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HelicopterGasser Model RC HelicoptersOther › High speed needle.
12-31-2010 09:27 PM  6 years agoPost 41
KopterKat

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New Jersey

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have you dis-assemblied the carb? Checked the diaphram or screen. Maybe there is some kind of blockage that is restricting the fuel flow.


FlipMode Squad

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12-31-2010 10:12 PM  6 years agoPost 42
SeismicCWave

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Hilo, Hawaii

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>>have you dis-assemblied the carb? Checked the diaphram or screen. Maybe there is some kind of blockage that is restricting the fuel flow.<<

I did with one of them. I have not done anything to the other one. It could very well be a small sliver of rubbish. Unfortunately I don't have a rebuilt gasket kit on hand to try it yet.

I will order a kit and get to the bottom of this. I do have a new carburetor coming so I can do a comparison.

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01-01-2011 04:51 AM  6 years agoPost 43
KopterKat

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New Jersey

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Good luck and keep us posted. This was a very informative thread.


FlipMode Squad

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01-01-2011 07:41 AM  6 years agoPost 44
SeismicCWave

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Hilo, Hawaii

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>>Good luck and keep us posted. This was a very informative thread.<<

Thank you I will. I sure hope I can find some answers to help the next person to not having to go through all the frustrations.

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01-04-2011 01:54 AM  6 years agoPost 45
SeismicCWave

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Hilo, Hawaii

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Latest update. Finally the holidays are over and I can get parts again. I bought a Walbro rebuild kit K24-WAT from a garden store in town. Changed the gaskets on the old carburetor and wanted to test it. Then I figured what the hell I may as well take apart the carburetor that is surging and see if there is anything wrong since I have new gaskets.

So I figured the primer bulb side is fine since that is working. So I took off that one big main screw on the fuel inlet/diaphragm pump side.

Sure enough the beige colored (coloured for the flyers across the pond. Two ponds from me) diaphram pump is pretty used looking and it is wavy and curled. So I just put in the new diaphragm and close it back up.

Played around for a bit with a starter since I really don't like pull starting these guys.

I had both needle out at 1 1/2 turns from close. It took a bit of playing around and it started. Then it quit. Then it won't start again.

I still have compression so I know it is ok. Not the stuck ring again.

So I took off the plug and check and the plug is all wet! I actually flooded the engine! I think this is the first time I had too much fuel.

So I pulled the fuel line and spin the engine without the plug. Then I put the plug back in and spin the engine until it started.

After that it was ok. It fired up, idled and hovered pretty well.

Then I decided to take it out to the backyard with bigger space. I pull cranked it and it fired right up. So I took it up into a hover. It surged a few times so I brought it down and adjusted the needle. Both low speed and high speed. I finally settled on around 1 7/8 turn from close for the high speed needle and 1 5/8 turn for the low speed needle.

It seems to be running pretty good now. Except my UFO air cleaner disintegrated. The aluminum actually cracked and the outside half just fell off. I bet it is metal fatigue from all the vibration with a mis- adjusted engine.

Then the mail person showed up and I have all kinds of goodies from Dave's Motor. I got the aluminum (aluminium) adapter block. I got some Blue Marble oil. I got another carburetor to try and I got more gaskets besides a couple of NGK plugs.

I will be testing the new carburetor tomorrow.

FWIW the Stator Gator is dead. It is not sending anything to the Governor. I also had a minor scared at one point. After the first hover, the throttle will not come down. I was wondering what is going on. I managed to kill the engine with a long stick pushing into the carburetor opening. I found out that the Stator Gator ground wire had melted and grounded against the engine. The governor was glitching and the throttle servo will not move.

So I pulled the Stator Gator and everything is ok.

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01-04-2011 03:00 PM  6 years agoPost 46
Dr. Fibinotchi

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Sioux Falls SD

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hmm

Glad you kept with it. Adult swim.

-Cody

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

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01-04-2011 05:53 PM  6 years agoPost 47
Dave Willis

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Sevierville, TN USA

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Good News

I'm glad you're getting things straightened out. I know how you feel, I'm getting pretty Discouraged myself.
Can't wait to hear from you tomorrow.

Dave

Futaba AMA 6679 IRCHA 675 VHA 11

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01-04-2011 07:12 PM  6 years agoPost 48
shawmcky

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Isle of Wight,United​Kingdom

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Stick with it ,you will learn a lot through your experiences and be glad you did.

Team- unbiased opinion.K.I.S.S principle upheld here

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01-05-2011 05:39 AM  6 years agoPost 49
SeismicCWave

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Hilo, Hawaii

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Ok, new engine is in! Let's see what it will do tomorrow.

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01-05-2011 01:28 PM  6 years agoPost 50
Dave Willis

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Sevierville, TN USA

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SeismicCWave

Did you decide not to change carburators?

Dave

Futaba AMA 6679 IRCHA 675 VHA 11

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01-05-2011 03:07 PM  6 years agoPost 51
Chris Bergen

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cassopolis, MI USA

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SiesmicCWave, Any video of your heli flying by any chance?

Chris D. Bergen

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01-05-2011 04:01 PM  6 years agoPost 52
SeismicCWave

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Hilo, Hawaii

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>>Did you decide not to change carburators?<<

I will eventually. Right now I want to see what a stock 231 does instead of a modified 260.

>>Any video of your heli flying by any chance?<<

Not as simple when I am the only one doing the flying and no one around to do the video tape. I almost did it when the engine was surging. I will see what I can do.

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01-05-2011 06:12 PM  6 years agoPost 53
Chris Bergen

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cassopolis, MI USA

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Out of curiosity, what headspeed are you running?

Chris D. Bergen

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01-05-2011 09:21 PM  6 years agoPost 54
SeismicCWave

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Hilo, Hawaii

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New engine!

>>Out of curiosity, what headspeed are you running?<<

I have no clue. My guess is between 1400 and 1500 rpm. Edit: (BTW, I was watching the video and saw that the blade blur was retreating a little. So my guess is that the head speed must be somewhere as a multiple of 30. Since I am shooting at 30 fps. That probably meant I am pretty close to 1500 or just a little less.)

Sorry Dave Willis, I am NOT going to bang my head against the wall anymore. There is really no reason to spend all these time, effort and money to chase after a ghost when a new engine solved all the problems.

I just finished test flying the helicopter with the brand new Zenoah G231 PUH. Rock stock from Heliproz. No balancing the flywheel. No lightening the piston, nothing.

The engine even came with a nice looking manual. The manual said, "don't adjust the needles if the engine runs ok."

So I didn't touch the needles.

Now the engine behaved like a new weed eater - perfectly.

Prime the bulb until fuel started to flow back on the return line, check.
Close the choke on the air filter, check.
Pull the starter until engine catches, check.
Engine caught on the second or third pull. I was not hot and sweaty and my arm was not falling off. So I open up the choke, check.
I made a lock so the choke doesn't close accidentally in flight (it did one time).
The next pull the engine fired up.

RPM was a little high so I just dropped throttle trim until it is nice and smooth.
Let the engine warm up a little bit and slowly advance the throttle.
No hesitation, no coughing, no surges, no anything. The engine just increase rpm as I advance throttle.
A bit of ground resonance at 3/8th stick but nothing crazy.
Keep in advancing smoothly and lifted off cleanly.

Wow, am I dreaming? The helicopter has never lifted off this well except for when I had the electric motor in it.

I did use my side mount Zimmerman muffler instead of the Century Torpedo and it sounded nice.

My daughter was home so I asked her to bring the video camera and shoot some video of it hovering. I am loading it on You Tube as I type. I will attach a link when it is done.

Minor movement on the pull starter handle. Minor vibration noticed at the lower tip of the vertical tail fin. Not a blur and not perfectly still but some noticeable oscillation. A bit more high frequency vibration than an electric which is expected.

The fuel started foaming when the tank ran low. I expected that with the tank almost butting up against the engine and hard mounted.

Overall it is sweet and I believe I have finally tasted a flying gasser.

Now I have to get a new Stator Gater and try to get the governor working.

YouTube just finished:

http://www.youtube.com/watch?v=2rXs2vHZ2hc

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01-05-2011 09:34 PM  6 years agoPost 55
BeltFedBrowning

rrKey Veteran

Kansas City

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At least check the needles to see how far they are out. A friend of mine burned up his Mongoose by not checking the needles. Yes, it did fly but it got stinking hot!

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01-05-2011 09:59 PM  6 years agoPost 56
SeismicCWave

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Hilo, Hawaii

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>>At least check the needles to see how far they are out. A friend of mine burned up his Mongoose by not checking the needles. Yes, it did fly but it got stinking hot!<<

Thank you. Curiosity will eventually catch up to me and I will check the needles. In the meantime I am just going leave them as they are.

I did check the temperature of the engine after I flew. I flew for 13 minutes with the tank at about 3/4 full. I let the helicopter spool down after landing and went to get my temperature gun from the garage.

After I killed the engine I point the laser dot all over the engine. The exhaust port, the muffler, the block, the head everything. The hottest I get was 168 degrees F.

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01-05-2011 10:12 PM  6 years agoPost 57
shawmcky

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Isle of Wight,United​Kingdom

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Watched the video looks and sounds good.

Team- unbiased opinion.K.I.S.S principle upheld here

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01-05-2011 10:21 PM  6 years agoPost 58
BeltFedBrowning

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Kansas City

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Whew! You had me scared that you weren't checking the temps! Enjoy that gasser!

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01-05-2011 10:25 PM  6 years agoPost 59
SeismicCWave

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Hilo, Hawaii

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>>Watched the video looks and sounds good.<<

Thank you. I am going to fly again. This is getting me charged up again!

>>Whew! You had me scared that you weren't checking the temps! <<

LOL, I may be crazy but not dumb.

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01-06-2011 12:18 AM  6 years agoPost 60
Dave Willis

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Sevierville, TN USA

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SeismicCWave

Sorry, I thought you ordered a new Carb, I was just wondering if the carb was the culprit.
I'm Glad you got it straightened out.

Dave

Futaba AMA 6679 IRCHA 675 VHA 11

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