01-18-2009, 06:16 PM #1
Anyone making a Pinewood Derby car?
Looking for tips on helping my son make a fast Pinewood Derby car. I know about taking the flashing off the nails that hold the wheels on, anybody have any other advice?
I'm sorry if anyone is bothered by this post, i.e. not Polaris related.... But the boards do seem kinda slow lately.
01-18-2009, 06:56 PM #2
depends on what you can get away with ..let see radius the inner wheel edge where the nail goes thru..use a polishing powder and burnish the nails in each wheel(they are sealed, not to rust) , clean and dry this , dont use oil, run dry or do some spin tests with a dry powder lubes... weight the car and centrally locate any weight added evenly between the axels.. lightly polish the outer rolling surface of the wheels looking for defects .. just as a full size car, cut down air resistance via shape.. a longer body is less affected by track irregularitys (bouncing and curve).. remember ,there is only so much you can deviate from the rules..
just dont go with the kit handed to you .. some woods are denser and work easyer...you can buy these on line or at the regional supply house set up where uniforms can be bought
i know my dad went nuts with mine..i think i saw the first one a 1/2 dozen time before the event..mine were of a circle track car with hand painted flames and anther was a black 'stock car' from the fiftys .. the last one i finally did my self as i got tired of saying 'yes, i worked on it' it was a chapparal type wedge.. have fun let him work on it too...if you can stand it !!!
01-18-2009, 08:07 PM #3
The fastest pinewood cars are front weighted and one of the wheels is barely off the ground (back one). This uses gravity and less friction due to the car only rolling on three wheels. Good luck.
01-18-2009, 08:09 PM #4
Sorry. When I say "front weighted" I mean in the front third and NOT past the front wheels.
01-18-2009, 08:24 PM #5
01-18-2009, 09:50 PM #6
- Join Date
- Jul 2007
- near Toronto, Canada
01-19-2009, 07:11 AM #7
01-19-2009, 08:18 AM #8
and how many of you worked on the car as a kid or did your dad do it all!!! it was funny thinking back how many dads dit the work in secret till the day of the race...
yeah some 10 year old thinks all those race secrets up...
do we need a mud bug derby with woodens skis and rubber band motors
(some one will put a co2 cartridge in to proppel with)
01-19-2009, 09:07 AM #9
01-19-2009, 11:04 AM #10
I see they went to the flat ,wide wheel.. mine were basic disc's ...
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