Mr Andrew Darby sent us this picture of his Pup. He says - " the pup has a 4" Peck prop, 3/4" Peck wheels and 1/8" rubber. The only additions I made were a couple of 1/16" square strips and the rear side, lower positions of bulkheads 2 and 4 to give them a bit more crosswise strength.
The Heron is still on the board but I've done the wings and started the fuselage, the parts are excellent and fit together incredibly well.
It's been over 20 years since I've built a rubber powered model aeroplane, and these kits which finished production some time before I was even born, have really re-kindled my enthusiasm for the whole hobby.
Thanks for your photo Andrew and your kind words. Looking forward to the Heron pictures