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Old 05-03-21, 08:52 AM
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Sojodave
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Join Date: Apr 2015
Location: Utah
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Bikes: The Blurple Specialized Roubaix Pro

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Copying Fit From My Old Bike

I built up a Roubaix 2017 Pro frame over the winter. I got a bike fit on my old bike and I'm trying to copy the same measurements onto the new bike. Both bikes have a Specialized Power Expert saddle and I copied length from the hoods to the front of the saddle to 31.5". I have the exact same handlebar height and yet the bikes feel completely different. On my old bike, I have no pressure on my hands and feel super comfortable. On the Roubaix, I feel more pressure on my hands and shoulders. I'm 6'4" and both frames are 61cm. The reach on my old bike is 411 and the Roubaix is 396. I added a 130 stem to the Roubaix to get the same measurement to the end of the stem because the old bike has a 120 stem. The only thing I can figure out is the stack in the Roubaix is longer than my old bike. The stack on the Roubaix is 650 and my old bike is 617. Can someone help me figure out how to compensate for the difference in stack?
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