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HomeAircraftHelicopterGasser Model RC HelicoptersEngines › Out of ideas
03-29-2018 09:09 AM  7 months agoPost 1
Gazza

rrApprentice

Australia

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Hi guys, I have a x-Cell 1005 Gasser running a zenoah 23puh could not get it to run properly at all, changed fuel lines,changed plug,put a filter in line , changed carburetor ,took filter out to try again , changed tank , changed ignition coil , no luck at all , the engine will idle , get to hover rpm and engine will hesitate then loose rpm and stop, rang a fellow Gasser pilot and got off him another zenoah 231 puh different carby and fitted that, tried to hover again but same thing happened , can't understand it's a different engine with a different carby , why would 2 different engines run like this... ?

Melbourne Victoria

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03-29-2018 11:10 AM  7 months agoPost 2
Professor Fate

rrKey Veteran

Goose Creek S.C.

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Have you tried fresh fuel? I've seen gas that looked and smell ok in fact be bad.

Welcome my son, Welcome to the machine

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03-29-2018 11:36 AM  7 months agoPost 3
Eury

rrProfessor

Dover NH

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Sounds to me like it has an air leak when it heats up. Maybe the carb isolator is cracked, or some gasket is bad.

Nick Crego

Citizen #0168

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03-29-2018 12:55 PM  7 months agoPost 4
Gazza

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Australia

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Using a fresh batch of fuel, and can't be an air leak on both engines can it.....?
Unless the ratio of 40 to 1 is causing a problem....

Melbourne Victoria

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03-29-2018 12:58 PM  7 months agoPost 5
Eury

rrProfessor

Dover NH

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Oops. Didn’t see that you changed the engine. I read that as you just changed the carb with the one he had. In that case I’d think it’s an issue with the fuel system. Maybe it’s not plumbed correctly, or there is a broken fuel line or something. I wouldn’t have a filter in there if it were me, but it probably wouldn’t cause this.

Nick Crego

Citizen #0168

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03-29-2018 01:09 PM  7 months agoPost 6
JuanRodriguez

rrProfessor

The Villages, Florida

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I agree with Nick that it’s probably an issue with your fuel system.

I would replace all of the fuel lines and make sure the tank is properly vented.......

I would also loose the filter if one is in use or at minimum, replace it with a new one.....

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

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03-29-2018 01:12 PM  7 months agoPost 7
ICUR1-2

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Ottawa, Ontario

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Look for cracks in the tubing, something wrong with lines if both engines do the same

spending time, paying attention

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03-29-2018 02:21 PM  7 months agoPost 8
RM3

rrElite Veteran

Killeen, Texas - USA

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heat has a funny way or altering things... I doubt its an air leak... is there anything you use to control the ignition? like a kill switch? did you swap out the entire ignition system from plug to flywheel?

vapor lock maybe? overheating due to running too lean?

showing a preference will only get you into trouble, 90% of everything is crap...

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03-29-2018 03:14 PM  7 months agoPost 9
Professor Fate

rrKey Veteran

Goose Creek S.C.

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Here's a long shot. Using the same muffler? If so check for obstructions. Here in the states we have what we call mud daubers. They love building nests in round holes,never in a square hole.

Welcome my son, Welcome to the machine

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03-29-2018 03:27 PM  7 months agoPost 10
balsabasher

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Central Ohio, USA

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Can not believe this has not been asked yet. What is the needle settings on your carb? Both high and low needles. What are your throttle and pitch curves set-ups? Are you using a governor? Can you tell if the engine is over heating?
Btw, check for proper fuel tank venting.

Blades; what goes around, comes around!

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03-29-2018 04:03 PM  7 months agoPost 11
rbort

rrProfessor

Franklin, MA - USA

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How about this, what carb model do you have because needle settings vary by carb models.

-=>Raja.

MA 1005 Hanson 280, 4220 flts
Spectra 27 3DMax, 3310 flts
Whiplash V1-2 Hanson 300, 1618 flts
Whiplash V2 Hanson 300, 473 flts

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03-30-2018 01:05 AM  7 months agoPost 12
Gazza

rrApprentice

Australia

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I did change the fuel lines..
May I ask what you guys use for pick up in tank ?
Mine has the normal metal Gasser clunk...

Melbourne Victoria

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03-30-2018 01:44 AM  7 months agoPost 13
rbort

rrProfessor

Franklin, MA - USA

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Clunk
Zenoah felt clunk, good to the last drop...literally!

-=>Raja.

MA 1005 Hanson 280, 4220 flts
Spectra 27 3DMax, 3310 flts
Whiplash V1-2 Hanson 300, 1618 flts
Whiplash V2 Hanson 300, 473 flts

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03-30-2018 01:47 AM  7 months agoPost 14
torque

rrKey Veteran

bolivia , north carolina

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years ago I had a xcell 1005. I had a similar prob. the heat built up from
the engine around the carb and the fuel almost vaporized. I had to make a shield and put it between the carb and engine to keep the heat off of it. it
ran fine then. 2 diff. engines maybe the same prob. good luck.

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03-30-2018 02:22 AM  7 months agoPost 15
BeltFedBrowning

rrKey Veteran

Kansas City

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I use a heavy metal klunk

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03-30-2018 04:01 AM  7 months agoPost 16
Gazza

rrApprentice

Australia

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The needles are both at 1-1/2 out

Melbourne Victoria

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03-30-2018 04:13 AM  7 months agoPost 17
Gazza

rrApprentice

Australia

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There is no shield between isolating block and carburetor..

Melbourne Victoria

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03-30-2018 04:29 AM  7 months agoPost 18
BeltFedBrowning

rrKey Veteran

Kansas City

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I don't know what carb you have, but on my older carbs, 1 1/2 turns would be a little fat and might cause the issue you describe. My old Mongoose runs 1 1/8 on the low and 1 1/4 on the hi needle.
Have you tried it without the air cleaner, or a different one?

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03-30-2018 07:11 AM  7 months agoPost 19
rbort

rrProfessor

Franklin, MA - USA

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Wrong needles
No carburetor runs properly with both needles at one and a half turns out. Not the original 167a carburetor, not the replacement 643 carburetor, and not the latest 990 carburetor. They all use different settings, but none use both at one and a half out.

Also, what’s with all the complicated Plumbing? I see the vent is plugged, are you unplugging that before starting it?

-=>Raja.

MA 1005 Hanson 280, 4220 flts
Spectra 27 3DMax, 3310 flts
Whiplash V1-2 Hanson 300, 1618 flts
Whiplash V2 Hanson 300, 473 flts

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03-30-2018 10:34 AM  7 months agoPost 20
Gazza

rrApprentice

Australia

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The vent line was like this when I got the model second hand so I left it like this, it goes in a circle then through the bottom of the frame so it's not plugged up...if it's plumbed wrong then how should it be....?

Thanks for all the help it's very much appreciated....

Melbourne Victoria

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