A frame has a 19" toptube,71 degree seat tube angle and a 75 degree head tube angle and B frame has a 19" toptube,74 degree seat tube angle,and 73 degree head tube angle...hmmm,I wonder which frame would have alonger feeling front end...Bike A I would think.
Quote from: Scuffy on June 29, 2010, 06:26:10 AMA frame has a 19" toptube,71 degree seat tube angle and a 75 degree head tube angle and B frame has a 19" toptube,74 degree seat tube angle,and 73 degree head tube angle...hmmm,I wonder which frame would have alonger feeling front end...Bike A I would think.Bike B will be much longer.
I always thought tt length was measured from the centre of the headtube to the centre of the seattube, not along the actual tube itself. Great link nonetheless.
Quote from: Paradoxium on June 30, 2010, 02:53:00 PMI always thought tt length was measured from the centre of the headtube to the centre of the seattube, not along the actual tube itself. Great link nonetheless. That`s what I thought.
Quote from: surfer_atomico on July 16, 2010, 04:20:20 AMQuote from: Paradoxium on June 30, 2010, 02:53:00 PMI always thought tt length was measured from the centre of the headtube to the centre of the seattube, not along the actual tube itself. Great link nonetheless. That`s what I thought. thats what it says....................
Scuffy, bike A would feel longer. KKmk, before you act like you know the answer, why don't you actually think before posting. A little lesson in geometry, and a 74 degree seat tube (steeper than 71 degree) and a 73 degree head tube (more laid back that 75) would make frame B's ht and st closer together.
Between centres across both latitude and longitude. Picture the centre of the seat tube from the bb to the top where you clamp it. Not just the middle across, but top to bottom as well. Reason being because the hta and sta vary from frame to frame. The difference is minimal anyways....