to the other fathers. This is a quick fairly economical way to do competitive BSA cars. I charged them $15 for the Tungsten and Econokote, but gave them the bodies free. If next year I have 8 or 10 participants, I will change the charge to $25. Slight loss, but worth it.
 
Congrats on getting things rolling with the new group Eric.

Good stuff Opa!