Gemini (Alpha) – 150mm Hardtail Trailbike

Named for NASA Project Gemini, since it’s the bike after Mercury. This is the first of a pair of bikes, one mountain and one road. They will reflect a snapshot in both disciplines of my bike design techinque. They will share several design cues. They will proabably be painted the same color.

Since these will be a pair of twins under the Gemini name, I chose Alpha (mtn) and Beta (road). These are the techncal names for Castor (Alpha Geminorum) and Pollux (Beta Geminorum), the mythological twins and the brightest stars in the Gemini constelation.


Frame : PVD Gemini (Alpha), 655mm FC.
Paint : Powder, RAL 3005, Wine Red
Fork : Rockshox Revelation 150mm Dual Air, Tapered Steerer, QR15
Stem : Salsa SUL 100mm, 15 degree
Handlebar : Enve Carbon Flat 700mm
Front Brake : Shimano Saint, BR-M810
Front Rotor : Shimano XTR, SM-RT98-L (180mm)
Rear Brake : Shimano Saint, BR-M810
Rear Rotor : Shimano XTR, SM-RT98-S (140mm)
Brake Hose : Shimano SM-BH59
Brake Hose End Cover : Shimano Y8H203000
Shifter Set : Shimano XTR10
Shift Cable : Shimano Dura-ace, 1.2mm, Y60098900
Shift Cable Ends : Cane Creek, Silver, 1.5mm
Shift Housing : Shimano SP-41, 4mm
Shift Housing End Caps : Shimano Sealed, Y6AM98080
Shift Housing End Cover : n/a
BB Cable Guide : n/a
Crank : Shimano Deore XT10, FC-M770-10
Outer Ring: Shimano XTR 38t
Inner Ring: Shimano XTR 26t
Bash Ring: PVD Magic Ring
Crank Fixing Bolt : Shimano XTR #Y1E511000
Bottom Bracket : FSA BB92 Press Fit
Pedals : Shimano XTR Trail Clipless
Front Derailleur : Shimano XTR10, Double
Cassette : Shimano Deore XT10, CS-M771-10 (11-32)
Rear Derailleur : Shimano Deore XT10, GS
Chain : Shimano XT10, CN-HG94
Front Hub : Shimano XTR
Front Rim : ZTR Flow Rim 32H Black
Front Spokes : DT Swiss 1.8/1.6/1.8
Front Spoke Lacing : 3 Cross D, 3 Cross ND, Disc lace
Front Nipples : DT Swiss 1.8mm x 12mm Alloy
Front Skewer : Shimano XTR w/ Dura-ace nut
Rear Hub : Shimano XTR
Rear Rim : ZTR Flow Rim 32H Black
Rear Spokes : DT Swiss 1.8/1.6/1.8
Rear Spoke Lacing : 3 Cross D, 3 Cross ND, Disc lace.
Rear Nipples : DT Swiss 1.8mm x 12mm Alloy
Rear Skewer : Shimano XTR w/ Dura-ace nut
Rim Tape : 25mm Yellow Tape, Flow Rim Strip
Inner Tubes : n/a
Tire Sealant : No Tubes
Front Tire : Hutchinson Cougar 2.1″ Tubeless
Rear Tire : Hutchinson Cougar 2.1″ Tubeless
Upper Headset : Cane Creek IS, 1.125″
Lower Headset : Cane Creek XXII 44, 1.5″
Grips : ODI Rouge Lock-on
Seatpost : Easton EC90 Zero offset
Seatpost Shim : n/a
Seatpost Clamp/QR : Chromag
Saddle : WTB Silverado Ti, 274mm

Total Weight : 25.25 lbs.
Special thanks to Fairfax Cyclery and Cane Creek Cycling Components