35% Sukhoi Question
 

I recently acquired a WH 35% Sukhoi that was partially assembled but never flown. It's the Tiger scheme but all the stripes have been removed and I will be applying my own trim scheme. The cowl will have to be repainted but the color match was a miss anyway.

It appears as though this will be fine aircraft once finished. I've gone to the WHsite and it seems that the manual is not available there so I need some information from any of you that had or still have your Sukhoi.

I'll be using H9 Pro-Links and ball joints for the surfaces. Does anyone know/remember the correct size I'll need for the ailerons and elevator halves?

RE: 35% Sukhoi Question
 

Bob i would try giving tom a call at wild hare, he is very helpfull and im sure he can give you the information thats needed.

RE: 35% Sukhoi Question
 

I don't have one available to measure so I suggest you do the measuring yourself.

TF

RE: 35% Sukhoi Question
 

Sorry. (not)

Didn't mean to put anyone out. I just thought someone would have the numbers handy. I can measure just fine and will do so. I must have read the forum header wrong.

RE: 35% Sukhoi Question
 

Well I understand your frustration but I also understand WH's. You come on WH forum and ask WH to tell you their measurements so you can use it on another brand plane. Realize that some of these measurements might not be correct as well unless the all dimensions are exactly the same for the planes and thus would be a copy so now WH would be even more resistant to give you info.

Just a thought

RE: 35% Sukhoi Question
 

I have the instructions. Please send me a PM and I will email you. also any other info you mite need just ask and I will answer if I have the info.
My plane flies really well it my very favorite.

Mike

RE: 35% Sukhoi Question
 

Huh? This is a Wild Hare brand airframe. Partially assembled, never flown.

Thanks Mike. PM sent.

RE: 35% Sukhoi Question
 

What did I say?

I don't have the measurements and I don't have a plane to measure from. I was giving a serious answer, I am not able to help. I would help if I could, but I don't have the information.

You didn't ask for the manual, I would have been happy to send it if you had asked. I still would if you send an email to [email protected].

Also I'm available by telephone almost any time. If you have a question call or email. This support forum is unique here on RCU in that it's a cooperative effort, there are a lot of guys on here who step in when I don't have the answer. I was just trying to let them know so maybe they could step in.

Sorry if I offended you.

TF

RE: 35% Sukhoi Question
 

Perhaps I was a little too quick to react. Also in some cases text in these postings don't accurately reflect a poster's intent.

RE: 35% Sukhoi Question
 

After a month of assembling and modifying she will fly today.

Canopy was a nightmare, wings wouldn't go on the wingtube, repainting, etc. This was the tiger striped version and the previous owner had started to assemble it. He had removed all the stripes except for the painted ones on the cowl.

I had to mount a sanding pad on a steel shaft and run it up and down the wing tubes for quite a while but now the wings slide on and off pretty good. They wouldn't go all the way in without considerable force before that.

In the chance someone else picks up one of these for assembly, 1.5" prolinks are perfect for the elevator halves and 3" are perfect for the ailerons. If you mount the rudder servo in the tail a 4.5" prolink is a good fit. I used Dubro 866 control arms with Dubro HD ball links.

I'll have the all up weight and some pics later. DA100 on the nose, Mejzlik 27X10, JR8611 X 2on the elevators, Futaba S9154 X 4 on the ailerons, Hitec 5955 on rudder mounted in the tail. Futaba R6008S Fasst receiver, 2 X 6V 2500 Ma NiMh on the receiver and 4.8v 1700Ma NiMh on the ignition.

It seems light enough. I have the CG about 3/4" forward of the center of the wingtube. About 3.75"at the wingtips. Max throws on everything with some expo to smooth it out.

Supposed to be around 60 deg. today with a 5-8MPH breeze.

K

RE: 35% Sukhoi Question
 

The wing tube carrier sleeves will compress over time and increase in (internal) diameter under the vibration so I never sand the sleeves. Rather I powder it well with cornstarch or baby powder to cut the friction. Usually this is enough to allow the tube to slide into the wing sockets before the first dozen or so flights.

Good luck with the first flight! A friend of mind used to fly this plane (in the Red Bull scheme) in airshows, with smoke and everything. It was outstanding! He felt very comfortable landing on our tiny 75'x350', tree- and boulder-surrounded, grass strip. The plane would just float in for landing nicely.

RE: 35% Sukhoi Question
 

These wingtubes were past snug, they were tight.

Maiden flight was successful if not a little scary. Just got it up and started trimming (1 click up / 1 click r-aileron)and the ignition battery failed. Geez. What's the chances.Made it on the field and landed with no problems. Changed that out and made a couple more flights and I'm starting to get comfortable with it.

RE: 35% Sukhoi Question
 

K-Bob, nice job. What was the final weight of the plane?

Stick2K

RE: 35% Sukhoi Question
 

Thanks. Not sure of the weight. I'm guessing somewhere in the high 26lb range. I'm taking the scale to the field today so I can get an all-up weight.

I'm thinking I'm going to have to move the engine back a little to get rid of the nose heavy condition. I stuck it out there a good ways to get maximum prop efficiency with the big round cowl. There isn't much I can move back inside the fuse. The two receiver packs don't weigh much and they are already behind the CG point. I have the throttle servo out on the end of the engine box but I hate to have to run ny-rod all the way from the back of the fuse.

Sometime this week I will get around to framaing and painting the canopy. I have been dreading that chore since I first saw the canopy. Everyone has that one something they really hate about setting up a planeand that is mine.But it's just not a Sukhoi without the band across the front.

Also you'll notice I marked it as a SU31 even though it was marketed as a Su26. The only cosmetic difference between the two was the curved vs. straight landing gear. The big difference of course was internal. The SU31 used composite material rather than an aluminumtubular structure.

RE: 35% Sukhoi Question
 

K-Bob,

Congradulations on your madien.

Also great job on the color scheme. Looks a whole lot better then the tiger scheme.

RE: 35% Sukhoi Question
 

Thanks! The scheme presents very well in the air and the "piano key" bottom is very visible.

I moved the engine back an inch and moved the receiver batteries back to the rear of the platform and now the CG is spot on perfect. Flies an inverted 45 deg. perfect now.

RE: 35% Sukhoi Question
 

:)This was my favorite plane. It flew excellent in every way. I loved it.
But I crashed it do low hovers and ran it out of gas.
I wish I could get another one.
thanks
Barry

RE: 35% Sukhoi Question
 

Is this a good 3D plane, or is it better suited for precision and IMAC type flying?
I was looking for some video of the plane but didn't come up with much.

RE: 35% Sukhoi Question
 

Others with more experience might not agree, but so far I have about two dozen flights on mine and it seems to excel at both disciplines. I have my CGset at about the nuetral point.

RE: 35% Sukhoi Question
 

It's no longer on the Wildhare site.
Is yours new?

Any particular likes or dislikes?

Thanks
Bob

RE: 35% Sukhoi Question
 

They have been discontinued from WH for some time now. I lucked up and found one new, partially assembled but never flown. Though I have a 102"QQ YAk54, I have always owned and preferred a Sukhoi. I had the SIG 76" SU31 and a couple of the H9 33% Su-31s. A Yakis just a Sukhoi wanna-be. http://www.rcuniverse.com/forum/js/f...ades_smile.gif

RE: 35% Sukhoi Question
 

What kind of surface deflections are you using for 3D, and what's your opinion of elevator and harrier performance?
ie: Much wing rocking or other bad tendencies?

RE: 35% Sukhoi Question
 

The plane does not wing rock unless you're holding some aileron while in a harrier. For baseline flying the "book" deflections at low rates are pretty close to perfect. If I recall correctly they are 12* for elevator, 15* for ailerons, and 20* for rudder. For high rate/3d flying don't use more than 40* of rudder. After that it becomes a very large airbrake. The rudder is extremely effective.

I used 17* for aileron low rates, and found 32* at high rates to be real nice for 3d. I used 20* for elevator low rates because I prefer a little more reaction at low rate elevator than IMAC people do. Elevator high rates were de-tuned from 50* down to 45* because it did not need more than 45*. I balanced at the center of the wing tube for what I felt was an optimum all around C/G. More forward and the plane lands at a higher speed, eating up a lot of runway while slowing down enough to make the landing.

The plane excels in both IMAC and 3d. You only need to pick what you want to do. It's a very strong plane but the main gear does not take well to rough field landings, especially botched ones. If you have the spreader bar that W/H developed for the main gear, use it. It provides a lot of resistance to gear legs spreading during a hard landing.

RE: 35% Sukhoi Question
 

Thanks ;)

RE: 35% Sukhoi Question
 

What he said. http://www.rcuniverse.com/forum/js/f.../thumbs_up.gif

I do have the spreader strap installed. The gear are a little "springy" but I think it adds a little shock damping to the touch down. Very easy plane to land with NO bad habits.