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HelicopterAlignT-REX 700N › Trex700N and YS91 SR Needle Settings
03-18-2009 10:05 PM  8 years agoPost 21
Rockohaulic

rrElite Veteran

Canyon Country, CA,​USA, 3rd Rock from​the Sun

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Ken,

Actually, the SR is a bit confusing:

Mid Needle: 34 clicks = 1 turn.
Hi needle: 24 clicks = 1 turn.

So for the mid needle, 17 clicks = 1/2 turn
and 8.5 clicks = 1/4 turn

For the high needle, 12 clicks = 1/2 turn
and 6 clicks = 1/4 turn

Saturday morning I flew my helicopter in my pajamas
How it got in my pajamas I'll never know

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03-19-2009 12:32 AM  8 years agoPost 22
ckd

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Saugus CA

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What he said!

Yep, I'm running an Align 91H (OS) in my Synergy, and this thread is for the YS91 SR.

You understood perfectly!
I hear the Synergy crowd forming the lynch mob now. I know its the same engine but the purist would skin you for that one

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03-19-2009 12:35 AM  8 years agoPost 23
Ken Filloon

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Highland, Michigan

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Its worse than I thought it was

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03-19-2009 09:59 PM  8 years agoPost 24
Rockohaulic

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Canyon Country, CA,​USA, 3rd Rock from​the Sun

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The running average is now:

Avg Mid: 1.5 turns.

Avg Hi: 1 turn + 2 clicks.

I must add at this time, there seems to be a certain consistency between everybody's settings for the YS91 SR!

There is certainly more consistancy with this engine than with the OS/Align 91. I have collected a bit of data through PMs on that engine, and the results are not nearly as consistant.

Interesting.

Maybe we should do this same thread online for the OS/Align 91 engine and see what we get with more data...

Saturday morning I flew my helicopter in my pajamas
How it got in my pajamas I'll never know

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03-19-2009 10:11 PM  8 years agoPost 25
flustercluck

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Newnan Ga (Just S.​of ATL)

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Wow nice thread

Now if somebody can just give me the needle settings for a 91ST on CP15%

I'm slogging thru the tuning using ears iso temps; and having initial settings would save a ton of gas

Mucho gracias

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03-22-2009 11:54 PM  8 years agoPost 26
Rockohaulic

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Canyon Country, CA,​USA, 3rd Rock from​the Sun

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Anyone else???

Saturday morning I flew my helicopter in my pajamas
How it got in my pajamas I'll never know

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03-23-2009 12:09 AM  8 years agoPost 27
baddynergy

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sierra madre, ca-​usa

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I would give you my settings but you know from the past that once my needles are set I DONT touch them to count turns and clicks. Heck, I dont even know where they are, they just work..

**Unattended children will be givin a shot of espresso and a puppy**

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03-23-2009 12:22 AM  8 years agoPost 28
Rockohaulic

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Canyon Country, CA,​USA, 3rd Rock from​the Sun

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I guess you're just not a giver!!!

Ghostrider had those cool little QUK levers on his needles. I never thought much about those until we played with his needle settings at ehe Vegas Fun Fly. They made life mucho easiero!

Saturday morning I flew my helicopter in my pajamas
How it got in my pajamas I'll never know

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03-23-2009 01:25 AM  8 years agoPost 29
flustercluck

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Newnan Ga (Just S.​of ATL)

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Yeah I got some QUK colored levers on order from Ron's. Like that's gonna help, tho... now I won't know what I'm doing in red & blue

Still hoping for some initial settings I can go by....

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03-23-2009 01:27 AM  8 years agoPost 30
flustercluck

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Newnan Ga (Just S.​of ATL)

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Hey Rocko just to confirm

the setting you gave

Avg Mid: 1.5 turns.
Avg Hi: 1 turn + 2 clicks

these are for the SR, not my ST, right??

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03-23-2009 01:41 AM  8 years agoPost 31
Rockohaulic

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Canyon Country, CA,​USA, 3rd Rock from​the Sun

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Yep - the YS91 SR. The new long stroke version.

Saturday morning I flew my helicopter in my pajamas
How it got in my pajamas I'll never know

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03-23-2009 01:59 AM  8 years agoPost 32
flustercluck

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Newnan Ga (Just S.​of ATL)

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Not compatible then on my ST running CP15, yes?

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03-23-2009 02:06 AM  8 years agoPost 33
Rockohaulic

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Canyon Country, CA,​USA, 3rd Rock from​the Sun

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I have no idea...........

Saturday morning I flew my helicopter in my pajamas
How it got in my pajamas I'll never know

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03-23-2009 02:19 AM  8 years agoPost 34
flustercluck

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Newnan Ga (Just S.​of ATL)

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Disregard; dumb question. Dumbazz bug bit me tonite.

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03-23-2009 09:21 PM  8 years agoPost 35
dtrexel

rrNovice

Canyon Country, Ca.​USA

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Low needle???

What should the low needle be set at?

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03-23-2009 09:22 PM  8 years agoPost 36
Rockohaulic

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Canyon Country, CA,​USA, 3rd Rock from​the Sun

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Didn't I just get off the phone with you? You're fast!

Everyone is at about 1 turn on the low...

Saturday morning I flew my helicopter in my pajamas
How it got in my pajamas I'll never know

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03-23-2009 09:27 PM  8 years agoPost 37
flustercluck

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Newnan Ga (Just S.​of ATL)

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Now fellas I'm from Georgia and can be a bit slow

On this LSN reply are we talking about the 91ST that I originally asked about, or another engine

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03-23-2009 09:56 PM  8 years agoPost 38
Rockohaulic

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Canyon Country, CA,​USA, 3rd Rock from​the Sun

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Still the YS91 SR!

Saturday morning I flew my helicopter in my pajamas
How it got in my pajamas I'll never know

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03-23-2009 10:03 PM  8 years agoPost 39
Ghostrider

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San Diego, CA

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Hey guys,

Not to burst anybodies bubble but you guys better think twice about running out and tweaking your needles based on the information provided. This is way to vague to be productive without taking into account the following very important factors.

I just got back from the Las Vegas FF and the elevation is about 2400+ feet. I fly at sea level at home. I had to lean my top end by 7-10 clicks depending on the ambient temperature changes throughout the day.

If you guys are going to continue with this, I would suggest that everybody post the following information along with their needle settings.

What Fuel?
What altitude?
What's the ambient temperature?
What pipe / header?
Which YS? SR or ST

Sorry Rock, the information so far is fine and dandy but for real life engine tuning, this is not much more than simply interesting.

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03-23-2009 10:51 PM  8 years agoPost 40
Rockohaulic

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Canyon Country, CA,​USA, 3rd Rock from​the Sun

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I totally agree with you Ghost. Providing info like altitude and temp, etc, etc. is great.

Just trying to post some real world settings to help people out. As we know from the "other" engine, the settings called out in the owners manual are very very conservative! Practically worthless if you ask me.
I just got back from the Las Vegas FF and the elevation is about 2400+ feet. I fly at sea level at home. I had to lean my top end by 7-10 clicks depending on the ambient temperature changes throughout the day.
Makes perfect sense: Higher altitude = less O2 = requires leaner setting.

What really confuses a lot of pilots is temp. As we get into summer, you would also lean the engine out. This confuses some pilots.

But the logic still applies: Higher temp = less O2 = requires leaner setting.

Saturday morning I flew my helicopter in my pajamas
How it got in my pajamas I'll never know

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HelicopterAlignT-REX 700N › Trex700N and YS91 SR Needle Settings
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