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Search: Posts Made By: HTupolev
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Forum: Road Cycling
01-25-22, 02:21 PM
Replies: 37
Views: 767
Posted By HTupolev

If I switch to a wide-range cassette with a...

If I switch to a wide-range cassette with a 11-13-15 progression instead of 1-tooth jumps, I can double the speed benefit of aerobars!
01-23-22, 01:51 AM
Replies: 1,594
Views: 326,329
Posted By HTupolev

Near Pilchuck. ...

Near Pilchuck.

https://i.imgur.com/TVFztGt.jpg

https://i.imgur.com/Vnhyved.jpg

https://i.imgur.com/fpEuOuz.jpg
Forum: Road Cycling
01-20-22, 02:01 PM
Replies: 18
Views: 548
Posted By HTupolev

As long as riding is reasonably practicable -...

As long as riding is reasonably practicable - gearing adequate for the gradient and not too technical - pedaling is generally much easier than pushing.
Forum: Road Cycling
01-20-22, 12:28 PM
Replies: 85
Views: 1,932
Posted By HTupolev

No. Weight loss is usually a net penalty on steep...

No. Weight loss is usually a net penalty on steep descents by reducing gravity assist, and short-term weight loss efforts typically cause significant loss of strength as well.


I suspect you...
01-19-22, 12:53 PM
Replies: 15
Views: 371
Posted By HTupolev

Assuming that the setup wasn't out of alignment...

Assuming that the setup wasn't out of alignment to begin with, I would guess that it's typically the tube and tire moving together. It hard to visualize why a tube would experience axial slippage by...
01-19-22, 12:26 PM
Replies: 19
Views: 485
Posted By HTupolev

What do you mean by this? Fewer cogs means larger...

What do you mean by this? Fewer cogs means larger gaps between gears, but that's not really dependent on how large the small chainring is.


I'm also not sure what you mean by this. Adding more...
Forum: Road Cycling
01-17-22, 02:37 PM
Replies: 56
Views: 1,630
Posted By HTupolev

The CdA of a human body does not drop to zero...

The CdA of a human body does not drop to zero when that person is hired to race professionally.
01-12-22, 11:36 PM
Replies: 216
Views: 6,193
Posted By HTupolev

Plenty of randonneuring bikes use skinny tires...

Plenty of randonneuring bikes use skinny tires and race gearing, and really wouldn't fit the criteria of a "gravel bike" very well at all.

For the randonneuring bikes that do fit the criteria of a...
01-11-22, 04:10 AM
Replies: 216
Views: 6,193
Posted By HTupolev

A fairly large part of the shift in sentiment has...

A fairly large part of the shift in sentiment has come from people realizing that a more versatile road bike doesn't need to make as dramatic compromises in road performance as they thought....
Forum: Road Cycling
01-09-22, 01:59 PM
Replies: 46
Views: 1,941
Posted By HTupolev

But that's in the small ring. :foo:

But that's in the small ring. :foo:
01-06-22, 05:14 PM
Replies: 45
Views: 1,726
Posted By HTupolev

Yes, it can be made to work reasonably well. ...

Yes, it can be made to work reasonably well.

Depending on the bike's hanger geometry, you may need to use an extender like a RoadLink DM to get it well-behaved. You'll also need to use a longer...
01-02-22, 12:47 PM
Replies: 56
Views: 1,354
Posted By HTupolev

I wasn't intending to "throw it at you" or imply...

I wasn't intending to "throw it at you" or imply that you believe something contrary to it. I brought it up because I know that you understand it, to use it as a tool to explain the part that you...
01-02-22, 12:11 PM
Replies: 56
Views: 1,354
Posted By HTupolev

It's not a mistake in the calculator, it's just a...

It's not a mistake in the calculator, it's just a consequence of how kinematics work. A simpler way to visualize this is not to compare 100 + 0 with 50 + 50, but with 0 + 100.

In 0 + 100, the...
01-01-22, 01:18 AM
Replies: 24
Views: 655
Posted By HTupolev

Needing constant re-adjustment of cranks and...

Needing constant re-adjustment of cranks and wheels isn't a sign of age, it's a sign that the parts are damaged and/or the mechanic doesn't know what they're doing.
12-30-21, 03:30 PM
Replies: 11
Views: 426
Posted By HTupolev

I know people who use it with 11-40 or 11-42...

I know people who use it with 11-40 or 11-42 cassettes. Achieving crisp shifting across the whole range can be more finicky than if you stay in-spec, and you end up pushing the derailleur's limits...
Forum: Road Cycling
12-29-21, 09:33 PM
Replies: 41
Views: 1,582
Posted By HTupolev

You're correct. I guess I can only count up to 11...

You're correct. I guess I can only count up to 11 when I'm jet-lagged.
Forum: Road Cycling
12-29-21, 07:59 PM
Replies: 41
Views: 1,582
Posted By HTupolev

Which Dura-Ace cassette did you change to? The...

Which Dura-Ace cassette did you change to? The new R9200 ones use "Hyperglide+" shift gate design, which has not trickled to 105 yet and could explain a difference in the feel of the shifts. If you...
Forum: Road Cycling
12-29-21, 10:46 AM
Replies: 41
Views: 1,582
Posted By HTupolev

Shimano's 10-speed road rear derailleurs from...

Shimano's 10-speed road rear derailleurs from 2015 onward (currently Tiagra 4700 and GRX400) use the same actuation as their 11-speed road, so the rear derailleur could stay. You would need to swap...
Forum: Road Cycling
12-28-21, 01:42 PM
Replies: 51
Views: 2,602
Posted By HTupolev

The rim width would almost never be a problem in...

The rim width would almost never be a problem in and of itself. Tires suitable for such wide rims might occasionally be a close call, but it really depends. A lot of road bikes from that era have...
12-17-21, 02:27 PM
Replies: 20
Views: 1,035
Posted By HTupolev

A bicycle mechanic whose ability to work with...

A bicycle mechanic whose ability to work with bar-end shifters is suspect should not be trusted with anything.
12-08-21, 03:04 AM
Replies: 81
Views: 2,398
Posted By HTupolev

That's basically how the Polar CS600 power meter...

That's basically how the Polar CS600 power meter worked. It used a sensor track the acoustic pitch of the upper run of the chain, and by combining this with user-provided information about the weight...
12-04-21, 10:47 PM
Replies: 86
Views: 3,236
Posted By HTupolev

Any tube can "take" any riding pressure, as long...

Any tube can "take" any riding pressure, as long as the pressure doesn't cause the tire to blow off the rim.
12-03-21, 02:21 AM
Replies: 221
Views: 5,306
Posted By HTupolev

If you have any general concern toward the safety...

If you have any general concern toward the safety of other humans, it puts a responsibility on you.

Frankly a lot of people who hitch a wheel without asking have flat-out bad judgement. Mostly...
11-26-21, 11:30 AM
Replies: 133
Views: 4,215
Posted By HTupolev

Track racers would absolutely get an advantage...

Track racers would absolutely get an advantage from variable gearing. The ubiquitous use of brakeless fixies is simply down to that being what track racing is, and what's required by the rules.
11-25-21, 03:34 AM
Replies: 133
Views: 4,215
Posted By HTupolev

Except when your pedaling form is actually...

Except when your pedaling form is actually causing the chain drive to disengage during the pedal stroke, there's no difference between fixed and freewheeling. And...

...if you're routinely...
Forum: Road Cycling
11-24-21, 02:28 AM
Replies: 138
Views: 6,049
Posted By HTupolev

:foo:

:foo:
11-17-21, 09:54 PM
Replies: 462
Views: 18,253
Posted By HTupolev

:foo:

:foo:
11-06-21, 12:28 PM
Replies: 9
Views: 309
Posted By HTupolev

I'm always reminded of the weapon carried by...

I'm always reminded of the weapon carried by Niska's enforcer in Firefly.

https://i.imgur.com/X1hzKTp.png


It shouldn't be a problem if the actuation feels too heavy, Campagnolo advertised the...
11-05-21, 09:43 PM
Replies: 594
Views: 15,721
Posted By HTupolev

People have been throwing extra sprockets at...

People have been throwing extra sprockets at their crank arms for just about as long as chain drives have been practical. For example, there was a patent by Charles Dubos in 1868 for putting multiple...
11-04-21, 01:26 PM
Replies: 39
Views: 7,609
Posted By HTupolev

The kinetic energy of a descending tandem can be...

The kinetic energy of a descending tandem can be well over double what it would be for a single, creating a big issue for thermal dissipation at the brake track. Consequently, it used to be common...
11-04-21, 12:35 PM
Replies: 462
Views: 18,253
Posted By HTupolev

I don't understand how you can be committed to a...

I don't understand how you can be committed to a cassette while having no idea which of several wildly different chainring arrangements you're going use. These are choices that influence the...
11-04-21, 11:48 AM
Replies: 462
Views: 18,253
Posted By HTupolev

I dunno. Depends on the rider, what sort of...

I dunno. Depends on the rider, what sort of riding they do, and what their regional road and gravel terrain is like. Also the specific cog counts of the cassette and the rider's shifting habits,...
11-04-21, 02:43 AM
Replies: 594
Views: 15,721
Posted By HTupolev

Tight gear spacing isn't about staying within a...

Tight gear spacing isn't about staying within a narrow cadence range. It's about being able to fine-tune your torque and cadence to whatever your legs currently want. You can leverage that to...
Replies: 21
Views: 1,645
Posted By HTupolev

The Strava "analysis" screen uses elapsed time,...

The Strava "analysis" screen uses elapsed time, so you can check how long it took to reach a distance from that. It's hard to get super-precise data from a quick eyeballing, but it's precise enough...
10-27-21, 12:10 PM
Replies: 158
Views: 4,896
Posted By HTupolev

A 32-bit integer can count the number of seconds...

A 32-bit integer can count the number of seconds since 1970 out to the year 2106. The issue with 2038 is that the standard 32-bit time_t data type is implemented as a signed integer, which allows it...
10-26-21, 12:55 PM
Replies: 462
Views: 18,253
Posted By HTupolev

Why not?

Why not?
10-25-21, 11:41 PM
Replies: 462
Views: 18,253
Posted By HTupolev

Yes, but this isn't analogous. Running largely...

Yes, but this isn't analogous. Running largely doesn't employ gearing, so the idea of maintaining power output while using a slower stride at higher force simply doesn't make any sense. In running,...
10-25-21, 02:18 PM
Replies: 462
Views: 18,253
Posted By HTupolev

Based on what you wrote below, I don't think you...

Based on what you wrote below, I don't think you understood the yellow.


You wouldn't need to. A 40rpm spread at 90rpm is comparable to a 26.7rpm spread at 60rpm, namely 46.7rpm to 73.3rpm. And...
10-25-21, 01:42 PM
Replies: 462
Views: 18,253
Posted By HTupolev

In this example (presumably assuming a typical...

In this example (presumably assuming a typical 700c road setup), 60->61rpm is somewhere around .36 mph, not .6mph. Also, gearing math requires consideration to proportionality: changing by 1rpm at...
10-25-21, 01:08 PM
Replies: 462
Views: 18,253
Posted By HTupolev

On what basis is it being assumed that...

On what basis is it being assumed that livedarklions lacks cadence variability? Preferring an abnormally low cadence doesn't necessarily imply a narrow range, just that the range is in a lower region...
10-25-21, 12:56 PM
Replies: 462
Views: 18,253
Posted By HTupolev

Maybe. It's not like I'm forced to use the...

Maybe.

It's not like I'm forced to use the interleaves; they're just there when I want tight shifts, which most of the time is in circumstances where a double-shift isn't clumsy to employ.
It's...
10-24-21, 06:02 PM
Replies: 1,594
Views: 326,329
Posted By HTupolev

https://i.imgur.com/3CMS9Og.jpg ...

https://i.imgur.com/3CMS9Og.jpg

https://i.imgur.com/0H5ttM2.jpg
10-22-21, 02:03 PM
Replies: 462
Views: 18,253
Posted By HTupolev

Not very. Pushing a bicycle up the sorts of hills...

Not very. Pushing a bicycle up the sorts of hills where gearing that low would actually be used, "walking speed" is usually very slow. It's very different from moving about unencumbered on flat...
10-19-21, 01:48 AM
Replies: 84
Views: 4,299
Posted By HTupolev

"Walking speed" is very different pushing a...

"Walking speed" is very different pushing a bicycle up steep double-track than unencumbered on flat ground.


There's nothing contradictory in wanting a 19" gear while also simultaneously wanting...
10-16-21, 02:24 AM
Replies: 50
Views: 2,792
Posted By HTupolev

Entry-level models from major brands are often...

Entry-level models from major brands are often aluminum, like the Checkpoint ALR or the Topstone Alloy. I think the distribution of frame material in gravel has a lot more to do with what market...
Forum: Road Cycling
10-15-21, 01:46 PM
Replies: 62
Views: 4,571
Posted By HTupolev

That's news to me.

That's news to me.
10-14-21, 04:28 PM
Replies: 36
Views: 793
Posted By HTupolev

The 11-40 in the GRX group is designed to pair...

The 11-40 in the GRX group is designed to pair with the RD-RX812, which is a 1x-targeted rear derailleur for 11-speed road pull. It does not use a mountain bike rear derailleur.

The RD-RX810...
10-14-21, 02:54 PM
Replies: 12
Views: 518
Posted By HTupolev

Are you using long-pull brake levers? V-brakes...

Are you using long-pull brake levers? V-brakes have very high mechanical advantage, so they should be used with levers that pull a lot of cable. Alternately, you can use a Problem Solver's Travel...
10-13-21, 11:28 PM
Replies: 158
Views: 4,896
Posted By HTupolev

Gearing linkages of greater complexity than a...

Gearing linkages of greater complexity than a crankset strapped to a wheel existed before the safety bicycle.
Forum: Road Cycling
10-12-21, 06:54 PM
Replies: 14
Views: 900
Posted By HTupolev

Not just 4700. Starting in 2015, any Shimano...

Not just 4700. Starting in 2015, any Shimano 10-speed road rear derailleurs match the new 11-speed road actuation. Currently that also includes the RD-RX400.
Showing results 1 to 50 of 1000
 


 
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