I'm not sure who designed the Dingo, but you might find out on the Vic-Stunt website. It may or may not be a Horrock design. It kinda resembles the Skylark with a bit of Chizzler thrown in for
effect. In those days, probably a .35 of some sort. Maybe Merco, since Brian lived in England for awhile. I gotta wonder how he got that Larakin Mk.III out to the flying field, considering the size of English cars. The Mk.I only has a 54" span, with 700", or so says the info on Dixon's website. He used Glow Chief .49's in the Larakins (which is an Ozzie term meaning "Agreeable/Likeable Fellow"). It's such a pretty engine, here's a pic. It shows some K&B Greenhead heritage, but was made in Oz by Gordon Burford. This pristine example is owned by Peter Lloyd of Victoria, Oz.
Steve
PS: Regarding Allen B.'s .60 Classic models, I bet one is Dutch, with many fins!
I'm curious...