All frames have 1in head tube extension built in. – Seat setback: The 71-degree seat angle places the seat about 1.5 … That’s significant. It can handle a dropper post with internal routing, so one can have that option with a 10-speed … We are not exactly talking about 73 degree versus 74 degree here, but rather a more dramatic shift forward of the body, more like … But for every 1-degree difference and 55cm traveled, the fore-aft difference is 1cm. A very general bicycle fitting rule (to optimise pedalling efficiency) is to have your knee reach the pedal axle (see diagram). Maybe in 1000 miles you will have a whole new perspective on this issue. I have long legs, and I'd need to slide my saddle as far backwards as possible on a seat post with setback to make a bike with that angle seat tube fit me. Head Tube: Integrated 1-1/8″ TNT PRO FRAME . The seat tube angle is the included angle between the seat tube and the top tube (assuming that the top tube is level, or the angle between the rear of the seat tube and the ground plane. TT Length: 20.75″ Chainstay Length: 14.5-15.75″ Head Tube Angle: 74 Degree. I went out and rode my temporary frame and discovered that the difference of one degree on the seat tube angle makes all the difference in the world. I went from a 74 degree back to a common 73, and lost 10 minutes on a ride. I have a suggestion, since you are an advocate of steep seat angle, why not keep using that forward post. A 74 STA is on the steeper side for a road bike (any steeper any you're looking at tri or TT bikes). Seat Tube Angle: 71 Degree. The article stated that, "At a seat tube angle of 80 degrees, mean VO2 was significantly lower and power efficiency significantly higher compared with an angle of 74 degrees." All that means is, if you draw two 21.6-inch lines from the same point in space, … This study is interesting because it tests not only three different seat angles (68, 74, and 80 degrees… Seat tube angles are most often in the range of 72 - 74 degrees on modern bicycles. One or two degrees angle will amount to didly swat. Note that the seat angle is virtual if the seat tube is raised, so our tester with a slammed seat will never see this angle. Weight: 1708 Grams. Seat Tube Angle: 72 Degree. (So you don't have to use as many headset spacers). Don’t be intimidated by the metric system or the math. With a seat post with no offset, a 74 degree STA will not … Geometry is standard fare, with a 64-degree head angle and 74-degree seat tube angle. Other factors are at play here. Look at all the XC bikes with 73-74 Seat tubes. A steep seat tube angle allows racers (and anyone else who wants to ride fast) to achieve a … 74 degree seat tube angle. If you were to slacken a seat tube angle, your knee may not reach as far as the pedal … I found that I could not turn faster than about 60 rpm in any gear (I normally turn … Chain stays are 44cm from the center of the bb to the center of the rear axle. When it comes to smashing your stuff, a millimeter is as good as a mile. 72mm rake of fork rake. On a bike, the difference between a 72-degree seat tube angle and a 74-degree one doesn’t sound like much. Seat Tube Angle Comparison for 57cm Bikes: Touring bikes 71-73 degrees Road bikes 73 degrees CX 73 degrees. Weight: 1729 Grams. Seat tube angles have zero to do with how well or how poorly a bike climbs. I run a 75 degree seat tube on a triple chainring HT with no operational problems. 34mm of trail with a wheel flop of 10mm. 71mm of bottom bracket drop. The extra upward tilt of the rear section of the derailleur will amount to about 1mm. Most of Specialized's Tarmac frames have seat tube angles from 73° to 74°, although the very small 44cm model has an unusually steep seat tube angle of 76° which moves the saddle closer to the handlebar for less of a stretch. 72 degree head tube angle. Likewise, 74 degrees offered more efficiency than 68 degrees. – Seat angle comparison: 71 degree vs. 74 degree (slack vs. steep) – Vertical seat height: The 71-degree seat angle places the seat almost one-half inch lower. Head Tube: Integrated 1-1/8″ TNT PRO-XL FRAME . 74-Degree one doesn’t sound like much a triple chainring HT with no operational problems seat angle places the about... 14.5-15.75€³ head tube angle Comparison for 57cm bikes: Touring bikes 71-73 degrees Road bikes 73 degrees CX 73 CX!: 74 degree zero to do with how well or how poorly a bike the. Ht with no operational problems suggestion, since you are an advocate of steep seat places! 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