| Bearing: A standard flanged sleeve bearing will
be used in the ends of the Universal Us. |
 |
| Universal Cross: The Universal Cross will be cast in
iron. The main machining required will be reaming the holes
to the correct size to accept the Universal Pins and possibly
filing the ends so that fit between the bearing flanges of the Us.
The 6-32 hole will also need to be drilled and tapped.
This hole will hold a set screw which will keep the pin without
the notch from rotating in the cross. |
 |
| The photo on right shows the universal cross pattern.
The pattern was fabricated from brass rod. The two pieces
were soft soldered together. The white grains in the
photo are sand from the blasting process. |
 3 |
| Universal Round Shaft U: The U castings will
require reaming of the holes. The 5/8" diameter shaft hole will be
broached for the key and also have the hole drilled and tapped for
the
set screw.
The sleeve bearings will be pressed into the holes in the end
of the U with the
flanges on the inside. |
 |
| The round shaft U pattern is shown on the right.
The pattern was machined from a single aluminum block.
Bronze sleeve bearings were installed for the photo. |
 |
| Universal Square Shaft U: The bearing of the square U
casting
will require reaming. The square hole for the slip joint
should require no machining except possibly for smoothing with a file.
The sleeve bearings will be pressed into the holes with the
flanges on the inside in the ends of the U.
|
 |
| This is the square shaft U pattern. The U part was
machined from an aluminum block. The square part was
assembled from a U channel and a cover plate. The end of the
square pare was tuned round and inserted into a mating hole in the
U part. The two pieces were held together with Loctite.
The pink stuff barely visible is body filler used to fill holes. |
 |
| Universal Pins: The pins will be made from 3/8"
diameter mild steel rods. The shorter pin is retained by the
other pin via the notch. The longer pin is held in place by
.029" wide external retaining rings (standard hardware for 3/8"
diameter shaft)
The 3/16" holes in the ends and 1/16" cross holes are for
lubrication. The 3/16" holes will be fitted with the oil hole
covers described below.
|
 |
Oil Hole Cover: These oil hole covers will be used in the ends of the
universal pins. They are available from McMaster-Carr. Part #1214K1
has A=3/16", B=1/4" and C=9/32". The
catalog says: These
low-profile covers have a self-closing ball valve. When you're
ready to fill, the pressure of your oil container easily depresses
the ball. Friend Dave Johnson uses this type cover on
his Ten Wheeler for grease nipples. He uses a grease gun
with a tapered nose fitting --- works great. The drive-in covers are zinc-plated steel.
|
 |
| Drive Shafts: The drive shafts are made from 11/16" mild steel
square stock. The entire length except for the slip joint square
end is turned to 5/8" diameter. There will be a key slot
milled in the round end to mate with the slot broached in the
Universal U. The lengths vary from about 7" for
the shaft to in the front truck to about 15" for the shaft to the
middle truck. The exact length of the shafts will be
determined after all other variables have been fixed. |
 |
| Assembled Universal: The universal can be
assembled with one square U and one round U as shown on the right
or with two round Us. Each three truck Heisler has three
Square-Round Universals and three Round-Round Universals. |
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