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Fitting Your Bike Are you confused about how you should fit a bike to your particular body dimensions? Have you been reading, found the terms Merxx or French Fit, and don’t know what you need? Every style of riding is different- in how you fit the bike to you, and the sizing of the bike itself. It’s more than just measuring your height, reach and inseam. With the help of Bike Fitting, you’ll be able to find the right fit for your frame size, style of riding, and your particular dimensions. Here ya’ go…..the location for everything fit related.

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Old 06-11-14, 01:05 PM   #1
Roadie1
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Question About Leg Length

I have always ridden a road bike but at times more seriously than at others. This is one of my more serious times and my age and the amount I am out of shape is starting to rear its ugly head and I need advice from the group.

I am 6'2" tall and weigh 220 lbs. I have a leg length discrepancy of approx 3/4", my right leg is longer than my left. My hips are rotated (left hip rearward) and my left tibia and fibula are shorter than my right amounting to the discrepancy.

I am riding a 60cm c - c road bike with traditional geometry. I have my saddle set at 81cm from the center of the bottom bracket to the top of the saddle. I arrived at this figure by standing in my socks against a wall and placing a book firmly between my legs and then measuring. When I am riding I consciously drop my right heel during my pedal strokes to try to mitigate in part the leg length discrepancy. I also have a 1/8" shim inserted between my cleat and the sole of my left road shoe.

I am noticing as I am doing my longer rides that I am riding more on my right cheek as if my longer right leg is pushing my hips across my saddle which is probably the case.

The question I have is how should I be setting my saddle height? Is the 81cm figure good or should I be setting it for my shorter left leg or my longer right leg or is there something else altogether than I need to be factoring into this. Any thoughts will be appreciated. Thanks.
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Old 06-11-14, 02:51 PM   #2
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I'd sure consult a pro fitter on this. One thing I wonder is if it might be possible to use different length cranks? When you use the heel-on-pedal method to measure saddle height, do you have a slight gap on one side and a slightly bent knee on the other?
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Old 06-11-14, 03:28 PM   #3
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In the world of skiing, boots cost anywhere from $800 up to $1500 and more for race boots and boot fitting is a specialized craft for which one goes to school. Those boot fitters deal with leg length discrepancies on a regular basis. I am in no way trained in this area but I know that issues such as yours are dealt with successfully on a regular basis by trained people. A basic bike and generic bike fit will do for most people but when there are physiological issues and when distances get longer, professional help is called for. A good bike fit is the difference between pleasant riding and much pain. Find the best bike fitter in your area. The bike shops which sponsor racing teams where you live will know who that person is. Good luck.
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Old 06-11-14, 03:28 PM   #4
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Something else that may be of interest is the American Classic Seatpost, which allows saddle tilting side-to-side, and which they say can be used to mitigate leg length discrepancies.

AC|SEATPOST

Universal Cycles -- American Classic Alphatype Seatpost
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Old 06-11-14, 03:33 PM   #5
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Adding a Brompton SAP, saddle adapter pin, to a common tubular seat post will too , just less fancy. more utilitarian ..

and can be done to any diameter seat post.. it clamps on then runs horizontal places either forward or behind the post.

+a common saddle clip sitting o top.. (or Bromptons, w a smooth angle adjustment)

++++++
+ the adding to the pedal height , or running a shorter crank arm on one side.

Last edited by fietsbob; 06-11-14 at 03:40 PM.
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Old 06-11-14, 04:14 PM   #6
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Leather saddles (Brooks and others) will break in to your anatomy. All mine show that my hips are slightly twisted, and the right side sits deeper.
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Old 06-11-14, 07:20 PM   #7
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Quote:
Originally Posted by fietsbob View Post
Adding a Brompton SAP, saddle adapter pin, to a common tubular seat post will too , just less fancy. more utilitarian ..

and can be done to any diameter seat post.. it clamps on then runs horizontal places either forward or behind the post.

+a common saddle clip sitting o top.. (or Bromptons, w a smooth angle adjustment)

++++++
+ the adding to the pedal height , or running a shorter crank arm on one side.
Oh my, that Brompton SAP is the definition of a kludge, isn't it?!
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Old 06-12-14, 07:14 AM   #8
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Quote:
Oh my, that Brompton SAP is the definition of a kludge, isn't it?!

Works.. I use mine for extra seat post set back . in my old Stump-Jumper, now upright snow/ice bike..

OP with a taste for higher end roadie gear may not be the right customer .
then the $C note candy cane Am-Classic post may be suitable .

Last edited by fietsbob; 06-12-14 at 11:25 AM.
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Old 06-13-14, 06:47 PM   #9
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Roadie,
If you want to adress the symptom (functional leg length)... set seat height for longer leg and put spacers under the cleats to address the short leg. If you want to address the problem get a bike fit from some one who knows howto see the big picture... by setting the bike up to your physical abilities, helps you with posterior chain leaknesses, and pelvic malalignment.
Good Luck,
V.S.
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