well if anyone has a scooter chain laying about they are #25 he could check to see if it matched up. REason I'm curious is that there are a ton of cheap electric motor on ebay. Would work for bike assists if I can find a good sprocket for the rear. The friction drive leaves a bit to be desired frankly.

The scooters used a #25 chain. I might have to buy a bit of chain to check it out myself if I cant get an answer.