P
Peter Clinch
Guest
NYC XYZ wrote:
> But you've got to check the gears, too, afterwards, to make sure
> they're shifting right and all. I don't think they did too much of
> this, though...he probably checked for half a minute!
This is fair comment, but 30 seconds should be enough in the first
instance, which still leaves us rather a lot of time. Tweaking the
gears is easy enough with the adjuster screw where the gear cable
goes into the rear mech, just needs the odd tweak to tune the shifting.
> Now now, we all know about names and marketing...but I didn't know 80%
> of effort expended in on behalf of air resistance!
That is, IIRC, the approximate figure on a DF, though I can't
remember if that's on the hoods, in a heavy tuck or what. But it
does show approximately the degree to which speed is dominated by
aerodynamics any time you get any sort of fast.
> Still, my point is
> that I should be at least as good as a DF, given my better aerodynamics
> on the SMGT
They're not /that/ much better. I have my seat reclined as far as
possible and it's pretty clear that cycling with pals on DF leaned
over the drops that the frontal area catching the wind isn't all
that different. When they go into a full speed crouch it's quite
obvious they have less frontal area than me.
If you want better aero, that's what the Speedmachine is for (and
to some extent, the Grasshopper).
> Yes, I knew this going in, but I figured that I'd rather have more
> puncture-proof or puncture-resistance than speed, if the penalty isn't
> too large and way out of proportion.
To put the dangers into perspective, I've had 2 punctures on mine
in 5 years running standard Marathons. They give very good
puncture resistance. The M+ is only really an issue if you're in
Puncture Hell, otherwise they'd be standard issue rather than the
plain Marathon.
Pete.
--
Peter Clinch Medical Physics IT Officer
Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital
Fax 44 1382 640177 Dundee DD1 9SY Scotland UK
net [email protected] http://www.dundee.ac.uk/~pjclinch/
> But you've got to check the gears, too, afterwards, to make sure
> they're shifting right and all. I don't think they did too much of
> this, though...he probably checked for half a minute!
This is fair comment, but 30 seconds should be enough in the first
instance, which still leaves us rather a lot of time. Tweaking the
gears is easy enough with the adjuster screw where the gear cable
goes into the rear mech, just needs the odd tweak to tune the shifting.
> Now now, we all know about names and marketing...but I didn't know 80%
> of effort expended in on behalf of air resistance!
That is, IIRC, the approximate figure on a DF, though I can't
remember if that's on the hoods, in a heavy tuck or what. But it
does show approximately the degree to which speed is dominated by
aerodynamics any time you get any sort of fast.
> Still, my point is
> that I should be at least as good as a DF, given my better aerodynamics
> on the SMGT
They're not /that/ much better. I have my seat reclined as far as
possible and it's pretty clear that cycling with pals on DF leaned
over the drops that the frontal area catching the wind isn't all
that different. When they go into a full speed crouch it's quite
obvious they have less frontal area than me.
If you want better aero, that's what the Speedmachine is for (and
to some extent, the Grasshopper).
> Yes, I knew this going in, but I figured that I'd rather have more
> puncture-proof or puncture-resistance than speed, if the penalty isn't
> too large and way out of proportion.
To put the dangers into perspective, I've had 2 punctures on mine
in 5 years running standard Marathons. They give very good
puncture resistance. The M+ is only really an issue if you're in
Puncture Hell, otherwise they'd be standard issue rather than the
plain Marathon.
Pete.
--
Peter Clinch Medical Physics IT Officer
Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital
Fax 44 1382 640177 Dundee DD1 9SY Scotland UK
net [email protected] http://www.dundee.ac.uk/~pjclinch/
