Old Sidecar outfit: can anyone identify?

I took this snapshot in 1963 at a hill-climb. Can anyone identify the
outfit or even the engine? Only a b/w snap but the resolution can
take some enlargement. Please post here if you recognize anything.

http://www.oldstox.com/images/Mystery bike 1.jpg

 

Using the patented Mavis Beacon "Hunt&Peck" Technique,

X-posted to classics where someone in a brown dust-coat may be able to
help.

If they can see through the wee-fumes, that is...

 

Looks like it might be something like a Norton Commando engine in there.

 

Aye, I remember those... its a Trumpleton Thrubstock 500 Sidevalve in a hand
made Turkleton-Finchingay Tubular Chassis.

 

Is that the famous overhead sidevalve engine?

 

In 1963? YTC.

 

Using the patented Mavis Beacon "Hunt&Peck" Technique, The Older

Point of order. The heads would have been the same. Back to 1817,
AFAICS.

 

Well, maybe not a Commando, but some sort of Norton. Possibly an Atlas.

 

<needlessly serious comment>
Not that unique, in fact.
</nsc>

 

Tsssch... it had a redundant ohv setup in case the sidevalves failed, a
simple pitstop mid race to change configuration was all that was needed.

 

+++ Well, that was a prompt volley of helpful replies! I was thinking
of something older, given the general appreance of the outfit, but now
you say Norton, yes, that cylinder head looks the part.

If all the postings in this ng are as much fun I shall be back, but
I'l leave you with another snapshot I took in about 1965, which does
not need any intro, but always makes me thank the lord for the built-
in genetic looniness of the Two-Wheeled Nation:

http://www.oldstox.com/images/potterJan.jpg

("Turkleton-Finchigay", indeed!)

 

If you squint it looks like a Spagthorpe Recliner.

 

Looks like the engine maybe came from a Fnord V8 Pilot.

 

--- from a Fevy Forvette, actually. But the fuel injectors are home-
extruded Heinz 57 bean tins, lapped-in with fine Rutland Ore. Okay,
I'm not as good as the other comedians here, but yes it is a Chev.

 

Looks like a Norton Dominator engine.

 

It does, a bit.

 

Look at the oil feed pipes and shape of the inspection covers on the
valve gear casing. I'm sure it is a Norton as the Commando had the same
stuff. I think the Atlas preceded the Commando (my dad ran a Dommie
before I was born in '59) and the date sounds right for an Atlas. Was it
Dunstall that produced some kind of race kit for these?

Steve

 

talking of which, I was doing a password reset on something or other
the other day, and had to complete a Captcha - it read "fNoRD", which
gave me a bit of a turn.

 

The Goddess has got her eye on you.
RUN.

 

I think I'll go with my "act like nothing's wrong" gambit.