I like this bike, I have sentimental attachment to this bike. Hello Olivier, glad to hear you are riding your Meral. Of course, some of this can be mitigated with shorter cranks, such as 165 or 170mm arms. 26" to 650b conversion | Stumpjumper : r/bikewrench - Reddit Are Chainless Digital Drive Bicycles The Future of Cycling? The manufacturing costs of high-end tires like our Compass tires are too high to make suitable for production bikes, but now that others offer OEM-spec tires in this width, we are seeing many production bikes designed around wide 650B tires. So, if youre running non-disc brakes, youll need to have your brake mounts moved or find brake calipers with a really long reach. 700C to 650B Conversion, Road Bike to Gravel Rig - BIKEPACKING.com If you have any further questions, feel free to send us an email. In the following section, well look at why the ideal 700C to 650B conversion involves a bike built around skinner 700C wheels that normally fit less than 40mm tires, like a touring or cyclocross frame. Using narrow 650B tyres has less of an effect on frame geometry than a narrow 26 inch. Is my Santa Cruz Nomad 2013 (L) full suspension Aluminum able to be converted from 26 ->27.5?