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What computer to buy(6 posts)

What computer to buyIcefrk13
Mar 12, 2002 9:47 AM
With my new bike I am looking at getting a new computer. I want cadence as one of the functions, I have full Ultegra componets with Campy pedals. What are the suggestions you all have, and does any one know if the Campy Ergo Brain will work with Ultegra componets?

Thanks
Matt
Altimeter function can be nice...PdxMark
Mar 12, 2002 10:35 AM
Others may have particular brand preferences, but knowing elevation gained is sometimes about as important for me as mileage. Of course, if you live & ride the flats exclusively, then it wouldn't be much use...
I like mine, but ...Humma Hah
Mar 12, 2002 3:30 PM
... it is important to go into altimetry knowing its limitations.

One of my functions at my new job is calibrating pressure altimeter systems (using a $30k Druck Air Data System). The avionics system we're calibrating can theoretically resolve as little as a 6-inch change, but in reality it has a hard time telling any better than 50-ft from one run to the next.

My Cat's Eye AT-100 can resolve 5 ft, but is sensitive to temperature, and may not come back to the same reading at the end of a loop, simply because it had not come to a uniform temperature when started. Exposure to direct sunlight can also cause it to read incorrectly. Below 23F, the internal thermometer can read no lower.

All pressure altimeters drift as local atmospheric pressure changes.

Depending on how it is mounted, the static port may read considerable dynamic pressure (airspeed) that makes the altimeter read low at high speed.

They work best to tell the height of particular big hills, when the climb time is short and the temperature relatively steady. On such climbs, the actual height of the hill is probably within 2x the resolution of the altimeter (in the case of the Cat's Eye, 10 ft). For long rides, the accumulated climbing indication is almost always somewhat higher than actual, maybe by 20% or so.

All that said, I love having an altimeter. Climbing on my cruiser is such a chore, I really like having a number to log at the end of the day, even if it is not perfect.
Thanks GuysIcefrk13
Mar 12, 2002 3:42 PM
Thanks Guys,
I currently have a Suunto Altamax watch that gives me taht info but I am going to take a look at the Computer any way since I do not like wearing my watch to ride in it is very large. Great for climbing though.

Thanks
re: What computer to buyOn the rivet
Mar 12, 2002 6:06 PM
The best computer is not made anymore. It was the Avocet 55 and it had the cadence along with what I think is a must have altimeter. They keep saying that they will reintroduce it...we'll see. Once you have the altimerer feature, you'll never want to be without. Nashbar has the Cateye altimeter on sale now for $69. Cateye is one of the best made computers there is.
re: What computer to buyweiwentg
Mar 13, 2002 5:02 AM
ErgoBrain won't work with Ultegra shifters. like the Flight Deck (which has more or less the same functions), ErgoBrain integrates into the levers. and you will need Ergo shifters for it to work.