On 7/29/2021 2:15 PM, Kevin Stolhammer wrote:
I'm fishing for the measured dimensions for the Diehl and/or
grumman legs and lower axle attach bracket.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
I thought I had a cardboard cutout templet of the gear leg but can't
locate it at the moment. I recall seeing it 15 to 20 years ago so maybe
it will appear with more looking. Someone on the net will have that for you
As for the lower bracket, that will be very simple. Dan Diehl
originally sold a cast aluminum lower gear bracket but I wasn't
convinced it was up to the task. I made my own using 4130 steel and
shortly after that he did a recall and issued new steel brackets nearly
identical to what I had made. The date on the photo says that was 30
years ago. WOW !!!!!
https://myplace.frontier.com/~flesner/21.jpg
I used a 1/4" thick piece of 4130 that measured 2"X6". I cut across the
exact center (3" mark") approx 3/4 of the way through the metal. I made
the cut deep enough to bend the metal to a 45 degree angle but left
enough metal to hold the shape and angle of the bracket. I took the two
brackets to a welder and had the cut welded shut and a gusset added to
the inside. A slight rounding of the corners and dressing of the welds
and they were ready to mount. I drilled and mounted the axles first
then drilled the four mounting holes for the leg. When you are ready to
mount to the leg, level the aircraft and drill "ONE" of the mounting
holes in the leg , insert the bolt and snug to hold the alignment your
are about to perform. Now using whatever method you want align the axle
for the toe-in or toe-out you want (I highly recommend zero / zero).
Drill the last three bolt holes and finish the mounting of the bracket.
Dan's bracket differed from my slightly in that he used a 2 1/2" wide
bracket with a rounded bottom. Very slight changes but probably were
improvements. With the exception of those slight changes they were
identical. If you feel your bird is really over weight you could add a
degree or two of camber to the 45 degree bend before welding. My worked
well at 45 degrees with a 760 pound empty KR.
This is not rocket science. Get the metal, get your hacksaw and get
started.
Larry Flesner
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