Power Thrust Curves

Warm? That's such a big urban myth about Blighty beer. I can thrust-curve a cold pint of tasty sparkling lager (is there any other tepidity?) down my gullet in ten seconds flat. But then again I'm English, which is different from being British, which is not the same as being European. Britain is made up of multiple countries with different drinking habits. Whilst Guinness is arguably the most popular drink in Ireland, which is actually a Republic nowadays, it's not as popular in British countries such as England, Scotland and Wales. And most certainly not in England, whose national flag is 'not' the Union Jack! Just thought I'd clear those cultural things up! ;-D

Shuggs, cap'n and jag. There's a bit of a real ale boom going on in blighty at the moment. Loads of choice of a wide range of beers, all top quality IMVHO. A lot of it from "down south" too, which is unusual.:D

Two of my favourite bottled beers at the moment are from Aberdeen, and Maryland US of A. They taste equally good served at room temperature or slightly chilled. Whichever takes sir's fancy on the day. Splendid.

Jag, have you considered an electronic calculator? They're remarkably cheap these days.

It might be my eyes, but the cross of st George looks to be at the very front of the union flag. Caledonia is at the back.

Funnily enough it's a "myth" that the British themselves are happy to perpetuate when painting an idealised picture of a homogeneous national identity. John Major in 1993:

‘Fifty years on from now, Britain will still be the country of long shadows on cricket grounds, warm beer, invincible green suburbs, dog lovers and pools fillers and, as George Orwell said, “Old maids bicycling to Holy Communion through the morning mist.”’

Ironically, in the essay from which his quote was lifted Orwell (real surname: Blair) was actually arguing that even England on its own (as distinct from Britain) was not so readily capable of being reduced to defining stereotypes:

‘Are we not forty-six million individuals, all different? And the diversity of it, the chaos! The clatter of clogs in the Lancashire mill towns, the to-and-fro of the lorries on the Great North Road, the queues outside the Labour Exchanges, the rattle of pin-tables in the Soho pubs, the old maids hiking to Holy Communion through the mists of the autumn morning – all these are not only fragments, but characteristic fragments, of the English scene. How can one make a pattern out of this muddle?’

In a related twist of irony Mr Orwell also wrote an essay describing a fictitious idealised London pub titled The Moon Under Water, a name which went on to be appended, shamelessly, to several soulless fake-authentic lounge bars operated by a certain national chain…

I'm not up on Orwell or Martin, but I do know dick van dyke once said

"step in toime, step in toime. Maywee pappins."

My 'escaping reality' kit is a bit depleted at the moment. I've only got one tin of Bud, one bottle of Blackthorn cider, some 100% proof Southern Comfort (good for the sinuses if you snort it), dark Bacardi, double-barrel single-malt scotch, and various chardonnays, pinot, shiraz and merlot in my starter castle right now. Perhaps if I mix a little of them altogether, in a pint glass, like some kind a mad Glaswegian whiskey-chaser it just might do the drink!

Right I'm off to make the missus pork pilaff... ooh I'm such a domestic goddess in the kitchen I am! ;-D

Kev has panigale power/torque curve on his technical archive section.

If the torque is expressed as ftlb I suppose it would.

I suspect 750 watts as a constant creeps in here. Can't see graph very well and can't make out units. Suspect kgm or Nm. Would be easy to calculate to find out.

Shuggs, I meant to write Glasga! I haven't opened the Balvenie "DoubleWood" 12 Year Matured Single Speyside Malt Scotch Whisky yet; might save that one for Christmas Day!

It's interesting how the scale says it's Lb.ft, but the line graph is clearly measuring Nm. Crank figures are extrapolated, but based on most manufacturers claims versus RWHP 10-15% loses are common. I suspect this will be particularly efficient in it's transference, equating to 10% or so as Pittsy surmises.

It'll be thereabouts in terms of class leading power, but should be a lighter bike based on the manufacturers claims. Although, and just like BMW, Ducati's weight claims do seem a bit subject to smoke and mirrors jiggery-pockery as we all know.

"What did Ducati claim as the maximum RWHP?"
... no manufacturer claims a rear wheel figure (more is the pitty), but the crank figure claim is 162 hp, so 20% or whatever. Depends what dyno you used of course, plus wind direction and speed, and if the operator had one trouser leg rolled up or not.

Your last three sentences use the word assume. I'll not elaborate! ;-D

A set of accurate scales, a most commonly certified and recently calibrated dyno, run in a environment controlled room at median ambient temperature, with disclaimed fuel octane rating and an actual bike wouldn't go a miss. Until we get those things, then the could, should and might will remain just that I suspect!

There's a lot of variables here, but one near constant is the same rider and rubber on the same day using a data logger to dissect average lap performance. But again until we have a bike...

I'm not clever enough to talk about thrust curves with any degree of technical ability, like many of the contributors probably can. But it does seem to me that the sooner we stop talking about unknown quantities (Panigale) and stick to known quantities (released bikes) the more relevant (accurate) the physics of the discussion will be. Don't want to highjack the thread, it was just a thought! :-D

I hope ducati's crank power figures include running the crankcase pump or that's just plain cheating! Incidentally, using a crankcase pump apparently has a compound effect on the gains. For example, as well as improving pumping losses and oil drag it allows the use of lower tension oil scraper rings, further lowering friction. Wonder what other subtle gains there are? These will all be offset against the power to run the pump though.

Cap'n, regarding your comment that the panigale transmission will be extra efficient, don't forget that the gains in efficiency talked about so far are to do with the "engine". So that will express itself in the crank power output anyway. The transmission may or may not have efficiency tricks up it's sleeve, but we need to be careful in assuming so. No?

Lower pressure will affect the oil seal friction, for the better, so maybe it will be better than the "average". Anyone know or think of other ways in which lower pressure will benefit a gearbox? Lowering the oil level beneath the gears and spraying oil into "the mesh" should improve friction/drag and allow higher speeds.