Soma Fabrications, which gets its name from the San Francisco name of South of Market Street has become a favorite bike brand among those of us who want to build our own bike with high quality reasonably priced parts.
We love how Soma Steel frames ride. Rider after rider tell us how no matter how many higher end bikes they have in their garage, they always grab their Soma when they go out on their favorite rides.
We love their beautifully simple paint jobs, minimalist graphics, and more importantly the flexibility that their frames provide
We love them so much that we build up a number of Custom Soma Bikes that are high end commuter bikes, thoughtfully made touring bikes, cyclocross bikes and belt drive bikes that make our souls purr.
Other Popular House Builds include:
- Soma Weltgrinder Rohloff - a premium Rohloff internally geared touring bike available as a 700c or 650B.
- Soma Wolverine Daily Grinder - the ultimate commuter bike.
- Soma Fog Cutter Pinchon - a gravel bike built the way we'd spec our own personal bikes.
- Salsa Vaya Deore Especiale - a Salsa Vaya that is customized for City Commuting.
Check out our other killer Belt Drive Bikes too.
- How does One Install a belt on the Second Generation (V2) of the Soma Wolverine Frame?
- This version of the Wolverine Soma Frame (V2) comes with what's called a Split Seatstay Design. This allows you to easily install / replace a Gates Belt by unbolting the right seatstay and then sliding the belt through the gap. (see detail pic below)
- What are the best style of Brakes to use with the Soma Wolverine?
- The best option are brakes that have 160mm rotors (for great stopping power) and that fit international standard mounts that are specced on the Wolverine.
- I want to build up the Wolverine, wwhat are the specs I need in order to get the right components?
- Front derailleur clamp: 28.6mm
Rear hub spacing: 135mm
Seat Collar: 29.8mm to 30mm (NOT INCLUDED W FRAME)
Headset: 1-1/8" external cup (SHIS: EC34/28.6 | EC34/30)
Bottom Bracket Shell: 68mm wide, English Threaded
Brake Compatibility: 160mm rotors, International Standard Disc mounts
Chainstay length range: 425-440mm (Soma Fabrications strongly recommend you avoid placing wheel in the Very back of dropout- bad things happen)
Water bottle bosses: 2 sets of mounts
- What is the recommended Carbon Drive Setup for the Soma Wolverine
- For the Alfine 8 spd hub, we recommend 46t front, 24t rear, and 115 length belt, with the dropout set at 440mm from the center of the BB axle. We recommend the new Center-Track system. Please note: Shimano Alfine Di2 does not fit on the Wolverine due to the Di2's Belt line is not compatible with the Soma Wolverine.
For the Rohloff hubs (compatible with this Split-seatstay design): For a gravel Grinder setup we love setting it up with a 55t in Front x 19t in back with a 115 Belt; 440.19 chainstay setting is a great starting point. For touring or adventure /trail use, use a smaller front ring.
For Single Speed setups: 46t in front x 26t in back x 115 belt and set the chainstay to 435.19mm
We strongly recommend you use the Gates Drive Calculator to figure out your gearing - it is a real help. We recommend starting with 430mm as a chainstay length. This will help you get a useful belt length when you plug in your preferred f