Tapered Head Tube Mountain Bike Frame

Most modern single crown mountain bike forks have a 1 5 in tapered steerer tube 40mm crown race steerer tube crown race seat dimension what do all these numbers mean.

Tapered head tube mountain bike frame.

This attempts to provide the best of both worlds with a wide crown that provides improved steering stiffness with a tapered. In a rare move i wish to cite richard cunningham from road bike action for points 1 2. Frame size number frame size letter wheel size a seat tube b seat tube angle c head tube length d head angle e effective top tube f bottom bracket height g bottom bracket drop h chainstay length i offset j trail k wheelbase l standover m frame reach n frame stack. More commonly tapered steerer tubes will taper out to 1 5 inches which has a 40mm crown race seat so a 40mm crown race is needed.

Lighter and stronger are the real gains. Tapered steerer tubes are the most common arrangement on modern bikes. If the taper is too long or the head tube too short the upper headset assembly will jam on the steerer. Look who has the longest unbroken history of carbon fiber frame making in pro road racing uses the tapered fork steerer design to eliminate the narrow waist at the junction of the fork crown and steerer.

Also there is coolness factor.