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Search: Posts Made By: PeteHski
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03-21-22, 11:45 AM
Replies: 69
Views: 3,423
Posted By PeteHski

No, one of these:- ...

No, one of these:-

https://uk.wahoofitness.com/media/wysiwyg/cms/kickrbike/specs/fit-animation.mp4

Makes bike setup experiments very simple. I can change saddle setback on the fly in a couple...
03-21-22, 09:47 AM
Replies: 69
Views: 3,423
Posted By PeteHski

Too right. To double my speed on a 12% gradient...

Too right. To double my speed on a 12% gradient means going from 250W up to 500W. Now if I could only get that sort of power gain from a 5 mm saddle setback change. Or any change whatsoever.
03-21-22, 09:43 AM
Replies: 69
Views: 3,423
Posted By PeteHski

lol I've actually got a Wahoo Kickr Bike, so...

lol

I've actually got a Wahoo Kickr Bike, so it's very easy to do a full sweep of saddle fore/aft position, which I've done several times. It also simulates gradients up to 20%. My own...
03-20-22, 02:41 PM
Replies: 69
Views: 3,423
Posted By PeteHski

In contrast, for me, adjusting the saddle...

In contrast, for me, adjusting the saddle fore/aft by 5 mm can literally make no difference whatsoever to my seated speed up a 12% grade.
03-19-22, 04:07 AM
Replies: 69
Views: 3,423
Posted By PeteHski

I totally agree that there is NO definitive...

I totally agree that there is NO definitive scientific consensus to support any specific method of nailing down your saddle fore-aft position to the nearest mm. The balance method is probably the...
03-19-22, 03:59 AM
Replies: 69
Views: 3,423
Posted By PeteHski

Well if KOPS was a generic attempt at finding a...

Well if KOPS was a generic attempt at finding a rider's CofG balance point (which I don't believe it is) then you might as well just use the balance method anyway, because that intrinsically takes...
03-18-22, 04:33 PM
Replies: 69
Views: 3,423
Posted By PeteHski

I don't really understand your argument about...

I don't really understand your argument about femur length and KOPS. Neither does Keith Bontrager and it's probably fair to say he has researched it more than most. Quotes from his article linked...
03-17-22, 02:33 PM
Replies: 69
Views: 3,423
Posted By PeteHski

Coming back to the OP's original question, I just...

Coming back to the OP's original question, I just try to get a feeling of natural balance on my bike. When I'm riding along at tempo, do I feel like I'm propping myself up on my arms? Maybe I'm too...
03-17-22, 02:22 PM
Replies: 69
Views: 3,423
Posted By PeteHski

Exactly. Although the balance method at least...

Exactly. Although the balance method at least has an actual goal in mind (i.e. finding an individual's unique balance point) which intrinsically takes account of many of the variables involved e.g....
03-17-22, 10:58 AM
Replies: 69
Views: 3,423
Posted By PeteHski

KOPS is just an arbitrary point i.e. the bony...

KOPS is just an arbitrary point i.e. the bony protusion from your knee directly above the spindle. This arbitrary point might precisely position your saddle fore-aft, but it doesn't mean it will...
03-17-22, 10:51 AM
Replies: 69
Views: 3,423
Posted By PeteHski

What I'm saying is that someone with a large (or...

What I'm saying is that someone with a large (or just relatively fat) upper body build vs slight build will have much more upper body weight to support when leaning forward over the bike, regardless...
03-16-22, 05:00 PM
Replies: 69
Views: 3,423
Posted By PeteHski

Wouldn't your CofG location have far more to do...

Wouldn't your CofG location have far more to do with the weight of your upper body than anything to do with your femur length? I just don't see a meaningful correlation there. Even that bony...
03-16-22, 04:37 PM
Replies: 69
Views: 3,423
Posted By PeteHski

So let's forget about KOPS, because as you have...

So let's forget about KOPS, because as you have already rightly noted it's not even a well defined parameter you can actually measure. Which exact bit of your knee "needs" to be directly over the...
Showing results 1 to 13 of 13


 
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