The Approachable Nortons

I was more into playing rugby back then than bikes, so finger off the pulse, so to speak.
 
" Yeah, 1988 was a while back "

Try 1912 then . d.o.h.c. 4-valve per pot . so The 110th Birthday soon . of the MODERN D.O.H.C. 4 Valve .:cool:

The Approachable Nortons


Better looking than a lot of ' modern ' ones though .

The Approachable Nortons


=====================================================================================================================

Typical modern o h c single layouy .

The Approachable Nortons

These had 3 valve in 1950 odd - 2 Ex to get larger circumferance for heat disapation . Titanium Rods in 1964 .
Jack Williams ' works ' engines . Young Peter ( williams was a chip of the old block .


The more elegant 1938 version .

The Approachable Nortons
 
Last edited:
The chain is a lot less expensive than Bevel gear o h c drive tower .

The Approachable Nortons


Not a lot of supurflous componentry , oherwise .

The Approachable Nortons


which is why ducati went to belt drive .
 
The Foist Belt ? 1966 Pontiac o.h.c. six .

The Approachable Nortons


Withits eyedraulic lifters .

The Approachable Nortons


Whichiswhy ifyou cutta BDA inarf youve gotta mota as modernasa Dew Kati . ifyoudoitright .

Whichis reduceing to Min parts Count . also reducing re jiging to machine . Min Mch. Axis .
for poiposes of economicses . Soifyouuse the arfof oneof these , pretty much . Its affordable ( pun ) and FAST .

The Approachable Nortons


Fora twentyfoist Centry COMMANDO . ( tho 75'd ve binbeta ) .

https://historicmotorsportcentral.com/2014/04/16/the-cosworth-bd-engine/

without allthe complexities of the DFV gear drive harmonics .

The Approachable Nortons


The Approachable Nortons


Tho Thats a pre war dusenberg 24 cylinder , actually . and a bit big for in a motorcycle .


So DONT GIVE ME " Modern " ! :eek:

The Approachable Nortons



1960 - 2000 , superceded by nazi merc. in new fangled cheap lighter overweight unitary range rover .
with PLASTIC valve covers . unneccesarrilly .

So wot these modern things are is mostly old things , with bits pruned off a bit . And a bit flasher .

The Approachable Nortons


Competition Proven . Like wot a Commando is was . So we dont need the fancey frills . We need it out there. unbreakable . NOW .
So they can see if they can break it .
 
Last edited:
Back
Top