i bought a used cub at a few a month or so ago, for 200bucks, hanger 9 piper, 81 inch wing span i think, came with radio, battery, and engine, supertiger 61.

my only complaint is this thing flys forever, yesterday at the flying feild i went off the end of the runway barley or allmost did about 4 times, somehow each time ending up nose down in the ground, just barley, and finaly, broke the prop, that was one hell of a wood prop.
i put the throttle to idle for a long ways, and it still comes in somewhat fast.
i dont have a computer radio so i cant mix flaporions into it, allthough soon i will.

the prop i had on it was a 13X6, for some reasion its sold out everywhere so i went with a 12X5, is this to small of a prop? i couldnt find a 14 near a 5 pitch. not at my lhs anyways.

anyideas on slowing this big bird down would be great.

A 12 x 5 will be fine. If you can't get it to slow down with that then something is wrong.

Try flying it at a high angle of attack to initially slow it down and then put the nose down to maintain flying speed on the final approach.

Also, make sure your throttle linkage has zero play. A lot of times the idle speed is inconsistent because there is play in the pushrod that doesn't bring it back to the same position.

Also, if you can use expo on your throttle, try setting it up so that you have a lot of expo at low throttle. In other words, half-stick = 1/4 - 1/3 throttle. That will give you finer control over low throttle settings.

I doubt they make a 4" pitch prop at those diameters, but I could be wrong. If they do, you might want to order a couple.

that hangar 9 cub doesnt like to slow down. it also likes to nose over I had one (see avatar).

add a bit of tail weight.. this might help or...

what I would do is practice "short finals" as I called them.
it helps if you have a large field.
if you go around add power and bank low to the ground...
fly it low and slow around the pattern (dont worry as the cub is very forgiving when slow) and bring it to final that way.

again it needs a wide field for this... if there are any obstructions dont try it,


or you can try a steep approach by adding some up elevator and "mushing" it down to the ground. this is risky because you are close to a stall here. (even though the stall of a cub is gentle its still not good to try next to the ground.)

last is the slip.

when comming in give it left rudder, right aileron and up. it will "slide" through the air. use the ailerons to keep it at a set bank angle (about 20 degrees) and the rudder with a bit of elevator to steer.

this will kill speed quick. but you have to watch going into or coming out of it as you can tip stall. (release the controls slowly. as you will be slow at the end of this.) practice this up high first to get a feel for how the cub slips. its also good to know how to do to kill speed in a dead stick landing as you cant go around then.

good luck with the cub. I enjoyed mine the entire time I had it.

I would say it is nose heavy. Regardless of where you have the CG now, add a little tail weight.

An easy test is to see if it will spin. Get lots (LOTS) of altitude, nose it up at a steep angle, chop the throttle, and just as it stalls, bring both sticks to the lower right-hand corners (Full Low Throttle, Full Right Rudder, Full Right Aileron, Full Up Elevator). If it spins really good, the CG is probably pretty close, but if it just spirals down, it is Nose Heavy.

If that's the case, shift or add some weight to the tail, and you'll see her settle in nicely.

Zinger makes some 4 pitch props. i know they do 14x4. APC makes a 13 x4 Wide that will run pretty well on a 60.

First, make sure it isn't nose heavy - then make sure you have the idle set low enough. If it won't idle very slow, you need to lean the low end mixture.

After all that, if it still doesn't like to come down, put a 14x4 prop on there. It will give more thrust, fly it at a scale speed, and give more drag at idle, which means steeper approaches.

A .61 is way overpowered for the H9 80 inch cub no matter what you do with props its still going to be a landing floater with the engine running.

A solution that works is to just reflex the aileron adjustment up a bit when in neautral. This will also make the airplane a bit easier to handel as it will soften tip stall tendencys.

In that case, the flat pitch of the 14x4 is what you want if it allows ground clearance. It will be an airbrake at idle.

I had a similar problem with the TF Cessna. It had a ST .91 in it. One solution was to use 50 deg of flaps. THe other was to select a flatter pitch prop to help bring it down. Now I can land it on those days when it's too windy for a full flap approach.

the 14X4 sounds like the way to go, my lhs dont carry much for props like that, i couldnt find anything better than a 12X4 and 12X5
im putting the 12X5 on today.
i might end up ordering the 14X4

thanks guys.

Props aside, you should take some time to practice slow flight up high. Try to fly as slowly as you can and maintain level flight. Then slow a bit more and do slow decents. I don't know that y our landing approach technique has anything to do with your problem, but who knows, you might find you can slow the cub better once you get a better feel for what it does nearer to stall speed.

MinnFlyer's and Unstable's advice is good too. And if you get the hang of slipping, you can really "wow" em at the field. (few guys at most fields can slip in a landing in a controlled way).

I agree with post #4, try adding a little tail weight.

MinnFlyer
i tryed that, and i was able to kinda like snap snin the cub, it does it somtimes, and it would go nose down quickly and do a realy cool spiral towards the earth. defintly the quickest ive seen that cub move. when i could get it to snap into the snip.

I fihured i would add this. I run a 12.25 X 3.75 APC prop on my M-.46, it slows the plane down for landings, isnt the fastest prop, but creates lots of torque, almost hang my superstar on the prop. i guess if you could find a prop like that it would work.

we had this prop on a TH .46, the engine on a really heavy Kadet LT-40. we ran a 11 X 6 on the engine, the plane wouldnt slow down enough to land, traded it around for the 12.25 X 3.75 and it would slow down and land perfect just another example.