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Archive for October, 2016
Posted by VicT | Oct 18, 2016 @ 01:19 AM | 6,251 Views
I recently noticed one stock Timber wheel leaning to one side. At first I thought it was a bent Dubro axle but on close inspection found that the rubber tire and white plastic hub joint was loose with excessive play. I am very rough on the Timber as I like to make long fast taxi runs. With my axles extended forward I can do "doughnuts" and this puts a lot of side stress on the rim/rubber joint. I filled the joint with E6000 and after hardening over night the joint is much stronger with very little play now....Continue Reading
Posted by VicT | Oct 17, 2016 @ 12:26 AM | 5,885 Views
I wanted to replace the plastic hoist that was sticking up above the wing. It was secured to wing tube spar and was strong but was draggy and did not look good. My idea was to use music wire formed in a U shape that would retract flush with the wing. Using 2 fingers you can carry the Timber to and from the runway. It also can be use to hoist the Timber out of the water from a dock, boat, or beach. A pole with a hook is needed to snag the hoist.
Posted by VicT | Oct 01, 2016 @ 12:22 AM | 6,751 Views
The Timber like most RC models of this size use only one elevator for pitch control. The components include one servo and its output arm, pushrod, wiring, elevator horn and elevator hinge. If any one of these components fail there is loss of pitch control. This leads to an out of control crash into a person, place, or thing.

Since most full size modern aircraft have redundant or backup elevator systems I figured I could do the same using the Timber as a prototype.

Since the Timber servos are on back order I used the RC Group recommended replacement servo (EMAX $5.50) that can be programmed for reverse operation. This feature eliminates the need to use an electronic reverser or mechanical solution when transmitter reversal does not work with your SAFE SELECT RX stabilizer.

The servo is connected to the elevator receiver channel thru a Y cable. To have similar throws the 1/16" ply elevator horn and the servo output arms should have the same dimensions as the stock equipment. The stock elevator plastic joiner is cut so each elevator operates independently. In case of one elevator failure the other remains operational. One half the elevator area means one half the pitching power but allows a controlled landing where failed component(s) can be investigated and repaired/replaced.

To see what one half an elevator looks like inflight I mixed the EMAX elevator servo to the stock elevator servo using it as the master and the EMAX servo as the slave using...Continue Reading