UCANDO 46 - Which 2 Stroke?
 

I am looking at getting a UCD 46 but I am unsure of what size 2 stroke engine would be adequate. I am leaning towards a GMS .47. Do I need more HP?

RE: UCANDO 46 - Which 2 Stroke?
 

It will fly with the 47 but you might want more power if you are planning on hovering. An ASP or Magnum 52 or Leo 56 or an OS 50sx would all be good choices.

RE: UCANDO 46 - Which 2 Stroke?
 

I am running a Super Tigre G51 2 stroke on mine with a 12 x 4 Zinger prop and it will not hover. I had to add a lot of weight to the nose to keep it from being so tail heavy. That may have had something to do with it.

RE: UCANDO 46 - Which 2 Stroke?
 

Personally I have a Saito 91 on mine and like it a lot. The 91 is very close in weight to a 46-50 and is a four stroke so has better low end throttle response and plenty of power even at 5000+ feet. I did have an OS 50 in it for a while and it was fun and would hover OK at almost full throttle, but not like it will with the 91. Main problem with the 91 is cost. The Magnum, ASP and Leo are much cheaper and would do respectably well.

RE: UCANDO 46 - Which 2 Stroke?
 

four stroke best you can get for it saito 100

two stroke os 91 fx or evo 100

RE: UCANDO 46 - Which 2 Stroke?
 

If you want a 2C the .91's are the only real choice. Less than a .61 is not enough and the .91's weigh the same as the .61's so there's no reason to get a .61 2C. The .50's will hover it but barely.

I'd go Magnum .91 XLS 2C or a .91-1.00 4C.

RE: UCANDO 46 - Which 2 Stroke?
 

i have one that im getting ready to build and am planning on putting a 1.08 magnum 2 stroke on the nose this should be a very good combo.

mark

RE: UCANDO 46 - Which 2 Stroke?
 

4-strokes are a must for 3d and tourqe rolling, i have a satio 1.00 on mine, great combo, highly recomended...

RE: UCANDO 46 - Which 2 Stroke?
 

I also have a Saito in mine and agree its a good match. You don't need all the power but on the other hand you don't have to use it either. I'm having a problem getting a prop nut to use with my Great Planes aluminum spinner. I noticed your pic didn't show a spinner. Any suggestions?
k.o.

RE: UCANDO 46 - Which 2 Stroke?
 

I must be missing something on the 4-stroke issue. When I read the Saito specs, the .91 only delivers 1.6 hp. Maybe torque is the issue.

It looks like I should be in the .76 2-stroke class or greater.

Ths GMS .76 @ 2.5 bhp and $100 looks good. That is if GMS makes a decent engine.

Cost is an issue so if the GMS is not a good choice maybe a Thunder Tiger or a Super Tiger would do.

RE: UCANDO 46 - Which 2 Stroke?
 

BHP on a 2 stroke is up at the top of the power band. The 4 strokers have high torque on the low end letting you swing a larger, less pitch prop for 3D. I would go with a 4 stroker for 3D.
Just my .02

RE: UCANDO 46 - Which 2 Stroke?
 

A YS 63S or Satio 82 would be a more appropiate choice for this plane than the larger heavier 91-100 size fourstrokes. Vertical should still be unlimited with the proper prop selection.

RE: UCANDO 46 - Which 2 Stroke?
 

what am i missing here ultra lite engine + 4 to 6 ounces of lead makes a liter plane than a saito 100 perfect cg

RE: UCANDO 46 - Which 2 Stroke?
 

I needed nose weight with the satio 1.00 in mine, not a whole lot, but with everything in stock locations it needed like 3-4oz to get it to the 3d cg.

RE: UCANDO 46 - Which 2 Stroke?
 

The .46 UCD is not a light plane, probably in the 6lb area, but I don't have one to weigh. The YS .63 or Saito.82 are marginal for 3D on a 6lb plane IMO.

I'd go for the .91 or 1.00 4C or a cheaper route is the .91 Magnum 2C


That's just my $0.02

RE: UCANDO 46 - Which 2 Stroke?
 

You may want to try the Tiger Shark .56 2-stroke. It is .46 size/weight and (almost) has .61 power. You can get it from Kangke USA. It works well in my H9 Twist.

RE: UCANDO 46 - Which 2 Stroke?
 

Whatever mine weighed it was plenty light enough, it would float on its wings, hang on the prop at half throttle, and do all the 3d manuvers that i could do.

It is a fairly large "40" size plane you have to keep in mind, something like 900+ squares

RE: UCANDO 46 - Which 2 Stroke?
 

A good 2 stroke 60 size would work well on the UCD 46.I have a 70 FS in mine,weight 5.5 lbs,flys really light and will hover no problem.The os 70FS will rev the 14x4W at arround 9800 rpm and Im pretty sure the 60FX will turn it over 10K.


later


jeang

RE: UCANDO 46 - Which 2 Stroke?
 

I just put a YS .63 s on my ucd .46. To get more weight to the front, I ended up putting the 6v battery under the tank and as close to the firewall as possible. This should be plenty of motor for pulling out of a hover but not sure about authority. The motor is swinging a 14x4W at about 10,200rpm with wildcat ys 20/20 and an o.s. #f plug.

RE: UCANDO 46 - Which 2 Stroke?
 

I have found a solution that has really surprised me. My first Ucan do 46 I was running a OS.46FXH with an APC 11.5x4 with good results. Lost that bird to battery failure in the air. Now I put an OS.50SXH with a 12x4 and Hobbico tuned muffler on the new plane. The plane weighs 5 lb 14 oz balanced at 5 3/4 it is the best combination yet. The plane hovers at half power and comes out of the hole like a 40%er. The heli version of the .50 has a lot more power than the airplane version. And the larger head keeps things in the cowl cool. The carb is built with midrange performance in mind. If you think about it everything a heli needs we need doing 3-D. Stay cool in a cowled in low airflow installation, Excellent midrange and tons of power wide open. I'm at 2000 feet MSL. Another bonus of the heli is you could run 30% nitro with out any fear of the engine not liking it. In fact the instructions say to run 15-30%. I'm running 15% Powermaster in mine. I know it sounds far fetched but I would put the vertical performance up against any U can do set up I've seen yet. The real benefit is the plane is under 6 lbs. This keeps the wing loading so light the maneuverability is unreal. Light wing loading is the best attribute to the U Can Do .46. Once your over six pounds all you have is a lead brick that can go straight up. I'm into airplanes that can fly on the wing not just the prop shaft. Putting Saito 100's on a .46 U Can Do will kill the wing loading. Might as well take up model rockets. They will fly very similar. Jason

RE: UCANDO 46 - Which 2 Stroke?
 

K&B 61 might work well. Same weight as a 46.

Mike

RE: UCANDO 46 - Which 2 Stroke?
 

If you use anything but an OS.50SXH, Tower pipe, and an APC 12x4 your wasting your time, fuel, and airspace. End of story!!!;)

Bob Sawyer

RE: UCANDO 46 - Which 2 Stroke?
 

Guys,
Take the time to read the post Jason posted. Trust me you do not want to put anything but the O.S. .50 SX/H on your .46. Jason and I were both flying ours at the same time side by side and his vertical was twice that of mine. I was running the same setup except I had the O.S. .50 SX aircraft version. There is a huge difference. I ordered my SX/H that same day. Don’t waste your time with all the other stuff. We have done the research for you.

RE: UCANDO 46 - Which 2 Stroke?
 

Dude,
This is WAY too much engine for a .46

FLUTTER!!!!!!!!!!!!!!

RE: UCANDO 46 - Which 2 Stroke?
 

I don't like what I am hearing! LOL

You guys are recommending the most expensive engines out there. My guess is that the GMS .74 has enough power but will have too much weight (about 10 oz more). Although Zippy (above) said he had to add weight to the nose. I really do not want high wing loading, but the darn OS 50 is really high priced.

RE: UCANDO 46 - Which 2 Stroke?
 

Uncas,
Yes it is higher than the other engines, but it's worth every red cent of it. Man you can not go wrong with this combination.

RE: UCANDO 46 - Which 2 Stroke?
 

There are real good deals on super powerful engines. My favourites are the ASP .52 "super series" and the new Tiger Shark .56 I only got the TS .56 recently but like it a lot. The same weight as a .46 but almost .60 power. I think it comes from the same factory as the JEN .56. Handles a H9 Twist 3D with power to spare, and the transition on this engine is pure silk. Kangke USA sells them for $ 89.77. I have a few ASP .52 engines and have quite a bit of experience with them. The are sold by Goldscallop.com for approx $97 .Made in the same factory as Magnum, this is the cheaper brother of the Magnum XLS .52. These engines are VERY powerful, and once they are tuned right they are very reliable. You don't have to spend a fortune for great 2-stroke power.

RE: UCANDO 46 - Which 2 Stroke?
 

K&B 61 is $80, recommended props a 13x6, might swing a 14x4

Mike

RE: UCANDO 46 - Which 2 Stroke?
 

You guys consider $180 buck a fortune for a RELIABLE, CONSISTENT, AND DEPENDABLE engine?[X(] We are talking about a proven engine and reputable company; we are also talking about a 3D aircraft. Sure, go ahead, buy some of those mentioned above, and watch just how much of a fortune you spend to replace and repair your 3D aircraft. ;) Oh, by the way the engine is extremely important when you are trying to hang an aircraft on its prop 3 feet above the ground. Watch what happens when your inexpensive engine dies on you in a torque roll. If you are going to take the 3D plunge, be smart and realize that just because something cost a little more than others does not mean it is over priced. Research and Development cost money! By the way, do not add unnecessary weight to your 3D aircraft. A .91 two stroke [:@] is WAY too much power and weight for this aircraft.

RE: UCANDO 46 - Which 2 Stroke?
 

theres always the one a 91 tow stroke in not to much f'en power or weight get freaken real dude OK use a webra 50 OK cg is a 8 inches back OK add 9 or 10 ounce of lead OK holy freaking wow that webra 50 weights the same as a 91 fx you screw up and try to blast your way out opps you hit ground game over with a 91 fx boom your outa there still looking like new no extra weight for repairs win win ;)

RE: UCANDO 46 - Which 2 Stroke?
 

A .91 size engine on a .46 size airplane? A .46 3D airplane at that. ;) (Smart) NOT!

Go for it! Have a ball! I'm the real idiot here;):D You fly yours the way you fly it, I'll use a little logic and common sense and fly mine the way I fly.[X(]

RE: UCANDO 46 - Which 2 Stroke?
 

sounds good man i'll fly mine with a saito 100 i don't use two strokes for 3d my fx's turn 10,200 on apc 15/6 my saito turns 10,100 on apc 15/6 why use a lite engine and add lead mnfs?????????? call dave brown i'm bolting a 91 fx on my sport cap 232 to it calls for a 58 woo wooo wooooooooooooooo i guise some people drag out of a hover some people pull out of a hover some people punch out of a hover i just like the oooooooohhhhhhhhs when a 5 or 6 pound planes punchs out with a saito 100 on board [8D] [sm=punching.gif]

RE: UCANDO 46 - Which 2 Stroke?
 

A10hog.

Tower has the .50 sx/h at $210 not $180. Maybe they are cheaper elsewhere. This is more than 2x the cost of other engines and not insignificant for me. However you are probably right, this is an extreme application and may require the lightest most powerful engine. I have never regretted buying good stuff.

So the problem is not really which engine but how to sneak this past the wife, hehe.

RE: UCANDO 46 - Which 2 Stroke?
 

There are two diffrent versions of the OS .50 SXH. One is the Hyper it cost $208 the standard cost $180. I have the standard version with ZERO Ballast to get the C.G. at 5 3/4" back. The airplane weighs 5 lb 14 oz. Vertical pull is awesome. The engine is very reliable and if you would like to have a 3-d contest with what ever you can come up with Bring IT. This setup will kick the crap out of any other overpowered over wing loaded airplane. These threads are something else. A person ask what engine to run and then they get an answer that doesn't suit what the person wants to here. Why ask if you have allready made up your mind to run a Chinese engine that will cost you your airplane. Or it may not cost you the plane but you will never hover below 100 feet due to the fact your engine may die at any time. I know I'm making a lot of people mad but there is a reason OS has been in business so long. So go buy a U-can-do .46 put that brick on the nose/ Blubird servos in the tail and run the cheapest fuel you can find. Let us know how it turns out. Oh I forgot 1500 Mah 6 volt Nicad in the rear to balance it out to 8 lbs. Great plan. Let me know where the fly off will be. I cover most of the country in one year. I'm sure we can arrange something.
Jason Danhakl

RE: UCANDO 46 - Which 2 Stroke?
 

haw if you could get it out of the over weighted over powered planes prop wash. dude a os 50 never kicked nothing on a u can do if it did I'd be running one I'm running a saito 100 .a os 50 is ok a a profile no its not over powered any way the u can't do 3d wing loading is what to low mine will harrier without spoilers now

RE: UCANDO 46 - Which 2 Stroke?
 

Uncas You are looking at the wrong engine. Now don’t get me wrong the Hype version might be even more powerful but I was referring to the standard SX-H version. I just flew mine today with the new engine. The engine started on the very first flip ever, and ran like a champ all day. The vertical is unbelievable. You can get the CG right without adding weight. Man trust me on this one, YOU CANNOT GO WRONG WITH THIS APPLICATION. Wing loading is very important with this type of aircraft.

Hey now as for the wife, [X(] dude you are on your own there... I have enough trouble with mine.:D But hey remember its easier to say I'm sorry than to be told NO...:D:D

RE: UCANDO 46 - Which 2 Stroke?
 

prophanger1
This thread is about a U-Can-Do .46, not a cap or a profile. I'm not sure what you are talking about now.

RE: UCANDO 46 - Which 2 Stroke?
 

yea i know its a u can't do 3d maybe mine is built very tail heavy but it takes a saito 100 to get the cg at 6 back from the leading edge oh the sport cap is another plane I'm working on you said a 91 on a 46 plane i did it again engine mounted cg perfect only thing i know is mine is tail heavy with a saito 91 cg great with a 100 8411's every were but throttle 810 g there

RE: UCANDO 46 - Which 2 Stroke?
 

A10hog,

Thanks, I did not notice there was a hyped engine.

I noticed the specs do not show much difference between the sx and the sx-h. (1.80 bhp)

So what type of fuel are you using? Are you running at 30% Nitro? That is the only real difference I see betweeen the two, and maybe that is why it needs the large head for cooling.

RE: UCANDO 46 - Which 2 Stroke?
 

I cannot debate you on the subject of a four-stroke engine. I know nothing about them, but what I do know is the .50SX-H is the way to go for the U-Can-Do .46…