Steve Pierce
BENEFACTOR
Graham, TX
Come on Kase, what a ya think?
Not my cub so take my pirep for what its worth. Owner is out of town for the month and gave me the keys and said try it out. At 4200 density altitude with no wind touch down was 34-35 mph on the gps carrying power. Touch down is in 3 pt attitude not the tail wheel being 2 ft lower than the mains. Wheel landings worked good at 42 mph using the gps for ground speed. Does fly slower with out as much AOA as it did before.
Installed cost around 10k. Cost you about 2k for every 1 mph slower your going. Cub is stock except for vgs, gear and fwf. Only has 1 becker com. No thrustline, ext baggage, map pockets X bar etc. 1040 lbs empty weight on paper.
Not my cub so take my pirep for what its worth. Owner is out of town for the month and gave me the keys and said try it out. At 4200 density altitude with no wind touch down was 34-35 mph on the gps carrying power. Touch down is in 3 pt attitude not the tail wheel being 2 ft lower than the mains. Wheel landings worked good at 42 mph using the gps for ground speed. Does fly slower with out as much AOA as it did before.
Installed cost around 10k. Cost you about 2k for every 1 mph slower your going. Cub is stock except for vgs, gear and fwf. Only has 1 becker com. No thrustline, ext baggage, map pockets X bar etc. 1040 lbs empty weight on paper.
Ed, here’s another thread to review. http://www.supercub.org/forum/showt...)-Flap-question-Needing-more-tension-some-how
Mine are 112”. First notch flap speed is 60 mph. My first notch is a baby step. The second and subsequent notches require considerable effort to pull even using 40 mph as a target speed. The effect of the second and third notch is like using a lever to roll the nose down. How your cables are rigged willl determine how much actual deflection you maintain at landing speeds. Mine seem to be doing okay as I learn to slow the plane adequately. In my Cub the top pulleys are attached to the relocated upper longeron. The cable tension was great enough to flex the longeron and that contributed to the flaps “blowing back” from reduced cable tension. We added a brace leg to fix the deflection. The point of that comment is that the cable tension is high with these big flaps. How your pulleys handle it is worth consideration. My own pulleys are all braced to prevent flex and ultimately breaking the attach welds. At the end of the road? The flaps work great. With my slatted wings they allow very slow speeds at a normal approach attitude. Two thumbs up.
I found that with the shortened flap handle that last notch can be very difficult to pull above 50 -55 mph. I had a flap assist handle fabricated that greatly improves activation. I can even get them on in the 60 -62 mph range. My flaps are standard length flaps on a 1954 PA18 L21B
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Agreed! Also, has anyone used them on floats?A Pacer could use them.
Gary
if it takes more than 2 fingers under the flap handle to pull them on, you are going to fast to need to deploy them for how you are loaded, for that next notch.... is what i was taught
I must be missing something. I can not visualize how the L on the flap handle replaces the original length. Perhaps a better grip but not more length which will improve the mechanical advantage.Essentially by adding the sleeve, you are keeping the flap handle the original length and yet keeping it out of the way of your leg giving you full aileron deflection to left during a left crosswind landing.
I must be missing something. I can not visualize how the L on the flap handle replaces the original length. Perhaps a better grip but not more length which will improve the mechanical advantage.
I think that I get it now. You physically can not move your arm back far enough to engage the last notch of flaps due to the tight space between your body and the side panel. So the L extension is really just pushing the lever further aft The force required isn't any less, you just don't have to put your arm behind your back. I assume that you push the release button with the heel of your hand rather than your thumb.
Those "Killer Flaps" looks amazing. But I cannot convince myself spending 10K Cdn$ yet... A guy could maybe built himself something similar for way less.
I'm going to agree with this. I don't think it changes the force in retrospect. I asked Airframes if they could make a new handle with a bend - no can do - has to be same on certified plane. Since this is just a grip that slides on it was the best solution I could find and it really helps.
we used to heat and bend every flap handle more to the side when we shortened them 3".....
You have obviously not looked at the amount of sheet metal and machine work that went into making these flaps. There are complex bends in the sheet metal in the first and second segments that have to be made to have all the contours correct so they nest nicely plus the leading edge bends. Then there is the geometry of the vane hangers/extenders/linkage that makes these things work properly. It's not that you could not do it but if you value your time I don't think the price is out of line.