Q2 Dual Stick Control System

In retrospect I'm not sure why I went to all the trouble to implement a dual control system. I've almost always flown with my right hand on the throttle. That might have something to do with the decision, And, somewhere along the line I thought it might be fun to do some flight instruction in the Q.

In any case, I've implemented dual controls except for the toe brakes. I did install mounts for a second set of toe-brake cylinders, but I've not installed the cylinders.

The basic idea is to place the sticks in the side armrests, and run the torque tubes along the sides of the fuselage back to the FS95, the bulkhead just ahead of the fuselage split line. This keeps the space behind the seats open for luggage or maybe an aux. fuel tank.

To keep friction to a minimum, all control system bearings are Rulon J mounted in phenolic bearing blocks. I chose Rulon J over Delrin at Bob Farnam's suggestion because of its almost nonexistent stiick-friction.

These photographs show steel tubing used through-out, where as much of the steel tubing has been replaced with aluminum tubing to reduce weight, except where it passes through a Rulon bearing.

Most of the pictures can be clicked on to view high resolution versions.

Dual Stick Installation

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Rulon J bushings set in phenolic bearing blocks are used through out the system to reduce both dynamic and stick-friction.

Fiberglass is used strategically to strengthen the phenolic bearing blocks.

 

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The center bearing is constructed from a piece of one inch phenolic.

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At this time I don't have photos that show how the sticks are connected to the elevators, how the reflexor control hooks up, nor how the wing leveler servo and roll trim attaches.. I'll add photos as they become available. (here is a tease!)

Please note: Temporary hardware (nuts, bolts, washers, etc.) is being use to assembly the system. When finished, appropriate, safe hardware will be use.

 

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