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road bike w/ aero bars vs. tri bike (Page 2)
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 2010-05-27 3:05 PM in reply to: #2886564 |
Member  27 |  Subject: RE: road bike w/ aero bars vs. tri bike |
| 2010-05-27 3:10 PM in reply to: #2886659 |
Extreme Veteran 495  Bluffton, SC | Subject: RE: road bike w/ aero bars vs. tri bike gregrueb - 2010-05-27 3:16 PM Maybe it's not the "purpose" of a tri bike, but it is a benefit. I have run after riding my roadie and run after riding my tri bike. I can assure you, it is easier to run coming off the tri bike. At least for me. This is because you are less aero on a road bike and it is harder to ride at the same speeds due to the wind drag factor. The angle of the seat tube may have slightly more effect on the hamstrings but not enough to feel the relief in the quads for the run. |
| 2010-05-27 3:12 PM in reply to: #2886842 |
Resident Curmudgeon 25290 The Road Back Gold member | Subject: RE: road bike w/ aero bars vs. tri bike hapa john - 2010-05-27 3:02 PM .. I picked up 2-3mph. Deal? Yes. Still ambitious and on the outer edge of possibility , but much more realistic than 4-5mph. gregrueb - 2010-05-27 3:05 PM Bear, You really are the resident curmudgeon. Duh! I mean, thanks! |
| 2010-05-27 3:58 PM in reply to: #2886564 |
Expert 2852  Pfafftown, NC | Subject: RE: road bike w/ aero bars vs. tri bike Hey what do I know? I've been riding again (1st time in 30yrs) for 2.5mos! Taken at face value (the Q), I don't see how it could make much difference, at all. A properly fit roadie with aero bars v. a tri bike? I just can't imgaine a small degree of rider angle and a small degree of aerodynamics would be earth shattering. How many miles we talkin' about riding? More realistically, is tri bike v. roadie with no aero bars. Even on the bulls, I'm in a more aero position on my tri bike (v. the hoods on my roadie). Gotta be worth "something". I started out, saying I'd ride my MTB for a while. But, I quickly decided I liked riding on the roads a lot more than I did trails. I bought a roadie and later a tri bike. But, I bought the tri bike ONLY because I just wanted it. If it was SLOWER....it would have been a tough decision, though! |
| 2010-05-27 4:40 PM in reply to: #2886564 |
Champion 7136 Knoxville area | Subject: RE: road bike w/ aero bars vs. tri bike I still don't get people's insatiable yearning to throw some Profile bars on an otherwise perfectly fine road bike. JUST RIDE IN YOUR DROPS... ITS WHAT THEY ARE FOR. Good lord... seriously... at the very least get a professional fitter to set you up a position if you insist on putting aerobars on your road bike. I don't know how many sprints I've been in and every time bike racks are filled with these road bikes with 9 spacers under the bars and some profile bars sitting on top of that... IT IS NOT AERODYNAMIC. Over long course stuff... maybe for the comfort aspect. But seriously...jeez. |
| 2010-05-27 4:45 PM in reply to: #2886564 |
Expert 774 | Subject: RE: road bike w/ aero bars vs. tri bike Whether riding on the drops or on aero bars with a roadie, the hip angle is going to be shallow and prevent the chest from breathing deeply, especially if you have more than 10% body fat. |
| 2010-05-27 4:53 PM in reply to: #2887108 |
Champion 9407 Montague Gold Mines, Nova Scotia | Subject: RE: road bike w/ aero bars vs. tri bike Leegoocrap - 2010-05-27 6:40 PM I still don't get people's insatiable yearning to throw some Profile bars on an otherwise perfectly fine road bike. JUST RIDE IN YOUR DROPS... ITS WHAT THEY ARE FOR. I race draft legal on occasion and put aerobars on my road bike when I do. I could just ride on my drops but I've tested it and I'm marginaly faster with the aerobars. Further, if I end up off the front (unlikely) or get dropped (more probable) I am more comfortable TTing whatever distance I have left in the aero bars.  Shane |
| 2010-05-27 8:06 PM in reply to: #2887138 |
Champion 7136 Knoxville area | Subject: RE: road bike w/ aero bars vs. tri bike gsmacleod - 2010-05-27 5:53 PM Leegoocrap - 2010-05-27 6:40 PM I still don't get people's insatiable yearning to throw some Profile bars on an otherwise perfectly fine road bike. JUST RIDE IN YOUR DROPS... ITS WHAT THEY ARE FOR. I race draft legal on occasion and put aerobars on my road bike when I do. I could just ride on my drops but I've tested it and I'm marginaly faster with the aerobars. Further, if I end up off the front (unlikely) or get dropped (more probable) I am more comfortable TTing whatever distance I have left in the aero bars. Shane I give you draft legal races. Heck, I'd run some in a draft legal (and if for some reason I ended up on my roadie for a 1/2 - full IM) myself, and I'm obviously not all that "for" them. Most people don't do Draft legal though. The big argument I have with clip on's (in general) is they make one of the best parts of riding a road bike (brifters) less effective... especially for a "marginal" rider. I mean... most people riding a TT bike can't stay down through a corner anyways... no need to make your road bike more dangerous for yourself and everyone else. |
| 2010-05-27 8:09 PM in reply to: #2887138 |
Master 2426 Central Indiana | Subject: RE: road bike w/ aero bars vs. tri bike gsmacleod - 2010-05-27 5:53 PM Leegoocrap - 2010-05-27 6:40 PM I still don't get people's insatiable yearning to throw some Profile bars on an otherwise perfectly fine road bike. JUST RIDE IN YOUR DROPS... ITS WHAT THEY ARE FOR. I race draft legal on occasion and put aerobars on my road bike when I do. I could just ride on my drops but I've tested it and I'm marginaly faster with the aerobars. Further, if I end up off the front (unlikely) or get dropped (more probable) I am more comfortable TTing whatever distance I have left in the aero bars. Shane ^^^^^ As LeMond demonstrated in winning that famous '89 TdF TT using the then-radical aerobar, and has been scientifically demonstrated many times since (inc. testing quoted earlier in this thread), riding the drops is considerably LESS aero than a reasonable position on clip-on aerobars. |
| 2010-05-27 8:13 PM in reply to: #2886564 |
Veteran 812 | Subject: RE: road bike w/ aero bars vs. tri bike bigrosie - In the races that I've done, I've seen people on tri bikes fly by me effortlessly when I have a good quality road bike (no aero bars). Is there really that much differrence in Tri bikes or are those riders really that much stronger than me? Probably, they're mostly just that much faster than you. newbz just came in 3rd in a race with a borrowed $400 road bike with no aerobars. http://www.beginnertriathlete.com/discussion/forums/thread-view.asp?tid=209749&posts=30&start=1 You can get a bit faster by moving to a properly fit TT bike, but if people are blowing past you, they're going to do it even if you're on a TT bike. |
| 2010-05-27 8:14 PM in reply to: #2887407 |
Champion 7136 Knoxville area | Subject: RE: road bike w/ aero bars vs. tri bike Oldteen - 2010-05-27 9:09 PM gsmacleod - 2010-05-27 5:53 PM Leegoocrap - 2010-05-27 6:40 PM I still don't get people's insatiable yearning to throw some Profile bars on an otherwise perfectly fine road bike. JUST RIDE IN YOUR DROPS... ITS WHAT THEY ARE FOR. I race draft legal on occasion and put aerobars on my road bike when I do. I could just ride on my drops but I've tested it and I'm marginaly faster with the aerobars. Further, if I end up off the front (unlikely) or get dropped (more probable) I am more comfortable TTing whatever distance I have left in the aero bars. Shane ^^^^^ As LeMond demonstrated in winning that famous '89 TdF TT using the then-radical aerobar, and has been scientifically demonstrated many times since (inc. testing quoted earlier in this thread), riding the drops is considerably LESS aero than a reasonable position on clip-on aerobars. That is not a good example. For one, Laurent Fignon was on pursuit bars... with a 6 foot ponytail flapping free in the wind. That had a considerable amount to do with drag (and his time) IN THAT race. Yes, LeMond's scott bars were a step up. He also did significant testing on them... he didn't just "throw some clip on's" on his roadie and win the tour. |
| 2010-05-28 9:08 AM in reply to: #2886564 |
Master 2404 Redlands, CA | Subject: RE: road bike w/ aero bars vs. tri bike Riding in the drops takes about 20 more watts than aerobars; I personally gain about 1 mph with aerobars on my roadie, but I have a very aggressive drop. I'm not sure I'll do it again, the last time I put on aero bars they tore up my carbon handlebars. |
| 2010-05-28 1:28 PM in reply to: #2886564 |
Master 2356 Westlake Village , Ca. | Subject: RE: road bike w/ aero bars vs. tri bike No one has also mentioned that the bikes themselves are more aero....TT vs a roadie. TT's are also a bit heavier. |
| 2010-05-28 2:21 PM in reply to: #2886773 |
Elite 3779 Ontario | Subject: RE: road bike w/ aero bars vs. tri bike strostertag - 2010-05-27 3:43 PM Agreed, I was just using the "how aero is aero" article posted earlier as my reference point. This was the data they used: Speedway data
Obviously this is a very controlled environment and doesn't mimic real world conditions but still gives a decent 10,000ft look at how the aero stuff works. Those are some sizeable difference in the amount of watts someone has to push between clip on bars and riding in the drops - I find it equally interesting that there was little benefit gained by riding the TT bike vs Road bike with clip on's. |
| 2010-05-28 2:27 PM in reply to: #2889173 |
Veteran 207 Charlotte, NC | Subject: RE: road bike w/ aero bars vs. tri bike Am I reading the chart above wrong? How come on the Tarmac with clip-ons switching from a road helmet to a TT helmet reduced the watts required by 7 but on the Transition bike switching helmets dropped the required watts by 33? It seems like those 2 numbers should be closer or am I misreading it.?.? |
| 2010-05-28 6:14 PM in reply to: #2889050 |
| 73 | Subject: RE: road bike w/ aero bars vs. tri bike Fastyellow - 2010-05-28 11:28 AM No one has also mentioned that the bikes themselves are more aero....TT vs a roadie. TT's are also a bit heavier. I did, but that's okay. I remember reading a study from M.I.T. that stated that an aero helmet gives more aero benefit than wheels so I didn't stress the aero frames as much. After digging it up again, it looks as though they are saying the frame is actually of more benefit than the wheels as well. Let's give an aero frame more credit then. The study |
| 2010-06-14 2:26 AM in reply to: #2889182 |
| Master 5557 , California | Subject: RE: road bike w/ aero bars vs. tri bike Wubbs - 2010-05-28 12:27 PM Am I reading the chart above wrong? How come on the Tarmac with clip-ons switching from a road helmet to a TT helmet reduced the watts required by 7 but on the Transition bike switching helmets dropped the required watts by 33? It seems like those 2 numbers should be closer or am I misreading it.?.? IF those numbers are accurate, it might be due to the position of the rider. On the TT bike the bars should be lower than the seat, making the airflow over the TT helmet correct. But on the road bike, even with clip-on aero bars you're more upright, causing you to look slightly down at the road. That means the tail of the helmet won't be quite lined up with your back. Or their data could be flawed... hard to tell  |
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