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HelicopterThunder TigerRAPTOR 30 › Run tank dry or no?
01-01-2010 03:46 PM  7 years agoPost 1
dbldins

rrVeteran

Danville,Ky.

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I'm wondering. Do you gents run your tanks completely dry or no? Please be kind as to give reasons why. Thanks.

I'm addicted to flying! Seriously!! I need rehelihab!

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01-01-2010 03:59 PM  7 years agoPost 2
FlaG8r

rrElite Veteran

Florida

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If you run it dry while still flying or hovering you are going to get that engine VERY hot and it will be running real lean, not good. End your flight with just a little fuel left and then let it idle until it runs out, either on the bench or on the ground.

Life is tough, it's tougher if you're stupid

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01-01-2010 05:24 PM  7 years agoPost 3
nitrojunkie

rrApprentice

N.C

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I second letting it run out while idleing on the ground.

I love the smell of nitro in the morning..

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01-01-2010 09:21 PM  7 years agoPost 4
BarracudaHockey

rrMaster

Jacksonville FL

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Yup, runs it lean if you do it in the air.

I just land, shut the fuel down and run it dry on the bench.

Andy
AMA 77227
http://www.jaxrc.com

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01-01-2010 11:00 PM  7 years agoPost 5
tryan02

rrProfessor

Canton, Missouri

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What does this do for you to run it dry?
Is it burning whatever oily sludge may be left in the cylinder?
And is the procedure I do below doing the same thing?

I setup a throttle cut on the momentarty switch on my TX hold it up it closes the carb completely till the motor dies. Then I tilt it up and pump all the fuel out with a hand pump.

No Really I am the club President!!!

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01-01-2010 11:07 PM  7 years agoPost 6
GRINCHMAN

rrApprentice

IL

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I have ran my fuel out in the air on the last flight of the day for years.I always run my engines a little rich though. I always get them on the ground and put a glow driver on it and put the starter on it to burn all the fuel out also.

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01-02-2010 05:45 AM  7 years agoPost 7
jschenck

rrProfessor

La Vista, NE.

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put a glow driver on it and put the starter on it to burn all the fuel out
me too - don't want any fuel left inside the engine. Pop the backplate off and you'll see there is plenty of oil still in there.

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01-02-2010 02:06 PM  7 years agoPost 8
Swoop

rrElite Veteran

Newark, DE USA

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What does this do for you to run it dry?
I gets the residual fuel out of the crankcase. It is this residual fuel that attracts moisture and promotes rust. Also cranking it over without a glow stick once its out of fuel pushes the damaging gases out as well.

Chris
X50, B320, Radix, Spartan
Titan,Kasama,MP5,Radix,JR770
Trex450SE,MavrikkG5,Phoenix35

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01-03-2010 10:08 PM  7 years agoPost 9
datidun

rrKey Veteran

N Ireland

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cant see the point of running it dry ,when it lands still on idle , i clamp the fuel line the rest of the fuel is pumped out , i did so much research on this ,even if you run the bearing dry there is still fuel left all over the bearing where the acid attacks causing rust ,after flying for the day i spray a high performance lubricant down the carb and turn the engine over a few times

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01-03-2010 10:18 PM  7 years agoPost 10
tryan02

rrProfessor

Canton, Missouri

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I have been believing the label on my fuel says DO NOT use an after run oil. Morgan fuels contain oils and antioxidants for resting engines.

I run 30% coolpower at $30 a gallon the above label is one reason I have been buying the stuff.

Have I been duped into believing something false or am I missing something here and not understanding whats really going on?

As I said before I fill the tank fly use the throttle cut on my radio essentially the same as pinching the fuel line and remove the rest of the fuel from the tank with a pump.

No Really I am the club President!!!

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01-03-2010 10:28 PM  7 years agoPost 11
datidun

rrKey Veteran

N Ireland

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ye i know what your saying ,i know of one fuel eg cool power says do not use with after run oil,most probably its got a good lubricant,i came across a guy also on rr using cool power had problams with his 50 hyper took of the backplate and all he could see was rust

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01-04-2010 12:20 AM  7 years agoPost 12
Raptor Pilot

rrVeteran

Northern Ireland U.K

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I normaly run all my helis dry untill they stop on the ground. My reason for doing this is that it could be 1 day or 1 month or 1 year before i fly it again so i like all the fuel out of the carb venturi as i have found that if any of my helis sat for a year and i go to fly it the fuel has dried out and left the oil behind which has nearly dried and is now blocking the venturi and gives you unwanted hassel before you get the thing going again. Never have had any problems since i started doing this.

If it doesnt move and its meant too... use WD 40. If it moves and its not meant too...use duct tape!

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01-04-2010 12:29 AM  7 years agoPost 13
jschenck

rrProfessor

La Vista, NE.

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I run mine with a glow lighter on at the bench, fuel line pulled off, until it stops kicking. Then full throttle for about 5 seconds of cranking. If I think it'll be a while before I fly I'll block the exhaust off and crank some more to push the exhaust out of the tank and any raw fuel out of the lines.

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01-04-2010 03:46 AM  7 years agoPost 14
AMainMaker

rrKey Veteran

Nappanee,IN

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I never run mine dry. I land when done flying. Kill the motor with the transmitter and drain the tank. Never had any engine issues to date. My 50 has been sitting for 2 months. I took the engine apart just to check to see if I need to rebuild or not and the engine looks fantastic. Dropped a little oil on the bearing and ring and let it sit till it warms up enough to fly again. I am using CP 30%.
Jason

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01-04-2010 10:28 PM  7 years agoPost 15
Raptor Pilot

rrVeteran

Northern Ireland U.K

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I am using CP 30%.
And so am i,its a mighty fuel.

If it doesnt move and its meant too... use WD 40. If it moves and its not meant too...use duct tape!

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01-04-2010 10:32 PM  7 years agoPost 16
colsy

rrElite Veteran

Cambridge, UK

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I land and without running out!!
Fuel it up, and leave it!!
Been flying nitros 4 years, and never changed a bearing. 'ever'

col.

Only Quote From Experience.

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01-04-2010 11:34 PM  7 years agoPost 17
tryan02

rrProfessor

Canton, Missouri

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never run mine dry. I land when done flying. Kill the motor with the transmitter and drain the tank. Never had any engine issues to date. My 50 has been sitting for 2 months. I took the engine apart just to check to see if I need to rebuild or not and the engine looks fantastic. Dropped a little oil on the bearing and ring and let it sit till it warms up enough to fly again. I am using CP 30%.
Glad to hear that its what I do with Coolpower 30%.

Colsy you leave fuel in the tank?

Does the nitro a alcohol not eat the fuel tubing? Or do you replace it often?

No Really I am the club President!!!

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01-05-2010 01:17 PM  7 years agoPost 18
Swoop

rrElite Veteran

Newark, DE USA

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Does the nitro a alcohol not eat the fuel tubing? Or do you replace it often?
Its not the nitro that kills the fuel lines, its the exhaust gases from the pressure line.

Chris
X50, B320, Radix, Spartan
Titan,Kasama,MP5,Radix,JR770
Trex450SE,MavrikkG5,Phoenix35

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01-06-2010 03:24 AM  7 years agoPost 19
JKEP44

rrNovice

Sheridan, WY - USA

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I also run cool power, and believed the "DO NOT USE AFTER RUN OIL". I believed it right up to the point where my rear bearings on my hyper had rust after 3 gallons and needed to be replaced. I would land, turn off the engine, close the fuel line and fire up the engine again until it died. Now I do those same steps only I disconnect the fuel line and use a little piece of fuel tube to pump in after run oil as I turn over the motor.... 4 gallons on this set of bearings so far with no issues. I think just about anything you do is okay as long as you dont leave the heli sitting without running for more than a couple weeks. My bearing problems started after sitting for 4 weeks while I was on vacation.

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01-06-2010 08:34 PM  7 years agoPost 20
skypup

rrVeteran

San Antonio, Texas

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fuel lines

Its not the nitro that kills the fuel lines, its the exhaust gases from the pressure line.

Chris
Titan,Kasama,MP5,Radix
Trex450SE,MavrikkG5,Phoenix35

I had 2 consecutive clunk failures on 2 consecutive days with a raptor and JR schweizer a few years back. Autos both times. There were holes in the clunk lines and even though I always drained my tank I found it best to replace the lines every 6 months to a year. I ran 30 percent. I always thought it was the nitro content.

SKYPUP

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