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- Path: sparky!uunet!decwrl!waikato.ac.nz!comp.vuw.ac.nz!cc-server4.massey.ac.nz!F.Brown
- Newsgroups: rec.running
- Subject: Re: Mileage meters
- Message-ID: <1992Nov22.201711.19766@massey.ac.nz>
- From: F.Brown@massey.ac.nz (F.J. Brown)
- Date: Sun, 22 Nov 92 20:17:11 GMT
- References: <857@jgaltstl.UUCP>
- Organization: Massey University, Palmerston North, New Zealand
- Keywords: mileage bicycles
- Summary: Measuring courses
- X-Reader: NETNEWS/PC Version 2c
- Lines: 37
-
-
- >Does anyone know where you can get the 'gadget' which is attached
- >to a bicycle and then used to measure distances?
-
- Bike shops.
-
- >I know they are
- >often used by race officials to lay out a certified course.
- >What are they correctly called?
-
- Bicycle computers. Briefly, there are many models. You only need
- the most basic as I presume you're not interested in speed, max speed,
- time elapsed or altitude of the bicycle. They are only as accurate
- as the wheel circumference calibration you enter into the computer (read the
- manual): you should measure wheel circumference whilst the bike is weighted
- with the rider, at precisely the tyre pressure you intend using during
- the measurement. This is best achieved by painting some bright and viscous
- substance in a narrow line across the tyre and riding slowly down a smooth
- path. Measure distance between the marks.
-
- Certified courses are ***not** measured with bike computers, but with a
- hand-pushed wheel with a solid tyre (to reduce pressure variation), bearing
- a device similar to a bike computer. The odometer on older models operates
- mechanically rather than electronically.
-
- Cheers,
-
- Frith
-
- --
- ==============================================================================
- Frith Brown E-mail: F.Brown@massey.ac.nz
- Department of Plant Science Level 2 Phone: +64 06 356 9099 ext. 8800
- Massey University Fax: +64 06 350 5614
- Palmerston North
- New Zealand :-) Ride the bike, ride the bike, ride the bike ;-)
- ==============================================================================
-