Quote:
Originally Posted by DonV
"I think Reidy Clark built the first coaster in the neighborhood. Just a piece of plywood with 4
hard wheeled tires. Two by fours were used to hold and position the axles. We just bent pairs of opposing nails over the axles to hold them in place"
Three things I learned, of course at high down hill speed, 1. for a front "centering pin" in the steering's 2 x 4 axle you need more than just a 12d nail, 2. even though hard 1/2" copper tubing fit perfectly in the wagon wheels, with at least 6 nails bent over, it did not have the strength to handle the what we thought were massive G-forces we forced on it, 3. because of the design failures mentioned we also learned concrete does not feel a thing as you bust your butt!!
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1/2 inch bolt and a wide washer.
Hard surfaces are not meant for violent contact.