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04-01-2005 12:19 PM  13 years agoPost 1
3DPILOT

rrNovice

Israel

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My beraly new C-spec ps 91 on my Freya is starting to go lean by the end of the tank, something like 1\4 before the end.
any ideas?
thx very much

Freya 90, MP2, Futaba, Magnum fuel!

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04-01-2005 01:15 PM  13 years agoPost 2
Jafa

rrElite Veteran

Sydney, Australia

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Could be a pin hole in the clunk line that gets exposed at 1/4 tank


Protos | Logo 400 & 500 | Sceadu Evo | Freya Evo | Trex600N | Avant FX

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04-01-2005 01:27 PM  13 years agoPost 3
3DPILOT

rrNovice

Israel

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all the fuel tubes have been replaced... so i dont think its some thing like this...
thx

Freya 90, MP2, Futaba, Magnum fuel!

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04-01-2005 07:13 PM  13 years agoPost 4
ripper

rrApprentice

Maryland

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How can you tell its going lean? Head speed, eng temp? How many flight are on this eng? What combinations and gear ratio are you running?Do you have a header tank , if so where is its location? Could be a variety of things causing this problem. Any more info would help.

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04-01-2005 08:07 PM  13 years agoPost 5
3DPILOT

rrNovice

Israel

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well the head speed is going up very much, no smoke, and the eng' sound is like his working on air...
the eng' past something like 10-20 flight, not more.
to be honnest i dont really know what is my gear ratio
the header tank is located in direct line with the carb'...
thx

Freya 90, MP2, Futaba, Magnum fuel!

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04-01-2005 09:04 PM  13 years agoPost 6
AJT

rrVeteran

KINGSTON, NY

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Same thing happened to my buddy's (twice) First time we found a pin hole in his clunk line. 2nd time he found his HEAD BOLTS were loose. Hope this helps.
AL.

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04-01-2005 09:35 PM  13 years agoPost 7
I3DM

rrProfessor

Israel

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youre using a 7.92 gear ratio.
is that 1\4 of the main tank or header tank ?

www.liorzahavi.com

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04-02-2005 06:46 AM  13 years agoPost 8
3DPILOT

rrNovice

Israel

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the header tank is full, its the main tank in 1\4...

ohh and AJT you saying to chack the eng' head bolts?
thx very much

Freya 90, MP2, Futaba, Magnum fuel!

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