Hello everyone,
As you can see I have rejoined the list again. There is very interesting
Cyclo double chain wheel on ebay. Cyclo use to provide a service where they
would rivet one of there rings onto a customers chainring. They would only
do this in 5-pin patterns and there had to be a least eight teeth difference
between the two rings. This was a really usefull service for tandem users
and this is probably what this one on ebay was made for. Brings back
memories of my Father-in-Laws shed with these tandem rings he used on his
crossover drive hanging from the nail.
http://cgi.ebay.co.uk/
Michael Butler Huntingdon UK.