Here is a sketch and picture of my latest design for the 2nd gen front
motor mount. (rear in a tractor). The 2nd gen front cover does not have
the built in motor mount bosses.
The holes in the front cover extensions have not yet been drilled
as I need to grind the flange off the edge of the oil pan seen
at the left. This was made from a 2 by 3 by 1/4 inch thick angle
extrusion. A T extrusion would work better as then you could pick
up two of the oil pan bolts instead of only one.
The exact dimensions of the pan hole from the front cover extensions
was hard to determine accurately. I made a special bolt with
a center point and tapped the bracket on the bottom with a hammer
to mark it for the drawing and drilling the hole. I took a picture
of this little bolt if anyone is interested.
These cute little Barry rubber mounts are just great as you can get them in
a variety of sizes and stiffnesses. Very cheap too at around $5 each.
The 22001 comes with a free snubbing washer.
Paul Lamar
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Paul,
I know that you gave us a disertation on motor mount forces last week
but... I thought that the primary motor mount loads were going to be on the
right mounts (from the pilots seat) but your new rear mount is on the left side
of the engine. Do I have the forces backward? Our engines will turn counter
clockwise (again, from the pilots seat) so it looks like the left mount will see
an upward loading and the right mount will see a downward loading. Please
straighten me out.
Also:
For Ken G.,
As I mentioned yesterday, in order to use an early front cover you have to use
an early oil pan or build your own. Early front covers ('85 and earlier) are
about 1/2" deeper (as measured from the front housing - they 'stick out' further
from the engine). It is this added length that keeps the '86 and later oil pans
from bolting up.
Ken Powell
I might now have them backwards. I'll reason it out again now.
The engine rotates CCW looking at it from the front. With the
2.17:1 psru the prop rotates CW. So the major torque down load is
on the left side looking at it from the front. Right side from
pilots point of view!
Opps I screwed up, No biggie I will leave it where
it is for now. Don't want to make another bracket. However
if I find a piece of suitable T extrusion at my local surplus metals
place I will make another better bracket for the left side looking at
it from the front. Right side from the pilots point of view. Have not
made the tripod yet.
Thanks for checking me on that Ken.
BTW we should start using port and starboard. What side does the
pilot sit on? :-)
Paul Lamar
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