Howard,
The treatment of the lower extremities of the front down tubes is novel to me, I have not seen that on any other DT Douglas. I do not think it is a case of 'early' DT, as they where using all lug and braze joints in that vicinity on the preceding RA, OB, OC, and TT. It does look professionally done. While it could have been done post-Works, one would have to ask for what gain? I suspect instead it is an experiment by the Works, which could have carried it out with slightly less trouble during original manufacturing, then banished it to Australia when nothing came of it.
It looks as if the engine bearers bent slightly upwards at the front ends (or is it an optical illusion?) I have seen other DTs with jogged engine bearers, both Works and owner modified. Usually the jog is far more significant.
Also of interest is the flattened tube on the upright to provide extra clearance for the rear cylinder exhaust rocker arm.
Howard you do turn up some odd frames!
-Doug
