RE: 50cc Sukhette Build Thread, now in progress!!
 

Ouch![:@] Thanks for the warning!!![:@]

RE: 50cc Sukhette Build Thread, now in progress!!
 

I hope my post wasn't taken as a negitive for the plane. I never tried 3D stuff before so I think it was a rookie mistake to pull full up at normal flying speed[:@], I think it says the wings are pretty strong if you can bend a 1.25 inch tube. You can never make something so strong some idiot can't break it, I'm still way down on the learning curve.[&o]

The time before I flew it balanced right at the rear of the D tube at the tips, it flew great. Some times you can go a little to far with a good thing, but you don't know until you go to far unless someone that went to far tells you, so on the back of the D tube is a good thing, an inch farther back.....not so good.

RE: 50cc Sukhette Build Thread, now in progress!!
 

And even then people rarely listen. Most learning comes from personal experience.

TF

RE: 50cc Sukhette Build Thread, now in progress!!
 

Some final pics from today.

RE: 50cc Sukhette Build Thread, now in progress!!
 

Wow! That loooooooks great![sm=thumbs_up.gif] Did you fly her?

RE: 50cc Sukhette Build Thread, now in progress!!
 

Yes I did, I am in the process of trimming her out but we haven't had any really good days lately. I ordered a new DL50 fo her last week, should be here tommorow. The BME is know running perfect, throttle response and Idle are right on the money and spark plug shows shes tuned just about right but she dosen't have the power I'm looking for. The DL50 should fix that for sure.

RE: 50cc Sukhette Build Thread, now in progress!!
 

I had to get rid of the yellow stripes... they were gonna clash with my BUD LIGHT scheme, so I picked up some powder blue TrimCote and replaced the yellow.
I have to pick up some more to do the fuse.
My DL-50 should be here tomorrow, meanwhile I am doing everything else I can.

Jim

RE: 50cc Sukhette Build Thread, now in progress!!
 

just a lil' update to keep this thread going....

Well with the holidays behind for the most part I have resumed building and with a bit of christmas money was able to make my last purchase to finish up my bunny.

Here is a list of things I have completed in a 6 week period.... very slow but keep in mind I am a Paraplegic and everything has to be done frm the seated position with the plane in my lap :D

This is a great plane if you can get past the normal and not-so-normal ARF let downs.

First of all some minor Gripes, and I say minor because being an Engineer ( structural ) I enjoy a challenge and was a tinkerer from a very early age... I always hear the story of how at 2years old I got a hold of a screwdriver and removed every door nob and electrical faceplate in the house in a 2 hour period when my mom starts telling family stories at gatherings :) . These may be minor for some and real headaches for others ...

First small Problem was the landing gear. a couple of the holes were threaded off plumb maybe 3-4 deg . easy fix ... tig em closed and re drill and tap. not every one can do.... but I am sure tom will take care of those that don't have the tools or expertise to work in metal like that.

Second Problem I ran into ... really easy fix. pre-drilled holes for the hinges looked like they were drilled with a dull butter knife ( I probably got a plane that was near the end of the useful life of the Jig bits used to drill out the holes ) . Fix I opened up the holes a bit larger and gorilla glued in some dowels and drilled those with a nice sharp bit.

last problem was a bit more frustrating but worked out fine also ... the 1/4 ply ring inside my cowl was cracked when I unpacked the plane, the cowl itself was round and free from distortion. I decided to use it as it was and this is where things went bad. the holes in the fuse were slightly off and having read in this thread that they were tight but would go together ok I decided to put the cowl on and snug it down..... as I was snugging up the last screw, a loud pop, then the cowl lets loose from the 1/4 ply ring and falls to the floor. Now I am slightly miffed and not wanting to let this plane get the best of me I run down to the local woodworker supply and pick up some cabinet grade 1/4" birch ply and make another ring and replace it. about 4 hours total but I think I could nose my plane in from 50 feet and that thing will still be intact .

well now not too bad 3 minor problems that I am sure tom would have taken care of had I bothered him about them but as I said , I am a tinkerer at heart and love problem solving and I feel if anything that my plane will be better because I fixed it to where I was satisfied with the integrity and finish and that is what counts.



ok with the minor problems listed on with the good stuff. I sealed and painted the firewall ( Black ) and mounted the DL-50 . needed to get a bit more distance out than the stock stand-off's couuld provide so I turned some hardwood dowls down a bit and cut them to 5/16 which has the prop clearing the cowl by 1/4 on the low thrust sides. seems ok . got my fuel tank completed ( 3 hole style ) I a have a question here ... should I use 2 clunks or will it be ok to run a long brass tube to the rear of the tank for the fuel filler/remover line. I have read that 2 clunks can be used but as fueling will take place with the plane stationary and tail low I figured a fixed line to the low part of the tank would suffice... Comments?

Electrical, went with 5955tg's all around as I live by the rule.. buy once buy right. Overkill on this plane for sure but I will be able to use them in a bigger plane when this one is worn out and no longer airworthy, and being that this is my first gasser that will most likely be sooner than later hehe. I did some reading and have made up my own A123 packs, 2 cells balance/charge taps and dual power leads as I plan to operate the Ignition and Rx from a single 2300 mAh pack. through 2 switches. I am sure this will be fine but I will do some testing on the first few flights . Oh I said I made up my own packs. Ill post a picture of the pack but he is a little explanation, I purchased a dewalt 36v Li-on nano ( a123 ) pack new on Ebay for $82 . Inside were 10 cells and this enabled me to make up 5 packs for about $20 each counting the little bits and pieces. so $100 total investment for 5 A123 Li-on packs .. good deal eh?

So now I am getting close to having the plane ready to fly with just minor stuff to do before I start setting end-points and dual-rates and such. I will post more pictures when I move the plane to a friends house to do the final assembly as I just dont have the ability to put the plane together by myself without help .

Just wanted to say thanks to Tom and all the other people here on the forum who's posts have helped motivate me and give me quick answere to questions and how-to's regarding this build


cheers

Don

RE: 50cc Sukhette Build Thread, now in progress!!
 

Well I managed to get mine into the air today, and I just want to thank all for this thread and all the photos in it, it really helped me a lot.

I have attached some photos of the plane at the field, taxing out and starting it's take off run. I have also attached a photo of it in my Ford Focus to show people that are a bit hesitant to get this plane because they think they can not transport in there current car to think again. There is also a photo of me with my new toy.

Cheers
Pupmeister

RE: 50cc Sukhette Build Thread, now in progress!!
 

aaxiss you stated that you were going to use 1 2300 A123 pack for the ignition and RX. I personaly would not recommend this. I could go into a long disgusion as to why, but all I will say is use one of the other A123 packs for the ignition. You will need the nose weight with the DL50 up front.

RE: 50cc Sukhette Build Thread, now in progress!!
 

Nice to hear you got her in the air, Good luck and enjoy.............[sm=thumbup.gif][sm=thumbup.gif][sm=thumbup.gif][sm=thumbup.gif][sm=thumbup.gif]

RE: 50cc Sukhette Build Thread, now in progress!!
 

Those are some real stand offs you got there! I like the anodized spinner. What pipe/header/canister you running? My Yak with a DL50 uses a DA header and MTW75 TD K, seams to like it.

RE: 50cc Sukhette Build Thread, now in progress!!
 

pupmeister

Nice fit of the plane in the car. It wouldn't work in the US because the steering wheel is on the left or correct side!! On the serious side, how does she fly?

Chuck

RE: 50cc Sukhette Build Thread, now in progress!!
 

Back to the wing tube for a moment. I fly my planses pretty hard so I've managed to bend the aluminum tube that comes with any manufacturers plane. I switched over to carbon tubes for this reason a long time ago. The weight reduction was actually a secondary reason. Carbon tubes are quite difficult to bend and will bear a much greater load that standard aluminum tubes. Generally if you have enough load to bend a carbon tube it will break very shortly after starting to bend.

Bear in mind that every plane has a structural limit and wings or fuselages can be broken, not bent, when those limitations are exceeded. Same with full scale. High deflection, high G maneuvers should always be performed at reduced flight speeds for this reason. You won't believe what a full power dive turned into a full power blender will do to a plane. I don't believe it matters how large or who makes it, it's going to come apart in flight, if not the first time, then after a few such maneuvers.

So call Tom and order a carbon tube when you order the kit if you're one of those that likes to use more throttle. No guarantees that the plane will stay together in those situations but the tube won't bend.

RE: 50cc Sukhette Build Thread, now in progress!!
 

I bent mine 1st or 2nd flight, wasnt doing anything hard. I think WH got a batch of typical Chinese tubes, the ones on my Extra were wrung out and didnt give.

RE: 50cc Sukhette Build Thread, now in progress!!
 

Exactly the same setup as you described for the cannister, and at it does seem to like it.

This is my first attempt at giant scale aircraft, with my previous biggest aircraft in terms of wingspan being my Pulse XT, so from initial experience it feels great.

The serious fact about the car is that I was really worried about whether I could actually transport a large plane, since I do not have any place to store a trailer and replacing the car at this moment in time was not feasible. It took a lot of measurements of the car and searching RCU and other RC sites on the net before I was convinced that it was possible and I ordered the plane.

Cheers
Pupmeister

RE: 50cc Sukhette Build Thread, now in progress!!
 

Well I can tell you from experience that the Plane fits in your car alot better than it fit's my wheelchair [sm=cry_smile.gif]

I have a friend that has a well equipped workshop so he will let me store the plane there when not flying and it's not a big deal for me to go over there to work on the plane when making small repairs/adjustments. That way when we go flying he dosent have to come over here and pickup all my junk. We may go in halves on a small trailer and use it to store the planes and haul them to the field. He is going to start on his build soon also, I think he has been waiting to see how mine turns out before he decides, I think he has made his decision to purchase one as he just picked up a JR 9303 2.4, but he hasn't decided on the % yet nor the manufacturer. I believe he is leaning toward a 33% and a comp-arf as he has alot more fundage than I do .

RE: 50cc Sukhette Build Thread, now in progress!!
 

I've got around 150 flights on my Sukhoi. Everything on plane still looks new and plane flies beautifully. I mainly enjoy 3-d flight so I mounted the rear stabilizer in the front tube. That leads to my question. I cannot get this plane to snap. Hoover, harrier, knife edge(and ke loops), spins(up right and inverted), rolling harriers, tail slides....the list goes on and on.....are all fantastic! Do you think the front mounted stabilizerer is the issue or something else. Center of gravity is waaaay back!

Thanks for input!

RE: 50cc Sukhette Build Thread, now in progress!!
 

Check your radio's mixes. My friend had a plane that wouldn't snap and it was a mix doing it.

RE: 50cc Sukhette Build Thread, now in progress!!
 

The plane snaps fine as far as I can recall, it's probably just an insuficient amount of elevator and/or rudder. Usually people use too much.

TF

RE: 50cc Sukhette Build Thread, now in progress!!
 

Thanks Rich and Tom. I do not use mixes, so it can't be that. However, I do have a huge amount of rudder. That very well could be the issue! I will program some of that out on low rates and try again!

Thanks again!

RE: 50cc Sukhette Build Thread, now in progress!!
 

Cross rudder and ailerons at max deflections and she should snap pretty hard.

RE: 50cc Sukhette Build Thread, now in progress!!
 

For a really nice and clean snap you need lots of aileron compared to very very little elevator and rudder. Also when you start the snap you should really hit the elevator first and then knock the sticks into the corners. That breaks the nose up and really gets the snap going pretty good. To finish neutralize the rudder and elevator slightly before you release the ailerons.

RE: 50cc Sukhette Build Thread, now in progress!!
 

Looking at getting this awesome model. Just wondering wat MTW cans will fit in the bellypan for the DA-50?

Cheers

RE: 50cc Sukhette Build Thread, now in progress!!
 

MTW 75