Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

Faster Sig Wonder speed?

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Old 08-03-2007, 02:13 PM
  #1  
foosball_movie
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Default Faster Sig Wonder speed?

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?
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Old 08-03-2007, 03:02 PM
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evan-RCU
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Default RE: Faster Sig Wonder speed?

You'll be happy with that combo, what prop are you going to use?
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Old 08-03-2007, 03:21 PM
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Default RE: Faster Sig Wonder speed?

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.
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Old 08-03-2007, 03:21 PM
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Default RE: Faster Sig Wonder speed?

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.

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Old 10-20-2007, 03:20 PM
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Default RE: Faster Sig Wonder speed?

Hi Bob,
Where did you put the rudder servo this time?
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Old 10-20-2007, 05:49 PM
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Default RE: Faster Sig Wonder speed?

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.
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Old 10-20-2007, 07:36 PM
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Speedie500
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Default RE: Faster Sig Wonder speed?

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.
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Old 10-20-2007, 07:44 PM
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Default RE: Faster Sig Wonder speed?

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.
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Old 10-20-2007, 07:47 PM
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Mike Connor
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Default RE: Faster Sig Wonder speed?


ORIGINAL: Speedie500

I've got a Super Tigre .25 up front driving a 9.5X6 Bolly prop.
Sounds like a lot of prop for a .25
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Old 10-22-2007, 08:26 AM
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Default RE: Faster Sig Wonder speed?


ORIGINAL: Crazy4Flight

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.

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
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Old 10-22-2007, 02:43 PM
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Default RE: Faster Sig Wonder speed?


ORIGINAL: The Toolman


ORIGINAL: Crazy4Flight

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.

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
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
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Old 10-22-2007, 03:21 PM
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Default RE: Faster Sig Wonder speed?

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



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Old 10-22-2007, 04:53 PM
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Default RE: Faster Sig Wonder speed?

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.
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Old 10-26-2007, 08:35 PM
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Default RE: Faster Sig Wonder speed?

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]
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Old 10-26-2007, 08:55 PM
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Default RE: Faster Sig Wonder speed?

Another pic'. Only 1 loaded.[:@]
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Old 10-28-2007, 11:45 AM
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Default RE: Faster Sig Wonder speed?

Hi.
Like to know if you like the rudder on your Wonder ????
Mine is going for the maiden today.
Bob
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Old 10-28-2007, 05:41 PM
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Default RE: Faster Sig Wonder speed?

Hoping to Maiden it in the morning. [8D]
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Old 10-31-2007, 04:07 PM
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Default RE: Faster Sig Wonder speed?

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?
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Old 11-04-2007, 08:36 AM
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Default RE: Faster Sig Wonder speed?

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.
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Old 11-04-2007, 08:42 AM
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Default RE: Faster Sig Wonder speed?

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
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Old 11-04-2007, 08:49 AM
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Default RE: Faster Sig Wonder speed?

Perhaps more deflection or bigger rudders would be more effective. Maybe I'll try more deflection.
Will let you know how it goes.
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Old 11-04-2007, 10:22 AM
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Default RE: Faster Sig Wonder speed?

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.
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Old 11-04-2007, 10:26 AM
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Default RE: Faster Sig Wonder speed?

I'm looking for a DF- Starfire ll. Let me know if you see one forsale.
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Old 11-04-2007, 10:28 AM
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Default RE: Faster Sig Wonder speed?

Yo Speedie, How do you work on the dinning room table with out the wife knowing ????????????
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Old 11-06-2007, 03:00 PM
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Default RE: Faster Sig Wonder speed?

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.
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