Vance and I were discussing the Kis Cruiser landing gear design
and he mentioned that it was good for a 4 G drop as I recall.
His contention is... that is what the FAA calls for and is far
more than most home builts will survive. I know for a fact
that a Dragon Fly or Q2 with the wheels on the
ends of the wings will not survive 4 G's. Several that I know
about have failed being dropped in. 

That brings me to motor mount weight. This mount for my Kis
Cruiser I estimate will weigh about ten pounds not including the
small rear mount. This, I estimate, will weigh about two or three pounds
pounds. I designed it for six G's so in light of what I now know 
it is probably over designed. At least one recent 13B mount that 
I know of weighs 17 pounds. And Tracy's weighs 28 pounds total but 
that includes the tubing sockets for the RV4 main gear struts.
Add three pounds to my mount for an enlarged PSRU plate over
the weight of Tracy's PSRU plate.

Paul Lamar
 
The AirCraft Rotary Engine NewsLetter.              Powered by Linux.

http://home.earthlink.net/~rotaryeng/            http://www.linux.org