OK I got excited your right! a 110 will be too heavy but what about an O.S. .91 2-stroke? or else the O.S. 1.20 2-stroke. the 1.20 is the same size, w/ more power. but my concern is that I dont want it to be over powered wich I think it will be if I put a 1.20 on her.

OHH by the way, I herd that 2-strokes are better for pattern, and sport aerobatics than 4-strokes. and 4-strokes are better for scale, True-False???

You can go the OS91 2-stroke route or save some money and go for the Magnum, which seems to perform just as well.

I don't think you can really generalize that easily.

Some people say that 4-strokes are better for scale because they sound more realistic - but (despite the fact I love my 4-strokes) I believe they sound more like a lawn-tractor than any real airplane engine I've ever heard.

It really does depend on the airplane itself.

A 2-stroke does sound silly revving its guts out in a Piper Cub but then again a good 2-stroke can sound very nice in a fast Mustang P51D, especially if it's ripping the prop.

4-strokes win where you want a very rapid response to throttle such as for 3D flying. 2-strokes win when you want to save some money and want the bare minimum of maintenance and the maximum power.

The bottom line is that *any* engine is better than no engine at all :-)

Thanks X-Jet, Im gonna go with a 4-stroke because I want to learn how to hover, but, the size and brand are my problems. OS, Saito, Evo, YS? do you have a favorate?? and for size, Im probobly going to go w/an 81.

LOL Evolution doesnt make 4-stroke !!! Scratch that!
YS engines look too complicated w/ all them fuel lines.!

Mabie Ill go w/ a Saito 82a, or 91 Do you think that would be a good choice? Im thinking that the 91 will be too much power for this plane (.60 size 57" wing), but I want to learn how to hover it. So I need to know if the 91 will be over powering for this model. flying weight is 6.4-7.5 lb.

You can't really EVER be overpowered. Just the mention of it should get you punished!! Hung, drawn, and quartered seems like a sufficient punishment for uttering such filth . That plane needs at least a 1.25 for 3D power....or even a lot of vertical. 7.5lbs is not friendly to a Saito 100. A .91 2-stroke would be good as well. I do have to agree with XJet about the Magnum 2-stroke. If you're going with a 2S to save money, go Magnum.

OK, well I think im going to do a 4-stroke due to the quick throttle response, but I would love to have a few more dimes in my pocket so how much slower is the throttle response on a 2-stroke than a 4-stroke?

With a high diameter, low pitch prop for 3D use?? Quite a bit slower. I never believed it until I got my first 4-stroke.

Having said that, the delay is either good or great. I don't think that throttle response alone should be the deciding factor. Then again, I'm young and stupid ...so someone please correct me if I'm wrong.

well Im stupid and young so im with you LOL

Here is what you need,, go to http://www.swanyshouse.com/index.aspx Buy a Mojo 60 kit,, build it. it's not hard and a good first time kit so don't let it scare you, I can build 1 in a week covered working 1 weekend and in the evenings after work. Get a Saito 100 end of story....



You will have one of the best planes for learning to hover, it is very tough so the everyday bumps and bruses of learning to 3d won't kill it.
And as you get better it won't limit you[8D]

Here is a video of one that has larger tail surfaces to make it a little wilder http://uk.youtube.com/watch?v=6pKU1LFvlMM


BTW it is a saito 100 This is the wilder MoAss version, the standard is a bit slower and gives ya time to think, a little better then the 40 size plane

Nice that wil probobly be my first kit., although I have a Lazy Ace. but im gonna save that for a few years

some one has a Burrito @ my field, and let me fly it. I have been looking for the kit for months Thanks!!!!!

I'm with Tim if you want to learn to hover then a Mojo is the plane you should be using to gain that skill.

There's just no easier plane to hover than a good profile and the Mojo is one of the best.

The first time you make a mistake with that Yak you'll be picking up toothpicks the Mojo will just bounce and you'll smile.

My Mojo 60 took a dive straight in to the turf from nearly 100 feet when a wire from the battery broke. It went straight down like an arrow and buried itself right up to the wing.

Total damage?

Well the battery came through the wing and one wingtip got a tiny dent in it. Some CA, a bit of covering film and it was almost good as new in under 20 minutes.

Since then I've lost count of the number of times I've dumb-thumbed mine into the ground but I've done no more damage to it apart from the odd broken propeller.

When you've got a near-indestructible plane it makes learning to hover much more relaxing.

And, once you've learned how to hover, you can then show off your skills with a more fragile/expensive plane like the Yak and everyone will be impressed :-)

those mojo's are awesome little planes and easy to build. i think thats a good recommendation for a 3d plane.


xjet: i run 30 percent heli fuel on the YS I have.

Wow... you must be rich :-)

Nitromethane is about $120 a gallon here in NZ so you don't see many YS engines because few people could afford to run them even on 20% fuel.

X-jet, cant you have nitro fuel shiped to you? that would probobly be cheaper.

I have a Parkzone Typhoon 2 3D, ARF, that I am hearning orientation on. I can get into a stable hover, but when I turn right or left wing facing me I trip up, so Ive been pracicing slow rolls, point rols, knife edges, and rolling circles. all the things Im told to do for orientation practice, but I still cant get it.

No, once you factor in our very weak dollar (US$0.58c) and the freight it becomes even more expensive. But, having said that, I've got no complaints about the performance of my 2-strokes or 4-strokes on low-nitro fuel. Using the right oil helps a *lot*.

Yeah, learning which way to push the controls (especially rudder) takes a while but I used some simple crutches to help.

When you're hovering canopy-in, the rudder works as normal. If you're hovering belly-in then push the rudder towards the low wing (a bit like when you're flying towards yourself and you push the aileron stick toward the low-wing to correct).

For knife-edge, remember that if you can see the belly, push the rudder to the nose and if you can see the canopy, push the rudder to the tail.

Then of course you've got to get into inverted harriers which become even more confusing and I simply remember that when I'm inverted and flying away I steer the *nose* with the rudder and when I'm inverted coming towards myself I steer the tail with the rudder.

Practice on the simulator as much as you can and eventually it'll become a reflex which leaves your conscious thoughts free for more important stuff.

But a warning don't practice hovering or knife-edge too much in one direction/orientation. Try to go for a 50/50 balance so your brain picks up the difference.

Once you can react instinctively when hovering or knife-edging at any orientation then things like rolling harriers become much easier because you're free to focus on throttle-control, which is also very important.

The great thing about 3D is that the reward is proportional to the challenge. The harder something is to do, the bigger buzz you get when you're able to do it.

get a OS 91fx with a 15x4 prop and it will hover under half throttle on a 6.5 lb plane. I used 20% nitro. throttle response is very quick and you can make itmore responsive with expo on your throttle servo.

I cant afford 20% nitro fuel, so Ill go at least 10%

[quote]ORIGINAL: XJet

Practice on the simulator as much as you can and eventually it'll become a reflex which leaves your conscious thoughts free for more important stuff.
Once you can react instinctively when hovering or knife-edging at any orientation then things like rolling harriers become much easier because you're free to focus on throttle-control, which is also very important.


I have Real flight G4.5 and I practice on that almost every day

Here are some pics of it so far.