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HomeAircraftHelicopterHelicopter Main Discussion › Fuel filter
01-31-2013 10:26 PM  5 years agoPost 1
rcheliguymtl

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Montreal, Quebec - Canada

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Most fuel filters have an input and an output however the one recommended for my heli in my manual (VIBE 50) has 3 holes:

http://www.greathobbies.com/product...od_id=JRP960298

I'm confused what the 3rd one would be for?

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01-31-2013 10:29 PM  5 years agoPost 2
altima1779

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Toledo, oh u.s

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The third is normally used as a filler line. Add a piece of fuel tubing to allow for fueling.

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01-31-2013 10:30 PM  5 years agoPost 3
PJRono

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Minnesota, Ya!

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Filler line! Put a short piece of line on it with a cap. Then you can zip tie or O-ring up all the connections and not take them apart.

If you skip me I can't play!

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01-31-2013 10:33 PM  5 years agoPost 4
Four Stroker

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Atlanta

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Be sure to clamp off the line going to the carb before filling ! See above picture.

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02-01-2013 12:55 AM  5 years agoPost 5
rcheliguymtl

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Montreal, Quebec - Canada

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I just looked inside the box of my YS56 SR engine and there is a regular fuel filter it seems however the sheet of paper that came with the engine says "not included" ?

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02-01-2013 01:01 AM  5 years agoPost 6
PJRono

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Minnesota, Ya!

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That's not a filter it's a one-way check valve.

If you skip me I can't play!

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02-01-2013 01:17 AM  5 years agoPost 7
PJRono

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Minnesota, Ya!

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The YS uses crankcase pressure to pressurize the fuel tank which in turn pushes the fuel to the regulator and carburator. The check valve keeps the pressure in the tank instead of going back into the crankcase.

If you skip me I can't play!

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02-01-2013 09:31 AM  5 years agoPost 8
McKrackin

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Lucasville,Ohio

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Make sure you put that check valve in the right direction.
Blow through it to verify direction.

Pressure should be allowed to pass from the engine TO the fuel tank.

I literally never use the word literally right.

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02-01-2013 12:00 PM  5 years agoPost 9
Nycatt

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New York

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Also make sure the tubing from the crankcase to the one way valve is the correct length. I believe the manual says 3 7/8" I've cut mine at 4" without any issues.




Team Synergy
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02-01-2013 04:50 PM  5 years agoPost 10
RICHW

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Cupertino, CA

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I'm wondering. Which side of the filter element should the filler line be on? Carb or tank?

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02-01-2013 04:51 PM  5 years agoPost 11
PJRono

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Minnesota, Ya!

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Tank, so you don't get anything past the filter into the carb.

If you skip me I can't play!

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02-01-2013 04:53 PM  5 years agoPost 12
McKrackin

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Lucasville,Ohio

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Personally,my filter is on my jug.

I filter the fuel going into the jug with a screen.
There is a filter on the clunk in the jug.
There is a filter in the filler line from the jug.

No filter on the heli.

If any of the three filters fail or plug up...the heli keeps running.

I literally never use the word literally right.

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02-01-2013 04:54 PM  5 years agoPost 13
sharam

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Northern California - Fly at Morgan Hill Field

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Not sure if your lungs can create enough pressure to blow through a YS one-way check valve.

The engine manual shows a little arrow on the check valve - ensure that the arrow goes in the correct direction.

Verba volant, scripta manet

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02-01-2013 04:58 PM  5 years agoPost 14
McKrackin

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Lucasville,Ohio

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Not sure if your lungs can create enough pressure to blow through a YS one-way check valve.
I can and I'm a smoker.lol...

I literally never use the word literally right.

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02-01-2013 05:03 PM  5 years agoPost 15
McKrackin

rrProfessor

Lucasville,Ohio

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You can see where the check valve comes apart.
There's an O ring closer to one end.
That end goes toward the fuel tank.

I literally never use the word literally right.

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02-01-2013 05:20 PM  5 years agoPost 16
sharam

rrElite Veteran

Northern California - Fly at Morgan Hill Field

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LOL, I still can't get enough lung pressure to blow through a YS 91 check valve.

Verba volant, scripta manet

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02-01-2013 05:25 PM  5 years agoPost 17
McKrackin

rrProfessor

Lucasville,Ohio

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The biggest thing I learned on my first crankcase pressure engine...

Remove the fuel pressure line when filling the tank.
If you don't,the check valve will do its job and inflate the tank like a balloon until the fuel line blows off and sprays you in the face

You know when you fill your engine with muffler pressure after a flight...you see the smoke and exhaust gases come out the muffler?

Well,with crankcase pressure,the pressure has nowhere to go.
My electric pump doesn't have enough pressure so it would get to a half tank and stop filling.

I literally never use the word literally right.

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02-01-2013 07:17 PM  5 years agoPost 18
BobOD

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New York- USA

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Blow through it to verify direction.
That hurts my ears.

Team POP Secret

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02-01-2013 07:30 PM  5 years agoPost 19
jgunpilot

rrKey Veteran

Pollock, LA

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The YS one way valve has a little arrow mark on the side toward the engine. Forget about blowing through it.

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02-01-2013 09:16 PM  5 years agoPost 20
McKrackin

rrProfessor

Lucasville,Ohio

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Forget about blowing through it.
Why?
That is the only absolute way to ensure it works and is going the right direction.

I literally never use the word literally right.

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HomeAircraftHelicopterHelicopter Main Discussion › Fuel filter
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