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competativecyclist.com do it and use the calculator
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Originally Posted by k3nho
who bails off a road bike by trying to straddle the top tube and land flat footed??
while this is good advice for a mtb, i don't think it is good advice for a road bike with classic geometry. this bad rule of thumb leads many to buy bikes that are waaay too small for them. I agree with both. |
It's tough being a monkey. My girlfriend is 6" shorter than me and we can wear the same pants (if I suck in
_____________ Same monkey-problem here - 6 feet tall, 29" pants inseam, and my upper bod is the size of someone 6'6". I like a 56 cm frame. |
Pubic bone height is the measurement you should use...not your ball sack drop.
More info from the bearers of all things logical, Grant Peterson and co: How to measure your Pubic Bone Height (PBH) 1. Stand in bare feet on a hard floor. 2. Put your feet 10 inches apart. 3. Hook the edge of a metal metric tape over a thin edge -- two rulers, or a thin hardcover book. 4. Pull the tape up hard against your pubic bone. We tell folks, "Try to lift yourself off the ground." 5. Have a friend take reading as you do this. PBH Man http://www.rivbike.com/gallery2/main...serialNumber=1 Do this twice, thrice, or a hundred times. As long as the tape is straight and the guy reading the number knows how to read a tape, you should record the highest of all the readings you get. Why not the average? Because you'll never pull past the bone, so you can't get a reading that's too high. It's really good to know your PBH, because from it you can determine saddle height (SH). Here's the formula: PBH - 10 to 10.5cm = SH* *from center of the crank to the top of the saddle. NOTE: if you're among the folks who are more comfortable with multiplication than you are with subtraction, here's a formula the formula you've been looking for your whole life long: PBH x 0.881= SH Are there ever any exceptions to the formula? Maybe, but they're rare. Now and then a tiny-footed woman will do better using a SH that's 11cm less than her PBH. And,*if you ride 180mm cranks,* you might factor that into it, too, and go with PBH minus 11 or 11.5. If you pedal in elevator shoes, you'll need the saddle higher, so a PBH minus 8 might be better. For the rest of us wearing shoes with normal thickness soles, PBH minus 10 to 10.5 is a good saddle height. Over and out! |
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