Test Day x 3

1975 control line guy Tue Oct 08, 2024 9:34 pm

All passed although the old Thimble Drome had to be flicked clockwise to get it to run counter clockwise. Small Cox Logo

roddie Wed Oct 09, 2024 7:29 am

One of my favorite activities!! Small Cox Logo

What was your fuel formula? (% nitro/oil etc)

1975 control line guy Wed Oct 09, 2024 8:03 am

The fuel mix I used for these engines is 100 ml VP Pro Car 30%/9% oil + 10 ml of pure caster oil, readily available in the USA. I also flush the fuel lines and tanks with denatured alcohol and apply after run oil.

roddie Wed Oct 09, 2024 8:23 am

1975 control line guy wrote:The fuel mix I used for these engines is 100 ml VP Pro Car 30%/9% oil + 10 ml of pure caster oil, readily available in the USA. I also flush the fuel lines and tanks with denatured alcohol and apply after run oil.

Thanks for the reply. I sourced a quart of castor when I placed my last fuel order with Sig. The order was for X2 quarts of Champion "25" and X2 quarts of Champion "35" (plus the quart of castor..) I'd always used Sig fuel in my Cox engines.. but bought the castor on this last order.. for adding to some VP 10/22 for some old "steel-fin" engines.. just to up the oil content a smidge..

Definitely good that you do the after-run flush/oil. Thumbs Up