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HomeAircraftHelicopterGasser Model RC HelicoptersOther › Hanson 3d Max no worky :(
04-01-2009 10:56 AM  9 years agoPost 1
gorn

rrElite Veteran

Western Australia

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Well it had to happen, sooner or later I was going to have to chase my tail with a gas motor.....like I didnt enough with the tuned pipe saga.
After the video I posted, I leaned the high needle out 1/8th (high was at 1 1/2 before).
Motor wouldnt start after that.
Pulled the basic carb parts apart, and found some small amounts of crud, cleaned and re-assembled.
I had put the pullstart back on, 3 pulls and she fired up, nice idle.
Hovered a whole tank in my yard without issue.
Next time out, it wouldnt start, had to use the Sullivan, and even then it took a bit to get it going.
So anyway, I get it started and start doing full power climbs and then decending rapidly to check engine tuning.
Few tweeks of the low needle got rid of any hiccups.
Was flying great, extremely smooth through 1600 1700 and 1850rpm.
The all of a sudden the enging kinda goes brrrrrRRRRRRR and loses lots of power, just barely got it down.
Thought I had maybe run it too lean, checked the plug, nope still black but dry.
Almost impossible to start after that. Motor turned over easily though.
So Ive bought a rebuild kit for the 813 carb, done the diphragm, a few gaskets and one gauze filter. Also the diaphragm under the pump bulb.
Nope still wont start.
looked down into the motor when the carb was off, all looked fine in there.
My last resort will be ordering that Walbro metering valve tool and replacing that needle and spring after giving it a good blow out.
Am I looking in the right direction, or does it sound terminal?
Never had a lean run really, maybe less than a minute, but easy to catch by sound and vibes.
Opinions please

For the love of the hobby

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04-01-2009 11:05 AM  9 years agoPost 2
shawmcky

rrElite Veteran

Isle of Wight,United Kingdom

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Engine probs
Have you changed the plug?Even if new,a oily,sooty plug can track to earth on the porcelain crud.

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04-01-2009 11:15 AM  9 years agoPost 3
gorn

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Western Australia

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that was my 2nd plug, but it had been used previously.
I'll get a new one and try that as well.

For the love of the hobby

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04-01-2009 11:18 AM  9 years agoPost 4
shawmcky

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Isle of Wight,United Kingdom

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Check Compression
Whip the plug out and spin it over with the Sullivan,A,to clear any excess fuelout,B stick your finger over the plug hole and check the compression,should blow your finger off quite easily if using the Sullivan.

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04-01-2009 11:23 AM  9 years agoPost 5
shawmcky

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Isle of Wight,United Kingdom

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If you have any carb cleaner spray,clean the crud from your plugs,let them dry out or blow them out
Are you using NGK plugs?as others dont clear well after fouling,even NGK plugs dont like too much fouling though.

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04-01-2009 11:29 AM  9 years agoPost 6
gorn

rrElite Veteran

Western Australia

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I'll do the compression check.
Yep NGK, will buy some carb cleaner.
I dont mind having to pull things to bits, just so long as I know what Im doing lol.
Carbs are NOT my forte
But Im learning.
Someone needs to do a maintenance and repair video for these carbs for dummies like me lol

For the love of the hobby

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04-01-2009 11:36 AM  9 years agoPost 7
shawmcky

rrElite Veteran

Isle of Wight,United Kingdom

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Engine probs
I am sat in my workshop waiting for some Mercedes parts at the moment,been a bit slow this week,glad i have this computer some times,helps kill some waiting time.

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04-01-2009 01:39 PM  9 years agoPost 8
gorn

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Western Australia

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lol, my PC helps with crap television, seems to get worse and worse these days

For the love of the hobby

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04-01-2009 02:15 PM  9 years agoPost 9
shawmcky

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Isle of Wight,United Kingdom

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Killing time
Know what you mean about crap TV,must be a world wide disease now.Most of my free time seems to be spent on the PC learning and studying all things aviation that i am interested in.Its great to be in contact with people across the globe with similar interests.RC Helicopters seem a far bigger thing when your connected to the net with a much larger audience.

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04-01-2009 02:46 PM  9 years agoPost 10
gorn

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Western Australia

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agreed on all points there

For the love of the hobby

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04-01-2009 04:59 PM  9 years agoPost 11
TaleGunner

rrElite Veteran

Deer Park WA

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http://www.drystacked.com/Walbro%20...ry%20ebook1.pdf

CRASH! GLUE! REPEAT!
Spectra-G, Ion X-2

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04-01-2009 06:45 PM  9 years agoPost 12
TaleGunner

rrElite Veteran

Deer Park WA

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I just got off the phone with Al from hanson and he said not to use carb cleaner or compresed air on these carborators

Dont know what were suposed to use

CRASH! GLUE! REPEAT!
Spectra-G, Ion X-2

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04-01-2009 08:24 PM  9 years agoPost 13
Doug Darby

rrVeteran

Dallas, Texas

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TaleGunner...

Great site for Walbro carb info..

Thanks for sharing

doug

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04-02-2009 02:47 AM  9 years agoPost 14
Dr. Fibinotchi

rrKey Veteran

Sioux Falls SD

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hmm
Gorn,

Sorry to hear that man. I had something similar last summer and even purchased a spare carb as well as rebuilt mine. I did find junk in the small screen and spent some time getting the crud out. Goes to show how sensitive the carb is.

That is a good site on carbs. Second that.

-Cody

If you want others to be happy, practice compassion. If you want to be happy, practice compassion.

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04-02-2009 02:52 AM  9 years agoPost 15
TaleGunner

rrElite Veteran

Deer Park WA

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Billme recomended useing a lighter/flame on that screen

CRASH! GLUE! REPEAT!
Spectra-G, Ion X-2

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04-02-2009 05:11 AM  9 years agoPost 16
Justin Stuart (RIP)

rrMaster

Plano, Texas

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Its great to be in contact with people across the globe with similar interests.RC Helicopters seem a far bigger thing when your connected to the net with a much larger audience.
I couldn't agree with you more.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

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04-02-2009 06:27 AM  9 years agoPost 17
Peterr

rrApprentice

Queensland Australia

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Did you check for spark with the plug out , but touching the head ??

As I found out quite recently , it doesn't take long , 15secs maybe , to destroy a hanson when the inlet manifold, ZRC, comes loose....

E ,N ,G Whiplash's;Spectra G's;Stratus;E&N Razor,Fury 55;Furion6;TSA 600N, 700N, 700G;; Be

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04-02-2009 08:47 AM  9 years agoPost 18
Trevor G

rrApprentice

Brisbane, Australia

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`As I found out quite recently , it doesn't take long , 15secs maybe , to destroy a hanson when the inlet manifold, ZRC, comes loose....`
Peter,
You could cross drill the bolt heads and lockwire it on. It never comes loose then. I just used a peice of heatshrink where the lockwire wraps around under the ZRC spacer. I did the same to the exhaust.

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04-02-2009 02:41 PM  9 years agoPost 19
gorn

rrElite Veteran

Western Australia

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My Z RC insulator has never come loose.
It was one of the initial things I checked.
Had to use a fair amount of pressure to un-do the bolts.
I have sourced another carb locally.
I dont have the time to mess around with rebuilding the carb.......However I will completely rebuild this carb....but in the mean time I'll run a new one lol.
Cant stand learning but not flying.
I'll learn and fly at the same time thanks very much
If it doesnt turn out to be the carb at all, I'll just send the whole lot to Hanson for a rebuild.
I absolutely love the way my heli flies, but anything with rotors and an engine is a PITA at times lol.
Thank god Im not married too!

For the love of the hobby

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04-02-2009 03:02 PM  9 years agoPost 20
Justin Stuart (RIP)

rrMaster

Plano, Texas

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Thank god Im not married too!
At least these helicopters have logical reasons why they get upset and don't work correctly (i.e. dirt in the carb). Women do not follow the same rules.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

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