Commando in Context.

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Kind of brings the difference between steering/handling/roadholding to focus, when I got off a sweet intuitive handling Brit on to Kaw triple, it was a bit of a shock to have to get her by the scruff & force the beeatch into line, staying on on top, while she`s a wrigglin`'round like a... well never mind, you get the picture, but so long as you stayed rubber-side up & pointing in the right direction, they`re alright, I prefer that to the intransigent railroading feeling you get from those raked out looong wheelbase Ducatis of that era.
 
Aledgedly a full house Dunstall on the sidecar ( 17 T ) sprocket ( options available ) explains the mythical 12.2 . 12.7 is on the tall gearing .

12.7 is also about right for the early S & roadster on 19 teeth and the Avon G P rear Tyre . The more rounded profile gets more rubber on the deck , vertical .
Combined with a burn out in the trough , a sticky track , and ' letting in ' the clutch at 3.000 + for wheelspin rather than other things , a adept & merciless
rider could get these times . If it breaks , goin buya nother one . :shock:

Notta lotta New Commandos were run in particularly by particular riders . Anyone involved in engine tuneing coonsiders the ' working up ' process obligatory .
IF theyre paying for it . Before this day of disposable overnight consumer rationality . :shock:

Commandos have got the Cover Spot of about TEn Aus. / Brit mags in the last year or so here in australia . Damned annoying. Everyone will want one .
' Somebody ' couldve just put them back i prodution , like the royal Oilfields , Morgans , and other things . Brand New Tri 5 ( 55,56, 57 )Chevy Bodies Avaliable now, along with Model As , 32s and . . . Honda 50s ?? :shock:
 
Actually the 12.24 number is owned by ol` Norman 'chalky' White, factory development wallah, riding a workshop 'special' very well. & why would`nt he, its what any enthusiast would do if he had the run of the place..& have not a number of Commandos been 'new built from parts' by Andover Norton?[ or whatever the German owner calls it nowadays]..
http://www.normanwhite.co.uk/profile.htm
 
Rigle Ding Dingle .

Commando in Context.


http://www.nortonhogslayer.com/

Unlike these asian consumer goods , a artisan machine requires the services of a Zen Trained engineer / Fitter , and the skys the limit . :D
 
From Classic Bike Guide Sept`11, RE: Mick Grant at I.o.M. on a Trident.
"The Production limit was raised to 1000cc for the 1st time in 1974 & we were up against some big stuff, Z1, Jotas & 1000cc BMWs, not to mention Peter Williams on the Commando...
...He was better than me but I`d got more hp, so reckoned if I could stay with him to Ramsey, I could do him down the mountain...I pulled out 8 seconds on Peter by the Bungalow & reckoned if I topped up at the end of the 1st lap I could get through without stopping again. Back out, Pendelbury [Trident] was ahead with Peter 2nd & Dave Nixon [Trident] 3rd, I slipped into 4th, infront of Dahne & Buteneth on the BMWs. Peter`s Norton seized just before Ballacraine, then Pendelbury crashed at Kerrowmoar & Nixon crashed at Glen Helen - that saved me alot of hard work...
We learned later that Nixon had died from his injuries...Ifinished 1:53sec ahead of Buteneth...I was awarded the John Hartle Challenge Trophy for fastest lap too, at 22min28.2sec, for 100.74mph."
Was the factory Norton a 750 or 850?
 
What I like about the Commando..
Norton combined the the classic non-unit Brit mill with a sleek,cool, modern look - makes the pre-unit BSAs & Triumphs look old, & the unit models lumpen - it is light in weight, so gives excellent performance - better than any other contemporary series production twin, but smooth running too, with lots of [rewarding/maddening] 'involvement' for the rider/fettler/devotee.. yes, must have one...
 
THE EVOLUTION OF THE MOTORCYCLE

by Geoff Seddon

("The Evolution of the Motorcycle" is reproduced from Ozbike Thunder Down Under, an Australian lifestyle magazine.)

On the first day, God created the Heavens, the Earth, and the Wisemans Ferry Road. But He wasn't too happy, His Kingswood (automobile) would sway on the corners, crawl up the hills, and use heaps of juice.

On the second day, God took a new tack, and created the step through. He enjoyed the wind in His hair (He hadn't created helmets then), it was fun, and used bugger-all petrol, but it still crawled up the hills.

On the third day, God created the Honda Four, and it flew up the hills. With four into ones, it sounded better, it never broke down, but the corners remained a problem. Yet He had tasted power, and craved for more.

Thus, on the fourth day, He added two more cylinders to His Honda, and created adrenaline. His insurance premiums doubled, and it cost a fortune to get the tappets done. He also created fear (His hair turned white), and the cliché "enough is enough".

On the fifth day, God blew a couple of joints, had rap with Willie G., and created the Harley Davidson. He would cruise up and down the hills in top gear, and pick up heaps of babes. He would get off on the note. But the Hog was too heavy, broke down a lot and handled like the Kingswood.

Then, on the sixth day, He made the Bonneville. He would still pick up babes outside Wisemans Pub, and it sounded good. His bike was light, and for the first time, the corners were fun. It handled! God was stoked. But the vibration gave Him a pain in the arse, His kidneys were history, it was a touch gutless and He ran out of juice every 100 miles. He wasn't happy, but shit, He was close.

So finally, on the seventh day, God produced a motorcycle with the speed of a Honda, the torque of a Harley and the handling of a Triumph. He could afford the petrol, tune it Himself, pick up chicks and still blow off Ducatis through the corners. He called His bike Norton [Commando], and He was happy.
 
I picked up a brochure for a BMW r75/5 sold at Burnes in Sydney and they cost the same as a Kingswood in 1970.
They have nice big bench seats for.....y'know......
Commando in Context.
 
"For you know..."? What?
Transporting a Commando mill in unit with box/isos/swingarm? L.O.L.
What if it was a Premier with leather seats?
 
O/All gear ratio comparison. `72 Norton 750 Combat vs Kawasaki 750 H2 [As tested in Cycle, Dec `72].
Commando...........Mach IV.
1st, 12.40............12.62.
2nd, 8.25.............8.65.
3rd, 5.90..............6.52.
4th, 4.84..............5.40.
5th, ...................4.75.
 
& to pull that gearing... Combat [2S] 49.7 rwhp @ 6574 rpm & 43.9lb/ft @ 5536 rpm.
Versus.................... Mach IV 64.5 rwhp @ 6555 rpm & 52.3lb/ft @ 6037 rpm.
[From the same test].
 
Ok, so 'SS' is not 2S? Is that the only difference? 10:1 Comp pistons,& 32mm carbs are regular production items? Is the cam marked 2S verbatim? Or is it a line-up of S stampings?
 
J.A.W. said:
Ok, so 'SS' is not 2S? Is that the only difference? 10:1 Comp pistons,& 32mm carbs are regular production items?

Variations in production Commando compression ratios were achieved by differences in cylinder head machining (and various combinations of gasket thickness) and not from the use of different compression ratio pistons.

The cylinder head of the Superbike test Commando is unknown, however after Combat model production ceased, both "High" and "Low" compression ratio *32mm carb 750 variants became available, the low compression model with the RH5 head version giving 8.9:1 ratio, and the RH6, 9.3:1 high compression head with 0.020" removed from the gasket face (approximately half the amount removed from the Combat heads).


http://atlanticgreen.com/nhth.htm

*There were also a a few 1973 30mm carb 8.9:1 models.
 
Fascinating L.A.B., thanks.
Was the production situation an ad-hoc/ad-lib matter just tumbling off the line with whatever stock items were available - or did certain markets get specific combinations?
Or could an individual buyer order from an options list, to create a specification/combination of engine/bodywork?
 
J.A.W. said:
Was the production situation an ad-hoc/ad-lib matter just tumbling off the line with whatever stock items were available - or did certain markets get specific combinations?
Or could an individual buyer order from an options list, to create a specification/combination of engine/bodywork?

I don't know. I'm guessing the compression ratio was specified by the buyer. From what we've seen here I think most '73 Commandos had the RH6 head.

Cylinder head survey!

'73 (220000+) Commando owners: "RH5" or "RH6" head (the RH number was usually stamped on top of the head near the timing side exhaust valve adjuster cover)?
 
Whaderyer expect from kwakersiki types . :( STANDARD COMMANDO is " Dominator SS " GRIND .thats the Commando " S " Camshaft .
The frigging COMBAT Camshaft is STAMPED with TWO Ses , as in the stamping is " S S " sometimes confused with # S as its along the wotsit . :oops:

THE " S S " stamped Commando cam is the COMBAT , Dunno wot cam they puttinargh H2 . :p

This here Head Survey link doesnt . :( What would be the 73 750 head with the 1 5/8 intakes and 30.5 mm ports , While were here .Please .

PS , " my GS 1000 does 160 mph " , " downhill " , " on the speedo " . he seemed fairly exited at the time. I would be if my speedo was that fast .

FURTHER , these horrible 851 and other Ducatis have a bit more Hp than there rated speeds would suggest . The old Tourque x rpms bit being missleading .
The drated 60 Hp @ 6500 being twice what the 130 Hp @ 13000 ( as in a whizz bang ) the nasty Ducati's being n the 160 mph range , give or take .MUCH LIKE
the old dunger 72 Daytona Commando (said to be 155 mph ) Theres a thing. They may have better acceleration though . :( Then agian , theyre lighter . :lol:

They call it progresss .

Commando in Context.
 
Top speed, which came out at around 125mph, was also cruising speed."
Sound somewhat familiar, Commando riders?
Well, Minton is, in fact, describing the H2![/quote]

That's as maybe but how long could a H2 run at 125 before hitting rerserve?? A beautiful looking machine never the less, and the sound that it made was like nothing else.
 
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