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 Engine?

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Old 04-15-2008, 06:16 PM
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HONOR50
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Default Sundowner 50 Engine?

Hi I am new to the forum but I have just purchased a sundowner 50 and I am having a hard time deciding between the New OS 81 FS-A and the Saito 91..... I am looking for speed but don’t want to compromise my landings by putting to big of an engine in the plane.

If anyone knows what engine would work best for me please post and help me out... also does anyone know if there is a review on the new OS engine 81 thx in advance
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Old 04-15-2008, 09:51 PM
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Default RE: Sundowner 50 Engine?

Also if the Saito 115 or 125 would be better choices... please someone help me lol
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Old 04-15-2008, 10:02 PM
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Yellowsierra02
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Default RE: Sundowner 50 Engine?

I would put a YS 1.10 in it! http://centralhobbies.com/Engines/ys/YSFZ110.html There superchargered 4-strokes. This should make the sundowner go 120+.
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Old 04-16-2008, 12:46 PM
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darren94
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Default RE: Sundowner 50 Engine?

Jett 60LX. Light, reliable, 135+mph. custom made to order. $350.00
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Old 04-17-2008, 06:59 PM
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Default RE: Sundowner 50 Engine?

I have never used ys ..... compared to os and saito is the quality the same or better>
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Old 04-17-2008, 08:42 PM
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Default RE: Sundowner 50 Engine?

i have never used ys engines but members in my club do use them and after they are dialed in they love them but they say they are tempermental. but some people say that about other engines to, i seriously considered buying a ys but the real downfall for me was that they only have a one year warrenty and saito has a 3 yr, that sold me and price was cheaper. i have 3 saitos and love them all.
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Old 04-17-2008, 11:15 PM
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Default RE: Sundowner 50 Engine?

I'd go with the Jett 60 LX because it’s lighter than most 46 class engines and from what I’ve read, you want this plane light for landing and handling. If you don’t care about weight go with the YS 110-S for the ultimate in power, but you better be a good pilot at low speed. Best to land HOT and watch out for high speed snaps/tip stalls because of the higher wing loading.

I HAD two Saito 82's and they were ok with low pitch 3D props but I never could get them to reliably idle low enough to land higher pitch prop on a speed plane with the engine running.
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Old 04-18-2008, 11:22 AM
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Default RE: Sundowner 50 Engine?

ok thanks for the info guys..... after reading i think i want to go with saito

how much speed would i be loosing if i was to go with the saito 115 or 91 compared to the YS 110

Is the top speed of the os 81 = to the saito 91
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Old 04-18-2008, 06:04 PM
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Default RE: Sundowner 50 Engine?


ORIGINAL: HONOR50

ok thanks for the info guys..... after reading i think i want to go with saito

how much speed would i be loosing if i was to go with the saito 115 or 91 compared to the YS 110
My best guess, at least 25MPH.
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Old 04-19-2008, 03:39 AM
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Default RE: Sundowner 50 Engine?

agree with freakingfast you lost lot of speed. This plane would fly slow with practice I have a big OS 91fx on mine
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Old 04-19-2008, 08:13 PM
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Default RE: Sundowner 50 Engine?

patzane is it hard going slow with this plane... im going with the saito 25mph to me is not a big deal 2 me.... thanks for all the info will post pics as soon as the saito comes in
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Old 04-19-2008, 09:18 PM
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Default RE: Sundowner 50 Engine?

im going with the saito 25mph to me is not a big deal 2 me
Bl*****mer.....how dare you speak of such things...

Just kidding of course...
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Old 04-19-2008, 10:02 PM
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Default RE: Sundowner 50 Engine?

Anyone try a Tower .75 in this plane? I've got two of these engines, and am very pleased with their quality/reliability. Just curious how it would fly this Sundowner 50.
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Old 04-19-2008, 10:24 PM
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Default RE: Sundowner 50 Engine?

I just finished mine. I went with a Satio 72 GK If it flies as good as looks I will be impressed.
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Old 04-20-2008, 07:12 AM
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Default RE: Sundowner 50 Engine?

i think patzane had one in his to start with.
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Old 04-20-2008, 10:11 PM
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Default RE: Sundowner 50 Engine?

pkh- When I first built this plane I had a TH 75 before the bearing went out on me. I have a video on youtube of me flying with the 75.

HONOR50 - You can slow this plane down a good bit and still be ok.

ORIGINAL: -pkh-

Anyone try a Tower .75 in this plane? I've got two of these engines, and am very pleased with their quality/reliability. Just curious how it would fly this Sundowner 50.
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Old 04-21-2008, 12:37 PM
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Default RE: Sundowner 50 Engine?


ORIGINAL: patzane

pkh- When I first built this plane I had a TH 75 before the bearing went out on me. I have a video on youtube of me flying with the 75.
I found your YouTube videos, in addition to your Sundowner 50, it looks like you have a Viper 500 and a NitroModels Bobcat too. Which one is your favorite go-fast plane?
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Old 04-21-2008, 11:09 PM
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Default RE: Sundowner 50 Engine?

pkh- I have 2 Viper500. The one in the Video has an OS 55 with 10x10 prop. My other has a Weber 40. with 9x8 prop. Both are a blast to fly but the one with the Weber is much faster. I really don't have a favorite go-fast plane. I love doing 3 feet high low pass with my bobcat and this Sundowner. I love my viper as I can do the same, plus pull very hard G's in the turns.
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Old 04-25-2008, 09:43 PM
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Default RE: Sundowner 50 Engine?

How fast would a Sundowner be with a West 50V1 bolted up front ???
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Old 04-25-2008, 10:55 PM
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Default RE: Sundowner 50 Engine?

A 10x10? WOW that is HUGE for the 55.

The West turns an 8x8 or 9x7 so I think you might want to find a more slippery airframe for that beast...
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Old 04-25-2008, 10:58 PM
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Default RE: Sundowner 50 Engine?

Thanks Razor,
Any suggestions on an airframe (one that looks like an aeroplane), my old Magnum is starting to look just that OLD......
Cheers
Oz
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