Mostly PAW 2.5, .19 and .35 in appropriately sized CL Stunt models Old Time and modern ...

Several in Sterling Ringmasters, a .35 in a stretched SIG Banshee, miscellaneous other CL uses, like a Frank Ehling EASY OT model. Silver Swallow 2.5 in an M&P Ercoupe profile (intended for .35 glow engines!) is almost too much grunt...

First diesel model was a first edition CG Shoestring profile with a David Andersen 2.5 back about 1956-57. 10-6 prop, about 60', .018 lines off a black U-Reely, what did a kid know? Flew solidly and quite well! Wingovers took a while, but hung out there all the way across the top. An OS Max 15D was too much for a Junior Flite Streak, back about the same time. Decade or so later, an ENYA 15DII was great, except that the comp screw tended to back off setting - since fixed with a tommy bar; got to put that one in something, again!

Fuel has been a matter of interest for about 50 years, then... Started with OK Cub diesel when available from LHS. Learned the formula early enough, and started mixing my own at about age 16 or so. How times change... Ether, then as now, was the tricky part of the game. In lower Manhattan a warehouse district included several chemical suppliers. So, this high school kid with the DA hairdo wanders into one, asks:

" Do you sell ether?

"Sure, you want a tanker car full?

"Nah, too much...

"A 50 gal drum?

"Nah, a bit much...

"5 gal?

"Nah, hey, what's the least you got I that I can pick up for some testing?

"1 gallon.

"How much?

"3$.

"Deal!"

Carried the can home on the subway, with the "Highly Flammable" label and 'skull and crossbones' poison label prominently visible...

(We hadn't discovered those recreational substances kids of that age, today, make, using ether and other stuff...)

(If we had, I guess I'd have had a more exciting adventure getting it home, or perhaps not getting it home, but meeting many, many uniformed adults, and discussing law, chemistry, hopes and plans...)

Those technical ether blends ran very well, btw, with none of the vapor and tank nonsense I've hit just recently...

There are several more stories about flying diesels in Brooklyn, NY, 50 years ago. Fond memories...