This is probably not right as it doesn't feel like something I should have to do. Also, I am guessing that I need an incidence meter to check the wing alignment right? One thing to add in this regard is that, although the struts were built to match the plans, a little flexing is necessary to get all of the line-ups correct for the hold down screws. What material is best for this? I still have the die cut pattern for the rib and could cut one of different materials, my guess is that doubling up the 1/8 ply w/ a little carbon fiber is a good idea. I am not married to having access to this area as my guess is that it would be a non-issue if I could get the thing in the air all ready.Īre the Dave Brown fiberglass pushrods w/ the 2/56 rods strong enough to avoid flex or blow back? Also, I obviously need to reinforce the strut hold downs.
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Problem also with the existing setup is that the four machine screws holding the gear to the l/g mounts are completely within the airframe, with no access to periodic tightening of these screws, let alone access to fix a possible cracked gear mount in case of hard landing. I could ease up the space required if I could get that ignition system in the tank compartment somehow. What was voluminous with the 91FS got really crowded with the ignition, switch, lead and the motor itself in there. In fact, I hope that I can get it all back in the space of the cowl. But my questions are, too much power? wing incidence? firewall fixing? control surface actuation? Am I on the right track?Ĭonsidering I added a bunch of lead to the front, and with mounting of the ignition unit to the front of the firewall as well, it was all ready pretty crowded up front. I have the feeling that if I can get this thing right, it will be one of my favorite planes. I can send pics of the plane, it's injury, etc. Any other suggestions about the security of this bird would be appreciated. How might I make things strong enough in order to do this? I have a ton of time and dollars in this plane and I am going to fix all of this, try to get it right one more time and deal with it after this. However, with all of this power and a TOTAL lack of access to tank, landing gear and battery access, I would not only like to reinforce the firewall area, but also make the firewall removable if possible. I can cut, or order a new firewall and probably make a pretty solid repair to the injured area.
Good idea? I also have suspicions that the elevator pushrod, with it's split into a y to drive both elevator halves is giving too much blow back, and am going to drive each with a seperate servo.yet another servo. Either way, this is my first bipe and I need to check the wing incidence angles to be sure they are correct and the interplane struts don't change things or cause warps that might add to this tendency, right? Also, I have ordered seperate servos to drive the top ailerons independently. I do not know if this cracked on impact or in flight, resulting in my right correction. I discover upon inspection that one of the interplane strut connection on the lower wing is cracked, making me suspicious when I notice that the right top aileron will now stay in a locked down position due to the flex in the set-up. Now, losing altitude without much to burn, I don't have enough elevator throw and throttle to burn to pull the nose up quickly enough and the plane noses in a bit, ripping the firewall nearly cleanly off the front, mashing my nice cowl work and bending a strut a bit. Results: CG seemed right and the plane lifted off correctly with adequate flying speed, seemed to bank left with acceleration, correcting right, I noticed the problem seemed amplified by acceleration, so I backed off the throttle to get it to correct, which it did, but with a lot of deflection, aileron and rudder. No question of enough power now, I changed the CG another inch forward.
First flight lasted about 50 feet.very tailheavy with CG on the plan location and way underpowered, recovered it in one piece and changed engine to a Homelite 30cc gasser w/ ignition. fabric, robart gear, a 91FS up front w/ more than a pound of lead and this thing weighed in around 14 pounds. Here's the story with the plane built per specs with a smoke system, 21st cent. I hope that someone might be of some advice regarding a troublesome Midwest Super Stearman.
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