RE: What was your first engine?
Well I wanted a Davies Charlton Bambi { A really tiny diesel which would have been difficult for a 10 year old to start. }
The model shop persuaded my dad that it was a bad idea so I got a Frog 1.49 Vibromatic instead.
It was an easy starter once I mastered the compresion screw and it flew control liners and the odd free flighters for years.
Ahhhhh the smell of ether and amyl nitrate in the morning.