Supporting > Engine Ancillaries
Cart Me Off
Jasonb:
I may have mentioned that I have a pair of Root and Vandervoort hit and miss engines to finish off but if I did not them I have the 5/16th scale Vertical and the 1/2 scale horizontal. As these had been 75% completed by a previous owner I won't do a build thread but thought I would post the build of the carts for them.
Starting off with the horizontal I was given a couple of photos of the desired type of cart, possibly a bit large for this engine which mostly just came on skids or occasionally a two wheeled barrow type cart at best. So something was drawn up to suit wheels that could be made from available tube sizes and allow a decent amount of steering lock before the front wheels hit the rails. I also had to incorporate the fuel tank which is housed in the wooden frame.
This pic shows the rear axle brackets on the full size cart.
Not being the type to waste time fondling castings a couple of bits of bar that had been cut out of a crankshaft and a piece of angle iron were cut roughly to length.
The bar was milled down to a rectangular section then held in the 4-jaw to drill through 3/8" and turn a taper along part of it's length. The angle had one leg reduced to 3/4" internal and a recess milled to locate the bar. Also a small web was cut and filed up from some 1/8" offcuts and shallow locating grooves milled for that too.
After silver soldering the bits together they were cleaned up and the corners eased to make them look like cast items.
This is the front bolster that needed to be copied
It was made mostly from 1/8" flat bar with locating grooves as before which kept everything square while it was soldered. The pivot fork was turned and milled from some 2" bar, there is a matching 2" disc under the bolster for this to bear against.
I'm affraid I did not take many photos of the axle being made but it is basically a 9/16" rod reduced to 3/8" at each end for the wheels, a short section then reduced to 1/2" which the lobe shaped brackets fit to and a milled and turned central block that was slid along the axle before it was all soldered together. The pivot hole was then drilled through both parts.
The handle was just bent up from 2ft of 3/16" steel bar.
The front end assmbled
Wheels next time, J
Marty Feldman:
Very well executed assembly.
Unclear, though, concerning your method's saving time over the fondling route. Is it the fettling time that produces the saving? I think I have generally thought of castings as time savers.
-Marty-
Dave Otto:
Nice Fab work Jason!
Are these Randy Rockwell castings?
Dave
fumopuc:
Very nice fabrication work as usual, Jason. Thanks for sharing.
Jasonb:
Marty, that was a bit of a Joke aimed at Jo who seems to spend a lot of time handling her castings. But on a serious not for a one off job fabrication is often quicker that having to make patterns, get them cast and then machine the patterns. There would be almost as much work in making the pattern as fabricating the part. Had castings been available then yes very much faster.
Dave, Yes they are Randy Roclwell castings, they look to be good castings though I did not get to machine any on the horizontal as all that was left were the small fiddly bits, there are some to do on the vertical.
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