The Prospector was built around a custom yoke designed by Anna Schwinn. This yoke allows for ample tire clearance at 4″ max, while still keeping the q-factor more narrow than common fat bikes today.
The Prospector was also built around the Rohloff speed hub, and a 135 mm symmetrical rear spacing. The bike comes with a 73mm Tumbleweed exclusive Phil Wood Eccentric Bottom Bracket which allows you to tension the chain or drive belt for the Rohloff or a singlespeed setup. The vertical dropouts are also designed by Anna Schwinn with a Rohloff OEM slot.
While the bike is Rohloff optimized, it can also accommodate derailleurs. The bike can fit a 24-38 double or 24-32-42 triple. With the eccentric bottom bracket in the rearward position, the bike is limited to chainring size. 1x and offset 2x drive will work with 3″ tires and a derailleurs.
The frame and fork are built out of a double butted heat treated cromo and come in two colors, a New Mexico Turquoise and a Desert Sandglow. The front triangle is large to accommodate plenty of frame bag space, while the rear triangle comes with beautiful curved seat stays that give it a unique look. The bike is also compatible with a 100mm or 120mm suspension fork such as a RockShox Bluto.
We are testing the bike with 27.5+ wheels with 50mm rims. The Tumbleweed Prospector does, however, have the tire clearance for 26×4″ on 65mm rims, and 29×3.0″ on 50mm rims. It came stocked with WTB Ranger 3.0 tires mounted to WTB Scraper rims and a Surly front hub.
The frame comes with a variety of mounting options for whatever your needs may be.
The bike is rounded out with SLX brakes, Surly OD Cranks, Thompson bars and seatpost.
You can currently pre-order your Tumbleweed Prospector today. You can purchase the frameset and Rohloff SPEEDHUB drivetrain kit for $2550. Alternatively, the frameset alone is going for $1450, but if your pre order before the end of 2016, you will receive special pricing at $1300. Daniel will also be taking custom assembly bike orders on demand. Email Daniel with frame inquiries at Daniel@Tumbleweed.cc or just head over to Tumbleweed.cc for specifics.