This is made from .090" thick 4130 sheet and 1.5 by 3/4 by 3/4 inch
long 4130 rectangular tubing tig welded together. The sheet is water jet or
laser cut for accuracy and ease of welding in the short sections of rectangular
tubing.

Flex plate is 3.4 pounds with ring gear.

Sheet metal driven is 2.4 pounds.

Molded low durometer silicone rubber blocks fill the spaces between
tubing sections.

The Ford flange with the drive spline weighs about
3 pounds. Some of that can be machined away as unneeded.

The advantage of this approach is everything can be changed
or adjusted if necessary.

It can be sold as a kit of parts for those that can weld.

It might be possible to use it as a mold for liquid silicone
rubber.

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There is plenty of precedence for this design as it is more or less
a motorcycle rear hub copy. The diameter of the damper part can be cut down
by machining down the diameter of the Ford part. In fact the
first one I build will be done that way.

dwgs on that soon.

Paul Lamar

paul

re ; rethinking damperplate ;  I agree rubber is not compressible , but to
put it under compression you would have to decrease the volume of the cavity
holding the rubber which you are not doing. as the center pin under load
moves closer to one side of the rubber cavity it moves away from the
opposite side an equal amount so there is no change in volume of the cavity
no hydraulic lock , the rubber flows around the pin to fill the cavity. how
much it resists the flow and the amount of damping depends on the hardness
of the rubber.

grant taylor


Yes I agree with that scenario. It does however add a lot of stress to the rubber.

Here is revision one. Lots of holes cost very little more when laser or water jet cutting. This gives the rubber room to distort in a favorable manner.

If you have a damper already keep the Ford part.

Paul Lamar