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Search: Posts Made By: surak
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Forum: Road Cycling
03-18-24, 03:53 PM
Replies: 31
Views: 469
Posted By surak

Note that the Rule of 105 isn't a hard and fast...

Note that the Rule of 105 isn't a hard and fast rule, and that it's calculated based on the measured width of the tire, not stamped width. So a 32mm tire on that Roval's 21mm internal width rim may...
Forum: Road Cycling
03-08-24, 12:40 PM
Replies: 439
Views: 12,299
Posted By surak

What's a more likely scenario in road cycling: ...

What's a more likely scenario in road cycling: A) an impact causes tire to deflate, which could lead to tire tire unmounting from the rim and breaking as it hits pavement or B) impact causes rim to...
Forum: Road Cycling
03-07-24, 02:07 PM
Replies: 439
Views: 12,299
Posted By surak

I found this SlowTwitch article from 2023 between...

I found this SlowTwitch article from 2023 between Dan Empfield and Josh Poertner on hookless safety...
03-07-24, 12:36 PM
Replies: 9
Views: 331
Posted By surak

What sealant did you use? Not all sealant is any...

What sealant did you use? Not all sealant is any good. Personally I, and many others, have good experiences using Orange Seal. I've also fixed a number of other people's punctures using my Dynaplugs....
03-06-24, 05:58 PM
Replies: 191
Views: 5,495
Posted By surak

I was being rhetorical. If all we care about is...

I was being rhetorical. If all we care about is what's faster, why compare the 5k to the S TR? Already shown that BRR measures higher RR with tubes in a tubeless tire. If you agree that the S TR is...
03-06-24, 04:02 PM
Replies: 191
Views: 5,495
Posted By surak

OK, I messed that up, I should have written that...

OK, I messed that up, I should have written that the higher volume tire should have a wider contact patch, not larger. BRR's measured casing width of the GP 5K is also 2mm wider than than the S TR.
...
03-06-24, 02:47 PM
Replies: 191
Views: 5,495
Posted By surak

CRR is affected by contact patch. The larger...

CRR is affected by contact patch. The larger volume tire at same pressure has a larger contact patch.
03-06-24, 02:24 PM
Replies: 191
Views: 5,495
Posted By surak

"Rather similar" being 2mm taller measured height...

"Rather similar" being 2mm taller measured height on the 5000s. It's already shown that larger volume tires at the same pressure leads to lower measured RR. The 5000 is simply larger.

Seems like...
03-06-24, 01:57 PM
Replies: 191
Views: 5,495
Posted By surak

Except the GP 5K, being a different tire,...

Except the GP 5K, being a different tire, inflates to a different volume for the same nominal width than the S TR, so it really is comparing apples to oranges.

There actually are some anti-sealant...
03-05-24, 09:44 PM
Replies: 123
Views: 3,262
Posted By surak

Not sure how a lockring tool and a crescent...

Not sure how a lockring tool and a crescent wrench for centerlock rotors, the latter also used for rotor truing, or a Torx bit for 6-bolt, is asking a lot or even expected to be new to any home...
03-05-24, 07:40 PM
Replies: 191
Views: 5,495
Posted By surak

The technology to reach the 6.8 kg limit on pro...

The technology to reach the 6.8 kg limit on pro bikes was reached years ago, but pro teams trying to win bike races by being fastest to the finish line are purposely using heavier bikes because of...
03-05-24, 03:41 PM
Replies: 191
Views: 5,495
Posted By surak

Pro cycling's no longer obsessed with bike...

Pro cycling's no longer obsessed with bike weight, but seems that too many BFers are still slow on the uptake. Recommending anything with round tubes and shallow rims and thinking it'll make a...
02-29-24, 01:06 PM
Replies: 22
Views: 1,238
Posted By surak

If you want a Synapse w/ Tiagra, you can pick one...

If you want a Synapse w/ Tiagra, you can pick one up from REI.
https://www.rei.com/product/208188/cannondale-synapse-al-2-bike
02-28-24, 01:17 PM
Replies: 191
Views: 5,495
Posted By surak

Consider that the experts on Silca's Marginal...

Consider that the experts on Silca's Marginal Gains podcast estimated that modern equipment (clothing, helmet, bike) would have 15% less drag than 2014 Tour de France-winning Vincenzo Nibali's setup,...
Forum: Road Cycling
02-27-24, 11:23 AM
Replies: 439
Views: 12,299
Posted By surak

https://www.bicyclerollingresistance.com/specials/...

https://www.bicyclerollingresistance.com/specials/vittoria-air-liner#conclusion
02-26-24, 09:13 PM
Replies: 36
Views: 1,000
Posted By surak

Never had to do so much research on what brand...

Never had to do so much research on what brand brake pads to use with disc brakes.

Just sayin'. :rolleyes:
02-26-24, 08:22 PM
Replies: 36
Views: 1,000
Posted By surak

Good for you, but I have had to change from using...

Good for you, but I have had to change from using single to dual compound pads for my tandem because single Kool Stop salmon compound squealed like a mofo on the front. And it still stops like ass...
02-26-24, 03:43 PM
Replies: 25
Views: 624
Posted By surak

DOT fluid absorbs water over time. I've seen...

DOT fluid absorbs water over time. I've seen recommendations to bleed them twice a year, especially if they've been exposed to wetter conditions, but minimum of a year is the common guideline.

I...
Forum: Road Cycling
02-26-24, 01:26 PM
Replies: 32
Views: 877
Posted By surak

Except the reason is plain if you bothered to...

Except the reason is plain if you bothered to read the thread. My mistake for thinking that you posted because you wanted to understand the safety aspects of your wheels.
Forum: Road Cycling
02-26-24, 12:45 PM
Replies: 32
Views: 877
Posted By surak

Better check that you have that better reputable...

Better check that you have that better reputable build set up correctly then.

Enve wheel blowout - Weight Weenies thread (https://weightweenies.starbike.com/forum/viewtopic.php?f=132&t=174276)
02-23-24, 11:31 PM
Replies: 36
Views: 1,000
Posted By surak

I recently put new pads in my rain bike -- metal...

I recently put new pads in my rain bike -- metal pads for the front and resin for the rear. Metal tends to be stronger and fades less, but is louder with a tendency to squeal when wet. Organic is...
Forum: Road Cycling
02-14-24, 02:23 PM
Replies: 30
Views: 1,401
Posted By surak

I have a 2019 Roubaix, so 2 generations behind...

I have a 2019 Roubaix, so 2 generations behind the SL8. It has 11 speed Ultegra Di2 and cost less than that 105 mechanical SL8(!), so if I were to put myself in your shoes, it would be a tough...
Forum: Road Cycling
01-12-24, 12:09 AM
Replies: 22
Views: 675
Posted By surak

In my experience Castelli is for short people, at...

In my experience Castelli is for short people, at least their bottoms. I have one aero jersey (small) that fits exactly as the size chart indicates but two totally different-fitting bibs and tights...
01-02-24, 06:57 PM
Replies: 101
Views: 8,646
Posted By surak

Couple things to check on your Rouvy setup: ...

Couple things to check on your Rouvy setup:

Rouvy app is up-to-date
download the route beforehand, on weaker hardware stick to 540p or at most 720p video quality
in the settings, change...
12-19-23, 01:45 PM
Replies: 14
Views: 870
Posted By surak

It would help to know both your power stats from...

It would help to know both your power stats from after that 90km ride.

I don't think there's anything severely wrong with the Rouvy simulation; it merely is unable to know the real aerodynamic...
12-11-23, 06:11 PM
Replies: 5
Views: 814
Posted By surak

This thread should be in...

This thread should be in https://www.bikeforums.net/indoor-stationary-cycling-forum/ .

Are you riding in TT or Just Ride mode? Just Ride mode allows for drafting, which would benefit the rider...
12-03-23, 04:27 PM
Replies: 10
Views: 1,586
Posted By surak

What challenge are you referring to in Rouvy?...

What challenge are you referring to in Rouvy? There is no active challenge involving Alpe du Huez that I'm aware of. Challenges are found at https://rouvy.com/me/challenges or...
Forum: Road Cycling
11-27-23, 06:56 PM
Replies: 76
Views: 2,826
Posted By surak

As Sy Reene pasted, Silca's usually is...

As Sy Reene pasted, Silca's usually is race-focused and gives you the estimated breakpoint pressure -- meaning the maximum pressure before rolling resistance is expected to increase. Note that going...
Forum: Commuting
11-27-23, 04:30 PM
Replies: 18
Views: 805
Posted By surak

I highly doubt anyone would take your sweaty...

I highly doubt anyone would take your sweaty clothes if you hung them on your bike. You can also try keeping desiccant in your locker, like Damp-Rid.
Forum: Road Cycling
11-26-23, 01:42 PM
Replies: 1,451
Views: 388,411
Posted By surak

For crosswind stability while still getting aero...

For crosswind stability while still getting aero benefits, you can reduce your front rim depth in relation to rear, make sure the tire is not wider than the rim width, and/or go with a wavy design...
11-14-23, 11:25 PM
Replies: 56
Views: 2,427
Posted By surak

I haven't had a flat since switching to tubeless....

I haven't had a flat since switching to tubeless. Sealant did its job the only noticeable time I had a puncture. Initially I carried bacon strips and a spare tube, neither of which I ever had to use....
11-02-23, 04:19 PM
Replies: 44
Views: 3,016
Posted By surak

If you're using a wax-based lube then you want to...

If you're using a wax-based lube then you want to get the chain as clean as possible because any grease left on is not going to let the lube adhere well to the chain. I have tried the mineral spirits...
Forum: Commuting
10-12-23, 11:26 AM
Replies: 11
Views: 1,005
Posted By surak

Digging a little into it, the chainring that...

Digging a little into it, the chainring that Priority puts on the Continuum Onyx is too large, and by all accounts on a different forum website that gets censored here on BF (that site sounds like...
Forum: Commuting
10-12-23, 10:17 AM
Replies: 11
Views: 1,005
Posted By surak

I'm in Seattle, have an Onyx, and am a relatively...

I'm in Seattle, have an Onyx, and am a relatively strong rider. I don't ride it much at all because I find that CVT's low gear inadequate (edit: mine is an older model with Nuvinci N330 hub, don't...
10-11-23, 11:46 PM
Replies: 28
Views: 1,704
Posted By surak

Pro teams aren't as smart as people want to give...

Pro teams aren't as smart as people want to give them credit for when it comes to new tech. I've both read and heard that some teams use (arguably less than) the bare minimum of sealant because...
10-11-23, 03:38 PM
Replies: 8
Views: 583
Posted By surak

The new Zwift Hub One might match your use-case,...

The new Zwift Hub One might match your use-case, although I don't know if 7 speed works with it: https://www.dcrainmaker.com/2023/10/zwift-hub-one-zwift-cog-clicks-review.html .

Alternatively get...
Forum: Road Cycling
10-07-23, 09:53 AM
Replies: 69
Views: 2,914
Posted By surak

Pinned flat pedals are definitely not for me on a...

Pinned flat pedals are definitely not for me on a road bike. Always have to hunt around for the right foot placement, need to be careful not to come off and get shin or calf gouged out. I use them...
Forum: Road Cycling
10-04-23, 10:03 AM
Replies: 29
Views: 1,031
Posted By surak

Do you regularly experience massive crosswinds...

Do you regularly experience massive crosswinds where you ride? If not, I'd get at least the WR45 for a front. The new ETRTO recommends at minimum a 29mm nominal tire for a 25mm internal width rim,...
10-02-23, 04:16 PM
Replies: 58
Views: 1,712
Posted By surak

Wouldn't think twice about it. Brands that fit me...

Wouldn't think twice about it. Brands that fit me well and feel comfortable above and below the waist tend to differ significantly. And that's not including accessories like gloves, warmers, and...
Forum: Road Cycling
10-02-23, 03:30 PM
Replies: 21,302
Views: 5,151,692
Posted By surak

3 pairs of Silca aero socks, tall version. Tried...

3 pairs of Silca aero socks, tall version. Tried one on and it felt great while not looking ridiculously aero weenie.

Also threw in some wax, drip wax, and e-bike/trainer version of their...
Forum: Road Cycling
09-29-23, 02:20 PM
Replies: 29
Views: 1,031
Posted By surak

Rim brakes don't use rotors.

Rim brakes don't use rotors.
Forum: Road Cycling
09-28-23, 09:21 AM
Replies: 29
Views: 1,031
Posted By surak

Completely irrelevant to this thread, which is...

Completely irrelevant to this thread, which is about upgrading a disc wheelset.
Forum: Road Cycling
09-27-23, 09:45 AM
Replies: 29
Views: 1,031
Posted By surak

AR46 is too narrow a front rim by modern...

AR46 is too narrow a front rim by modern standards. With an outer width of only 28mm, you're stuck with using a 25mm tire for optimal aero and to reduce crosswind effect. The Bontrager is better in...
Forum: Road Cycling
09-25-23, 11:49 AM
Replies: 113
Views: 5,403
Posted By surak

Tubeless pros: Will self-seal small...

Tubeless pros:

Will self-seal small punctures, reducing the frequency that you'll need to stop for a repair longer than waiting for the sealant to seal. With a good plug kit, can also easily deal...
Forum: Road Cycling
09-25-23, 11:23 AM
Replies: 70
Views: 6,025
Posted By surak

That looks fantastic! Giant for me seemed like a...

That looks fantastic! Giant for me seemed like a head vs. heart thing. Even though my first road bike was a Giant Contend SL Disc (which I bought on clearance for an absolute bargain) that took me on...
09-24-23, 01:41 PM
Replies: 12
Views: 595
Posted By surak

What sealant are you using? Lots of posts about...

What sealant are you using? Lots of posts about sidewall seepage using Stan's, usually resolved by switching to Orange Seal.
Forum: Road Cycling
09-20-23, 01:01 PM
Replies: 16
Views: 855
Posted By surak

Are you talking about these?...

Are you talking about these? https://us.huntbikewheels.com/products/hunt-30carbon-aero-disc-road-wheelset-1319g-30deep-27wide-999 on sale for $764.15.

If so, no way would I consider those anywhere...
Forum: Road Cycling
09-19-23, 11:32 PM
Replies: 19
Views: 1,735
Posted By surak

I've never needed one yet but my Dynaplugs have...

I've never needed one yet but my Dynaplugs have worked 2 for 2 on rides with other people who've punctured. I've heard mixed reviews on Stan's darts.
Forum: Road Cycling
09-19-23, 06:44 PM
Replies: 16
Views: 855
Posted By surak

Those Bontragers seem to be a solid choice. I...

Those Bontragers seem to be a solid choice. I only weigh 148 lbs and ride 50/56mm F/R Light Bicycle wheels with similar internal and external rim widths that only give me crosswind trouble when...
09-14-23, 04:06 PM
Replies: 166
Views: 6,529
Posted By surak

I had a slow commuter bike, actually 2 of them in...

I had a slow commuter bike, actually 2 of them in succession (won the nicer but still slow second bike in a raffle). They were so slow that I never rode them all the way to or from work because it...
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