BMW 2800 by artist unknown
The cutaway drawing and its artists
Posted 06 December 2018 - 10:19
Posted 06 December 2018 - 10:28
Posted 11 December 2018 - 16:31
Found couple of nice scans on Flickr which has better quality than the images previously posted here - so, gentlemen, please check your collections and replace if neccessary:
1955 Velocette Venom 500cc engine cutaway by Lawrence Watts... or it also could be 1955 Velocette Viper 350cc engine by John Crawley (at least I had exactly the same cutaway with different names) - so if anyone know some reliable method to clear this issue it will be greatly appreciated and here is the cleaned version
P.S. When cleaning I decided to remove that black copyright rectangle (as you can see it was blackened this way on the source scan - so it was kind of meaningless to have it on the cleaned version). Missing fragment of crankcase was restored using smaller versions of this cutaway posted here earlier
Edited by Ventro, 11 December 2018 - 16:39.
Posted 11 December 2018 - 17:15
Next one was this AJS/Matchless twin engine cutaway by J. Bennett - this engine was build many years in 500, 650 and even 750cc versions and thus had a lot of names - so it difficult to identify the exact model depicted. Temporarily I saved it in my collection as 1957 Matchless G11 650cc engine (if I am wrong, please correct me) Cleaned version I also have a nice blueprint of this engine... ...which beautifully shows some of the very interesting technical features - first one is this intermediate bearing support plate with main journal cap (see red parts) - very elegant solution which still allows vertically-split crankcase without overstressing crankshaft. I'd say this is kind of hybrid between conventional main journal caps and even more exotic tunnel monoblock crankcase - like this relatively modern VM Diesel (some time ago Ibsen posted cutaway of this engine as Alfa Romeo 2,0L Diesel) Second unusual feature is a camshaft layout - as you can see at the blueprint, this engine has mirrored OHV layout (in common terms I guess we can call it DOHV - double overhead valve). "Extreme exotic!" I thought - I mean the only similar automotive engine I could remember was this stillborn 2001 GM XV8 concept engine... ...but then I found this 2013 Indian Thunder Stroke 111 engine with three cams (!) - you may also remember 1927 Fiat 806 GP engine ...What can I say... Motorcycle engines are truly amazing
Posted 11 December 2018 - 20:11
Sorry I can't help providing missing info, or better scans.
What I am surprised about is J Bennett's signature.
The cutaway artist we know as 'Bill Bennett' is John Arthur Bennett
Could he have done Motorcycle cutaways under another signature ?
I've added in a 'Car' cutaway signature to the drawing to compare
Posted 12 December 2018 - 00:30
What I am surprised about is J Bennett's signature. The cutaway artist we know as 'Bill Bennett' is John Arthur Bennett. Could he have done Motorcycle cutaways under another signature ?
It is also possible that J Bennett signature was added later by some editor or something. At least I have already seen a lot of unsigned motorcycle cutaways... and if so, that person could be not aware about "correct" signature of Bennett... well, this is only my guess
Posted 12 December 2018 - 20:06
1928 Norton ES2 500cc engine by S.E. Porter cleaned version Another long-lasting engine which was manufactured from 1928 up to 1964 - so it anyone will recognize the article where this cutaway was published maybe we will be able to identify the exact model year
Posted Today, 01:17