nitro 10%+20?

[simon1]

hi everyone, got a question, just mixed 10 %(or 15% forgot) nitro with about the same of 20%, with the weather looking promising going to give the raptor 30 a go tmrw.
Wondering if mixing the two is ok? and if i need to alter needle to get the engine running smoothly. Forgave my ignorance still learnin

cheers
simon

[Dedcalm]

If the same age and brand then I suspect you would end up with a mix of 15% if original was 10% and 20%. I doubt you will notice the change in nitro content TBH.

I make it a rule to check the backplate temp after each flight so I know what is happening with the engine and whether or not I can move the mixture a click or two richer (hot) or leaner (cool) depending on temp. I am still slowely leaning my OS50 up after the summer heat and running it rich.

I have never mixed fuels though, have always just used up what I have before opening the next bottle... these days I only use Optifuel 20% anyway