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HomeAircraftHelicopterMain Discussion › Castol or not Castor ?
10-08-2013 03:23 AM  4 years agoPost 1
Vaderluck

rrApprentice

Melbourne - Australia

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Do I really need to use Castor oil in heli glow plug engine ?
The OS (and Thunder Tiger) manual do not specify castor oil must be used. I think castor oil causes more smoke in the exhaust, so maybe better off just use synthetic. Is it right ?

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10-08-2013 03:31 AM  4 years agoPost 2
NQNA

rrElite Veteran

USA

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Very few fuel manufactures use castor anymore.. Go full synthetic..

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10-08-2013 03:39 AM  4 years agoPost 3
AWittleWabbit

rrElite Veteran

O.C., CA

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I can't think of a fuel for helis that has Castor oil in it. Not in this decade anyway.

Heli-itis sufferer.

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10-08-2013 04:04 AM  4 years agoPost 4
JRjoe

rrElite Veteran

Jonesville , IN USA #1

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Never used castor in any of my helis. Have always used cool power heli mix since 1999....


JRjoe.....
Indoor plumbing??? No, we don't need that!!!

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10-08-2013 04:08 AM  4 years agoPost 5
Isaac F

rrKey Veteran

Panama Republic of Panama

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Maybe I am wrong but is good to use a small % of castor oil on ABC engines. On engines that use piston ring "ONLY" use 100% Synthetic.

Speed of light is greater than speed of sound. Some people seem very bright until U hear them speak

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10-08-2013 04:24 AM  4 years agoPost 6
turboomni

rrProfessor

East of the Equator

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Use castor oil only if you are constipated ,,no use on engines anymore. It worked well in WW1 on airplanes

Setup is everything, All my heli's can fly far better than I can pilot them

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10-08-2013 04:57 AM  4 years agoPost 7
Vaderluck

rrApprentice

Melbourne - Australia

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I just check Thunder Tiger manual
Most fuels containing synthetic lubricants (only) are
much less tolerant of a lean run compared to fuel that contains
castor oil. If availability or local conditions force you to use a fuel that contains only synthetic lubricant, we suggest that you keep
your needle valve set to a slightly richer setting, allowing more
lubricant to flow through your engine to extend engine life and
maintain optimum reliability.
It is alluding to castor provide better lubrication than synthetic alone.

Coolpower (in Australia anyway) still supply fuels with castor 8% + synthetic 10%.

So I am

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10-08-2013 05:01 AM  4 years agoPost 8
rpat

rrElite Veteran

Weirton, W. Va.

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Yea castor may very well be a better lube but the after affects of castor, gummed up engines, and mufflers that look like they have been dipped in burnt motor oil.

trex 700fbl cal30,minititan,, trx600fbl,trex250,logo 500,Velocity N2

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10-08-2013 07:10 PM  4 years agoPost 9
jackp332

rrKey Veteran

Claremont, Nh USA

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Thanks for the tip turboomni

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10-08-2013 11:51 PM  4 years agoPost 10
JasonJ

rrKey Veteran

North Idaho

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They still sell castor/syn blend for airplane engines. I like to use that stuff in my airplanes pretty much for the smell. I like the castor smell. I use my 30% heli fuel in my 4 stroke Saito engines though, those engines love heli fuel, they run awesome on it.

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10-09-2013 01:29 AM  4 years agoPost 11
dkshema

rrMaster

Cedar Rapids, IA

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Castor oil has some properties that you might like in your engine. Engines run on castor-based fuel will tolerate a lean run somewhat better than that when run on synthetic lubed fuel.

Castor will burn as it gets hot, taking with it some of the excess heat with out, out the exhaust. It also leaves behind a gummy residue called varnish. Varnish builds up on the piston's skirt and on the inner cylinder walls.

Although you might survive a lean run or two better, the varnish buildup also tends to make the motor run hotter, and therefore, create more varnish. At some point the motor just begins to run hot, and poorly. This can become a vicious cycle until you get fed up with a finicky motor and tear it down and clean it.

The solution is to dismantle the motor, clean it, reassemble, and continue flying it. Cleaning is not difficult, there are all sorts of ways to do so; some are more tedious and messy, some are not that bad.

-----

Synthetic lubricants usually just break down under the same conditions and provide no protection at all. Instead of being left with a gummy residue that can be cleaned off, you're replacing pistons, rings, and cylinders.

-----

Nitro motors in helis run hot -- the cooling just isn't near as good as it could be in a plank, where for the most part, the whole motor is out in the wide open with plenty of air moving past it. As a heli motor runs hotter, the castor stuff creates the need to tear things down once in a while to clean out the motor. I don't know about you, but having to remove and replace a motor in a heli is not among top ten list of things to do.

-----

Synthetic lube-based fuels are less forgiving in a hot, lean environment, but the varnish buildup and continual need to clean your motor isn't a problem. If you tune your carb well, and somewhat on the rich-side of things, synthetic lube-based fuels perform well, your engine will last a long, long time.

-----

The choice is yours, but if you take some care in the proper feeding of your motor, synthetic lube-based fuels can be one of your best friends.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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10-09-2013 01:44 AM  4 years agoPost 12
HeliOCD

rrVeteran

San Diego, CA

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For some reason im reminded of Fletch....

Hey! It's all ball bearings nowadays. Now you prepare that Fetzer valve with some 3-in-1 oil and some gauze pads. And I'm gonna need 'bout ten quarts of anti-freeze, preferably Prestone. No, no make that Quaker State.

Its all earth!

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10-09-2013 02:18 AM  4 years agoPost 13
GREYEAGLE

rrElite Veteran

Flat Land's

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Be aware the Lubricant package is the most $$$ expensive component in the Gal Jug you purchase.

Their are 128 Oz to a gallon and 12 OZ in a can of coke, all most 10% by Volume.

Then next time your in a race shop or a good auto supply or bike shop check the price of 1 Quart of pure Syn Lubricant. Blue Marbel, Klotz, Bel Ray, QuickSilver, Penn Syn, Amsoil, ect.

With some basic math you will have lot of question's

Also note: That the Syn's are SO-oooo good they can actually mask a bearing problem / hide or a lean run problem / Hence why they are so popular in industry - you can push them way past a conventional product to keep a sour bearing running at all cost's. The long chain molecule.

The Mask problem - then can kick in sooner or later, unexpected - stuff is a miracle but not a remedy for a shot bearing or spalled shaft but they can buy time .

Castor is one of those natural's that will add a bit of edge to prevent a error.

I dope all my fuel and when needed do a tear down every few year's.

greyeagle

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10-09-2013 02:24 AM  4 years agoPost 14
jbjones

rrVeteran

Columbus, Mississippi

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GREYEAGLE Their are 148 Oz to a gallon
No sir. There's 128 fluid ounces to a gallon. It'll change your math totally if you use 148!

-Joey

J. B. Jones

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10-09-2013 02:31 AM  4 years agoPost 15
GREYEAGLE

rrElite Veteran

Flat Land's

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Thanx ! To much math today I been working in inches

Makes the 12 OZ Coke Can Oz Thingy even more Quizical

Thanks very much

greyeagle

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10-09-2013 03:04 AM  4 years agoPost 16
Ace Dude

rrProfessor

USA

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No sir. There's 128 fluid ounces to a gallon.
That's assuming you're referring to a US gallon and not an imperial gallon. Gotta love all those standards.

  

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10-09-2013 05:19 AM  4 years agoPost 17
turboomni

rrProfessor

East of the Equator

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I had a OS Hyper 50 on a Raptor 50 years ago,, I remember about once a year the main bearing would have to be replaced running 30% full synthetic oil. Would castor oil instead have prevented that?

Setup is everything, All my heli's can fly far better than I can pilot them

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