About 1-1.5" difference for me, anything closer and I have way to much trouble keeping the front end down on the steep climbs.
Have you considered or tried using a longer stem maybe and see if that helps? I ask because my bike came w/ a 120mm/6 degree stem and riser (25.4mm) and I pretty much switched it out after a month or so to a 110mm/6 degree (31.8) stem and HB which actually brought the bars back more like 15-20mm - I suuffered from back cramps if you will when I did longer 2+ hour rides. In Dec I decided to throw back on the original HB & Stem to see what it was like - well on Fri I switched back to the 110 OS stem and bar and immediately felt the back pain come back that I had always experienced on longer rides.
Ross W. said:
Yeah, on my old bike with a flat bar I had about the same drop as a road bike.
That was not comfortable on my back and is why I have a new bike.
Even with the saddle and bar about even I still get back pain occasionally.
About 3" on my HT, and 3.5" on my FS , but I'm sure sag about evens it out. That said, I've never ridden either bike more than 16 1/2 hours. Only machine that's been used for a full 24 is my road bike, and there the drop is about 4" to the grip of the hoods. Any less and my back screams bloody murder.
My handlebars and seat are dead even. Never bothered me until I switched from an 80mm fork to a 100mm and now every now and then my back hurts. Sometimes it will be fine on a 6 hour ride, othertimes it hurst after 30 minutes. Go figure.
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