Deep dish rims???

[astro]

Hi all,
Not sure if that's what you even call them, but I'm sure you know what I'm referring to. Zipp wheels use these.

What's the purpose of these? They seem to vary in size (the dish that is), etc. Are they better?

Cheers,

[m@]

Primarily aerodynamics; they're likely to be a little stronger than normal rims due to having shorter spokes, but are also heavier. Good for relatively flat conditions, bad in the hills where weight is more of a factor than aerodynamics.

[Kalgrm]

... mmmmm ... deep dish ..... pizza .....




Deep V or deep profile rims. As noted above, aerodynamics is the reason. Maybe looks too ....

Cheers,
Graeme

[colafreak]

Have to question the statement that they're "bad" in the hills.

A lot of mid-range (50mm) rims are pretty darn light.

They're also going to be a lot quicker down the other side of the hill...

[sogood]

It should be pointed out that deep dish is dangerous in windy condition. A blast of side wind will send the rider to the gutters, irrespective of how fast you can go in a straight line.

So no, deep dish is not all good. It needs to be chosen based on the prevailing condition.