triumph02002

I'm getting ready to build a Sukhoi 26 with a 72.5" wingspan. I think the motor that I'm going to use is the Evolution 1.00NX.
If anyone has built or knows of problems with this build I would like to hear from you. Any help or suggestions would be appreciated.

Thanks

CARS II

My Feedback: (7)

Reinforce the landing gear mount, a cowl from Fiberglass Specialist is what I used in mine, but the gear mount is what I remember that need some attention.

DGrant

My Feedback: (4)

There were 2 versions of this plane that I know of. The first version had the landing gear in the wing, the second had a landing gear plate just in front of the wing.

I built the first version many years ago. Not the best design, really just because of that landing gear. The newer version was much easier to handle from what I gathered. Mine was an excellent flyer though once you got the wing on... which is one piece... and builds very strong and light.

I have to say that engine is a the small side of the scale though... way small. If memory serves that was a 1.20 specced model... which even that was small in my opinion. I put a Moki 1.80 in my Sukhoi, and it was perfect. Very strong flyer, fully unlimited. I can't imagine that plane with a 1.00 glow.. that's about 16cc I believe... I wouldn't even venture that if the plane was built as light as could be.

I also remember replacing the cowling, and the under-cowl(under the wing).. with fiberglass components... I'm sure I went with Stans.. but they're gone, so check Fiberglass Specialties if you need. If it's a newer kit, the cowl components were better then what I had in my first generation Sukhoi... which mine were ABS if memory serves. Goldberg came out with some newer composite/fiberglass material they put into newer kits.. so its hard to say what you have.

So yeah... I would question the choice of engine. It's a real nice plane when built well though... no doubt about it.

DGrant

My Feedback: (4)

Come to think about it... that plane would do very well with a new generation 20cc gas rig... or a 30cc if you're daring. That would be sweet combo... really either one.

triumph02002

I have the version with the landing gear built into the wing. Would it be better if I moved the landing gear in front of the wing? I was looking at the box and for the motor it calls for is a .90 2-cycle or 1.20 4-cycle, and I had a 1.00 glow I didn't have a plane for. I do like the sound of going to a 20 cc gas.
The box has the weight coming in at 8.75 to 9.5 lbs, that sounds a little light.

Thanks for the information, I will try and post the build of the plane.

Any other problems you think of would be helpful,

DGrant

My Feedback: (4)

That's a very light estimate in my experience. I know mine weighed at least 12-13lbs.. maybe a tad more.. not much though. I have ran across a few builders of this plane over the years, and the census was to move the gear to the fuselage. I wish mine would have been on the fuselage... as I built it per plans with the exception of the engine size..(and a few other things).... and my inner landing gear spar split and I had to do some surgery on the inner wing/landing gear spar/blocks to repair/splint it... so yes... I would say do a little fabrication and move that gear forward. Especially if you go with a 20cc engine, as I'm pretty sure it was the weight of the 1.80 that did mine in. It never broke again though once I fixed it. Another nice thing about having the gear on the fuse is you can sit the fuse on the table ON THE WHEELS!! Haha.. Mine could never sit on the wheels as the wheels(except for tail wheel).. were on the wing... and the fuse is somewhat round on bottom too with the front cowing shape.. You'll still need a cradle to mount the wing and lower cowling... but that's no big deal... that just comes with the "one piece wing" territory. I've still got a few larger planes in the 78"-80" range that have one piece wings. I'm used to it... and frankly they fly very well and stable.

TNT landing gear will have some landing gear to fit your plane I'm sure, You will have to figure out which one, but you'll do fine with that... or if you want some really trick carbon fiber gear try Graphtec. Just Google either one and you should find their sites. The TNT gear is reasonable price, the Graphtec is unobtanium expensive stuff... I just price some gear for a 33% plane and it was almost $150... almost what I paid for the whole plane... haha.. So I'm going with TNT.

I actually think the 20cc would be fine... but seriously think about the 30cc also.. It's really not that big of a jump. That older Sukhoi is way overbuilt compared to planes of today... very much so. It's also a very stout well built plane when done nicely.

I also just rememered, I put the elevator servos in the rear... I used dual servos on the elevator as well.. and my rudder was pull-pull. If memory serves, they have you using dowel pushrods (??)... can't remember exactly on that.. but I didn't like that type of pushrod set up.. .. I do know I put the elev servos in the rear in anticipation of compensating for the weight of the engine... and my Sukhoi didn't need any additional weight.. balance was achieved just by shifting components.

I'm betting it's been 20yrs since I built it... but some things are coming back... haha... I'm just sure of how I built mine, moreso then the details they instruct.. but I really don't remember doing anything extremely radical.. but the few things I've mentioned really made it seem special, and somewhat current in design(at least for that time).. It was a great plane.... and was actually a very stable solid flyer, and landings were very typical aerobat... just keep a tad of power to it, and fly it on down, chop throttle a foot over the runway... light flair, and you're down.

So yeah.. .post some pics up, or change the title of this thread to a build thread and throw some pics up here.... or if you do a thread.. link it here... I'd like to see your plane and progress. Have a nice evening.