Originally Posted by
cmulder
Am using 20% castor in my glow fuel would 20% castor also work wit petrol?
Standard compression of a cox is fairly high so a bigger space above the piston might not be such a huge disadvantage, assuming petrol needs a lower compression. 30 min flying time on that wing would be greath
Any engine that can run 30% nitro without detonation problems, eg cox engines, are suitable for CDI/Gas conversion imo. Most cox engines have a CR of less than 8:1, some as high as 9:1.
Yes, castor oil can be mixed with gas. Back in the day that's primarily what 2 stroke oil was.