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

Sundowner 50 Arf

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Old 12-09-2007, 08:05 AM
  #1
phjoker
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Default Sundowner 50 Arf

What do you think about this [link]http://www.horizonhobby.com/Products/Default.aspx?ProdID=HAN4725[/link]
Due out mid Jan I may have give it a try.and compare it to my Minnow
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Old 12-09-2007, 10:27 AM
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Default RE: Sundowner 50 Arf

Looks nice but for the price I would rather have something in a 60 sized like the little toni or midget mustang.
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Old 12-09-2007, 11:23 AM
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Default RE: Sundowner 50 Arf

Well it does have a 60" span, so maybe you could wedge in a .90?
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Old 12-09-2007, 12:36 PM
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Default RE: Sundowner 50 Arf

phjocker:

This bird with a 40-52 2stroke engine would be a faster than average sport plane with a 60" span, and generally fly like a sport model. In general, that would not be acceptable to the "Brotherhood" who would by nature be forced to stuff something a little quicker, like say a 60 just to perk it up a little bit. Looks like a mod to 90 would take some doing, and be a little heavy. Most of the "Bro's" stuffed 90's into the GP Little tony's and similar sized offerings, but were generally disapointed on the top end. I and a Bro. had Jett 90's in ours, too much frontal area to make them what we call fast. Fast is relative to each of us. Something around 120mph shood get your juces going. The National circut racer types will not get excited until around 200mph in general. Not a unusual speed for the top quickees and foumula type birds. The giant unlimiteds will get up to 230-250 on occasion. A good groving set up quickee is flyable by most at 200, becomes a handfull if not near prfect. The question is likely to be answered differently by almost each of us depending on age, experience and skills. ENJOY
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Old 12-09-2007, 04:51 PM
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Default RE: Sundowner 50 Arf

I was thinking pretty much the same thing...that it would probably be about like that Nemesis (what is it, World Models? )
A good .61 minimum...
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Old 12-10-2007, 09:19 AM
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Default RE: Sundowner 50 Arf

Ok..... looks very nice! Id buy one of these.

And I commend Horizon for showing the 2-c engine installation as a baseline!!! Big hi-5 there!

(most manuals/pictures for other aircraft chicken-out and show a simple 4-c install)

But 6.5 lbs, 600 sq inches... talking 90LX power here

Likely the Toni muffler kit will work nicely. But it would be useful to see the firewall area first.
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Old 12-30-2007, 06:15 PM
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Default RE: Sundowner 50 Arf

Would a YS 1.10 fit like when shoe horn them in the WM Dago Reds.
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Old 01-11-2008, 01:44 AM
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Default RE: Sundowner 50 Arf

the release date for this plane should be soon. I and stuck between this Sundowner and a Midget Mustang. The price is about the same. I looking to put a tower .75. How will this combo match up with the sundowner. I like speed and looking to go 100+++.
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Old 01-11-2008, 06:01 PM
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Default RE: Sundowner 50 Arf

I just put mine on order. Should be in next week according to LHS. Looking to put a YS 63 in it. Could probably easily accommodate a YS110 but it should still be a pretty fun sport plane and have plenty of pep with a 63. Keeping the weight down with a 63 should make it very agile and make landings easy. I'll let everyone know how she flies with that YS 63 when I get her up (hopefully last week in January). I look forward to hearing about other configurations. Please let me know if someone does put a 110 on it.
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Old 01-11-2008, 11:38 PM
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Default RE: Sundowner 50 Arf

I put one on order with HH. Do anyone know when it will be release That YS should make this baby cook
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Old 01-18-2008, 07:50 AM
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Default RE: Sundowner 50 Arf

I just got my Sundowner in yesterday. ALL the controll surfaces came prehinged and control horns installed except for elevators(because sab needed to be instaled first). This plane is 99.999% built out of the box. My friends make fun of me for ARFing and never building. This is more built than even most H9 Kits. This thing is intense though!!! covering looks great and what's left of build came together pretty quickly. I look foward to getting her in the air. She'll maiden with the YS 63 on Sunday and I'll let people know how she does. All I can say is she's light, clean, sturdy with a design that supports minimal drag. The pics don't do her justice.
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Old 01-18-2008, 08:37 AM
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Default RE: Sundowner 50 Arf

Good luck with the maiden. Don't forget the pictures!!!!!!!!!!!!!
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Old 01-18-2008, 07:43 PM
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Default RE: Sundowner 50 Arf

do they have them CA hinges, I hate them
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Old 01-18-2008, 10:04 PM
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Default RE: Sundowner 50 Arf

Anybody know the weight of a ys 63? I was thinking of using a os 75 ax. Weight on the os is 26 ounces with muffler. I am just worried about weight and cutting out half the cowl to get it to fit. OS claims the 75 is almost the same size as a 61.
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Old 01-19-2008, 11:17 AM
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Default RE: Sundowner 50 Arf

I'd go for the .91 FX if I was even considering the .75 AX. If I'm not mistaken I believe the .91 is lighter. And with exception to the muffler, is the exact same size as the .61 FX.
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Old 01-19-2008, 08:30 PM
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Default RE: Sundowner 50 Arf

Picked up the bird today from LHS. Covering is flawless. Can't decide if standard ball bearing servos would be sufficient or if I should get high torque units. Planning on using .55 AX. Cowl is huge, .75 AX would fit easily.
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Old 01-19-2008, 10:11 PM
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Default RE: Sundowner 50 Arf

Thanks I ordered the 75 ax last night. Both should be in by wednesday. I looked up the weight on the 75 versus the 91. The 91 is lighter by 2 ounces and up by .4 hp. Size wise im not so sure. In a ad they compare a 91 to a 120 ax. Stating there is not much difference size wise. I have a 120 ax and it is too big for the front of this plane. There would be no cowl left.
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Old 01-20-2008, 01:13 AM
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Default RE: Sundowner 50 Arf

what would be the best prop for the .75
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Old 01-20-2008, 10:54 AM
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Default RE: Sundowner 50 Arf

When OS compared the 1.20 AX to the .91 FX it was a marketing ploy. They are not even close to the same size except for the bolt holes. The .91 FX is the same block as the .61 FX, which is actually smaller than the .75 AX.

Either way, if the .75 AX runs as well as the .55 AX you will be pleased with the engine I'm sure.
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Old 01-20-2008, 10:57 AM
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Default RE: Sundowner 50 Arf

For comparisons of engine sizes straight from the horse's mouth:

http://osengines.com/engines/dimension-std.html

For some reason they don't have the .75 AX listed on this chart yet.
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Old 01-20-2008, 06:55 PM
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Default RE: Sundowner 50 Arf

So I got her up. The YS 63 was plenty powerful enough! YS 63 weights 19 ounces without muffler (which the YS doesn't need). Engine started right up and sounds incredible. I ran a 13x6 APC on it and it was plenty fast. The plane flew great. You will need to bring it in fairly hot. She'll sink like a brick if you slow it down enough. good news is she seems to not have a problem with tip stalling. The low speed flight characteristics are very manageable.

I would advise not going much over a 20 ounce engine configuration. I still needed to add tail weight with the YS and a much bigger engine will probably make her a little less agile. And yes she is pretty nimble. I found the flight experience very enjoyable with that engine configuration.

Having said all that, the first flight went off without a hitch. The plane flew very smoothly and I fell in love immediately. The second flight didn’t go so well. I lost complete elevator control and lost the plane. I still haven’t figured out what happened, but the first flight was enough to convince me to order another and she will have another YS 63 on it.
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Old 01-20-2008, 11:19 PM
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Default RE: Sundowner 50 Arf

josh very sorry to hear about her going down. That sucks
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Old 01-21-2008, 10:08 PM
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Default RE: Sundowner 50 Arf

Any advice whether standard ball bearing servos would suffice on this bird or do I need to get high torque units?
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Old 01-22-2008, 01:53 AM
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Default RE: Sundowner 50 Arf

Don't worry, my replacement Sundowner will be in tomorrow and she should be ready to fly by the weekend again!! The manual recomends JR DS821 servos which I think put out in the ball park of 75 oz/in of torque. I would keep it close to that to be safe. It all depends on how fast you plan on going and what control throws you expect to use.
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Old 01-22-2008, 09:39 PM
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Default RE: Sundowner 50 Arf

I'm going to use Hitec HS-475HB's and run them at 6V so I get 76 oz/in of torque. Sorry to hear about your crash; have you been able to determine why you lost elevator control? Was the plane totally destroyed?
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