Tumbleweed Prospector - Midnight (Blue)
The Prospector is a timeless and rugged expedition mountain touring bike, designed around the stalwart Rohloff Speedhub drivetrain. It’s a bike designed to be reliable, tough and field serviceable in the harshest of conditions. In the face of ever changing bicycle part standards and the integration of exotic materials, the Prospector is built to last and to buck the trend of short product cycles and throw away upgrade culture. We believe that the most important features of a reliable expedition bike are a comfortable fit, a tough frame/fork, strong wheels, reliable components, and as much tire/mud clearance as possible.
Fork Options:
- 135mm Quick Release fork with rear disc spacing: The original fork that we offered with the Prospector, uses the same spacing as the frame
- 110x15mm Boost thru axle: Allows you to swap between rigid and suspension forks without needing to build a new front wheel.
- 150x15mm thru axle. The modern fatbike front hub standard. Lots of hub options, wide hub flanges for great spoke triangulation and super strong wheels. You can swap this fork with something like a RockShox Bluto in 80-120mm of travel.
Specs:
- Frame Material: Chainstay width is 140mm, crank arms must have 144mm inner width, 24mm spindle recommended
- Rack/Fender Compatibility: Rack and fender compatible, three bottle mounts on frame triangle
- Fork: Unicrown Chromoly steel with 135mm quick release, 110x15mm thru axle (thru axle included) or 150x15mm thru axle (thru axle included), upper and lower rack mounts, fender mounts, triple bottle cage mounts on fork legs, internal dynamo wire routing
- Max Tire Clearance: 26x4.0", 27.5x2.8-3.8˝ and 29 x 2.1-3.0˝, individual tire and rim combos affect tire clearance
- Headtube: 44mm I.D.
- Headset: Recommend EC44 lower cup. ZS44 upper cup.
- Bottom Bracket: 73mm, threaded English (1.37˝ x 24t) Phil Wood Eccentric Insert. M8 cupped point set screws (8mm x 1.25 thread pitch)
- Rear Axle: 135mm quick release
- Seatpost Diameter: 31.6mm
- Dropper Seatpost Compatibility: Internally routed for dropper post
- Seat Clamp (included): 35mm
- Drivetrain Compatibility: Rohloff or 1x derailleur drivetrain recommended
- Brake Compatibility: 51mm I.S. disc caliper mounts, 180mm max rotor size, minimum 160mm rotor
- Fork Axle to Crown: 483mm
- Fork Steer Tube Length: 300mm
- Rear dropouts: Vertical with integrated non-driveside Rohloff OEM slot and replaceable derailleur hanger, 135mm quick release or bolt-on hub spacing compatibility; features threaded M5 and M6 eyelets for fenders and racks
- Chainring clearance: 1X Boost, 1X Super Boost
- Crank clearance: Chainstay width is 140mm, crank arms must have 144mm inner width, 24mm spindle recommended
While the Prospector is derailleur compatible, it was designed specifically around the Rohloff SPEEDHUB, a 14 speed internally geared drivetrain that has proven itself to be supremely dependable and capable. We've been using Rohloff hubs on our tours for over a decade and tens of thousands of miles through sand, mud, snow and at elevations of up to 18,000' without issue.