RCU Forums - View Single Post - would a carbon fiber rod be strong enough to hinge a removable rudder?
Old 06-22-2011 | 05:05 PM
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rcflyer4fun
 
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From: Plainfield, IL
Default RE: would a carbon fiber rod be strong enough to hinge a removable rudder?

Well I was able to get the plane down to 11#3.75 ounces. I decided not to use a carbon fiber rod on the rudder. I don't believe the 3 grams I would have saved would be worth it if it were to break! I thought there might be more weight there than that.

I set up my CDI to run off the reciever pack. The elimination of the second battery saved 88 grams. The loss of the second switch saved 21 grams. I was able to lose 17 grams in extra wiring in the plane. I cut off the deans connector and shortened the wires off the battery to what was needed. I got rid of the heavy duty wire extentions to the aileron servos. I was able to remove 28 grams of extra padding I had wrapped around the CDI unit. I shaved off about 15 grams in fuel tubing. I didn't realize just how heavy padding and fuel tubing really are. I had some thin fuel tubing I used on my vent line. I was also able to save 2 ounces by removing the wing spring in favor of nylon bolts. I hope the fuselage can take the strain of gut wrenching snap rolls.

I flew the plane last weekend but ended the flight short due to an engine problem. I was able to complete a few basic trim manuever checks like the power off downline and knife edge flight in both directions. Plane tracks very straight in all those manuevers but I had to put in quite of bit of down elevator trim to achieve level flight. In straight inverted flight I have to hold in some more down elevator to keep it level. I feel this is more than I should need with this trim condition. What do you guys think I should adjust to get rid of some of this down elevator trim? In my power off downline it tracked very straight but it might have a super slight pull to the canopy maybe. In knife edge very straight both directions.

Hopefully with weather permitting I will get a few more trim passes in and report back. If not I will have to fly the Angel Shadow at the contest this weekend.