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HelicopterEngines Plugs Mufflers Fuel › YS engines header tank or not
04-25-2002 02:43 AM  15 years agoPost 1
03fomoco

rrApprentice

Tucson AZ

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I have seen a few machines lately with header tanks on YS pumped engines and was curious what the majority was doing.

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04-25-2002 03:18 AM  15 years agoPost 2
CHiatt

rrApprentice

Winter Garden, FL

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The use of header tanks on a YS depends on the need for either a bubble trap for a aft facing clunk line type main tank (like an XLPro2KWC) or more fuel capacity (like the motor I had in my Pro last year). As the main tank gets low, long vertical diving manuvers will allow the clunk to suck air. The header tank prevents air from getting to the motor until real late in the flight. A YS regulator system will usually ignore an air bubble in the line, but in a contest situation you can't be too careful.

I used header tanks in the XLPro2KWC that I flew last year. The motor I had was a real animal but was a gas hog, and the "B" Schedule is a long one.

I see no benefit in using one in a machine that has the clunk line oriented sideways, unless you need more fuel.

Cliff

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04-25-2002 04:20 AM  15 years agoPost 3
a_korandr

rrVeteran

Chicago, IL

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Cliff,
sorry if the question is not from this thread. What is the RUD servo horn lenght you use on your ProIIs.

I have GY501 and GY601.

Thanks a bunch.

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04-25-2002 06:16 AM  15 years agoPost 4
Optech

rrKey Veteran

San Diego, CA.

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I use one on my Fury and .46 Graphite because the main tanks are up under the canopy and is sometimes hard to see in flight. With the header tank out in the open, I can do a slow flyby and see if its full or not.

On the POS Falcon, its a necessity because of fuel foaming issues in the main tank. On the PHI for more run time.

It saved my Fury once already....... I was just having too much fun. With the YS in the Fury, the engine demeanor doesn't change from warm up to finish. With the other engines, they definitely get a little leaner as the fuel burns out of the main tank so you get a hint of where you are in your fuel burn. Not the case with the YS and it almost got me.

Mike

Viva La Airtronics!

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04-25-2002 06:23 AM  15 years agoPost 5
Optech

rrKey Veteran

San Diego, CA.

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Cliff,

Welcome to Runryder. Its good to see someone here with your experience that we can "mind pick".

In case you haven't already figured it out. This forum can get a little rough but try not to take it personally although I think they've already scared off Curtis.

Mike

Viva La Airtronics!

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04-25-2002 08:12 PM  15 years agoPost 6
CHiatt

rrApprentice

Winter Garden, FL

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Andrey,
I am using a servo horn that is 13.5mm long on all my machines with the GY-601. This is with 4.67:1 gear ratio, 105mm tail blades and the Pro tail rotor control mechanism. On the tail pitch slider, I add two or three of the old style clutch / clutch bell washers (the really thin ones) on the brass slider between the bearing and the pitch "plate".

Cliff

I sent you this via e-mail too.

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04-25-2002 08:31 PM  15 years agoPost 7
Augusto

rrElite Veteran

US

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Cliff,

Welcome to RunRyder.
I'm delighted to have a world-class caliber pilot posting advice here.
I look forward to reading your posts.

Best regards,

Augusto

Avant Aurora Ultimate

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04-26-2002 02:50 AM  15 years agoPost 8
Dyehard

rrVeteran

Cedar Bluff, Va.

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Cliff, good to see you here. While you are giving out information, maybe you could give the secret formula to the wide band dirt repellent you spray on your helis. I need about two gallons.

Allen Dye

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04-26-2002 06:02 PM  15 years agoPost 9
sluggo

rrElite Veteran

Kitchener Ont

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"maybe you could give the secret formula to the wide band dirt repellent you spray on your helis. I need about two gallons. "

HAHAHA!!

Welcome Cliff looking forward to reading more post from you!

Chris

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04-28-2002 04:06 AM  15 years agoPost 10
JoeS

rrNovice

USA

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TO SEE WHO WILL FOLLOW

There is no reason to run one unless you want to see if have any fuel left!

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05-02-2002 04:19 AM  15 years agoPost 11
03fomoco

rrApprentice

Tucson AZ

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Pulling fuel line off.

After flying the other day I pulld the supply line off the engine I could not believe that it still idled for another 20 to 30 seconds. The YS holds more fuel than I thought in the diaphram and lines. Just food for thought.

-Dave

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05-05-2002 07:03 PM  15 years agoPost 12
ed vega

rrKey Veteran

nyc, queens

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always used one , enough pressure +4>8+ psi to use one .. extra flight time .. use thicker fuel lines

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05-06-2002 07:55 AM  15 years agoPost 13
03fomoco

rrApprentice

Tucson AZ

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I see some of the points

I have tried to get my freya to quit lower to the ground I have no header tank and I'll be damned if it won't get the last drop of fuel first

Sadly Sponsored by: VISA, MASTERCARD, and Bank of America

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HelicopterEngines Plugs Mufflers Fuel › YS engines header tank or not
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