Kogswell
Frameset - Model G: single/fixed, 700C x 120mm H O M E  |  P R I N T

Start with a lugged steel track frame from the 1980's. Keep the 120mm rear spacing. Relax the angles and lower the bottom bracket to make it comfortable on the road. Add lots of clearance for big tires and fenders. Drill it for brakes. Finish it off with all the braze-ons and threaded doo-dads that you could ever want, including a few you didn't even know you wanted. And don't do anything to compromise its elegant simplicity. That's The G.

Our new Model G frameset is a very sophisticated entry into the emerging market for road frames designed specifically for single speed and fixed gear use. Like our Model F, we designed a matching rear hub to complement it. The new 120mm hub has all of the features of its 135mm cousin: an axle and bearings from a downhill mountain bike hub, track threading on both of its flip/flop sides, and ultra fancy hardware. This lugged steel frame comes with a matching 1" threaded fork. A threadless 1.125" fork is also available. Both forks are brazed using our new flat fork crown.









Photo: sample 58cm Model G frame and fork














Geometry (mostly in millimeters)
  Size SeatAngle HeadAngle ForkRake TopTube ChainStay BBDrop
   54    72.0      74.0       44      550      425      72
   58    72.0      74.0       44      579      425      72
  Note: the Size is measured center-to-top
Blueprints (click on the images to see larger PDF versions)

G54 - click to view blueprint
G58 - click to view blueprint
Details
  • the 120mm rear spacing allows you to use standard track cranks and hubs
  • a low bottom bracket height offers more stand-over room
  • room for 35mm tires and fenders -or- 40mm tires in the dry
  • thru-the-top-tube rear brake cable routing
  • the frame-ends accept single freewheel, fixed gear, coaster brake and some 3-speed hubs
  • the finish is a tough, environmentally friendly metallic silver powder coating
  • threaded, 1" fork brazed with our new Kogswell Krown
  • clearance for Kogswell long reach (48-63mm) brakes
  • two sets of mounts for H2O bottles and seat stay mounted rack eyelets
  • double eyelets on the rear dropout and single on the front
  • threaded fender bosses on the bridges and the fork
  • sized for a 68mm English BB shell and a 27.2mm seatpost
  • includes a set of silver Kogswell brake calipers and Kogswell head tube reducers







Here's the real showstopper for the Model G: the TIG'd BB shell

















Our new flat fork crown debuts with the G model


















There's plenty of room for fenders and big tires


















We changed the seat lug - the new one is socketed - I don't like it - do you?

















Our framesets all have perfect fender mounts front and rear

















Besides changing to 120mm spacing at the rear, we also modified the rear ends a bit - the eyelets are now out of the way of the axle nuts - evolutionary, not revolutionary















And now all Kogswell framesets come with threaded, 1" forks - I can hear the quill stems going up and down in anticipation!