Oil Fuel Ratio
I am running 30 percent nitro and 11 percent oil, I want to increase my oil percentage 2 percent, total of 13 percent. How much oil (ounces) do I have to add to one gallon of fuel? I am not sure but I come up with 2.5 oz, is this correct?Are there any fuel specialist out there?
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Using a prog called "Glowcalc" (glow fuel volume ratios):
Methanol 59% = 0,59 US gallon = 75,52 US fluid Oz Nitro 30% = 0,30 US gallon = 38,40 US fluid Oz Oil 11% = 0,11 US gallon = 14,08 US fluid Oz Total 100% Methanol 59% = 0,59 US gallon = 75,52 US fluid Oz Nitro 30% = 0,30 US gallon = 38,40 US fluid Oz Oil 13% = 0,13 US gallon = 16,64 US fluid Oz Total 102% Difference = 2,56 So you were correct :nod: |
Originally Posted by Ambros303
(Post 10042317)
Using a prog called "Glowcalc" (glow fuel volume ratios):
Methanol 59% = 0,59 US gallon = 75,52 US fluid Oz Nitro 30% = 0,30 US gallon = 38,40 US fluid Oz Oil 11% = 0,11 US gallon = 14,08 US fluid Oz Total 100% Methanol 59% = 0,59 US gallon = 75,52 US fluid Oz Nitro 30% = 0,30 US gallon = 38,40 US fluid Oz Oil 13% = 0,13 US gallon = 16,64 US fluid Oz Total 102% Difference = 2,56 So you were correct :nod: |
Ahhhh so much easier with metric ;)
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You can't have a bottle with 102% fuel in it! :D
If you only add some oil, the methanol and nitro percent will drop. 1 gallon = 3,79 liter (l). 59% methanol = 3,79 * 0,59 = 2,2361 l. 30% nitro = 3,79 * 0,30 = 1,137 l. 11% oil = 3,79 * 0,11 = 0,4169 l. Raise the total volume with 2,3%: 3,79 * 1,023 = 3,87717 13% of that volume is: 3,87717 * 0,13 = 0,50403 Oil you'll have to add: 0,50403 - 0,4169 = 0,08713 liter oil = 2,9462158 US fluid ounces New percents: Methanol = (2,2361 * 100) / 3,87717 = 57,67% Nitro = (1,137 * 100) / 3,87717 = 29,33% Oil = (0,50403 * 100) / 3,87717 = 13,00% What oil will you add? I bought 12 gallons of 16% fuel last year for close to nothing. To transform it to 25% nitro and still have the same oil percent, I'll have to add both nitro and oil. Cheers :nod: |
on +/- 4 liter of fuel adding 2% oil it is just 40cc, you can calculate a lot but adding such an amount of oil will come close to 2% more oil....
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Originally Posted by Lille-bror
(Post 10044754)
You can't have a bottle with 102% fuel in it! :D
If you only add some oil, the methanol and nitro percent will drop. 1 gallon = 3,79 liter (l). 59% methanol = 3,79 * 0,59 = 2,2361 l. 30% nitro = 3,79 * 0,30 = 1,137 l. 11% oil = 3,79 * 0,11 = 0,4169 l. Raise the total volume with 2,3%: 3,79 * 1,023 = 3,87717 13% of that volume is: 3,87717 * 0,13 = 0,50403 Oil you'll have to add: 0,50403 - 0,4169 = 0,08713 liter oil = 2,9462158 US fluid ounces New percents: Methanol = (2,2361 * 100) / 3,87717 = 57,67% Nitro = (1,137 * 100) / 3,87717 = 29,33% Oil = (0,50403 * 100) / 3,87717 = 13,00% What oil will you add? I bought 12 gallons of 16% fuel last year for close to nothing. To transform it to 25% nitro and still have the same oil percent, I'll have to add both nitro and oil. Cheers :nod: |
Originally Posted by ramjesr
(Post 10042258)
I am running 30 percent nitro and 11 percent oil, I want to increase my oil percentage 2 percent, total of 13 percent. How much oil (ounces) do I have to add to one gallon of fuel? I am not sure but I come up with 2.5 oz, is this correct?Are there any fuel specialist out there?
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i heard the old rule of thumb is anything over 10% is a waste. and i would think it would gum the motor up and create way more heat
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Ok you guys are right. I ran it the other day and did not have to tune the motor, it ran pretty good but it did run 15*hotter so about 245-250 degrees. I just wanted to ad (blendzall) to my fuel. I guess I will run 30%nitro w/9%oil and add 2.5 oz.of castor oil(blendzall) That would make it 11% oil. I am just experimenting with the oil. By the way I am running the OS .21XZB engine.
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could be wrong but a well know engine guru told me anything over 8% is overkill
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I wonder what Rolo Tomassi has to say about the % of oil?
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you'll need less oil if you run 30% nitro compared to e.g. 25% nitro. That's a fact :)
Why buy 30/9% fuel and add extra oil, when you just can buy 130/1% fuel?? |
Originally Posted by Lille-bror
(Post 10048344)
you'll need less oil if you run 30% nitro compared to e.g. 25% nitro. That's a fact :)
Why buy 30/9% fuel and add extra oil, when you just can buy 130/1% fuel?? |
Yep
Originally Posted by ramjesr
(Post 10048408)
I am just experimenting with oil. Byrons fuels are available in 30% nitro 11% oil. That is what I run, I did notice the engine ran better at 13% oil but 15degrees hotter.
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