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blending fuels/nitro?

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Old 01-06-2010, 10:54 PM
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jayseas
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Default blending fuels/nitro?

Need some answers, if i take one quart of fuel A, which is 25% nitro and all castor , and add in 10 oz of fuel B which is 15% nitro and a 20% castor synthetic blend.

? Is, after mixing these two fuel with numbers given, what will be the nitro content of the blend?
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Old 01-07-2010, 04:09 AM
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Default RE: blending fuels/nitro?

Jayseas,

How many oz in a US Quart? - Imperial quarts are 20oz.
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Old 01-07-2010, 07:11 AM
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Default RE: blending fuels/nitro?

A US quart is 32 oz.  So the math goes like this, 32 oz (w/ 8 oz nitro) + 10 oz (w/ 1.5 oz nitro) = 42 oz (w/ 9.5 oz nitro), or 22.6% nitro.  (That's 9.5 divided by 42 times 100).

The castor/synthetic numbers are irrelivant to the discussion of nitro content.

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Old 01-08-2010, 06:06 AM
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Default RE: blending fuels/nitro?

Thanks Philip,

You took the words outta my mouth, all I needed was the US quart size.
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Old 01-08-2010, 11:40 PM
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Default RE: blending fuels/nitro?

[link=http://web2.murraystate.edu/andy.batts/ps/fuel.htm]Here is[/link] a fuel mixture calculator I wrote in Excel to mix two fuels with different nitro and oil levels and add extra castor if desired. It also allows you to specify the synthetic/castor blend. The calculator is designed to yield one quart of fuel.

I fly 1/2A and don't mix more than a quart at a time - I just got tired of doing the calculations by hand.

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Old 01-09-2010, 07:20 PM
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Default RE: blending fuels/nitro?

Thank you, fill kinda dumb now if i would have just put more thought into the matter.
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Old 01-09-2010, 07:21 PM
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Default RE: blending fuels/nitro?

Thanks Andrew for the info. Helpfull.
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