SV throttle roll-on times.
 

I heard on a recent edition of Top Gear that the new Porsche 911 Turbo can accelerate from 40mph to 60mph in 1 second. Seems ludicrous to me and hard to actually imagine, but it got me thinking. Since that's the type of acceleration we use everyday for overtaking, I thought I'd look at the times claimed for the SV650. I found this on an old forum:

"...published in May 1999 Cycle World:
1/4 mi. 11.85 sec. @ 110.17mph.
0-30 mph 1.34 sec.
0-60 mph 3.20 sec.
0-90 mph 6.79 sec.
0-100 mph 8.76 sec.
40-60 mph 3.27 sec.
60-80 mph 3.90 sec.
Measured top speed 128 mph"

For a start, it doesn't seem logical. How can it take longer for the bike to accelerate from 40-60mph than from 0-60mph? Surely if you have it in the right gear (at a guess, second gear), lean forward and whack the throttle open, it's going to accelerate just as quick as it would during a standing start.

Might be a bit dodgy if you start to overtake and a Porsche thinks:
[-X "Oh no you don't!" and steps on the gas just as you go by. :smt103
No time to react if they can do it in 1 second.

What are your thoughts?

Re: Roll-ons etc
 

I think that acceleration might be measured in top gear.

Re: Roll-ons etc
 

Top gear roll ons with definitely be slower than optimum gear roll ons.

Re: Roll-ons etc
 

They are comedy Yank performance figures.

No bearing in Blighty...... well except it shows how slow/fat we Brits are.:p

Re: SV throttle roll-on times.
 

In my very un-scientific test of counting one thousand two thousand etc I timed my blade from 60-100 in top and it took 6 seconds, but that was uphill.

HTH :rolleyes:

Re: Roll-ons etc
 

So d'ya reckon the Porsche's 1 second 40-60 would be in the optimum gear then? They can't mean top gear.

Re: SV throttle roll-on times.
 

One of the reasons the 0-60 is over 3 seconds is that you have to shift up to second to hit 60 on the SV. Mine hits the limiter at just under 50 I think.

Re: SV throttle roll-on times.
 

More than likely. Optimum gear, optimum revs (torque window).

Getting a bike under three seconds is pretty difficult full stop. I don't think my bike would manage it and that does 98 in first, so no need to change gear.

Re: SV throttle roll-on times.
 

98 in first is pretty sick! The gear you creep 'round car parks in.


:plod: :driving: :smt117

:smt098 :riding: :smt098