Fuel Mix Calculator Spreadsheet

[Colin McRae]

I came across this glow fuel mixture calculator spreadsheet that I thought I would share.

A few notes on its use:

1. The calc is based on 32 oz of finished volume. (The results at the bottom are just simple ratios in case one wants to mix up 16 oz, or 128 oz (1-gallon))

2. Only need to input values in the blue shaded cells. (All other cells are calculated values)

3. If you are just adding castor to a single fuel, set the amount of Fuel B to zero.

4. Adjust the amount of fuel (Cell A5) up or down until you arrive at the total oil amount you need (Cell C14)

5. The numbers in the spreadsheet are 'an example' where I wanted to take a Brodak 23% oil fuel (50/50 syn/castor) and increase the total oil to 28% for use on an OS Max S-30 engine. I removed approx 2 oz from the quart bottle and added back in 2 oz of castor.

6. Some of the other calculated results are interesting. For example, the mixture nitro content drops from the original 10% to 9.3%.

[Doug Moisuk]

What program is that in. Format?
I can’t open it?

[Steve Helmick]

While I didn't fuss around with it, it opened fine for me. It's an Excel program. I didn't know my confuser did that stuff, but my son built me a new setup a couple of years ago and made it fancier than I really needed it to be. I guess I'll have to save the file. Normally, I just do the Algebra...that's why it exists.  Steve

[Colin McRae]

What program is that in. Format?
I can’t open it?

Sorry, it is an Excel spreadsheet, however, the newer version of Excel (an .xlsx file)

Here it is again in the older version of Excel (an .xls file)

[944_Jim]

That looks like the Andy Batts calculator. It IS my favorite specifically because it does the magic against two known fuels and castor for a combined computed value. I do some re-arranging for 8 ounce blends for a day's.worth of flying/making noise (I fly 1/2A).