Ideas, I got one a showtime 50 the other, but when I got to installing my evolution .61 NT I found out it doesn fit, does anyone have any ideas on making it fit

I have 3D'd this palne with that engine. The answer to your question is YES. However.... With an APC 14X4W, it hovered at about 3/4 throttle...maybe a bit less. Pull-out was sluggish at best....and you have to know, about a second in advance; when you will need power. Spool-up was quick, but not as quick as gas.

My point is, YES it will 3D and it's not a 3D monster. I think this plane is perfect for transitioning to gas....I flew 20+ gallons of glow through this plane and have since moved to gas...well, gas and Charger foam.




Good Luck!!

apc 16x6 is right at half trottle

14 x 4w is awfully small for a 125...i had a 15 x 4w on my saito 82 in a funtana 40 and it worked fine....despite some people thinking it was overpropped but then i changed to a 14 x 4w and it was better....a 125 should have a much longer prop than a 14inch.

Prop Range: 15x7 - 17x6 according to horizon's website. i would think a 16 x 6 or a 17 x 5....

i have a showtime 4d 90 with a ys110 in it with an apc 16 x 6 and its lots of power....unlimited vertical on cool power 25% heli and pulls out of a hover with authority. i really like the ys because it is light and has much more power than the 125.

WHY DO I KEEP DOING THAT?

I meant a 16X4W.

Anybody running a small gasser on this plane? I'm thinking about getting one and would really like to put a gas engine on it but would like to hear some results from anyone that's done it.

rtn9105:

Like I just posted on the previous page, mine has a BCMA 26cc on it, and it flies great. It is a little heavier than some of the 4-strokes you can put on it that these folks are talking about, but I moved the battery to a tray farther back in the fuse, and it balances perfect, (a little tail-heavy is perfect for me). It has unlimited vertical and nice pull-out from a hover. I'm using a Xoar 18X6 prop, which I've found is a great 3D prop for this engine. I also used an APC 16X4W, which had it turning a little over 9000 RPM's, which was good for break-in, but once it started developing its full power I had to go bigger to keep from over-revving.

One thing to keep in mind is that the gas engines take a good 2-4 gallons of fuel for complete break-in, and after that they develop their full power potential. The nice thing about gas engine break-in is that it is done best in the air with varying throttle settings. So, you mount it and fly it. Another nice thing about gas engines is the cheap fuel. They also burn fuel about half as fast as the equivalent glow engine, so you can use a smaller tank to save weight.

Hope that helps.

-Pat

well i bought a showtime 90 yesterday, and just to say, WOW!!! What a excellent kit.

Are there any bad habitats that this plane has?

dont stall it

mine tip stalls to the left bad

well......it snaps pretty bad....if your going with much speed and pull up elevator it snaps....and it does it inverted to....other than that i love it and its still pretty predictavble and easy to get used to...i dont find it stalls at all though....

On high rates she will snap hard just thinking about it if the CG isn't set right. Other than that the ST flies very nice is setup well. Make sure that you check the incidence of both wings and the horizontal stabalizers. Several within this thread including mine were off ( mine were 1.5 degrees off from each other). Once set up the ST flies like its on rails on low rates and really gets after it on high. Your going to like it. What are you putting in it for an engine? I replaced the OS 120 that I had in it originally with a Saito 150. Let's just say that power is not an issue!

i'm running a Saito 125, swinging a 16x6 APC.

Is your C of G Same as the one on the manual?

Does anyone know where i can find a Video of the showtime on a Saito 125?

Thanks
Jonathan

i have a video on this plane...it is at http://www.youtube.com/watch?v=smaw2tYHZ0k
some of the music is rap so a bit harsh but some is finger 11 and stuff to. it is with a ys 110 apc 16 x 6 prop and 15% nitro....ive since upgraded to 25% which is worth the extra money. the other planes in the video are an extra 260 and a yak. it is all taken at our club in alexandra, pei Canada.

Is that you flying it Stephen? If so, you're good =)

I still like my ST a lot, even though I've had a few larger, more pricey planes since. Right now it's grounded due to an ignition defect, (I'm running gasoline in mine) but the turn-around time is only a couple weeks so I'll have it up and running again soon.

You really can't beat this plane as a mix of pattern and 3D. I've done some of the most impressive hovering, torque-rolling, and rolling harriers with this plane that my club has seen, and then I won 1st place in a pattern competition we hosted WITH THE SHOWTIME!! I'm not really that good, but if you set this plane up right, it really is the best of both worlds and can make you look better than you are... =)

where is the best loacation for the CoG?

Thanks

i dont have an exact measurement. but...........its way more tail heavy than what hanger 9 says. i have my tank rite in front of the wing tube ( cg shift is less as tank empties ), battery behind, rx behind, throttle servo behind, rudder servo in the tail. basically just fly it how the manual says to get used to it, then change things. try moving the battery back. perfect balance for me is where it needs little to no elevator input flying right side up or upside down. to see if it is balanced, just roll inverted and pitch the plane at a 45 degree angle into the wind. if your nose drops, your nose heavy, if your tail drops your tail heavy. the more tail heavy you go, the more effect your elevator will have so be careful of that. it may be a bit different taking off. so just keep the low rates reasonable.

just dont make it to tail heavy. tail heavy planes fly like $#!%. a plane will be more stable the further forward the cg is. as you move the cg back, the plane may become less stable at low speeds, and the elevator effect will change. that's why manufacturers give a nose heavy cg, so that the elevator is easy to control, the plane will float more, and will be more stable. But this cg is not intended for all types of flying and adjustment is sometimes necessary.

this plane is awesome and you will love it!!! it handles wind very well because of its thin wing and looks really cool with the long swept tail. The covering is also cool on it,

Well i finished the build using a saito 125, with 3 servos in the tail. But i still had to add 80g's of lead to the tail, has anyone tried that before?

Thanks
Jonathan

I recommend moving your Rx pack as far back in the fuse as possible and secure it there using a ply tray or some other method. You can then get rid of some of the extra weight. Just make sure you use a heavy duty extension to the battery.

-Pat

anyone else tried putting 80g's of lead to the tail to balance it at the recommended cg with a saito 125?

recommended cg is way to nose heavy! move rx and battery both back so no need of extension, mount right beside each other, switch back to, just so wires will reach then see how it is.....but im telling you. recommended cg you will change it after a day.

tonite i will check where mine balances and pm you, or post

ok. the manual says 7 7/16" back from leading edge of wing measured at fuselage. mine is at about 9 1/4" and flies perfect. if you are balancing anywhere in between that range you will have absolutely no problem. mine still flies easy and docile when on low rates, (which barely ever get used) and is a blast on high rates.

My setup is

Rudder- 7 1/2" measured at back and bottom of rudder
Elevator- 3"
Ailerons- 3"

the book says more aileron but all you get from more is a faster roll....and how it is its all ready faster than you can correct because you can't see where it is to correct it. and in a hover it will still roll with or opposite tourque with no problem or hesitation at all.....elevator is slightly less than the manual but it was way more than the manual said untill i made it more tail heavy and as you move cg back elevator has more effect, so that 3" has more effect than the 3 3/4 did before.

where is your rx battery mounted?
Mine is mounted with a ply mount just behind where the rudder servo is suppose to be

Does anyone know, if i use the recommended cg, will i have to do much trimming on the elevators? As i cant trim both servos together[&:]

will it be ok with the 80g's of lead on the tail?

I'd recommend against using any system where they don't both trim together. You can get a cheap servo reverser for under $20 from Tower Hobbies that will keep that from being an issue. Or, if you use the Futaba 9C or higher, it can be programmed in. One of the reasons I got rid of my 7C was that it would not link the trim, (Why not, Futaba?!!?).

If you move that battery back to the tail, you shouldn't need all that weight. But, if you do, it's fine to have it back there as long as the plane is balanced correctly before you fly it. I can't imagine needing both, and I have a heavier gas engine in the nose. I didn't add any weight at all, just moved the battery back until it balanced correctly.

-Pat

but using those servo reversers, you cant trim the end points of each servo, and even if the linkages are the same the servo might not move equally.

What did you use to hold the battery at the back?