Hi,
I'm pretty new tonitro planes and I was flying my Zlin Z-50 (on its maiden) and got radio interference on my 2.4(really! how!) and the plane went down hard. It had a OS 46 in it and that plane zipped around at about 70 mph wide open. I bought a U-Can-Do .46 and I have seen most people put a OS 70 4-stroke in it or a 55-65 2 stroke. Would a 2 Stroke OS .46 be ok? I mean for like areobatic moves like snap rolls and loops and rolls etc.
Thanks!

Yep, may not be enough to hover but it'll do great on the basic stuff as long as it's not the 46LA version.

I have an older one with a 46 on it and hes right they will hover for a short moment and will not sky rocket out of it . but other then that they do vertical lines fine
short takes off easy landings fun flip floppy stuff all day long


remember A u can do is not a pylon racer , wide open dives will bite ya 8 P


also they are fun planes nice and big easy to see elvon cupleing works great for some wicked watter falls and such

It's a 46 AX Thanks!

Should work great. Watch out for flutter as zachary mentioned above. They don't like too much speed.

Hummm  a OS AX 46 .  the hp is the same as a LA 65 ,or a 4Stroke 91. I do not think a AX 46 will have the same tork. <div> I know a 4 pitch prop will give you unlimited vertical and save the plane from flying to fast, but you will need a 5 or 6 pitch to do a nicer knife edge.</div><div>
</div><div>Yes !  Do IT!    Note :  this plane will last longer if 3 D rates are not used .( it will  be easier to learn to hover on high/med. rates anyhow.)</div>

this is false

fly the plane on high rates just make sure your expo matches your skill and preference


if you follow 3d alot you'll find some times ppl crash do to being on Low rates and not having the throw in a stalled type flying situation to recover ,

for example recovering from a Hover . you might find yourself in a inverted harrier and you want enough to be able to hold that HIGH AOA . on tell your at a safe attitude .


the 46 ax with whatever prop isn't going to you unlimited vertical in this airframe . but that doesn't me it' isn't still a fun flying plane that is easy on the sticks

A .46 will be okay for sport flying but not for serious 3D. I would not even put a .55 in it. I would be thinking OS .75 or Saito .82? I am not a 4 stroker. The wing loading is ridiculus low - the .75 would be fine.

I had an OS-50sx-H heli engine in mine and it really lacked pull out.

The build on this is going very fast! The Max of a 2-Stroke is I think .55 or .60. The max for 4-stroke (according to the instructions) is .70.

So why cant a 46 size , have a 46 engine?

Expansion pack 1  for a Real Flight Sim has the 60 UCD . Try it .

Yes Ive often wondered about that myself.

I have a .46 GP Eagle 580 Matt Chapman and I have a 55AX in it butt havent flown
it yet (not enough skills yet) and some say it will not have enough power.

No 3d for me just sport flying so I think the 55AX sould do for that.

Jimmy

The .46 will not be a good choice for hovering. I had an OS .50SX-H (not hyper) and it was lacking. I would consider a Saito .82 or an OS .75. The plane will fly with the .46, but who wants to just sport fly a UCD?