Rohan wrote:Jeandr wrote:I don't want to call anyone a liar, but 100Mph is really moving on public roads,
Have you been on an English Motorway ??
First time I was on one, I wondered if the speedo was showing 70 mph, the legal limit, or if the speedo was secretly in Km/hr by the speed things were overtaking me...
The genesis of this reputation wasn't merely the lack of suitable competition. The traditional Commando qualities were elevated to their highest pitch in the Submarine, and it was really those qualities that set it on the trail to victory. Because of the engine's vast reservoir of torque, the Commando pilot could dial his speed as though his twistgrip were a rheostat. Further, the standard Commando's fundamental agility was sharpened by the chassis tweaks of the Submarine until the bike was so stable and responsive that it could be ridden anywhere on the track, whether on a long straight or off-camber decreasing-radius turn. The generous (for the time) suspension travel gave the Production Racer a soft ride almost unknown among racers of the day, allowing the rider to concentrate on racing rather than just staying aboard. At long tracks notably the Isle of Man—the fatigue-reducing aspects of the Commando played a decisive role, for coupled to the plush suspension and superbly comfortable riding position were the Isolastic engine mounts, which sopped up virtually all the bad vibes the bike's vintage engine offered up. As a result of this honing of the standard Commando's best characteristics, the word got to Europe's (and even, to some extent, America's) street riders that the Commando won its races not because it was hand-grenade quick or ridden by win-or-die kamikaze pilots, but because it was somehow fundamentally different from all the other Britbikes that had soldiered on with vertical twins in the past.
classic bikes such as the Commando, is that these are vintage machines, and as such its pretty silly carrying out extensive modifications
daveh wrote: If they could have fitted 4-valve heads and EFI back in the day, they would have.
Carbonfibre wrote:Its very very easy to post BS on chat forums, but very much harder to back this up with anything even vaguely resembling fact!
Trouble is with this sort of rubbish, is that those that dont know better tend to believe it, so in some cases yet another urban myth comes into being.
In threads concerning top speed, in general it seems that any requirement to have rear wheel BHP figures that are related to the speed claimed, is something that is entirely irrelevant! In the real world any reasonable 10 yr old Jap 600 four will eat something like a Commando alive, both in terms of performance and handling.
Something that seems to be entirely forgotten by some people posting in regard to older classic bikes such as the Commando, is that these are vintage machines, and as such its pretty silly carrying out extensive modifications, which in some cases seem to be designed to make them perform more like a modern machine.
In real terms its very very difficult to make an old classic bike perform anything like a modern bike, so why not just enjoy as is, and simply change very poor OE parts such as carbs and ignition, which makes the bikes nicer to ride and much more reliable?
Rohan wrote:I suppose you have heard of the Piper 4 valve heads for the Commando ?
When someone tried a 4-valve version of the head for a Manx, they supposedly got another 10 hp out of it, which is a lot when they only produced 50 bhp back then (Its a 500cc) . Civilisation will be dead before folks stop trying to get more hp of Manxes ?, whose only purpose in life was to race after all, and which class is still going strong...