or only the wheels’ rims are eligible?
you wear rotating shoes ? cool
Is the question whether or not you should add the force of having momentum on a lever to the equation that Titanflexr uses here ?
http://forum.slowtwitch.com/cgi-bin/gforum.cgi?post=2748912#2748912
Probably, in that the same way that wheel aerodynamics are more important than wheel weight for anything except a hill climb time trial at an average speed of less than about fifteen miles an hour.
or only the wheels’ rims are eligible?
wheel’s rims are not eligible. rotating weight on a bike is a completely irrelevant distraction.
Shoe weight however, is a pretty big deal, but not because they rotate, because they do not rotate.
In fact, because they do not rotate, is why the weight is a big deal! You have to decelerate it, and accelerate it back up again with each step!
jack, i meant the cycling shoes, sorry
.
Shoe weight is important, but mainly because, even with big name brands, the weight of shoes can vary widely. Some of the lightest are made by bont and those can be about a pound or more lighter than a lot of other normal brands.
To give it some perspective, look at the price per weight savings on a S5 or a Venge, or any other carbon frame offered at different price points where the weight difference is the main selling point. You can pay thoundsands to save less weight than if you just paid attention to the weight of your shoes.
That said saddles and shoes are two places you should never sacrifice comfort for weight.
jack, i meant the cycling shoes, sorry
LOL!
I’m an idiot.
Well, I would say no cycling shoe weight doesn’t matter any extra. Jordan Rapp had some claim that pedal weight does matter more though, and that should apply to shoes though.
I can’t imagine HOW so maybe he will chime in with more detail, I am curious!
jack, i meant the cycling shoes, sorry
LOL!
I’m an idiot.
Well, I would say no cycling shoe weight doesn’t matter any extra. Jordan Rapp had some claim that pedal weight does matter more though, and that should apply to shoes though.
I can’t imagine HOW so maybe he will chime in with more detail, I am curious!
I’ve always found it odd that people don’t worry about cycling shoe weight more. Especially at the ProTour level where they are weight weenies about their frames even though they all weigh the same amount. Shoes are a weight that you can actually change at that level.
gotta be comfy too though when you bike that much. plus some guys get stuck with sponsor shoes.
Bont Zero’s: 170 grams per shoe, it is a Bont so it is ridiculous stiff and it is also heat moldable so you can get em comfy. The insoles are flimsy and the shoes are stiff so first long ride in them kinda hurt, but like a good firm saddle bones get used to it. My tiny feet bont A1’s with speedplay cleats (including the base adapter) weigh 270g per shoe. Pair of Sidi Ergo 3’s are 344 grams per shoe without cleats, porky AND expensive suckers.
I imagine sponsors do play a large role in the equation. Any shoe companies reading this: lightweight stiff shoes with adjustable soles for fit (like the giro arch supports).
In the Protour they worry about shoes a lot. Phinney, LA, Wiggins, DZ are four that have been obsessive about shoes. Aside from them shoes are one of the area where lots of Pro riders use rebadged favorites, they don’t get noticed as much but when everyone has phone with them the stars equipment gets noticed pretty quickly.
jack, i meant the cycling shoes, sorry
LOL!
I’m an idiot.
Well, I would say no cycling shoe weight doesn’t matter any extra. Jordan Rapp had some claim that pedal weight does matter more though, and that should apply to shoes though.
I can’t imagine HOW so maybe he will chime in with more detail, I am curious!
It was second hand (at best info). It came from an old Rocket7 presentation. I think from a SICI thing. I can’t find it. And since Rocket7 is now defunct… Well…
It is one of those things where you rarely pay any sort of price (except in the wallet) for the lighter weight, unlike with say wheels, so there’s no downside.
The Rocket7 “data” showed a gain of several watts, but as I said, I don’t know the veracity or the robustness of it.
FYI - Rocket7 is making shoes again.
jack, i meant the cycling shoes, sorry
LOL!
I’m an idiot.
Well, I would say no cycling shoe weight doesn’t matter any extra. Jordan Rapp had some claim that pedal weight does matter more though, and that should apply to shoes though.
I can’t imagine HOW so maybe he will chime in with more detail, I am curious!
It was second hand (at best info). It came from an old Rocket7 presentation. I think from a SICI thing. I can’t find it. And since Rocket7 is now defunct… Well…
It is one of those things where you rarely pay any sort of price (except in the wallet) for the lighter weight, unlike with say wheels, so there’s no downside.
The Rocket7 “data” showed a gain of several watts, but as I said, I don’t know the veracity or the robustness of it.
Here’s some of the data (Rocket7 is referencing work by Burke).
http://secure3.ntwebb.com/rocket7-com/cgi-bin/news.cfm
(it’s the post at the bottom)
It appears to reference this: http://www.active.com/cycling/Articles/The_effect_of_weight_on_speed
Personally I take a lot of this with a grain of salt. Burke/Rocket7 are equating all rotating weight, not factoring that rims/tires are much father from the axis of rotation than pedals/shoes are. When R7 includes statements like “Rotating mass increases exponentially as the RPM’s increase.” (ref. http://www.rocket7.com/#!road/c255o) it gives the engineer in me pause.
Don’t get me wrong, shoes/pedals are a great place to drop weight (the uppers of most shoes are way overbuilt IMO), but the “rotating weight” factor is pretty nominal.