Interesting. Can anybody tell me where the lateral support for the engine
 is coming from? I have no doubt what so ever that this design works.
 Clue: extremely subtle. Perhaps even Steve did not understand
 why it works.

 Paul Lamar

Paul,
Assuming the support points for the engine (marked 36 in the drawing) are
rubber bushed, I would hazard that the triangulation of the engine being
between the 4 points results in it acting like a stiffening member, i.e. for
the engine front to move sideways (say 1"), the diagonal on one direction has
to shorten 1.4" and on the other lengthen by 1.4", in addition to the bending
load on the support members. The back end of the engine is cross braced, and
the vertical bracingprevents the frame from twisting up.

Bill Schertz
KIS Cruiser #4045

Getting very warm there Bill.

Paul Lamar
 
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