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29 votes
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Why are road bikes (not time trial bikes) used in many triathlons?

The OP linked 4 videos, the first 2 videos were long-course Ironman races, where time trial (TT) bikes were used, while the latter 2 videos were of short-course draft legal races where road bikes ...
Rider_X's user avatar
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23 votes
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Drafting in small triathlon

Almost all amateur triathlons are DRAFT ILLEGAL. This was originally because triathlon famously has its roots in finding out "who the best athlete is" (Ironman, specifically, was founded by a group ...
Josh Doebbert's user avatar
14 votes
Accepted

Will a triathlon bicycle (tri bike) improve my speed?

TL;DR: It depends. Using my own data on BestBikeSplit, the rough answer is that switching from a road bike to a tri bike will likely improve your time. Even though Ironman Nice is a hillier course, ...
Ealhmund's user avatar
  • 2,055
7 votes

What are the geometric differences between a bicycle with aerobars (aka tribars) set up for touring (or long-distance) and one set up for speed?

A general geometry difference between the two distinctions is a bicycle set up for speed (an aerodynamic triathlon or time trial bike frame) typically has a steeper seat tube angle (more upright) this ...
Ted Hohl's user avatar
  • 6,437
7 votes

Why are road bikes (not time trial bikes) used in many triathlons?

Triathlon and time trial bikes are quite expensive and not wonderful to ride on open courses, hills, and in groups (in other words, general cycling). So, if you're not so serious about triathlons ...
Paul H's user avatar
  • 4,152
7 votes

Hire road bike for one day for race (never ridden one before)?

In your first tri , you’ll have all sorts of new things to concentrate on, I don’t think an unusual bike should be one of them. When I’ve seen people ride road bikes for the first time, it’s the ...
Swifty's user avatar
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7 votes

Will a triathlon bicycle (tri bike) improve my speed?

Triathlon-specific bicycles are generally significantly more aerodynamic than UCI-legal road bicycles. They're specifically designed to be aerodynamic and sacrifice controllability, maneuverability, ...
Andrew Henle's user avatar
  • 10.7k
6 votes

Will a triathlon bicycle (tri bike) improve my speed?

A tri bike would help, but it might not offer the best bang for your buck. Your body has a bigger aerodynamic impact than your bike, and putting it in an aero position, with aero bars, delivers a lot ...
Adam Rice's user avatar
  • 30.1k
5 votes

What are the geometric differences between a bicycle with aerobars (aka tribars) set up for touring (or long-distance) and one set up for speed?

The usage of aerobars is slightly different between competition and long distance: in a TT or tri setup, you're using the aerobars to maximise speed, and will set up the rest of the bike for a very ...
Chris H's user avatar
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5 votes

Will a triathlon bicycle (tri bike) improve my speed?

Depends on: speed and wind conditions closely related: elevation profile your weight (for a 100kg cyclist a 1kg heavier bike has less of a negative impact than for a 60kg cyclist. But it’s tricky ...
Michael's user avatar
  • 28.3k
5 votes

Will a triathlon bicycle (tri bike) improve my speed?

As covered in some other answers, a time trial bike becomes more beneficial as the athlete gets stronger and more skilled. For an athlete that is in danger of missing the time cut, the benefit (if any)...
Andy P's user avatar
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4 votes
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How to mount TT shifters and TT brake levers together?

I can't tell for sure what's going on in that picture, but I think it's a modified older Vision lever that clamps on the OD rather than inside the bars, and then the shifter is just stuck out the end. ...
Nathan Knutson's user avatar
3 votes

Disc Wheel w/ rim brake to Disc Brakes?

Similar questions about converting bikes that lack disc mounts have been asked, but I'm not sure if there's a duplicate question on converting wheels. For a general wheel, the conversion process would ...
Weiwen Ng's user avatar
  • 32.9k
3 votes
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Dual gear cable setup for aerobars and handelbars

Almost all derailleurs are pulled by cables. To be able to operate one derailleur from either of two shifters, or one brake from two levers, you'll need some mechanism to split the cable. As always, ...
Weiwen Ng's user avatar
  • 32.9k
3 votes
Accepted

Is it possible to add a TT shifter to Di2 junction box?

Yes, of course, that's possible. You just plug the cables into the brifters. Peel the grip-covers forward and you'll see unused ports underneath. Those may be used for sprinter buttons or for climber ...
Carel's user avatar
  • 8,329
3 votes

What is the most effective way to upgrade my Cervelo S2?

Except for wheels, upgrading bike components of increased performance is not beneficial. You are the engine and only training will provide noticeable results. if you are riding less than 3K miles/year ...
Dwight J. Browne's user avatar
3 votes

What is the most effective way to upgrade my Cervelo S2?

To get faster times, your options are: Accelerate faster Cruise faster Decelerate faster To accelerate faster, reduce rotating weight and increase bike & component stiffness. Reducing non-...
Emyr's user avatar
  • 3,896
3 votes

Drafting in small triathlon

Even if your local triathlon is not USAT certified, it's likely that they follow the same general rules. The only way to be sure is to ask the race director (if they haven't already published their ...
Johnny's user avatar
  • 1,799
2 votes

How to mount TT shifters and TT brake levers together?

The brake levers look like Vision TriMax Aero Brake Levers -see picture. I found them on ebay. But couldn't find them on the vision website. They appear to have had the front part, marked in red cut ...
KeithWM's user avatar
  • 736
2 votes

Hire road bike for one day for race (never ridden one before)?

Yeah you can do this - if - your only goal is to finish the race and don't care where you place; and you don't mind being very uncomfortable and can accept a bit of danger from trying to ride a ...
Argenti Apparatus's user avatar
2 votes
Accepted

What Factors Should I Consider When Picking a Base Bar

You're going to need a lot of stuff to make this change. Bar end shifters for the ends of your aero bars. Bar end brake levers for the ends of your base bar. Base bar & aero bars or an integrated ...
alex's user avatar
  • 5,754
2 votes

Hire road bike for one day for race (never ridden one before)?

This isn't a good idea. The different riding position will likely make some combination of your back, arms, legs and neck sore for the first few hours of riding. It will take much longer than that ...
David Richerby's user avatar
2 votes

Hire road bike for one day for race (never ridden one before)?

Renting a bike to ride in a race is not a good idea. Rental agreements often include specific lines forbidding racing on the rented equipment. One example, Rapha's bike hire, expressly forbids it. ...
Alex Robertson's user avatar
2 votes
Accepted

Would like to identify a late 80s/early 90s lo-pro bicycle's manufacturer and tube type

The answer is definitely a Gardin TT pursuit frame. It has been independently verified. Thanks all! I learned a lot about Mississauga (Toronto) Canada-based Joe Gardin frames in the process.
M. Hernandez's user avatar
2 votes

Why are road bikes (not time trial bikes) used in many triathlons?

Another lesser point is money - sport costs, and a triathlon is essentially three distinct sports in one. The bike is an expensive item, and so making use of what you have is a perfectly good ...
Criggie's user avatar
  • 127k
2 votes

Why are road bikes (not time trial bikes) used in many triathlons?

In addition to Paul H's answer, there are several different triathlon distances from sprint to full iron man. In shorter races with hilly bike courses, or where there are many tight turns a regular ...
Argenti Apparatus's user avatar
2 votes

Buying Cervelo P2 vs P-Series

Disc vs. rim brakes have some trade-offs. The whole industry is moving to disc brakes, as you know. I think it can be said that disc brakes objectively perform better, but the gains for most riders in ...
Weiwen Ng's user avatar
  • 32.9k
2 votes

Buying Cervelo P2 vs P-Series

Cervélo advertises the P-Series to have less drag and weight than the P3 (and therefore P2). Which components/groupset are installed on the two bikes? What’s the overall cost? 1k$ is not that much of ...
Michael's user avatar
  • 28.3k
2 votes

Dual gear cable setup for aerobars and handelbars

Depends on your budget. Electronic shifting makes this problem relatively simple to solve, just throw money at it. You'll need multiple sets of shift buttons, all connected to the same controller. ...
Criggie's user avatar
  • 127k
2 votes

How to mount TT shifters and TT brake levers together?

Your photo looks like barcons or bar-end shifters with cyclocross interrupter brake levers. Another option might be mounting regular old brifters on the up-curved part of the bullhorn, so the brake ...
Criggie's user avatar
  • 127k

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