Sept 11, 2005. WE WILL NEVER FORGET!
I started out wishing to construct a cab-over-engine sleeper cab, and flat bed trailer (the trailer being made mostly out of a hand dolly). When I scaled the truck originally based on hand truck tires, I was using the measurement of 4.5 inches. It simply slipped my mind that the 4.5 inches was a measurement of the RIM and not the tire assembly. With the tire being an actual 10 inches in diameter, the truck would have to be 1/4 scale for the tires to look right. After reviewing the website http://www.eastcoastminiclassics.com I see that they use 6 horse 'lawn mower' engines in similar 1/4 scale trucks. Their trucks are capable of pulling a 1200 pound trailer, and up to a 350 pound driver. My truck will not carry a passanger and at the moment I am planning on carrying a 1/4th scale model car.
Monday, September 12, 2005
WE WILL NEVER FORGET!
Monday, September 5, 2005
Radio Control Tractor Trailer, second issue
Sept 04, 2005. I am working on ideas to create a reverse gearing system that can be controlled with a push-pull motion of a servo. I havean idea but I have no clue if it will work effectively. Dad says that one of his Mother Earth News magazines has the same'linkage' that I designed in the drawings for a gocart, so I guess I did something right. The linkage requires three identical gears, and two identical pulleys, none of which are anything special. Using one smaller pulley then the the other will effectively drop the ratio for reverse. Here's a B/W of my idea..
I had another idea.. using the mobility scooter differential in place of the red axle in his picture, I can pwoer BOTH rear axles with a sngle chain on each side. I will have to add some srings to it to keep the rear 'truck' from "pulling wheelies" (back axle digging in, front axle lifting off ground). There is a slight chance that this may create a convincing "wheel hop" like big rigs sometimes do.. We'll see.
