[OT] Re: [ILUG] Google 'behind the scenes' tech talk
paul at clubi.ie
Tue Nov 16 21:14:26 GMT 2004
On Tue, 16 Nov 2004, Conor Wynne wrote:
> All manufacturers lie about such things.
> e.g.: My YZF-R6 is factory quoted as having 117 Bhp, when in
> reality its closer to 105 Bhp
That's not a lie though, that's due to to you (or the bike mag you
read) not measuring the power in the same way. The manufacturers
usually quote power as measured at the crankshaft, while you/bike
mags usually quote power as measured at the rear wheel, on a rolling
dyno. The difference is power dissipated in the gearbox (the oil
primarily), chain and tyre rubber.
(and that the manufacturer can bench a few blue-printed engines and
quote the best one ;) ).
Still, 105BHP to the road from a 600cc engine, on a ~200kg vehicle,
is pretty impressive ;)
> - just got off the blower to the bike shop talking about that exact
> subject. Now she is booked in for a few hours on the dyno ;-0
1. 95HP on an 105kg vehicle is even more impressive - one day I
*will* own an Aprilia RSV250, oh yes.
Paul Jakma paul at clubi.ie paul at jakma.org Key ID: 64A2FF6A
Genetics explains why you look like your father, and if you don't, why
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