Hey all,
Just about ready to maiden the cub. Was wondering what you cub owners did to set up for fueling the engine? I'm dropping in an OS 61 MAX FS mounted 90 degrees to the right of the aircraft with a Bisson exhaust. Are you using a Fuel T? Fuel dot etc...
One final ?? on the wing struts. Where and how did you check the main wing incedence? Manual shows measuring incedence with wing mounted to the fueslage/aircraft up side down and resting on the top of the wing. Apparently the big concern is verifying that there is no twist in the wing prior to making the final strut connection at the wing. I have a general idea of how I think I'll check it, but I'm sure some of you here have a proven method that works. There has to be a way other than spending 60.00 on the GP incedence meter, although it a sweet device that would certainly make checking the incedence and throws super easy.

I have one of these in my KMP Husky mounted right where the fuel level indicator would be on a cub.

http://www3.towerhobbies.com/cgi-bin...?&I=LXEXX1&P=7

It works out really well, because if the tank is above the carb like mine is, it puts a "high" spot so you don't get the flooding that sometimes happens.

I made a bracket out of light ply so it would sit just inside the cowling, then glued the bracket too high.

Not too bad though.

I have the same one on my Giant PT 19 and stinger. Was thinking it might be a little large for the cub, but jsut might work out. Will see when I get home if I can make it work. Thanks

Hi!
Decades before I bought the Robart incident meter I used a very simple method to check if the wing was twisted or not (Wash-out or wash-in).
Just look from the tip inward towards the wing root...change focus back and forth and you will see quiet easily if the wing has wash-out or not!
Wash-out is good to have...wash-in is not!

Thanks, The more I read the manual the more it makes sense. I attach the struts center point to the fuselage then the forward strut arm on each wing. Measure or eye ball incidence, if all looks well, then mark the strut rear arm location for drilling, then attach the rear strut arm to the wing. I'm assuming the at the wing could twist when ap[pling pressure to the rear stru when attaching. I will attach the rear with the plane up side down on a level surface covered by short carpet. This procedure should keep me from twisting the wing while I attach the rear struts.

Measuring incidence is easy. Place the plane on a flat surface as long as the wing or as long as you have. Tape measure or ruler up to the wing surface. Worked for years before I got a meter.

A 2-stroke in a Cub?[:@]

Damn jar heads!

Ha!! yeah, had it laying around, thought it would be a good fit, with the bisson muffler it will be ok. unless your willing the send me a free 72 or 80FS[8D]

'nuff said

i have a 55ax w/bisson muffler and os f plug on mine will hover knife and do the tightest flat spins and fly off floats wouldn't think of putting anything else on it.when i only fly circles "rarely" it will fly 28 min on stock tank. put that in your 4 stroke and smoke it

My understanding of wing incidence is the upness for downness of the the wing as it sits on the fuse in relation to the centerline,not the twist, I'm building the 40 size cub clipped wing version andputting a magnum 70 4 stroke in it with working landing gear

What you can do when checking for twist is place a long something.. dowel... rod or anything else you know is straight on the flat bottom and see how it looks. The long rod, etc will accenuate any twist. This can be with the plane right side up or down.

I put a fuel dot on top in front of the windshield, right where the fuel cap/guage would be on the real one.

I have the same engine in my decathlon, and you are correct. It will hover, punch holes in the sky forever!! The stock tank that came with mine, looks to be @ 8 0z's. I bought a 10 oz to put in it. I'm little concerned about it setting too far below the carb. Will have to see. All I have left to do is install the fuel tank, and wing struts and it's ready to fly.

If I read the directions correctly, they say to use the incedence meter at the fuse, then move it to the outside edge of the wing, making sure it stays the same while screwing in the rear strut on each wing. I plan on using 6/32 brass inserts with allen screws for the wing struts. Wing fits very tight onto the fuse, I'm thinking that twisting the wing might be a bigger issue. Wing span is 81 inches.

i used a fuel dot on top and one on the bottom. fueling from the top, air and excess out the bottom. works like a charm! you can see the one on the top but the one on the bottom is not visible.

i've used refuelers before but never got them to work well with 2-stroke engines. with 4 strokers the fuel is pulled easily into the engine but with 2-strokers the need for the exhaust to push the fuel to the engine may be an issue. the refuelers (including a few from dubro and some china-made copies) tended to let in air after a while. just my experience.

if you want to be safe and don't mind compromising the looks, this setup from WM is excellent.

http://www.theworldmodels.com/para/p...id=74&subcat=0

i used it before on a squint scale before but find it a bit too obvious for my other planes.