The Other Norton .

Not bad for a pack of armatures .

Hacksaw blades are cheap, too . There may be a degree of piracy in the automotive field .

And Commando Cranks are about a third of the weight there .




So all we need is a 21st century non unit transmission ,
There could be a few other details to attend to . Not that
theres anyone Id trust to do that .

Adios .

Did anyone see the bill from Kieth Duckworth .
And to think there were blown DFVs left right & center , back then .

Laughably simple when the DFVs a derivative of the BDA etc ,
Such are the delusions of grandure of the high & mighty .

And in case anyones wondering , This with the C'do cradle & iso's
relegates awkwardness and delicate componetry out of conflict .

With one or two things a bit wider , and no lack of substance .



Nottalota differance REALLY . But you put the curvey bit though'n make it anotherbit back'n up were the shocks miight NORMALLY end up .Being the top . But not that other long undersize bit of the littlle bits
cept'n wereis theyre justin tension .They even put the shocks elsewhere in some cases . But all those leaning into the wind visuals are sortta Commando signatures . As long as it dosnt look FAT .or UGLY

There were in fact much componentry of minimalist Man Hours of production . Giveing the lean clean essentials look so in conflict with the mordern bitty tacked on appearance reminisent of old jap garbage .

Them front frame toob is at the wrong angle , look at it like this
with the cylinders ( 2 ) canted Fwd. Like wots a T 160 ish .

Butanoverlay of the intestate without the crunchy bits .


Might have to do something about the footrests ,

Saw a couple of olde fartes on something lik this. Ea. , Thought if you threw away all the plastic theyve strewn on it ,
and fitted enduro bars & a nice Mega on the 4-1 , Dave Rice might even look at it .

the less scientificly challenged might realise theres similarities in the shapes and angle of the members there ,

Same flavour'n look ow the pipes tucked in for leanangle . Just gotta finda picture offa Dirt Track one .





The Only TRICKEY BIT , would be getting it under 360 Lb , but Im sure we can manadge 320 .
This being the space age 'n all . And is there anything worse the plasic japanese TZs and stuff.
We can already see we can save a lot of weight and a lot of money if we leave the brakes off like that, and it'll get in lighter . If it aint there it wont slow it down none .

( they can only see the cylinderon theend there , anyway . Throw inabit of P-11 and the worlds your Oyster . )

I was riding the Rob North T150 750 for Carl Rosner and Ray Knight was riding the proddy bike pictured, when Ray retired I ended up riding the production bike as well.
It was one of the Boyer of Bromley bikes originally.

Thanks , 74ok . Will put the here while theyre there .

You can see its horizontally split cases ( crank centerline ) and seperate barrel .The thing under the pipes has to be the Oil Pump .


Whereas the BRITTEN is MONOBLOCK ( Almost )



Of course , we can knok one of these up from a few scraps of aluminium in a jiffy .




Thisisa 70's HART / H K S Ford ( For BDA ) engine block .

But the general theory is you run the skirts down and Mains Ribs across , so as the bottom end dosnt walk , or need a GIRDLE to stop main bearing support deflection .
SEEING as if we're doing this its gotta be done right . Rather than half cocked. As usual . in the U.K. .

I really liked the comments in a aero mag. that theyed do a better job in england of a de H Mosquito , than the Kiwi's have . RIGHT , Sure Mate . & at ten times the price .

Thisis howthe Nasty DFV / etc copy works .


Will put a sketch of a True Modern Non Unitary Powerplant Configuration on . As weve not heard back from certain fore ign parties .
We'd be putting the ribbing INSIDE . Though a bit of STYLE wouldnt go out of hand . Clicked Gold Anodised might be lighter than Bronze . For fittings .

IF I RULED THE WORLD . . .



OOPS .

Dimensionally , and in some ' other ways ' The Bitten & THIS ( M 102 Below ) are hand in hand . So WE Could Have Had our @ Modern Vincent @ if the N Z Govt. wasnt 12 year old enfeebled brats .

Yam Trans & Clutch . Do the Castings , & most of the rest is ' off the shelf ' , care of the existing automotive componentry manufacturers .
Not that its exactly Henrys every Farmer Needs a TRACTOR , or Sochio's the World on a Hona 50 .

We could however solve the traffic congestion . As in PUNCH's , ' If Everyone Goes Twice as Fast , There'll be Twice as Much ROOM ON THE ROADS , as They'll Only Be There Half as Long . '

OBVIOUSLY We Chop TWO OFF . and use Alfa twin spark belt drive . Tho the P86s ' Triumph @ cam gear wheels could get closer valve timing, perhaps . These bits in the Britten Cases .
OR A PARRALEL ( CYLINDER ) TWIN . Whicjh is More Compact , Ridid , Lighter , Stronger . And Cool .

And could been going on in 75 if they'd lengthed the stroke 50% on the P 86 , The 90 bore woulda been a 1250 c.c. Compact Device .
and why the bottom end'd need to be tied together fairly well . As the Top End in Race Spec. will hold 11.000 tho 10.500s a bit more sensable .
ROAD around 8000 / 8500 if were to avoid warrenty issues .

1985 Mercedes M102 E23 Engine - 190E 2.3 16 Cosworth​

The BRITTEN has a bit in common , here . 1/2 x 2.3 = 1150 , ditto 2.5 is 1250 .

After all , it can all be recycled . If one or two things decide to let go . General Theory is its all been done before . Componentally .
Just has to be STRONG ENOUGH to run 80 % NITRO .

Just Like a 50s TRIUMPH .

OH WHAT MIGHTVE BEEN . IN A TWIN . -> Talk about missing the boat .


The pity is people had cut Lotus Twin Cam & Later B D A' s in half to run in the 750 car clubs races , They went better than Reliant Robin engines .

DUCATI eat your heart out .



Basic . Strong . Servicable . If Nortons Incapable Royal Oilfield might just manadge
Were Vacum Casting tecnologies concieved in the D F V era .
Comonplace now & essential for uniform density / strength to weight .





But STRENGTH is PARAMOUNT for DURABILITY .

Again . Prety much all OFF THE SHELF componentry . So S.F.A. Budget or issues .
unless POLITICS are involved .

Funnilly enough P 86 is two bearing crank & good for 10.500 r.p.m. .
I think Duckworth realised not he could have made it simple . Underated Isolastic set ups benifits .
Nowadays Electro Hydraulicly tunable & better Triangulaton Geometry . Trignometry . The Intergalactic ! Navigator !! .

If you'd designed THIS in your loft , and embroiled in torsional metalurgical harmonics , it might explain why the twin reflected that . Whereas if theyed stepped back & perused evolution , they could hve cut in
all square and ship shape .

75 I.o.M.

a big kwacker came out with a fairing like this . TWENTY YEARS LATER ! .
Min Frontal Area & Min Height with full frontal pilot cover from head on .
ONLY TWO WOULD DO . Cylinders . Thanks .

And While we're at it , as others are in the habit of leaving cyliders off by degrees rotationally , 120 - 240 , or 100 - 260 , couldnt be all bad . All being based on B.M.E.P. s and rotational accelertion graphs . Thanks
Then theres flywheel inirtia in the clutch , belt or chain driven . Dry Sump of course . These Days V V T & Progressive Dual chokes / venturies per Cyl . So only one intake valves fed below half throttle .
for emmisions & docility . & a exhaust cut of for if your thinking youre seeing flashing lights , with full emergency power ' COMBAT ' facility .

AND NOT ONLY THAT ! , unitary construction tends to transfer , transmit , and to a degree act as a echo chamber with the v i b r a t i o n s Whereas damping ( with three bearing sturdy case ) and Isolastisising
them at the source ( Primarilly the front of the powertrain assembly ) with the electro whodad there , can get turbine smoothness while minimaliseing frictional efficencey and load osscillational dead losses,
seperate rotational masses accelerations drive transmissions particularly . Thus keep it simple & go for the jugular , er , dont multiply and complicate dynamic irregularities . absorb irregularities at source .

A decade Previous ! .

Nice ! Can't ignore the drainpipe now ..aah, missed it, already covered or showed up.

? ! ? .

Matt Spencer said:

? ! ? .

Click to expand...

there's a pix in the second post

Only the commando frame used isolastics?

Parently one ( or two ) of the hardley ablesons had a version notsolong ago . Think the swing arm wernt included , so not the whole ' power train ' as per the Commando .

Wonder periodically how developed / evolved ISO's were .

Death Valley HEAT , and Siberian ( or Swedeish ) winters would presumeably vary the viscosity of the rubber ! .
The C'do 50 % balance factor gets equal stress / load through donut periphery ? .

Would a vertical hydraulic shock absorber , Elec. Adj. like some moden shocks , kill the Idle Dance front end endearing characteristic ? .
Surely theres much development potential in the system . As it appears not to have evolved past ' first generation ' application .


They might not have got that quite right ! , it'd bounce at the front . AD AGENCIES ! .

Kiwi Hillbilly version with third Iso under the clutch / mainshat - more or less . Absolutely redistributes load plane co-ordinates . More linear and low .
Akin to ' anti dive ' Auto suspension geometry . Maybe . Definately powertrain ' roll ' force reconfigured to ' down low ' ,
Where the small dia. frame tubes then being better utilised . I would think .

Matt Spencer said:

Parently one ( or two ) of the hardley ablesons had a version notsolong ago . Think the swing arm wernt included , so not the whole ' power train ' as per the Commando .

Click to expand...

Know about that, meant all the brit frames other than commando?

Mightve been yamaha engined commandos for the coppers , with ISO's ?
think NO other PRODUCTION / Volume prodced isolastisied motorcycles .



Prototype .

Can't find the 1 & only commando jackal (think) with the 3rd piston counterbalance

Matt Spencer said:

Click to expand...

" MODERN RACE BIKES are shiny, perfect things: they have the air of being extruded from 3D printers in a hermetically sealed laboratory. "

And I thought they were done by computor geeks with more money than brains .
AND Id like to see THEM pass Thirty Five HUNDERED Vehicles .



PITY . Theyll Never get the opportunity to be REALLY COOL > !

Sorry .