I am looking for a simple and inexpensive rate meter, for under 50.
It seems that both Sachs and Racingline produced such devices in the
past, but not any more.
Inspired by various usenet postings and web sites, I have tried wiring
up a couple of cycle computers, including a bottom-of-the-line model
from Halfords and a fancier wireless model. The problems I have
encountered, in no particular order, are:
1. The cable generally isn't long enough; this can be overcome.
Wireless doesn't have sufficient range to mount the display on the
foot stretcher and the pick-up on the seat.
2. The wheel circumference range isn't sufficient for a single magnet
and a km/h display.
3. The display is not stable, so different rates are registered for
the drive and the recovery. This is because the display updates at 1
Hz, which is fast compared to rowing rates.
Has anyone else encountered these problems? And found solutions?
I wonder if anyone has tried using a pedometer such as the Silva
This is an accelerometer-based device that can display steps per
minute. It costs less than 20.