ORIGINAL: Diesel Die-hard
I used a D7 for some years as my main combat 15. A really great engine - started well and ran like Jack the Bear by the standards of the day. Also stayed together, although it needed a new rod once in a while. More recently, the engine got banned under our area vintage diesel combat rules (it would simply bury any PAW or Oliver), but I still have an example in an own-design wing which I fly once in a while just to fly for fun. It still goes as well as ever and runs great!
Hi D-D, Decades ago when Bare and I were flying 80 mph Combat, we were campaigning
.15 diesel powered models. We both had MVVS 2.5 diesels and we were getting 81-83mph
on 60' X .015" lines, using our fuel mix and 8 X 6" props. This was without towing a streamer.
That of course posed a problem; so Bare built larger area models and I switched to a reworked
ST RV .15 diesel that pulled my same model 79 mph, sans streamer.
Tony