11/9/2022 0 Comments Vision trimax team os base bar![]() ![]() The fact that anyone pulls this off is a small miracle. However, the engineers of these bars must put an equal emphasis on compatibility with an insane array of drivetrains, brake systems, brake levers, frames, headsets, stems, battery and junction box placements… and probably more things I’m not even thinking of. ![]() The bars must fit a wide range of people. Slowtwitchers tend to think from a bike fitter’s lens. You can run a standard stem, too.īy the way, I’m going to point out our collective need to say ‘thank you’ to aerobar engineers across the globe. Note that the Si 013 doesn’t require that you ONLY run an ACR stem. The point is that the cables make their way through the stem and into the frame, without seeing the light of day. If it’s not obvious from the video, Vision makes road options and full integrated stem options for ACR, too. ![]() The video above shows the highlights of how ACR works. The cables route through this hole and into a ready-made stem, for a completely hidden look. There is a hole right in the center of the stem clamp area – this is what makes it work with the ACR system. The ACR family is interesting in that it gives you an integrated “system” without actually making the stem a permanent fixture. It works with any 31.8mm stem, including the Vision ACR system. What we have here is essentially a new version of the TFA, minus the stem. This bar has a very wide range of fit – but what if that’s just not enough for you? Or what if you’re just not sure, and want to take every precaution to be sure that your new aerobar investment will absolutely fit?Ĭhuck the stem. Vision offers aerobars with an integrated stem, such as the Metron TFA. Even if that air flows slightly smoother over a clean integrated stem – it’s heading right for a large, turbulent human body with moving legs. It might lead to tiny improvements in aerodynamics, but this is an utterly insignificant issue for 99% of the buying public. Why bother with the integrated stem at all? It’s an aesthetic thing. If an aerobar has an integrated stem, but builds in massive amounts of adjustability elsewhere for aero extensions and pads, you’re probably just fine. We’re more concerned with the specifics of the aerobar pads and extensions. For tri bikes, there’s a lot more going on. For a road bike, the stem IS your reach adjustment mechanism. However, that’s a reductionist view that doesn’t quite apply to triathlon bikes. If the handlebars are too far away, install a shorter stem. If the handlebars are too close, install a longer stem. Stems are an important tool for properly fitting a bicycle to the rider. This is a source of great controversy and heated debate. If it’s not self-explanatory, bars like this are made as a single piece, with the stem molded, cast, or welded right in. One of those products, in particular, has been an interesting category for Vision: aerobars with an integrated stem. Vision was at the tip of the spear, with products such as their full integrated aerobars (including an integrated stem), their mini ‘crab claw’ brake levers, and their mini aerobars for road bikes and draft-legal triathlons. I remember seeing their bars being used in route to countless victories by Team CSC in the ProTour circuit. I speak from experience as an early adopter of their products, starting with their early-generation clip-ons in the early 2000’s. Vision is a perennial name in the aerobar game. ![]()
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