foosball_movie

Hi. I'm about to maiden a Sig Wonder with an OS .25 FX motor. I'm hoping for a fast plane, but I'm "wondering" how fast I can get this thing to go.

Anyone know how fast these can go?

evan-RCU

You'll be happy with that combo, what prop are you going to use?

Crazy4Flight

My Feedback: (540)

Just make sure you have the CG correct or you will be chasing it all over the Sky!

My last Wonder had a 9x7 APC...Very Quick and Agile.

Also it had dual rudders 1/2" behind aft limit. WOW what a handfull and incredible snaps!

Not RIP but sold it to build a Twin again.

foosball_movie

I'm using an 8x6 prop (forgot the brand's name). I tried to get an APC 8x6 on it, but I'm using a TruTrun spinner and the APC prop is too thick for the spinner (can't get the spinner to touch the back plate). I may try to grind away some of the spinner to make the APC fit, but thought I'd try this other prop first.

Speedie500

Hi Bob,
Where did you put the rudder servo this time?

vertical grimmace

My Feedback: (1)

If you need to go faster get a mouse can combat muffler here http://www.airscharnell.com/
I am running an 8-6 APC with this combo and the engine turns over 18,000. I think you will be happy with your combo. Very user friendly.

Speedie500

Hi guys, I'm busy with the covering at the moment, will post pic's when it's complete.
I've got a Super Tigre .25 up front driving a 9.5X6 Bolly prop. I'm using mini servos on the control surfaces and a standard servo on the throttle.

vertical grimmace

My Feedback: (1)

Speedie, you might want to try a little less diameter. For that size prop you would want less pitch. If you want speed, go down to a 8" prop.

Mike Connor

My Feedback: (5)

Sounds like a lot of prop for a .25

The Toolman

I bought one used an have no papers with it. Wondering if you or someone could tell me where the CG is supposed to be on this little hot rod. It does fly good with a .15 magnum, but I do hafta chase it all over the sky as you said.


Ronnie

Crazy4Flight

My Feedback: (540)

I put the CG on the main spare balanced on my fingertips

my print shows it 1/4" in front of where the wing sheeting stops.

main spares are 1/4 x 1/8 hardwood

The Toolman

Thank Ya Sir, mines about 1/2 inch in front of the spar. Thats probably why its a handful to control.



Ronnie-The Toolman

vertical grimmace

My Feedback: (1)

The airfoil on that design is a NACA0015. It should balance at the 30% mark which is also the thickest part of the airfoil. Generally where the spar is.

Speedie500

8" diameter? I already have that issue covered. Apart from the 9.5X6, I have a 9.5X5 & 8X6. By moving the radio gear around I have got the Wonder to balance @ 2 3/8" from the LE. I shortened the nos by a 1/2". Mod's that I got from another thread. Hopefully it works for me as well as it did for others. [8D]

Speedie500

Another pic'. Only 1 loaded.[:@]

brown2x2

My Feedback: (35)

Hi.
Like to know if you like the rudder on your Wonder ????
Mine is going for the maiden today.
Bob

Speedie500

Hoping to Maiden it in the morning. [8D]

Speedie500

Still no maiden [&o]. The weather has been rubbish for the last 3 days, but holding thumbs for tomorrow.
Brown 2X2 how did your maiden go?

Speedie500

10 flight's later we have a big smile factor. Air has been bumpy and the Super Tigre needed some tuning, but with lots of exponential and some down elevator trim it flies well.
Not as fast as I expected but plenty fast enough for me. Found that the 8X6 prop works best, the others are just too much prop for that old engine.
As for the rudders Bob, as far as I'm concerned for the extra weight they are not worth it, but that is just my opinion. Get the CG right and it's a BLAST.

Crazy4Flight

My Feedback: (540)

Rudders not as effective for some, a buddy had a winder OS.32SX dual rudders and full rudder deflection only kicked the tail out,,, too closely coupled perhaps.

Mine helped on cross wind landings and were usefull up to 1/2 power

Speedie500

Perhaps more deflection or bigger rudders would be more effective. Maybe I'll try more deflection.
Will let you know how it goes.

brown2x2

My Feedback: (35)

Mine went very well. I have a Magnum 28 and its fast enough. I did use allot of expo. And on dead stick dual rates for the elevator throw.

brown2x2

My Feedback: (35)

I'm looking for a DF- Starfire ll. Let me know if you see one forsale.

brown2x2

My Feedback: (35)

Yo Speedie, How do you work on the dinning room table with out the wife knowing ????????????

FlyingGreg

My Feedback: (4)

Here is my current Wonder. This is number 2. I have an OS LA.15 on this one with an 8x3 MA combat prop. Mini servos, receiver and battery, low weight all equal good spirited performance. The Wonder is not really designed as a "speed plane" but more of sport plane. You need something with a much thinner airfoil if you want to hit tripple digit speeds--IMHO. The Wonder is great for zipping around at low altitude doing upright and inverted eights about 3 feet off the deck. My previous Wonder had full size gear and an OS .25. Flew about the same.