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HomeAircraftHelicopterEngines Plugs Mufflers Fuel › FOAM FOAM FOAM
06-03-2014 07:37 AM  4 years agoPost 1
3dgimble

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Rochester

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I just switch to Rotor Rage on my SRX and the foaming seems to be endless, now I have bubbles in the fuel line between the fuel pump to the carb, its causing some lean on the engine. Previous fuel never had nearly as much, is there something I can add OTHER THAN a header and or a condom/balloon?

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06-03-2014 12:48 PM  4 years agoPost 2
Tyler

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Chicagoland area

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Opening needles didn't help?

Enjoy things that money can buy IF you don't lose the things money can't buy.

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06-03-2014 04:17 PM  4 years agoPost 3
Russell Bear

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League City, Texas USA

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06-03-2014 04:51 PM  4 years agoPost 4
Grimracer

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Eau Claire WI

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I am going to get BLASTED for this...

Try a teaspoon (per gallon) of Armorall..

Grimracer

Michael J Zaborowski

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06-03-2014 05:24 PM  4 years agoPost 5
jake21

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ontario canada

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You might get blasted but it does work. He should find out why it is doing it though. Vibration some place

The only way to not crash is up

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06-03-2014 05:30 PM  4 years agoPost 6
3dgimble

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Rochester

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Its a 120SRX

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06-03-2014 06:01 PM  4 years agoPost 7
Tyler

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Chicagoland area

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Can you try more of the previous brand to verify the fuel is the culprit?

Changing fuel can only change needle settings or compression needs. You may have to shim, change plugs, or needles if fuel related.

Enjoy things that money can buy IF you don't lose the things money can't buy.

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06-03-2014 06:49 PM  4 years agoPost 8
Four Stroker

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Atlanta

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That about sums it up. Try an Enya #5 OR a shim OR fatten it up.

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06-03-2014 06:53 PM  4 years agoPost 9
3dgimble

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Rochester

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Everything is basically new, tracking is bang on, no vibes on tail. The fuel looked brighter uneven pink with LOTS of bubbles in it, it happens much when doing aggressive 3D, tic tocs and such. The other fuel did not do this the last I used it. I may switch back this weekend if my regular fuel comes back in stock at LHS.

Never thought plugs could do that nor changing CR, but I will try them, starting with the fuel, then switch from OS8 to Enya 5, and order head gasket for this weekend.

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06-03-2014 07:09 PM  4 years agoPost 10
helipulse

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Toronto, ON, CANADA

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Vapor Lock is the problem.

The problem is the YS carburettor.

Install a OS carb on that engine. Buz at Magnum fuel sells that adapter. Call him.

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06-03-2014 07:11 PM  4 years agoPost 11
Tyler

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Chicagoland area

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Changing fuel will cause vapor lock?

Enjoy things that money can buy IF you don't lose the things money can't buy.

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06-03-2014 08:53 PM  4 years agoPost 12
ticedoff8

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Morgan Hill, CA. USA

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I fly 3 different sizes YS engines and have never had fuel foaming due to a YS carb.

That's got to be the weirdest suggestion I've heard.

There is a high frequency vibration someplace.
Most likely in the motor. It could be a main bearing or something on the crankshaft.

If not the motor, it is the tail rotor / torque tube

Believe 1/2 of what you see and none of what you hear.
Fake News will be the downfall of our Republic!

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06-03-2014 10:13 PM  4 years agoPost 13
3dgimble

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Rochester

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It's a brand-new motor just landed on the market, I only have 1.7 gallons on it.
Try a teaspoon (per gallon) of Armorall..
Mr. Grimracer, I am going to try it, but will it make my engine gloss?

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06-03-2014 10:35 PM  4 years agoPost 14
jake21

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ontario canada

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Shake the **** out of your jug of fuel and watch how much it foams.
Add a small amount of armoral and shake it again and you probably wont be able to make it foam.

The only way to not crash is up

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06-03-2014 10:50 PM  4 years agoPost 15
rstacy

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Rochester, NY

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I am going to get BLASTED for this...
Try a teaspoon (per gallon) of Armorall..
Grimracer
A teaspoon per gallon is way way way way too much!
That much per gallon will cause problems with your glow plugs.

Many years ago I had the problem on one of my planes because the tank was hard mounted.

Just 2 or three drops per gallon is enough to cure the foaming.

Even if you have never had a problem, why put so much in if a few drops will accomplish the same thing.

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06-04-2014 02:32 AM  4 years agoPost 16
Grimracer

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Eau Claire WI

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my bad.. that's the max I have tested.. its not for everybody..

Truth is something else is the issue. Yea I have had fuels foam and others not...but its likely some other issue.

Grim

Michael J Zaborowski

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06-04-2014 02:55 AM  4 years agoPost 17
TMoore

rrMaster

Cookeville, TN

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What machine is the 120 in?

Delayed Response Operator Not Engaged
AMA SECTION 336 = Good
Drones = EVIL

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06-04-2014 08:02 AM  4 years agoPost 18
3dgimble

rrKey Veteran

Rochester

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I see air bubbles in the regulator as well, but not in the fuel hose that feeds the engine, that seems to be always clear. I tested it by landing the heli about 3 secs after doing fast tic tocs. You can see plenty of air bubbles and air gaps in the hose that feeds the regulator to the carb.
Sorta like my old YS 91SR-3DS.

I couldn't tell you if my OS had bubbles in there regulators, but I must say the OS DRS was more consistent no matter what happened, even if the tank was near empty.

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06-04-2014 05:46 PM  4 years agoPost 19
Grimracer

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Eau Claire WI

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Jake nailed it...

Michael J Zaborowski

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06-08-2014 09:46 PM  4 years agoPost 20
jake21

rrApprentice

ontario canada

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Any update?

The only way to not crash is up

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