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Profile Design Seat post on road bike
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 2015-03-17 5:27 AM |
 1 |  Subject: Profile Design Seat post on road bikeA few months ago I bought a new bike, a Principia Evolution road bike. The reason that I chose to buy a road bike instead of a TT, is that I wanted a more versatile bike. My plans was to mount a pair of aerobars on the bike, a maybe also another seat post like this one from Profile Design http://www.rosebikes.com/article/profile-fast-forward-al-seat-post/... Because when I take a trip by my self, I would like to use the aerobars, that's why I think such a seat post could help me get a better position on the bike. But when going on some trips with some of my friends, I would like to ride the bike in a normal way. Here goes my question: If I fit such a seat post to my bike, and i'm not using aerobars. Will that affect my positioning on the bike, in a negative way. Looking forward to get some help.  |
| 2015-03-17 5:40 AM in reply to: grabovac |
Pro 5892     , New Hampshire | Subject: RE: Profile Design Seat post on road bike My no so humble opinion... This is one of those things that should never been designed... It completely throughs off the balance of the bike. Instead of trying to fit you to the aero bars, buy aero bars that can be fitted to you. In a fitting session, the first parameter you establish is the riders position in relationship to the bottom bracket. Then you adjust everything from that central point. The FF seat post throughs that completely out the window. |
| 2015-03-17 6:16 AM in reply to: grabovac |
Champion 10668 Tacoma, Washington | Subject: RE: Profile Design Seat post on road bike I disagree with audiojan on where the positioning begins ON A TRI BIKE, but I totally agree that the FF post is an abomination that should never have existed. I went through all those "pioneering days", and while we attained some pretty aerodynamic positions on modified road bikes... well, to say that they were more than a handful to keep on the road would be the British gift of understatement. It got downright scary. Okay, so to your specific question -- having the FF post and no aero bars... You'll have one of two things happening: (1) Your reach to the bars will be so short, and your weight so far forward of the saddle, that you'll be basically sitting bolt-upright, or (2) you'll get a REALLY long stem to get the reach right, but your weight will still be far forward and your arms/hands will be holding you up. Neither one of these things is good. My suggestion is this: Set up your road riding position, then add a set of shortie aero bars that will help you get a little lower (more in line with your body in the same position as riding the drops), and much more narrow. That will get you 80-90% of the way there. Moving your weight forward on a bike that wasn't designed around that position does bad things.
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| 2015-03-17 7:56 PM in reply to: grabovac |
Veteran 572 Hudson Valley | Subject: RE: Profile Design Seat post on road bike I ran into a fit issue with a FF post. The road bike I mated the post to had a compact frame. The top tube sloped down from the head tube to the seat tube. When I tried to use the FF post on my other bike with a horizontal top tube, the post was too high. The post was inserted as far as it could go. This is a warning that the post might not have the vertical range for you depending on how low you normally have your seat post, and the geometry of the frame. I also noticed a slight difference in bike handling when riding FF post and drop bars. When the rear tire was slowly losing air on one ride, the bike was fishtailing. It felt unnerving. |
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