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Search: Posts Made By: cpach
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07-30-22, 12:50 AM
Replies: 3
Views: 210
Posted By cpach

Double check the geometry of the frame before you...

Double check the geometry of the frame before you do the conversion. Often, geometry and fit for flat bars differs from that with drop bars. I'd get an idea of what the numbers would be for a...
07-30-22, 12:45 AM
Replies: 22
Views: 652
Posted By cpach

I like velox fine for non-tubeless-profile rims...

I like velox fine for non-tubeless-profile rims because it's frankly easier to apply. Also works great on single walled rims.

Legit tubeless tape on all rims that are tubeless compatible, tube or...
07-30-22, 12:39 AM
Replies: 11
Views: 547
Posted By cpach

My only experience was with UBI, which I thought...

My only experience was with UBI, which I thought was generally really good (I am now a full time professional mechanic). Their Intro to Mechanics course is, I understand, pretty mellow and makes few...
07-20-22, 01:08 AM
Replies: 2
Views: 148
Posted By cpach

There aren't even M8020/8120 levers--they use the...

There aren't even M8020/8120 levers--they use the same lever for 2 and 4 piston calipers. You'll be fine.
07-07-22, 01:33 AM
Replies: 6
Views: 234
Posted By cpach

Weight and price are competitive, and the rings...

Weight and price are competitive, and the rings shift well. I don't really like M30--it's basically oversized GXP, and it has the same problems where the bearings aren't loaded evenly, like in HTII...
07-07-22, 01:22 AM
Replies: 18
Views: 536
Posted By cpach

If this is what you really want, I'd probably...

If this is what you really want, I'd probably just advise you to not take any shortcuts and do a 46/30 crank with an 11-36 cassette (just out of spec) with the correct derailleurs. Larger cassette...
07-07-22, 01:07 AM
Replies: 38
Views: 991
Posted By cpach

I'll agree that this is both a kind of annoying...

I'll agree that this is both a kind of annoying design choice and is also not really that big of a deal. I liked the design of some older FSA cranks that were basically HTII cross compatible that...
06-23-22, 11:45 PM
Replies: 1
Views: 140
Posted By cpach

It doesn't.

It doesn't.
06-06-22, 11:15 PM
Replies: 24
Views: 515
Posted By cpach

Find a better bike shop, one that has a business...

Find a better bike shop, one that has a business that has a strong focus on service (which does include some shops with a lot of retail, also). Setting up road triples well can bit a little more...
06-06-22, 10:56 PM
Replies: 24
Views: 1,913
Posted By cpach

I did UBI before I ever worked professionally as...

I did UBI before I ever worked professionally as a mechanic--though I was a reasonably strong home mechanic (and occasional volunteer mechanic) before. If you're a career mechanic it's probably worth...
05-29-22, 12:06 AM
Replies: 35
Views: 1,077
Posted By cpach

1x drivetrains work fine, I wouldn't worry about...

1x drivetrains work fine, I wouldn't worry about anything you're mentioning. They somewhat obviously can't offer as close gearing with the same number of cogs as a 2x or 3x setup, but honestly in...
05-28-22, 11:53 PM
Replies: 8
Views: 239
Posted By cpach

Longer always if available--you have a ton of...

Longer always if available--you have a ton of room past ideal before anything bad happens. Even if you start having to force the last half turn or so to get ideal tension its not the end of the...
05-24-22, 11:51 PM
Replies: 32
Views: 874
Posted By cpach

If you haven't already, you'll also get more...

If you haven't already, you'll also get more absolute power with metallic compound pads than resin, at the expense of possibly more noise and less progressive modulation.
05-24-22, 11:47 PM
Replies: 6
Views: 253
Posted By cpach

Yeah, Shimano semi-annoyingly came out with...

Yeah, Shimano semi-annoyingly came out with another freehub spline pattern (like they did with the 10-speed-only hubs they briefly had). The cassette with fit on that or on a normal HG-11 driver. The...
05-15-22, 11:11 PM
Replies: 4
Views: 246
Posted By cpach

The key to tubeless is the tolerance between the...

The key to tubeless is the tolerance between the rim and tire, the presence of a bead shelf, and a depressed center channel for mounting. The rim profile won't be right and it will not hold up to...
05-15-22, 11:10 PM
Replies: 4
Views: 149
Posted By cpach

They're Tektro.

They're Tektro.
05-15-22, 11:08 PM
Replies: 6
Views: 188
Posted By cpach

If you want a universal mineral oil bleed kit, I...

If you want a universal mineral oil bleed kit, I really strongly prefer the Jagwire one: https://jagwire.com/products/tools/pro-mineral-oil-bleed-kit . I had a pretty much nearly new Park DOT kit...
05-05-22, 01:58 AM
Replies: 16
Views: 939
Posted By cpach

The answer is no, because there isn't one. Get...

The answer is no, because there isn't one. Get the correct whees.
05-05-22, 01:55 AM
Replies: 6
Views: 189
Posted By cpach

I think you need to go full custom if you want...

I think you need to go full custom if you want exactly what you want. Most framebuilders could sort this out. They might also offer to braze on canti bosses onto the stock fork and repaint--may or...
05-03-22, 12:42 AM
Replies: 50
Views: 1,441
Posted By cpach

I wouldn't worry about the rest of the bike...

I wouldn't worry about the rest of the bike overmuch. It really looks like a problem with the actual metalurgy of the chain.
05-01-22, 10:32 PM
Replies: 16
Views: 425
Posted By cpach

That looks potentially compromised. The mechanism...

That looks potentially compromised. The mechanism of a square edge into the middle of an extremely light frame also gives pause.Tap test isn't a bad idea but it its not an ultrasound, either. If you...
04-29-22, 11:43 PM
Replies: 123
Views: 41,557
Posted By cpach

Weight is unrelated to bore tolerance. Athletes...

Weight is unrelated to bore tolerance. Athletes are irrational regarding performance, but reasonable bore tolerance is fairly important if going faster is the goal, not to mention the maintenance...
04-28-22, 09:22 AM
Replies: 123
Views: 41,557
Posted By cpach

For reference, I'm not an engineer but I am a...

For reference, I'm not an engineer but I am a workinc mechanic. Sure, of course, but there are some seriously misplaced priorities when they engineer a 60g weight savings, or a half watt of drag,...
04-27-22, 11:05 PM
Replies: 123
Views: 41,557
Posted By cpach

Regardless of what you think of the dude, he's a...

Regardless of what you think of the dude, he's a good engineer and I'd trust his data and his assessments of appropriate tolerance. That said, he only gets the worst frames sent to him. His...
04-25-22, 03:28 PM
Replies: 57
Views: 2,145
Posted By cpach

Always seat post. Decent bikes have very thin...

Always seat post. Decent bikes have very thin walls in the center of the tubes. You can
04-14-22, 01:46 AM
Replies: 4
Views: 194
Posted By cpach

It's a PITA to adjust the seatpost height on...

It's a PITA to adjust the seatpost height on droppers. The most likely issue is that the post was raised at some point without feeding the cable housing with it very well so that the housing end cap...
04-12-22, 01:36 AM
Replies: 11
Views: 436
Posted By cpach

Shimano is one of the only contenders for...

Shimano is one of the only contenders for mid/high end cup and cone, and there's not really a drastically compelling reason to look elsewhere.
uess
Use any mid/high end Shimano hubs that match...
04-12-22, 01:22 AM
Replies: 19
Views: 509
Posted By cpach

When replacing a spoke I'll usually set it to...

When replacing a spoke I'll usually set it to match the tension of its paired spoke (by ear in my case, but no reason you can't do the same with a tension meter. In fact I do this when I have to use...
04-10-22, 01:18 AM
Replies: 6
Views: 401
Posted By cpach

https://wheelsmfg.com/derailleur-hanger-325.html ...

https://wheelsmfg.com/derailleur-hanger-325.html
...
04-09-22, 01:59 AM
Replies: 6
Views: 327
Posted By cpach

Are you talking about a cable actuated disc...

Are you talking about a cable actuated disc brake? If so, most of them only have one moving piston that presses the rotor into the fixed pad. If the brake worked well before, it's likely you need to...
03-26-22, 11:52 PM
Replies: 6
Views: 251
Posted By cpach

Don't ditch the Bontrager strips. They are needed...

Don't ditch the Bontrager strips. They are needed to make the rim conform to a tubeless rim profile on most Bontrager rims (though they're phasing this out it seems, especially at the high end)--they...
03-19-22, 01:01 AM
Replies: 43
Views: 883
Posted By cpach

To put things in perspective, I've worked...

To put things in perspective, I've worked professionally as a bike mechanics for like five years and I've never seen a metric loose ball bearing in a shop. 1/4" bearings are standard in rear hubs,...
03-19-22, 12:56 AM
Replies: 17
Views: 551
Posted By cpach

I do a lot of cleaning with just water, brushes,...

I do a lot of cleaning with just water, brushes, and dawn dish detergent. For what it's worth, Shimano's own training information (S-Tec videos, etc) mostly recommend cleaning derailleurs with dilute...
03-07-22, 09:56 PM
Replies: 18
Views: 738
Posted By cpach

The direct mount kickstands work well, but are...

The direct mount kickstands work well, but are prone to rattling loose. Make sure to install using thread locker and check the bolts every now and again.
02-28-22, 01:46 AM
Replies: 9
Views: 650
Posted By cpach

Don't mess around with the derailleur hack....

Don't mess around with the derailleur hack. There's more to compatibility than cable pull. Your current derailleur was never meant to clear that large a cog. A wolf link will make it clear but it...
02-28-22, 01:36 AM
Replies: 18
Views: 738
Posted By cpach

Stem Comparison Tool | yojimg.net...

Stem Comparison Tool | yojimg.net (http://yojimg.net/bike/web_tools/stem.php) is a nice tool for calculating the exact change in position a stem of different length or angle will make. I have a...
02-25-22, 01:19 AM
Replies: 32
Views: 1,240
Posted By cpach

The WheelsMFG cones are pretty nice honestly,...

The WheelsMFG cones are pretty nice honestly, roughly Ultegra quality, maybe not Dura Ace or Super Record quality, but certainly good enough.
02-25-22, 01:15 AM
Replies: 3
Views: 171
Posted By cpach

Do you have a nitrogen tank, fittings, and the...

Do you have a nitrogen tank, fittings, and the tooling to otherwise service a fox shock? Aside from skills/knowledge, the tooling is no joke.

I'd contact Fox. There's some chance they would still...
02-24-22, 11:45 PM
Replies: 4
Views: 312
Posted By cpach

The convenience of external vs internal nipples...

The convenience of external vs internal nipples is pretty obvious. If you do a good job building the wheel (eliminate twist buildup, set the spoke line, stress relieve, etc), carbon shouldn't move at...
02-23-22, 12:58 AM
Replies: 8
Views: 332
Posted By cpach

I'm not aware of anyone who makes that. Really,...

I'm not aware of anyone who makes that. Really, either 36h CL or 40h ISO would probably end up fine. If you're worried about spoke count, I'd probably just use a 40h ISO hub. I like centerlock, but...
02-04-22, 11:52 PM
Replies: 5
Views: 287
Posted By cpach

The biggest break in compatibility for Shimano is...

The biggest break in compatibility for Shimano is Servo-Wave vs everything else. Higher end brakes are servo-wave. Higher end brakes also use BH90 hose instead of BH59. Pairing your current levers...
02-03-22, 11:50 PM
Replies: 27
Views: 1,015
Posted By cpach

Sweet, I'm glad that helped. For this reason...

Sweet, I'm glad that helped. For this reason (among others) I'm glad that full hydraulic has become common for road/gravel, but HY/RD works well enough set up correctly that it's really worth getting...
02-03-22, 11:45 PM
Replies: 8
Views: 291
Posted By cpach

Nicer rotors may have a bit better alignment, but...

Nicer rotors may have a bit better alignment, but honestly it doesn't seem like a sure thing even at very high price points. It's normal-ish to need to do some minor rotor truing, unfortunately. I've...
02-03-22, 11:41 PM
Replies: 15
Views: 457
Posted By cpach

Brakes are important. I really like the Markhour...

Brakes are important. I really like the Markhour and recommend/install it often, but please don't hodge-podge a V brake onto a fork with only disc mounts. Look and I'm sure you'll find a decent fork...
02-02-22, 11:41 PM
Replies: 15
Views: 457
Posted By cpach

Jakeógiven what you want, I'd contact Marzocchi...

Jakeógiven what you want, I'd contact Marzocchi Mark. I'm a shop mechanic and have sent a handful of vintage forks his way for customers and the quality of his work is impeccable. It's likely he has...
01-27-22, 11:35 PM
Replies: 38
Views: 1,215
Posted By cpach

I also don't relate to your desire to shave this...

I also don't relate to your desire to shave this particular weight off that bike, but you did, in fact, seem to find exactly the solution intended for you, very specifically, so that's cool. I would...
01-27-22, 11:29 PM
Replies: 32
Views: 1,750
Posted By cpach

My similar-intentioned bike is 2x11 (with a...

My similar-intentioned bike is 2x11 (with a subcompact crank) because I love Shimano road hydraulic brakes, but if we don't need hydraulic brakes either has its merits. It's also a bit of a matter of...
01-27-22, 12:39 AM
Replies: 27
Views: 1,015
Posted By cpach

It sounds like there's too much fluid in the...

It sounds like there's too much fluid in the HY/RDs, which can be bled even though they need it far less frequently than other hydraulic systems.

That said, if you want to replace with full cable...
01-22-22, 11:32 PM
Replies: 8
Views: 1,308
Posted By cpach

What you see online may or may not be legit....

What you see online may or may not be legit. There are multiple supply lines in the bike industry. It's been frustrating working at a shop when things are available to consumers (often parts intended...
01-10-22, 01:32 AM
Replies: 11
Views: 746
Posted By cpach

You could try a grx fd and crankset with 48/31...

You could try a grx fd and crankset with 48/31 rings and see if that gets you adequate range. Radically changing your cassette would require drivetrain hacks and be a pain to switch to and fro with....
Showing results 1 to 50 of 1000
 


 
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