For Dart positioning compared to the w/b required for a piston engine, best comparison is the old Convair 440, which were actually converted to Dart power as the Convair 600.
The plane of the props, and the extent to which the engine projects in front of the wing, seem to be much the same.
440 :
https://www.google.co.uk/search?q=co...RnsRSKyJzGg20M:
600 :
https://www.google.co.uk/search?q=co...=1518987705642
Last edited by WHBM; 19th Feb 2018 at 00:44.
Reason: changed 'prop plane' to 'plane of the props' as v confusing otherwise !