negative. i measure the virtual centreline* of the seatube, regardless of its inclination. e-RICHIE chester, ct
* i spelled it he British way to show that i have learnin'.
On Thu, 12 Aug 2004 09:52:20 -0700 David Cowie <recycle@wmni.net> writes:
> Hello list, I have followed the thread and It seems that the only way
> to
> prevent variables (tire size, headset stack ect.)in measurement is
> to
> measure from the bb center line to theoretic axle possition.
> Measured
> along frame centerline.
> Doe's anyone measure the seat tube length using a vertical line from
> the
> ground?
>
> David Cowie
> Sutherlin, Oregon
> 95ยบ
>
>
> Richard M Sachs wrote:
>
> > postscript to prev reply...
> > how different is this issue from when angles are speced
> > and then folks 1)switch forks or headsets or 2) have unequal
> > tire types and air pressures front to back. these would skew
> > any angles from their blueprinted numbers. what's the point
> > of measuring an intersection between the top and seat tube
> > if you can't guaranty the frame is level?
> > blueprinted chainstay specs don't have to equal the results
> > you get with your tapemeasure on your assembled bicycle.
> > e-RICHIE
> > chester, ct