I am putting the final touches on a 40 size stick, and I am about to hook up the wing servo (s) and wondering if I should but one in or two. The way I see it, please tell me if I am wrong, that 2 servos will add the extra weight of the second servo and the added weight of reinforcing the wing for the 2 sevos, maybe a little extra draw on the battery. the pros are less chance of flutter, a little better ability to adjust trim, and a abiltiy to add flaperons and or a little spoilers or crow to the wing (which one does not want to do without research. Am I missing something?

Thanks

Jon

I think you are talking about the quad flaps on a stick, and they are deffanatly worth it. I am flying a Ultrastick with quad flaps, and you may not want the crow anything now, but later you will, my problem is my radio isn't capable of all the things the plane can do (Elcipse 7). but I am looking to get a radio I can add crow to. That helps in flying high alpha flight by "washing out" at the wingtips. I take off with flaps and it reduces the take off roll by quite a bit and really helps on landing. You can also mix the flaps so they act with the ailerons to increase roll rate. I also have a larger capacity battery in it to compensate for the extra servos, and I have an old OS 46 and it climbs strait up with a 11x4. I have a blast with mine and I can't wait to get a more capable radio

I have had a plane with a single aileron servo go in when a tooth broke off a servo gear and jammed it in flight. I have also sucessfully flown and landed 2 planes that completly lost the function of 1 aileron (in one case the aileron came off, in the other the servo linkage came apart) but the other aileron was still functioning. Having 2 servos just makes me feel more secure.

Thanks, that is what I have been thinking, I don't know if I want to put in 4 servos in the wing yet, I guess that I could plan on cutting the aileron at about the 70% if I want to add flaps latter. I am probably going to make this a float plane.

Thanks

one suggestion, if you havent hinged the ailerons yet, and youre thinking of the quad flap mod.... Mark the place where you would split the aileron, and install a pair of hinges there, one on either side of the mark. Then, if you cut the aileron later, you will have hinges at the end already, and you wont have to remove one section to add them....

I vote for a servo on each aileron. One thing to keep in mind, you can do it with a net "LOSS" in weight. Those torque rods are not light. Also, if you use a standard servo, IE a Futaba 3003, is a good all around servo. weiging in at 1.3oz with 44.4 InOz of torque. This torque drives two ailerons. So, if you can use two mini servos like the 3102, you end up with more thant twice the total torque, 53InOz for each aileron, at a 0.1 oz total gain in servo weight, When you factor in the loss of weight for the two torque rods, I'm sure you will loose weight.

I quoted Futaba servos, but I'm sure that there are other Standard vs Mini or Micro servo references that will make it even more attractive.

Don

That is just what I was thinking, do you know if the 70/30 percentage is about right? I need to try to find the right formula to figure out flaps, I probably won't cut them, but I like to have options.

I put a mini in each bay compared to one standard in the middle or one std in each wing. The output is just a few oz's diff and the weight is quit a bit different. In the case of one standard in the middle.. you need to divide the output in half since it's being shared by each aileron. A standard bb has approx. 42 oz/in torque so your looking at 21 for each side where a mini will have 36 aprox. devoted to that one aileron. so 21 compared to 36. and 45 g compared to 16g for weight meaning two minis are less that one standard. it's a win / win for me.

Mine is 22 1/2 with aileron and flap at the trailing edge, the aileron is 11 3/4 inches. What stick type are you finishing

It is a Great Plans big stick 40 kit, I got it from a guy who probably bought it several years ago and mostly completed it, but has not finished it or put any controls in it, so I am going to put servos and linkage in it, hinges and cover and should be good to go, it came with an os 40 sf abc engine, which hopefully will run fine.

Jon

I have a Goldberg Wildstick 40 that has both ailerons and flaps. That's four servos in the wings. When I first built it, it had a 1100 mah NiCd battery pack. It still has that battery pack. I pretty much use it for fun fly events only now, but when I do fly it, I get several flights out of it. I used CA hinges and have had absolutely no problems with them.

The plane is amazing. When I put in full flaps and pull into a loop, it almost loops in its own length. Neat to see. I'm not into 3D, so I have not done any of that, but I'm sure it will do just about anything I want it to do.

CGr.

I got mu Ultrastic almost the same way, only all I needed was to put in a Rx, I have the same OS 46 SF , I need to change the berings in it. I almos fly this plane exclusivly now