Questions reg. Bristol Hercules VI, X, XVI engines

[ChrisMAg2]

Question for our engine experts:
I am discussing the type of a crashed britsch bomber on two german forums.
We have come to the point that we would need experts on Bristol (Hercules Vi, X, XVI) radial engines. We urgentely need to know:
-What are the differnces on the different versions?
-Is the propeller hub a mean to distinguish them?
-How do the differnt hubs look like?
-What kind of propeller was used (wood or metal blades)?
-In what kind of aircraft were the different engines used?

FYI: the crash this is all about has revealed four radial engines. One of our members has meant to see and identify a Rotol hub and I seem to see a remains of a wood propeller. This would mean the engine is a Mk VI? But we would need an expert to verify the sights.
The first identification said this was a Lancaster II. Then it was said the engine is a Bristol Hercules Mk VI with Rotol hub and wooden props. But in this combination it cannot be a Lancaster II because the reported crashes do not mention a LII with Mk VI engines. But if we dont have a LancasterII, what do we have then?
Unfortunaley we don't have much more then the engines. The date of crash seems to be for sure Jan. 14/15, 1944 in the area east of Brunswick (Braunschweig), Germany. The remaines are just a buntch of rubbel. We do not have a verification of found serial numbers (yet).

An important question is also: Are these remains Bristol Hercules Mk whatever at all?

You can see some of the pictures here:
http://www.luftarchiv.de/bullet-boar...r=asc&start=15