boydboy

My Feedback: (3)

Mine is the old Super Cub and it is 1.1od 32.5L and .043 wall, I amm trying to find somthing still in prodution to order a replacement as mine got bent.

mobyal

Try taking the tube to Lowes and finding a match out of all the aluminum tubing sizes that they carry. That's what I did when I bent the wing tube in my 80" J-3, and Horizon was backordered for some unknown period of time. The OD is the critical dimension. If you can find that the wall thickness'll be fine and plenty strong. Whatever they supply in the kit's just a standard tubing anyway. Nothing special.
It took me about 10 minutes in the store to find the right size, buy it and get out. They even cut it to the right langth for me. My recollection is that it cost less than $5.00.
Good luck
Al

Float Grautineer

loiue.. where did you put your 8s pack on elec. h9 cub. instructions mention motor but not batt location. I was going to call h9 and ask?

louierc

Float - I did the install as per this post:

http://www.rcgroups.com/forums/showt...97&skey=bd4f4a

I did a neater job of cutting the former, using a roto-zip (or dremel) and glued a light ply floor in the front area with epoxy and a single screw for safety. Make the floor from 1/16" ply, add velcro in the front and a strap in the rear. I added a 1/4 x 1/2 balsa strip on edge up the center of this to separate the batteries and keep them straight.

Mounting the ESC was a pain, since the wires are so stiff, but I added a small piece of ply in the left front above the batteries and attached ESC with velcro, so I could see it from the door. Ran the ESC wires down the side under the battery floor to a shorting plug cut in the belly just ahead of the former. Then wire up thru a hole in the hatch just in front of the seat. Dean's connector to a Y cable for the two batteries there. It's a tight fit but works.

I installed the radio on the shelf above the servos. I did NOT put the switch / charge jack between the pilot's legs, much too hard to get to, but in the floor right inside the door.

Another trick - to keep the window open (up) for service, I buried a very small (1/4") magnet in the lower rear corner of the window frame, and a mating screw head in the wing. Look at the FS Cub and it has a spring catch for the window to keep it up against the wing when not flying. The door handle is cobbly, I remade with a new piece of wire, longer inside, added a piece of ply inside the door hatch to act as an inside bearing for the shaft, much less wobble, works nice. I used button head allen screws for all the exterior flying wires, cowl etc, they look nicer.

I found that the strut pins are oversize where drilled (dull Chinese bit!) and had to file them down to fit.
Good luck! Louie

louierc

According to Bill Brundle, Cub designer at H9, the 1/4 scale Cub was the last H9 ARF to not have a complete gas/electric install options, now all model have both options fully documented. Louie

mobyal

Louie
Great post re your mods. I hadn't thought about a magnet to keep the window up against the wing. Instead I was thinking about how to replicate the catch on the full scale Cub. One point of clarification, though. The window wasn't up just when on the ground; we often put it up while we were in the air. It was really great late on a summer afternoon/evening to cruise around about 700 or 800 AGL with the window, and sometimes the door too!, open. Could even communicate with people on the ground by calling out to them.
I have the N number of the J-3 my father and I used to own and fly, NC 98538, on mine. Nothing like a Cub!
Keep enjoying yours
Al

louierc

Al - As I remember, the window will stay open when flying, sucked up to the wing. It's a pain then you are trying to work on the model to install batteries, etc. I went to Michael's and found a very powerful 1/4" dia magnet, used the dremel to make a pocket in the window frame, and painted over it with Cub yellow. Marked where it hits the wing and buried a steel flat head screw there.

If you haven't read it, get Rinker Buck's book "Flight of Passage". It's great and speaks to just what you mention about Summer flying. I wish I had the time to find and fly a Cub - they are a little pricey now (I suppose anything with wings is), but what a great ride. You should have kept yours! Louie

sj3cub

My Feedback: (9)

louierc, Oh how I remember the late summer evenings flying around with my father with the doors open going in and out of small grass strips. Those images and feelings will be ingrained in my soul for as long as I walk this earth. To me thats what flying is all about. I need to get the floats mounted on mine.
Regards

mobyal

Yeah. We had ours on a 850 foot strip on our farm in Loudoun County VA.
To this day I still enjoy doing touch and goes on small grass strips.

louierc

Yep, this is what flying is all about, the Cub in your barn and a runway on the farm. Rinker Buck's book is great. Also see "Cannibal Queen" about flying a Stearman across the country with the goal of landing in every state.

sj3cub

My Feedback: (9)

I have read "Flight of Passage" several times and it is for sure a great read. I think I will try and find "Cannibal Queen". I have not heard of it, untill now that is. Thanks for the heads up Louie.
Regards

louierc

It's been a while since I read this, but as I remember the author buys a Stearman and flys it to every state, which takes months.
http://www.amazon.com/Cannibal-Queen...8854143&sr=1-1

Eagle Flyer

My Feedback: (84)

herciberd, spelling?
I fought a similiar problem for almost 3 years on and off till it got bad enough to show up all the time on the ground. It was the receiver. Wouldn't act up on the ground at first.
Another gasser I couldn't get rid of the glitches till I went with a PCM receiver. And I don't really want to hear about all the things to do and check. Did it, more than once. I spent over 2 summers doing it.

jawbuy

My Feedback: (3)

Anyone think the xyz 50 would be to much for this plane? 3 pounds 10 oz with muff and ign

jdkxtreme

Just from what I have read I think it would be. It seems the 20 to 26cc is perfect for the plane

boydboy

My Feedback: (3)

I had the discontinued H-9 super-cub on floats with a BME 50 on it and I had to fly around at idle. It would hang on the prop though I would probly go with a 43 or so if I was to build another. Just my two cents.

OldFart1

Mine flies great with a Zenoah 26. Won't hang on the prop - but then it shouldn't need to..

Mark Piper

Got mine finished...taxi tested....headed to the field

PulseXT40

Don Van Gundy, if the offer is still available I would be happy to take that wing off your hands.

Thanks, Josh

PulseXT40

So how did it go?

GasDoc

My Feedback: (15)

So just bought one because I've got a g20 laying around....I'm excited to get it together next weekend and start flying her.
Any suggestions or tips? I've already read through this thread. I'm assuming it'll balance with the g20 and tank in the standard
location?

b_james

Does anyone have close up photos of your flap mod. I interested how you mounted your servo and linkage. Also I just bought the DuBro 6" bug wheels, but the shaft hole is too small to fit the hanger9 axels. How did you guys take care of this?

mobyal

Just drill 'em out to the proper size. Takes only a couple of minutes and it helps if you have a drill press but it's not necessary.

andy92865

Hi All Ive just picked up a PNP 1/4 scale J3 cub from Hanger 9 and I'm new to gas Ive only flown electrics i have a very dumb question to ask, on the bottom of the cowling there are two fuel lines sticking out one is open like a vent and the other it plugged witch one do you put the fuel in to fill the tank ??? the instructions don't say anything about it
Regards Andy

OldFart1

Andy, is it Gas or Nitro?