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on a properly fitted bike, when looking at your front hub….

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on a properly fitted bike, when looking at your front hub….

Old 09-18-23, 11:08 AM
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Robvolz 
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on a properly fitted bike, when looking at your front hub….

My bike: 1975 Colnago super. Frame is my size. Seat post height seems right, knees not locked, good power, no pain.

stem is 120 cm reach

With your hands on the upper part of the bars, or even the brake hoods, look down to your front hub…..

-should the hub behind the handlebars?
-Should the handlebars block vision to the hub?
-should the hub appear in front of the handlebars?

What is ideal?

Thanks all
Robert
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Old 09-18-23, 12:45 PM
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What is ideal?
If you aren't having any issues, then any of those might be "ideal".

You are falling for a old adage that has a lot of popularity but really isn't how you should decide if something fits or whether you need to change stems.
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Old 09-18-23, 02:22 PM
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They used to say that the handlebar should block the view of the front hub when you're riding on the hoods. Maybe they still do.

I don't know how much value that advice has in general, but it's been true for me with bikes that fit.
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Old 09-18-23, 04:38 PM
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I've found that with the same forward lean and therefore hip angle and shoulder location, I can swing my arms in an arc and for a perhaps 6-8" distance, my comfort and performance varies very little. Conveniently, that is closely approximated by adding 1 cm of headset spacer or quill height to every 2 cm long horizontally I go with the stem. Figured this out 30 years ago. Huge help in bike fitting.

But, you can quickly see that a shorter, lower stem is going to place the bars back in relation to the front hub view while a long and higher stem will bring the bars forward relative to the hub's view. I've run both on the same bike. Low and close feels classic track/criterium/race. High and forward, TT, all day upwind comfort and a nice stretch going up hard hills. But no bells, whistles or podium spots happen when I nail the bars hiding the hub. That's (usually) just an intermediate position that works. (Usually because on some bikes the hidden hub happens at one of the extremes.)

Edit: being of "normal" proportions means more bikes will have the hidden hub happening with "ordinary" stems lengths and heights while the rest of one's fit is "good". I am an outlier and seeing the hub behind the bars is pretty normal on bikes set up right for me.

Last edited by 79pmooney; 09-18-23 at 04:44 PM.
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Old 09-19-23, 12:41 PM
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I find my hands getting numb on the pads. I thought my vintage leather gloves with the "no pad to speak of" were the culprit and tried some new specialized gloves with double padding, kind of like double stuffed Oreos.

Problem 1; new gloves are a slick material and hard to grip my mid-70s Bike Ribbon white bar wrap
Problem 2; now gripping harder because of frightened of losing bar grip. Last time that happened to me, my flaying about had me grab my front brake cable and that's why I have implants for front teeth.

I lowered my seat post a whisker, probably losing the optimal power stroke, but all of a sudden my hands felt better.

I see the hub behind the bars, (I see how that can be confusing).

OK, front to back, bars then hub.

My stem is pantographed "colnago" (oh the vanity) and didn't really want to change it, but I think 120 might be a tad too long.

Have you looked at Panto prices lately?? Silly. Nitto I go.

Thanks for the advise. I am aware we are all different and what works for one might not work for all.

Robert
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Old 09-19-23, 01:39 PM
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I find that padding only delays the inevitable result for a time if I'm using poor hand positions. And not for very long either. Conversely, less padding seems to help even when I am using poor hand positions. Maybe because it encourages me to change positions more often.

Since you say it's a old vintage bike then I'm assuming it's the old type brake levers that don't have a hand position. And likely you keep you hands on the top of the horizontal bar. A few things things might help there. Only wrap your fingers around the bar and don't let your palm rest on the bar. Especially don't let your wrist bend much if any at all. If your hands are in the drops or on the part of the tops running forward to the shift lever, then only rest the part of your palm just behind your thumb on the top of the bar.

Keeping a big bend in your elbow also helps if your bike fit is such for that. If your bike fits such that your arms are angled front of you and you are stretched out then straighter arms are okay. But anytime your arms are perpendicular to you and fairly straight going to the bars, then that's bad for lots of things as well as hand numbness.

For the most part, just make sure you don't bend your wrist backwards and don't put the rear half of your palm on the bar.

If you yourself are old too, then maybe your hand muscles are losing mass and getting weaker. It takes quite a while, but squeezing on those springy things to improve my grip seems to have helped me some. Being older and retired and not one to exercise everything I should I find through the years that I've gotten various aches and pains while riding when nothing else has changed. Exercising the muscle groups for that area, many times solves the issue without any bike changes.

Last edited by Iride01; 09-19-23 at 02:18 PM. Reason: spelling. Probably still plenty wrong
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Old 09-20-23, 07:53 PM
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A bogus fit "rule." Set the saddle height and setback for pedaling efficiency and balance over the feet when pushing down on the pedals. Set the handlebar reach and height to where your hands want to find the brake hoods when sitting at your preferred back angle, with slightly bent elbows. If you were to get a profile photo, you could form an angle at the shoulders from the back angle to the brake hoods. For most of us this angle is about 90 degrees.

Last edited by oldbobcat; 09-20-23 at 07:59 PM.
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Old 09-21-23, 09:32 PM
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The hub rule was in the drops. I don't know how you apply it if all bikes your size don't have the same front center.
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Old 09-21-23, 10:46 PM
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Originally Posted by ljsense
They used to say that the handlebar should block the view of the front hub when you're riding on the hoods...
I remember when I was on the hoods the hub view was blocked by my drops and when in the drops the hub view was behind the bars. As I get older and need a more comfortable ride the hub view is slowly creeping forward of the bars.

I know its not an exact science but some of the old rules used to hold true.

Like the top bar grazing your crotch when standing flat on the ground.

And your middle finger just touching the bars when your elbow is on the nose of your seat.

And the sound of your spokes having an even tone when holding a small stick to them. Equal in tone on each side of the front wheel and at the back a lower tone on the non-drive side.

In my book these things still have some importance on older bikes. I certainly have no idea what things hold true on newer bikes and their bailiwick...
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