Vance W Jaqua wrote:

This is where a reduction drive with offset from the engine

centerline

provides a benefit, Each inch of offset buys you two inches of prop
diameter. - (Gee! would this make an EZ in side profile look like
the famous BD5?)   :)   - Vance

Good idea. Get one of Ken's tried and true 3:1 cog belt reduction

units and have

Ken lengthen the output shaft by about a foot. Ken could use

something like this four

inch output shaft without the planetary to stiffen the output shaft

in torsion.

That will make one hell of a pusher PSRU. Could help with the

prop-in-wing-wake

problem.

Paul Lamar

At this time the EZ's and the like have no pitch change under power,

one of the really bad characteristics of the 'viggen, which

I believed lead to more than one crash.
Canards are very pitch sensetive to begin with. If moving the C/L of

the engine up to use a bigger prop or get more ground

clearance was a no brainer they'd all be doing it anyway.
...Chrissi

You can't extend the gear and you can't raise the thrust line so Burt
has designed you into a box.

Well you will just have to bear the canard cross then.

Paul Lamar

Sounds like the canard people are a bunch of innovative weenies :)

Hook the throttle linkage to the elevator linkage and up the canard

elevator when

the throttle is jammed forward. Of course this probably won't work as
the canard is already limited in control authority so you can't make the
rear wing stall. since you can't approach stall on the rear wing you can't
slow the canard type airplane to a reasonably landing or crash speed :)

I digress :)

OK hook the throttle linkage to the ailerons and up both ailerons when you

jam

the throttle forward.

Embed a hydraulic cylinder in the nose gear strut and pump it up solid to

extend

the nose gear with out moving the nose wheel pocket in the fuselage.

Beef up the structure where the main gear goes and widen longer aluminum
gear legs and use the same leg angle. That will widen the rear track.

BTW on a bending stiffness to weight ratio the aluminum is superior to

fiberglass.

Furthermore it don't melt when you hit the brakes.

I can do this stuff in my sleep :)

Paul Lamar

Martin Morgan wrote:

Pitch change with power? Why not set the engine up with a little up thrust
(down thrust for a tractor). Works fine in models and a number of full size
A/C.

The Pawnee 260 has 3 or 4 degrees (I forget which) of down thrust.

Martin Morgan

Good point Martin. What a coincidence. See the previous message.
Long EZ's already have down thrust.

Paul Lamar
 
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