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| Fixed Wing Discuss fixed wing aircraft. |
Topic Review (Newest First)
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| 08-21-2011 07:46 AM | ||
| OLD PRAIRIE RED NECK |
Re: Beaver Maidened - Video!! Really nice beaver Poffit! They just look right on floats don't they! Had to just sit here & admire it for a while! Could see it in my mind's eye coming in for a landing, flaps down, 120 just ticking over, lower, lower, gentle touch, water spray, floats settling down in the water, throttle up a bit & taxi over, 2 wakes with bubbles rolling up to surface. In the sunset! Yes! What a day! Sorry! Got carried away! |
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| 08-12-2011 11:56 PM | ||
| Poffit |
Re: Beaver Maidened - Video!! Hi Dean Remember me? You and Flytwice helped me out in you build thread. My Beaver is finnished and has been flying this summer. On it's maiden the tail seemed to be hanging down at first. But it was not pitchy like it was tail heavy. I usually trim a little up elevator on the maiden because I would rather fight a climbing plane than a diving plane. After I trimmed the elevator back down the tail moved back up where it should be. Mine is balanced exactly 3" behind the leading edge, which puts it just aft of the spar. I did add one washer worth of down thrust and 2 washers worth of right thrust. I think your wing incedence would have to be alright because it was set on the side of your fuse with the plans. With flloats and 120 4s plus aluminum engine mount and a few other mods mine came out to 16lbs. So your planes wings should be able to carry what yours weighs with the tail level, no problem. I am not experienced enough to offer a lot of advice, but if it were me, I would start playing with the down thrust. Pat |
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| 08-08-2011 03:03 PM | ||
| flytwice |
Re: Beaver Maidened - Video!! COG should be right on the wing spar, 3" I believe. The short coupled Radial may very well require nose weight to balance. I really suspect you need the negative incidence in the elevator to correct the issue. this is from the centre datum line of the plane, not off the main wing, which I think I remember as being 1 to 1 1/2 degrees positive (leading edge up). Whatever you have on the elevator, I'd lift the leading edge about 1/8". I know its a pain, but the reward is waiting!! flytwice 
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| 08-08-2011 12:49 PM | ||
| dean2287 |
Re: Beaver Maidened - Video!! Quote:
I like your suggestion, I'll give it a try. I know that the Beaver is designed for a ton of lift, capapble of STOL, so it's likely that I have too much power for a scale ascent. I can see why Unionville says even a .60 will fly this bird. |
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| 08-04-2011 10:28 AM | ||
| flytwice |
Re: Beaver Maidened - Video!! Hi dean: I just had a couple of flights on my 96" Turbo Beaver. It reminded me the need for rudder in turns. Up elevator is required for almost all turns, a standard for high wing planes. It take it that using 30% flaps is to slow the plane down. Might I suggest you change the prop to something with a finer pitch, even if you have to go up in diameter to load the motor. My TB flies at max 55 mph, 1/2 throttle is likely around 30-35mph. Your Beaver would slow down 10 mph (approx) with each 1" less pitch. You do have far more power than really needed. A lower pitch would also help the plane slow for landing. Mine will slow to 15-18mph with flaps (at 15lbs), yours should go just a slow (its lighter). Without flaps, does the plane climb when throttled up? Mine did originally, so I changed the elevator stab to 2 degrees negative pitch (leading edge higher than trailing edge). It had one degree, two settled it right down. The TB is still my biggest plane, I initially found it very intimidating, more flights proved it a really nice flyer! FWIW flytwice 
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| 08-03-2011 11:07 PM | ||
| dean2287 |
Re: Beaver Maidened - Video!! More flying with the Beaver today, and I think I'm getting the hang of it. A little rudder and up elevator into the turns, a little aileron correction out. Makes for some nice looking maneuvers. I'm still flying with 30% flaps all the time, but it flies great so who cares. I love the Super Tigre G-90 on this model. You can fly all day at 1/2 throttle or less, but push it up and you can climb almost out of sight. It can even pull a big loop with the Beaver. Very consistant starting, idle, and throttle response...just a bugger to get set up and broken in! 
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| 06-28-2011 06:57 AM | ||
| OLD PRAIRIE RED NECK |
Re: Beaver Maidened - Video!! Quote:
I had a small sport plane once that I over powered & it would do a loop on take off with full down elevator if you applied full power! Yes it was a flat bottom/high lift wing. My fix on that one was to put a 1/4" block under the trailing edge, that tamed it down to a steep climb under full throttle! But it was controllable! So - if it's over powered you just don't use it all - right? No! Too much fun, so I did the predictable! Flew it to destruction! |
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| 06-26-2011 12:02 AM | ||
| dean2287 |
Re: Beaver Maidened - Video!! Quote:
The guy at the LHS suggested that it could just be acting tail heavy with too much throttle. As he said, the Beaver was designed to have a ton of lift, and it gets accentuated with speed. I still fly it faster than I should just because I worry about a stall. |
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| 06-25-2011 08:57 PM | ||
| reo |
Re: Beaver Maidened - Video!! Quote:
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| 06-24-2011 10:37 PM | ||
| OLD PRAIRIE RED NECK |
Re: Beaver Maidened - Video!! How much down thrust on the engine? Or did someone already cover that? |
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