BikeMax

I use a sealant to mend most punctures (made by Vittoria in an aerosol) if I flat in a race. Beloki - I think if you watch that it is pretty clear that the tub was ripped off by the fall and not the cause of the fall. Tub or clincher he was going down IMO. If you flat a clincher on a fast descent or in a corner, that tyre will be off the rim fast.

Tempting, but I bet my Cannondale is cheaper to run... (and less likely to be ridden by somebody else)

Update.. For any of you looking at getting a power meter - we have a great deal coming up on the PT std hub built into an open pro wheel. This is a great solution at a good price. If you want more info then mail me directly at ; peter at bikemax.co.za

Marius - having seen that Tub I can tell you there is no chance of a repair. The casing is split on the sidewall. A tub can only be repaired if the inner tube has a small hole that can be patched like a normal puncture would be.

Peak Power (PPO or MAP) is the result of a ramped test of ever increasing power over time(there are several protocols) that lead to the peak power that is sustained for the last ramp being measured - this is where Marius' figure comes in. So that would correspond to power at VO2Max? Yes - with the caveat that VO2 max is actually reached.

Peak Power (PPO or MAP) is the result of a ramped test of ever increasing power over time(there are several protocols) that lead to the peak power that is sustained for the last ramp being measured - this is where Marius' figure comes in.

30 min power to weight is a function of threshold power (60 mins) - the %age of FTP would vary from rider to rider but could be around 107% A 17 year old rider Elite rider may well have a power to weight at threshold of around 4.5-5 w/kg and so 4.8 - 5.3 for 30 mins. This is really all rough estimates and needs to be treated as such - more info needed to be of any real use to you.

No worries

Read it - he has a good blog. You can start writing content for yours now - we are moving ahead with the site and will post content "post dated" Bruce' Blog...nice ring to it

No wonder you missed the break..

Bruce - that's a low blow at this time on a Monday.. Short answer; Quad IV - largest component - variable power efforts in a road race like this, accelerations etc to mark moves Quad III - recoveries from above while you were loafing in the bunch Quad II - Only one real climb that would see much of this and a few rollers Quad I - Sprint for the line Looks about right I reckon. Now get back to work...

Yes - of course (and a cyclist - or is that masochist) Check your mail - life just got harder

It will do - there was a post on CF abouyt this very recently where the guy could not understand why he was getting double the power readings Don't be wasting your training time with this - you have serious work to do

Yes it does - has a thing called an "accelerometer"

I bike is R4000 in SA and has some serious flaws; 1. Needs very regular calibration - as often as each ride. This means a ride up to 20 mph then a coast doen to zero in the position you are going to ride. 2. It has a fixed value for frontal area which means that it is not acurate and power will vary if in the drops, on the hoods, standing up etc etc 3. Because it estimates power based on wind speed it is dependent upon a good air flow - so riding in a bunch reduces it's effectiveness dramatically 4. It needs to remain level on the bars and this is proving tough due to road vibration 5. Rough roads cause drop outs and then high power spikes - this stufs up the Norm power value greatly When you can pick up a PT Std for not much more this is a much better, more accurate and reliable option. There will be some special deals on the PT std soon that will be worth looking out for.

Found this article; "So, what do we want? A wheel that is light and aero and sturdy and affordable. Simple. What exactly constitutes a wheel being ?aero?? The single most effective way to make a wheel aero is to increase the depth of the rim. Generally speaking, the deeper the rim, the more aerodynamic and the faster the wheel ? the fastest being the deepest rim of all ? a disc wheel. However, the shape of the rim is a critical component. Ideally, this shape of the rim should be oval or elliptical. Note that the only deep section wheels that legally can have that most aero shape are those made by Hed and Zipp since they both hold the patent which was originally Hed?s. In some cases, it may be a marginal difference but technically speaking, the wheels from these two manufacturers should always be faster than a similarly designed wheel (i.e, same rim depth, same number of spokes, etc) made by someone else. That?s not to say that other wheels aren?t fast. There is much debate whether one wheel is faster than another ? the Hed 3 wheel and the Nimble crosswind would be one instance. My best guess is that each wheel may be faster than the other in different conditions but the differences are probably not worth obsessing about for very long. Either would be a good choice if that is the type of wheel you are considering. The next way to make a wheel more aero is to reduce the number of spokes. Fewer spokes mean faster and lighter wheels but not without some compromise when it comes to the strength and lateral stiffness of the wheel. To be really fast, rim depth should be between 50-60 mm and spoke count should be between 16 and 24 spokes (or as low as 3 spokes in the case of composite spoke wheels). Hed makes even deeper sectioned rims that are 90 mm and are among the most aerodynamic wheels made ? only a disc is faster ? but with more rim depth and aerodynamics comes more susceptibility to crosswinds and handling issues, particularly for lighter riders"