Duane:
Thanks. I found the C342 series. There is one, the C342-8652 6 digit LED, which counts up/down using a quadrature signal input. I like the idea of 7mm high LED digits.
I am not sure how the C342-8652 would need to be driven, since all the spec sheet says is that it will accept input from quadrature output encoders. I am obviously thinking of driving it with a pickup driven by magnets on each of the spokes, in order to get enough counts/front wheel revolution that one forget about the Jones counter. If the up/down counting can be made automatic then one would overcome the disadvantage of having to remember to flick a switch.
I don't mind a bit of diy and experimentation. I bought some neat little neodymium magnets which enable me to get multiple pulses per wheel rev on my cheap electronic cycle meter. Has anyone tried one on each spoke to give 36 counts/rev?
Ken:
That looks like a nice comfortable recumbent. I have never tried one. How does the small front wheel compare with larger ones for measuring. I have noticed that people with very small wheeled bikes don't get as good results.