Side by side non scientific comparison... (Full Version)

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quint-rcu -> Side by side non scientific comparison... (8/22/2002 12:12:27 AM)

We had a discussion going at our field last month about Wildcat vs. Omega/Cool Power in Saito engines. After much jaw-boning We got three of our Morgan fuels users to run two tanks of Wildcat in their Saitos (1 - .91, 1 - .72, and 1- .56). Each engine was run with the original fuel and optimized 200 down from full RPMs and tached. The the fuel was changed to the Wildcat and the engines were re peaked and tached.

All three gave higher RPM readings on Wildcat with the same nitro content and the .91 and .72 gave longer run times. None of the guys in our club that tried it were connected with either manufacturer and two of the guys were die-hard Cool Power users. - One switched and the other just told us off :) :D :D

Has anyone else tried this comparison and can share their results?

quint :D



DerFly -> Side by side non scientific comparison... (8/22/2002 1:17:07 PM)

All else being equal, the fuel giving more RPM and a longer run must have less oil in it! Are you willing to make this sacrifice?



quint-rcu -> Side by side non scientific comparison... (8/22/2002 9:12:19 PM)

That's a good point, so I searched the oil contents: Cool Power 17 - 18% Castor and Wildcat 18% Klotz. Could it be that since Castor doesn't burn at the Saito's combustion temperatures and Klotz synthetic does that we're seeing that extra bit of energy?

Still would be curious to see if other Saito owners get the same results.

quint :D



DerFly -> Side by side non scientific comparison... (8/23/2002 2:01:56 PM)

Quint,

Really can't comment on the fuels you used for this test as I exclusively mix my own. My comment was basically an aside from my own experience, that is, displacing the combustible in the fuel with oil will certainly give less power and a shorter run/worse fuel economy.

I believe that synthetic oil will burn, I am not convinced that it will produce power when burned. Is one oil a better lubricant giving more RPM? Does one fuel have better quality nitro? Is the methanol a higher grade in one of the fuels?

Good experiment with conclusive results. The question remains, "Why does one fuel give higher RPM?" I don't think it is possible to claim one fuel as being "better" on RPM alone without answering the other questions.

regards,



quint-rcu -> Side by side non scientific comparison... (8/23/2002 6:34:48 PM)

Right again, I didn't want to imply one was a better fuel than the other, just sharing an interesting result and wondering if it was just our conditions or if it would repeat somewhere else.

A second point is that old geezers will do many things when they get bored at our field... :rolleyes:

quint :D



jharkin -> Side by side non scientific comparison... (8/23/2002 8:07:10 PM)

[QUOTE]Originally posted by quint
That's a good point, so I searched the oil contents: Cool Power 17 - 18% Castor and Wildcat 18% Klotz. [/QUOTE]

Are you referring to cool power or omega? Cool Power is (according to the label) all-synthetic.



quint-rcu -> Side by side non scientific comparison... (8/23/2002 9:08:35 PM)

It was Omega we were refering to as containing Castor oil. The locals mix some Castor into their Cool Power and that threw me off into combining both types from Morgan into one category. Have you compared the Morgan to Wildcat on the same 4-stroker? I'm wondering if the results we got were peculiar to Saitos or if they would repeat with other brands?

quint :D



Elwood -> Side by side non scientific comparison... (8/24/2002 12:46:15 AM)

I did a little test on an AP .09 Hornet. Omega ran 100 RPM slower at peak than PowerMaster. The Omega was opened for a long time, but stored in the basement closet, sealed tight. The Cool Power was just opened. I bet they would have been the same if both were fresh.



POWERMASTER -> Different fuels (12/18/2002 9:05:56 PM)

Quint,
Check the [url]www.powermasterfuels.com[/url] web page and click on PwrPak on main page.



tdriver -> Side by side non scientific comparison... (12/19/2002 4:44:57 AM)

[QUOTE]Originally posted by DerFly
All else being equal, the fuel giving more RPM and a longer run must have less oil in it! Are you willing to make this sacrifice? [/QUOTE]

on first thought this would be a logical conclusion,
but,different oils have different results.

i'm mixing my own fuel,and the oil i use is motul micro (synth model oil) and exxon 2380 (aviation turbine oil).
i mix both 85%/15% (no nitro).

motul micro has a noticeable better performance (throttle response,and higher rpm, 100-200 revs.) than exxon2380.

exxon is much thinner than motul micro,and the main needle needs to close 1/8 to get peak performance,compared to motul.

before somebody say the methanol quality was different,i have to say that i mixed both with the same methanol.



hauckf -> Side by side non scientific comparison... (12/22/2002 11:52:02 PM)

"The locals mix some Castor into their Cool Power .."

Did the Morgan fuel you were testing against the Wildcat have some extra castor mixed in? If so, then the oil content in the Morgan may have been greater than the oil content in the Wildcat, and that could account for the difference in performance. Just a thought.



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