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Search: Posts Made By: HTupolev
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Forum: Road Cycling
08-21-19, 07:50 PM
Replies: 9
Views: 583
Posted By HTupolev

I do plenty of gravel on slicks. ...

I do plenty of gravel on slicks.

https://i.imgur.com/zb97QzG.jpg
08-21-19, 04:57 PM
Replies: 24
Views: 684
Posted By HTupolev

What's wrong with your gravel bike?

What's wrong with your gravel bike?
08-20-19, 10:55 PM
Replies: 11
Views: 346
Posted By HTupolev

LP-27. Looks like an older square-taper cartridge.

LP-27. Looks like an older square-taper cartridge.
08-20-19, 09:18 PM
Replies: 11
Views: 346
Posted By HTupolev

What's your overall intent with the build? ...

What's your overall intent with the build?


Where are you getting the "LB-27" from?


This will depend on the cranks. Different cranks position both the rings and crank arms in different...
08-20-19, 01:01 AM
Replies: 13
Views: 523
Posted By HTupolev

I hope the BB is salvageable, because these...

I hope the BB is salvageable, because these things cleaned up surprisingly well.

https://i.imgur.com/Tqdv2XR.jpg
Forum: Road Cycling
08-19-19, 11:50 PM
Replies: 31
Views: 1,055
Posted By HTupolev

Long ago, shifters were not indexed. Instead of...

Long ago, shifters were not indexed. Instead of having two positions, a front shifter would have a continuous range of motion. To shift, you moved the shifter until the derailleur bopped the chain to...
08-19-19, 09:55 PM
Replies: 22
Views: 606
Posted By HTupolev

While that's pretty serious... I guess it...

While that's pretty serious...

I guess it depends on financial situation, but $60 isn't a ton of money to try saving the core of a well-liked bicycle. If a capable builder were charging that...
Forum: Road Cycling
08-19-19, 01:43 PM
Replies: 14
Views: 519
Posted By HTupolev

Depends on the sort of resistances that you're...

Depends on the sort of resistances that you're overcoming.

For instance, the force that gravity exerts downwards on your body is essentially constant. If you try to overcome gravity at twice the...
08-19-19, 01:20 PM
Replies: 82
Views: 3,119
Posted By HTupolev

It is if you're bottomed out significantly past...

It is if you're bottomed out significantly past what you'd self-select for the intended terrain and effort level, which is usually the case when people are saying things like "just kind of use my...
08-19-19, 01:00 PM
Replies: 82
Views: 3,119
Posted By HTupolev

Whether it's hard on your knees depends on your...

Whether it's hard on your knees depends on your knees.

Mostly it's slow and fatiguing. Small gears can be for going slow, but they can also be for going fast when the going is slow.
08-19-19, 11:55 AM
Replies: 1,153
Views: 154,886
Posted By HTupolev

These pictures have the best thread.

These pictures have the best thread.
08-19-19, 01:21 AM
Replies: 6,522
Views: 1,945,376
Posted By HTupolev

In light of some recent rides having considerable...

In light of some recent rides having considerable sustained gradients...

https://i.imgur.com/EVSl72C.png

...I decided that I'd like a gear lower than 24-28 for the particularly steep spots. So...
08-18-19, 03:42 PM
Replies: 6
Views: 200
Posted By HTupolev

1 1/4" is nominally pretty much the same as 32mm....

1 1/4" is nominally pretty much the same as 32mm.

The wheel diameter for 700c is almost the same as 27" (only 8mm different), so 700c tubes and 27" tubes are basically the same thing.

Tubes are...
Forum: Road Cycling
08-18-19, 03:23 PM
Replies: 7
Views: 356
Posted By HTupolev

https://i.imgur.com/bOXPr8y.gif

https://i.imgur.com/bOXPr8y.gif
08-17-19, 07:10 PM
Replies: 1,153
Views: 154,886
Posted By HTupolev

These bridges might not be very good at being...

These bridges might not be very good at being bridges, but they make great bike stands.

https://i.imgur.com/NpM9t2U.jpg
08-17-19, 07:08 PM
Replies: 549
Views: 87,002
Posted By HTupolev

So this is pretty much what I did. ...

So this is pretty much what I did.

https://i.imgur.com/CS4ydUc.jpg

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

https://i.imgur.com/syoRDB5.jpg
Forum: Road Cycling
08-16-19, 08:43 PM
Replies: 91
Views: 10,097
Posted By HTupolev

Ironically, valve nuts most useful on Schrader...

Ironically, valve nuts most useful on Schrader valves since they require more force to get a quick-release pump chuck to seat, but most Schrader stems aren't threaded at the base and therefore can't...
08-16-19, 03:22 PM
Replies: 37
Views: 2,450
Posted By HTupolev

Trek's new Domane will change gravel cycling...

Trek's new Domane will change gravel cycling forever!
08-14-19, 11:29 PM
Replies: 13
Views: 523
Posted By HTupolev

I've thought about it. For the time being, I want...

I've thought about it. For the time being, I want to keep this relatively minimal... If I do put new wheels together, I might re-space the rear end and also switch to 700c.

The freewheel resisted...
08-14-19, 11:11 PM
Replies: 44
Views: 1,549
Posted By HTupolev

Effects of environmental conditions can be just...

Effects of environmental conditions can be just as dramatic. I've got two Sun M13II rims that each have about 1,500 miles on them, both ridden by myself over about the same span of time in the same...
Forum: Road Cycling
08-14-19, 12:15 PM
Replies: 5
Views: 651
Posted By HTupolev

You can also get used to getting used to it. If...

You can also get used to getting used to it. If you have a variety of wildly-different bikes that get used regularly, it stops feeling weird to switch between them.
08-14-19, 11:44 AM
Replies: 44
Views: 1,549
Posted By HTupolev

Not if it's used for rain riding in the PNW with...

Not if it's used for rain riding in the PNW with rim brakes.
08-14-19, 12:01 AM
Replies: 1,153
Views: 154,886
Posted By HTupolev

Pavement lips are just about the most aggressive...

Pavement lips are just about the most aggressive pinch sources out there, though.
08-13-19, 10:55 PM
Replies: 13
Views: 523
Posted By HTupolev

I worked on the rear wheel today. Despite...

I worked on the rear wheel today.

Despite the freewheel being seized, it was far from seized to the hub. With only a moderate tug on my big crescent wrench, it broke loose and spun right off.
...
Forum: Road Cycling
08-13-19, 10:44 PM
Replies: 23
Views: 800
Posted By HTupolev

Right, which is why Trek's bikes should really...

Right, which is why Trek's bikes should really come stock with 44-28 subcompacts. :)
08-13-19, 07:38 PM
Replies: 38
Views: 1,899
Posted By HTupolev

The crank arm "walks up" the taper with every...

The crank arm "walks up" the taper with every installation, even if it was torqued properly. This is a form of long-term wear for square-taper cranks. But, it typically takes a very large number of...
08-13-19, 02:47 PM
Replies: 44
Views: 1,549
Posted By HTupolev

It does happen. How fast it happens depends on...

It does happen. How fast it happens depends on how clean the rims and pads are, the particular rim and pad materials, the conditions you're riding in, and how much you're braking.

Drizzly weather...
08-13-19, 02:03 PM
Replies: 46
Views: 1,906
Posted By HTupolev

This has more to do with the particular...

This has more to do with the particular derailleur and how the drivetrain was set up than the dropout type.

I'm surprised that it would be a bother in your case, though. The Campagnolo...
08-12-19, 10:30 PM
Replies: 13
Views: 523
Posted By HTupolev

So it did turn out to be a new bike day. And it...

So it did turn out to be a new bike day. And it was a Nomade.

https://i.imgur.com/E4LepOb.jpg

Weighs just over 30 pounds as shown. Maybe I'll get it below the 30lb threshold by removing the...
08-12-19, 01:51 PM
Replies: 13
Views: 523
Posted By HTupolev

New bike day (maybe)!

So someone wants to get rid of a bike they got in the 1970s, and I'll probably end up picking it up this evening. I'm not sure what it is. It says Motobecane on it, and it definitely has a frame and...
08-11-19, 06:49 PM
Replies: 549
Views: 87,002
Posted By HTupolev

Purchase not yet made, but my plan as it stands: ...

Purchase not yet made, but my plan as it stands:

-Get a BSA ST BB that has a flangeless NDS cup, a few millimeters narrower than the current 118mm BB. (115mm IRD QB-75?)
-Get a 4mm BB spacer,...
08-11-19, 09:34 AM
Replies: 43
Views: 1,980
Posted By HTupolev

A lack of scratches doesn't mean that there's no...

A lack of scratches doesn't mean that there's no structural damage. It's not surprising that the fork blades would still look normal, they've likely got a much higher yield strength than the frame....
Forum: Road Cycling
08-11-19, 01:09 AM
Replies: 97
Views: 11,731
Posted By HTupolev

I tested a banana, but its gravitational and...

I tested a banana, but its gravitational and inertial behavior was consistent with purely positive masses.
08-10-19, 08:57 PM
Replies: 549
Views: 87,002
Posted By HTupolev

Got around to mounting the new cockpit pieces,...

Got around to mounting the new cockpit pieces, but haven't cabled it up yet...

https://i.imgur.com/F16djFm.jpg

Just came in the last couple days, new rear derailleur and cassette.
...
08-10-19, 06:15 PM
Replies: 150
Views: 8,864
Posted By HTupolev

But he didn't. He used fairly ordinary race...

But he didn't. He used fairly ordinary race gearing for the time, which had a much lower top-end than today's road race gearing.

And if we're talking about self-selected cadence, "used a big gear"...
08-10-19, 05:15 PM
Replies: 150
Views: 8,864
Posted By HTupolev

Not that I'd agree with 63rickert's overall...

Not that I'd agree with 63rickert's overall argument, but...

Eddy Merckx used a 52-14 gear in his hour record attempt, resulting in an average cadence of around 104rpm. He wasn't a masher.

He...
08-10-19, 05:07 PM
Replies: 38
Views: 1,899
Posted By HTupolev

They don't all use square taper. But, where...

They don't all use square taper.

But, where they do, it's a combination of cheapness, lack of track popularity limiting tech development, and the ability to tune q-factor.
Or, in the case of...
08-10-19, 12:06 PM
Replies: 84
Views: 3,516
Posted By HTupolev

A big blobby parasite hanging off the bike.

A big blobby parasite hanging off the bike.
08-09-19, 12:23 PM
Replies: 10
Views: 434
Posted By HTupolev

They offer comparable clearance to traditional...

They offer comparable clearance to traditional cantilevers while being (usually) easier setup due to fewer variables, plus no risk of a straddle locking up a tire. It's also easier to avoid judder...
Forum: Road Cycling
08-09-19, 02:03 AM
Replies: 10
Views: 483
Posted By HTupolev

Depends on your frame and your pedal stroke. A...

Depends on your frame and your pedal stroke. A simple test is to try it out. If everything is silent, then your clearance is probably sufficient. But if you hear a tick sound at the top of the pedal...
Forum: Road Cycling
08-08-19, 06:13 PM
Replies: 61
Views: 3,565
Posted By HTupolev

What's "correct position?" Level forearms in...

What's "correct position?"

Level forearms in the hoods is usually more aero than a similarly-low posture with extended arms in the drops, but the severe elbow bend also tends to require more...
08-08-19, 03:46 PM
Replies: 43
Views: 1,980
Posted By HTupolev

There definitely is not welding there. I have a...

There definitely is not welding there. I have a similar frame (a 2016 Emonda ALR), and the welds are visible and where you'd expect them to be.

Ripples like that on the bottom of the top and down...
Forum: Road Cycling
08-08-19, 03:25 PM
Replies: 6
Views: 308
Posted By HTupolev

Tubulars are very resilient to pinch flats, so...

Tubulars are very resilient to pinch flats, so they can be safely run at very low pressures on rough terrain. Before practical tubeless clinchers were introduced on mountain bikes, this was a huge...
Forum: Road Cycling
08-08-19, 12:39 AM
Replies: 95
Views: 5,649
Posted By HTupolev

There's no reason you can't stick sub-1:1 gears...

There's no reason you can't stick sub-1:1 gears on a road bike. I certainly would if I was climbing 5mph all day.
08-08-19, 12:35 AM
Replies: 41
Views: 2,968
Posted By HTupolev

Picking on a bike is usually uncalled for, but......

Picking on a bike is usually uncalled for, but...


They work fine, but they're quite heavy.


The biggest problem with freewheels is the length of unsupported axle between the drive-side...
Forum: Road Cycling
08-07-19, 06:14 PM
Replies: 95
Views: 5,649
Posted By HTupolev

That would imply two different speeds, not two...

That would imply two different speeds, not two different power outputs. Power is essentially force*cadence, so if force and cadence are the same, power is the same.
08-07-19, 01:50 AM
Replies: 11
Views: 723
Posted By HTupolev

"Butting" just means that the tube wall thickness...

"Butting" just means that the tube wall thickness is different in different parts of the tube. How much weight it "saves" depends on what the particular butting profile is and what you're comparing...
Forum: Road Cycling
08-07-19, 01:14 AM
Replies: 97
Views: 11,731
Posted By HTupolev

But is a trek bike as fast as a 90s $10k aero...

But is a trek bike as fast as a 90s $10k aero super bike?
08-06-19, 05:03 PM
Replies: 30
Views: 965
Posted By HTupolev

Not just a matter of MA. The long distance from...

Not just a matter of MA. The long distance from pivot to pad on single-pivot brakes results in lots of flex if the arms aren't made heavy and stiff (or very short, severely limiting clearance)....
Forum: Road Cycling
08-06-19, 04:38 PM
Replies: 95
Views: 5,649
Posted By HTupolev

Not really. With adequate gearing, you can choose...

Not really. With adequate gearing, you can choose exactly how hard or easy you want a climb to be.

And regardless of how easy or hard you're going, it's useful to avoid bottoming out the gearing....
Showing results 1 to 50 of 1000
 


 
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