Single gear bike.
Recently there has been a renewed interest in 650B size wheels and tires and bikes built with a single gear. The 650B rim is 25 mm larger than a 26" mtb rim but 38 mm smaller than the standard 700C road rim. Many believe this to be the ideal size for touring and commuting bikes. A single gear is often all that is needed on a commuter.
Here is a 650B bike that we recently built using some of the customer's own components.
Mariposa 650B single gear bike.
Rear brake cable hanger. Brooks Swift saddle. Campagnolo seatpost.
Front bag support with fender mounted light.
Fork crown detail showing braze-on fender mounts and brazed-on Mafac brake
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Narrow style front bag support mounted to brazed-on brake bosses. | Honjo rear fender with Mariposa custom stay. |
Specification
of 650B single gear bike,Items marked * are not normally available. We will suggest alternates.
| Frame: | Mariposa, Reynolds 531 tubing. |
| Fork: | Mariposa, Reynolds 531 with wide sloping crown. |
| Headset: | FSA Duron. |
| Hubs: | Phil Wood. |
| Rims: | *Super Champion 650B |
| Spokes: | DT stainless, 14 G. |
| Tires: | *Michelin 650B |
| Chain: | Scram ½" x 1/8" |
| Crankset: | T.A. Pro 5 Pin with single ring and chainguard. |
| Sprocket: | Miche fixed. |
| Bottom bracket: | T.A. Pro Classic |
| Handlebar: | Nitto with leather covering. |
| Stem: | Nitto Technomic. |
| Brakes: | *Mafac Raid fitted to brazed-on bosses. |
| Saddle: | Brooks Swift. |
| Pedals: | Campagnolo Record SL with clips and straps. |
| Seat post: | Campagnolo stainless. |
| Carrier: | Mariposa front bag support. |
| Handlebar bag: | Gilles Berthaud. |
| Fenders: | Honjo with Mariposa custom stays. |
| Lighting: | LightSPIN generator with fender mounted front and rear lights. |
| Pump: | Zefal HPX. Painted to match frame. |
| Brazed-on pump peg on seat tube. | |
| Bottle cages: | Topeak stainless. |
| Finish: | Light grey/blue. Chrome crown, front and rear ends. |
| Price: | CDN$ |
mike@bikespecialties.com | 45 Cranfield Rd, Unit 6, Toronto, ON M4B 3H6 | 416-423-0456