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Best Fuel to run

Old 10-28-2022, 01:52 PM
  #16  
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ROFL...................
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Old 10-28-2022, 07:34 PM
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Originally Posted by Ivorycu View Post
Hello,
Just bought a SH .28 8 port engine.
What is the best % of Nitro Fuel and Oil % to Break in Engine and to continue using?
I use 30% nitro with 11% oil, which I raise to 12% by adding a shot-glass of natural castor oil to each gallon. The tiny amount of natural castor oil allows the fuel to build up a small amount of varnish inside the engine over time, just enough to improve lubricity and fill in microscopic scratches.

The big thing is to take apart the engine before using it, check for any burrs along the machined edges (especially the ports on the sleeve), and deburr them with a diamond jewelry file. Then wash the parts and reassemble with a bit of oil. That way the burrs don't have to be scraped off by the engine parts themselves during the break-in process. After the first tank of fuel, remove the heatsink and wipe the inside of the cylinder with a cotton swab to remove any bits of chrome that flaked off the edges of the ports but didn't get blown out the exhaust. Then reinstall the heatsink and resume break-in as normal.

This method has worked perfectly for me for most of the time I've been RCing. I haven't had to replace an engine due to wear-and-tear in years.
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Old 11-09-2022, 07:15 AM
  #18  
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So you can not win from the experienced guys on this forum so now you gonna tell the rookies the same crap?

Originally Posted by 1995 Monster T View Post
14-18% oil lube.
Most RTR fuels have 12 to 14% oil, more can give tuning issues so it is not advisable. But the question was about the nitro content.

Originally Posted by 1995 Monster T View Post
9% is race fuel and 16% is backyard bashing fuel. You will not be able to tune a engine the same with different% of oil lube. Less tunning with less % oil lube.
Huh? lean is still lean and can cause detonation. Agree that a basher does not need 9% but if he/she knows how to tune then 9% will work perfect.

Originally Posted by 1995 Monster T View Post
YEA??? Your tuning window is smaller and your engine has less protection from a lean run and your engines run hotter. Oil lube dissipates heat and cools the engine.
Too much oil will give resistance and resistance will be transferred to heat as well. More oil will give a different tuning but no wider or smaller window.

Originally Posted by 1995 Monster T View Post
]
NitroRC.com | Fuel Mixture Workshop
This is where I got my info from not out of the air like you. LO

Your engine is running toooo hot. Normal should be around 200 Degrees or less for .12-18 size engines. Mine run at 175-200 degrees. .21 at 225 degrees. All those years of running didn't add up to much!!!!!!!! It's the gallons that tell the story. 2 cases a summer for me. I guess you run quarts!!!!!!!! So stop giving bad advice!!!!!!!
Engine temps are not always as you say. First of all there are huge differences between IT temp meters but also their correction on plain aluminum or anodized aluminum can be far off. But to give you an example, my .21 engines run 150 degrees C (!!!) and I have a stock Kyosho .18 engine running 170 degrees C (!!!)

I think @mrreet2001 needs more popcorn....
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Old 11-10-2022, 08:45 AM
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He's not smart enough to argue with so I gave up. 175 degrees Fahrenheit isn't even hot enough to tune properly.
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Old 11-10-2022, 09:18 AM
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Originally Posted by Bud View Post
He's not smart enough to argue with so I gave up. 175 degrees Fahrenheit isn't even hot enough to tune properly.
Yes It is for a smaller engine! Location location location.
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Old 11-10-2022, 11:10 AM
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Please explain to me the location where 175 degrees is hot enough to tune a 12 nitro motor.
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Old 11-10-2022, 11:25 AM
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Originally Posted by Bud View Post
Please explain to me the location where 175 degrees is hot enough to tune a 12 nitro motor.
Well the temperature wasn't on nitrorc.com so he just made it up. lol
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Old 11-10-2022, 12:10 PM
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Originally Posted by mrreet2001 View Post
Well the temperature wasn't on nitrorc.com so he just made it up. lol
I don't make things up like you. I posted my actual results for my engines! I have well over 60 + running nitro engines!
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Old 11-10-2022, 12:13 PM
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Originally Posted by Bud View Post
Please explain to me the location where 175 degrees is hot enough to tune a 12 nitro motor.
again
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Old 11-10-2022, 12:15 PM
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Originally Posted by 1995 Monster T View Post
I don't make things up like you. I posted my actual results for my engines! I have well over 60 + running nitro engines!
What exactly did I make up?
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Old 11-10-2022, 01:00 PM
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Originally Posted by 1995 Monster T View Post
I don't make things up like you. I posted my actual results for my engines! I have well over 60 + running nitro engines!
Oh wow, can I touch you?
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Old 11-13-2022, 02:40 PM
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Originally Posted by Roelof View Post
Oh wow, can I touch you?
lol
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Old 11-23-2022, 08:42 AM
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im also watching
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