Triathlon - Do I run a computer on my Tri bike?

So, since I now own a dedicated tri bike (that I will use mostly only for actual events, along with some training rides to get my aero psition better), as well as my roadie (and an MTB, but that doesn't count), do I use a computer on it?

Pro: I can tell my speed and distance

Con: little bit of weight (not much at all), and a little bit of drag (ahain, not much, I would think)

It seems like a no brainer that I should use a computer, but am I missing something?

I don't have the answer to the above, and will add my own question as well - which computer with cadence are you folks using on your tri-bikes that is compatible with a trainer? (Meaning rear wheel sensing.) And are you having any cosmetic or other issues with the cable routing along the frame? (I ride a Cervelo which has a fat aerodynamic bar.)

I use a VDO C3DS wireless so I have the sensor mounted to the rear wheel and there are no wires. It has a cadence module you can get as well. Works great.

I see no reason to not have a computer. Most Tri bikes I see even on high level guys have them, why would you doubt it?

I

I see no reason to not have a computer. Most Tri bikes I see even on high level guys have them, why would you doubt it?

Like I said, I figured it was a no brainer, but thought maybe I was missing something

I use the Garmin Edge 305 and think it's a great choice. It's very versatile, no wires and even has a wheel magnet (so it still registers when you are on a trainer).

Also...for the aero advantage you mentioned above...my computer is mounted behind my profile aero bottle during races) so I think the aero hit is minimal.

Yeah, it's a no-brainer. Usually the computer goes in a place where the airflow is disturbed anyway (e.g. between your arms or on the stem), so the drag isn't much concern.

Get whatever computer fits your needs. I use the CatEye Strada Wired with Wired Cadence. It's cheap and gives me everything I need--that is, until I can afford a power meter.

I really miss my Mavic wintech. the sensor is in the skewer making it clean. However, to answer your question, yes you'll want a computer.