ORIGINAL: dubd
Ravill also flies his UB with crow.
Yup, I do!
I use just about 1/4 inch. I love crow. The only jet I don't use it is my BVM F-86 that has an old school P-60 in it. I stalled that thing 3 times on the maiden...

But I now relearned how to fly an underpowered Jet! So I don't do that anymore!
Raf