bulldog
PDDR Forum Member
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Posts: 5
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Post by bulldog on Jan 27, 2011 1:02:45 GMT -7
I'm a newbie to the PDDR. You have a great website and I can't wait to join the racing. My son's pack is using the S&W Crafts car kit . Website www.pinewoodderbycars.com. It's similar to the RR kit, but the wheel bores are shorter, with a partially threaded screw for an axle. The diameter of the axle shaft seems way undersized for the wheel bore. We have to use the parts from the kit, so I can't replace it with a larger diameter screw. The rules also say no bushings or bearings. I've tried setting the axles straight and canted (using The Block), but the overwhelming problem seems to be the mismatch between the axle and wheel bore diameters. I haven't lathed the axle to round because I fear I will make the diameter even smaller. I am considering electroplating the axles to try to increase the diameter. I would welcome any suggestions. Thank you in advance. Bulldog
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Post by W Racing on Jan 27, 2011 8:45:50 GMT -7
Can you use oil?
I would tend to not cant the wheels if they are discs. It is hard to tell from the picture....
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bulldog
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Post by bulldog on Jan 27, 2011 15:40:06 GMT -7
The axle OD measures 0.105. The wheel bore measures 0.125. I can tilt the wheel about ten degrees left or right on the axle!!
The wheels are discs.
Bulldog
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bulldog
PDDR Forum Member
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Posts: 5
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Post by bulldog on Jan 27, 2011 15:44:20 GMT -7
Cannot use oil. Graphite only allowed. Bulldog
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Post by W Racing on Jan 27, 2011 22:38:10 GMT -7
Well. Polish the bores and axles. Burnish with graphite.
Drill holes with Block
Drill rears straight and not canted...
Run the rail if you are allowed.
If not narrow both sides on the front of the car....
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Post by F.A.S.T Racing on Jan 28, 2011 14:19:32 GMT -7
The axle OD measures 0.105. The wheel bore measures 0.125. I can tilt the wheel about ten degrees left or right on the axle!! The wheels are discs. Bulldog Having used both style Royal Ranger kits,S&W and GPH, here's what I have used in the past: Go to a local full service hardware store and get 4 new #4 x 3/4 pan head slotted wood screws. They are larger in diameter - 0.112 For best results take your wheels with you & a magnifying glass. Test fit until you get the best fit, then inspect the shank carefully for imperfections. The #4 pan head wood screws look identical to the OEM ones that S&W provide. I take it that you can't use #4 x 3/4 countersunk screws Our Royal Ranger outpost allows us to use them, I've had great results with the brass ones. They polish up wonderful. If you can't change the screws, then fill the wheel bores with Devcon F epoxy. Mix in some graphite to color the mix black. Tape over one side, then fill the bore. Allow the epoxy to cure at least 48 hours. Redrill the hole to whatever I.D. you desire. Just my .....
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bulldog
PDDR Forum Member
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Posts: 5
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Post by bulldog on Jan 30, 2011 16:40:04 GMT -7
Thanks to everyone for the good ideas. I will put them to the test and see if I can make this car run at a decent speed. Bulldog
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