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HomeAircraftHelicopterGasser Model RC HelicoptersEngines › Out of ideas
03-30-2018 03:32 PM  81 days agoPost 21
balsabasher

rrVeteran

Central Ohio, USA

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If I am seeing your pictures right, there are two filters in your fuel supply line. This gives you four plus possible air leak points. I would install a felt clunk in the tank, remove the existing filters, and eliminate as many connection points as possible in your fuel supply line between the tank and carb. And what type of fitting am I seeing on the free end of your vent line?

Blades; what goes around, comes around!

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03-30-2018 03:36 PM  81 days agoPost 22
Pistol Pete

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Seffner, FL

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I assumed that plugged fuel line may be for refueling and not the vented one.

I would just eliminate the fuel filter and that other clear looking gadget also in same line to which I'm guessing it's probably a one way valve or what?

Your fuel jug should have a filter instead.

~~Enjoying the hobby one flight at a time~~

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03-30-2018 03:41 PM  81 days agoPost 23
balsabasher

rrVeteran

Central Ohio, USA

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Pete, you are right. I see now, the clear appears to be a filter tee and that is a fill line.

Blades; what goes around, comes around!

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03-30-2018 03:47 PM  81 days agoPost 24
Pistol Pete

rrProfessor

Seffner, FL

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Broke out tablet and zoomed photo...indeed that other "clear gadget" is a Tee fitting and used for refueling.

Im sure once carburator model is posted, he will get a better needle setting suggestion.

~~Enjoying the hobby one flight at a time~~

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03-31-2018 01:52 AM  80 days agoPost 25
Gazza

rrApprentice

Australia

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This pic shows numbers on carburetor...

Melbourne Victoria

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03-31-2018 02:48 AM  80 days agoPost 26
Gazza

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Australia

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I redone all the fuel lines again, they are straight without kinks or holes, put the filler tee on the return line, readjusted needles to 1-1/8 on low and 1-1/4 on high removed filter....got into a hover OK but went to climb out slow , motor bogged and died , removed air filter tried again but made no difference at all, am running the rear Zimmerman muffler as seen in pics....

Melbourne Victoria

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03-31-2018 03:25 AM  80 days agoPost 27
rbort

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Franklin, MA - USA

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Too lean for the 643 carb. Re-open needles to 1 1/4 on low and 1 5/8 on the high. Should work properly then.

P.S. You don't need any filling T's. I removed the return line from the carb to fill the tank, remove the feed line from the carb to drain the tank. Keep it simple no T's or filling plugs to deal with.

-=>Raja.

MA 1005 Hanson 280, 4210 flts
Spectra 27 3DMax, 3280 flts
Whiplash V1-2 Hanson 300, 1555 flts
Whiplash V2 Hanson 300, 393 flts

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03-31-2018 01:37 PM  80 days agoPost 28
ICUR1-2

rrElite Veteran

Ottawa, Ontario

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Could it be the ignition?
Sounds like any sort of load above hovering causes it to quit.
Are you using the same spark plug on both engines?
Same for the coil unit

spending time, paying attention

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03-31-2018 05:27 PM  80 days agoPost 29
JuanRodriguez

rrProfessor

The Villages, Florida

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ICUR1-2
Could it be the ignition?
Sounds like any sort of load above hovering causes it to quit.
Are you using the same spark plug on both engines?
Same for the coil unit
Each motor should have its own coil..... I’ve not seen a coil that responds to load . In my experience, they either work or they don’t....

The whole thing seems like a fuel delivery problem to me ....

Been there, done that and old enough to know better.....

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04-01-2018 01:26 AM  79 days agoPost 30
rbort

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Franklin, MA - USA

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+1
Ignitions either work or they don't. Sometimes however you can have a "leak" that jumps to ground instead of to the spark plug and causes the engine to cut out.

-=>Raja.

MA 1005 Hanson 280, 4210 flts
Spectra 27 3DMax, 3280 flts
Whiplash V1-2 Hanson 300, 1555 flts
Whiplash V2 Hanson 300, 393 flts

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04-11-2018 08:41 AM  69 days agoPost 31
Calil

rrApprentice

Brazil

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Get a new one. Stop the suffering. You dont deserve it

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04-13-2018 09:38 AM  67 days agoPost 32
Gazza

rrApprentice

Australia

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Got around to retuning the 643 carb mixed up another batch of fuel at 32-1 instead of 40-1 now the engine is sounding much better, still not 100% but seems Ok , thanks to all replies very much appreciated ...

Cheers

Happy flying....

Melbourne Victoria

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04-27-2018 03:18 PM  53 days agoPost 33
Richardmid1

rrProfessor

Leeds, England

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Yes it does sound like lean running/over heating issues. The extra oil and opening the needles should keep the temps down.

60% of the time, it works every time!

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HomeAircraftHelicopterGasser Model RC HelicoptersEngines › Out of ideas
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