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Search: Posts Made By: cpach
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03-16-24, 10:47 PM
Replies: 8
Views: 235
Posted By cpach

You can sometimes get good results building up...

You can sometimes get good results building up the rim bed on a standard clincher rim with relatively low tensions (<40psi). Its still usually a bad idea. Roads tubeless really, really needs to be...
03-10-24, 01:27 AM
Replies: 47
Views: 1,026
Posted By cpach

105 works totally fine, but you can feel the...

105 works totally fine, but you can feel the difference, particularly in shifter feel, as you step up to Ultegra, and another, more gentle, step up to Dura Ace. If you mix and match things, probably...
03-06-24, 02:30 AM
Replies: 5
Views: 184
Posted By cpach

Try it out and see. On my personal bike, I have a...

Try it out and see. On my personal bike, I have a Shimano Metrea front derailleur (I built it before GRX was available, and Metrea is designed around a 46/30 crank) and had to replace the cable...
03-06-24, 02:25 AM
Replies: 8
Views: 271
Posted By cpach

That really sucks. I wouldn't ride a suspension...

That really sucks. I wouldn't ride a suspension fork with bent dropouts. The fork lowers can be replaced without replacing the whole fork. It's around $250USD. It's a relatively easy service--should...
02-05-24, 06:01 PM
Replies: 16
Views: 525
Posted By cpach

Makes sense. I pretty exclusively use spokes with...

Makes sense. I pretty exclusively use spokes with either 2.0 or 2.13mm elbows and 2.0 threads for those reasons.

I don't really end up prioritizing weight often anyways, though my personal road...
02-05-24, 12:47 PM
Replies: 16
Views: 525
Posted By cpach

Related point — do you think there’s any...

Related point — do you think there’s any practical downside to thinner spokes rear ds? Tensile strength is fine on 1.5mm sections well past what you’d sanely need. I mostly use 1.8mm sections DS...
02-05-24, 01:35 AM
Replies: 13
Views: 524
Posted By cpach

For what it's worth, next time you work on your...

For what it's worth, next time you work on your brakes try extending the pistons, cleaning them, lubricating them with mineral oil, and then pressing them back in before bleeding. Double check that...
02-05-24, 01:27 AM
Replies: 16
Views: 525
Posted By cpach

For what it's worth, you've had me convinced and...

For what it's worth, you've had me convinced and this has been common practice for me for the last few years. Last nice wheel I built was rear wheel for loaded touring, 2.3/1.5/2.0 NDS 2.3/1.8/2.0 DS...
01-19-24, 12:00 AM
Replies: 13
Views: 389
Posted By cpach

While I usually specify some kind of butted...

While I usually specify some kind of butted spokes except when price is a major concern, your needs are really pretty conservative. You should be fine with straight gauge spokes. As mentioned above,...
01-18-24, 11:55 PM
Replies: 19
Views: 3,223
Posted By cpach

This is a specific case where it makes some...

This is a specific case where it makes some sense! Look into the Ratio Components kits. https://ratiotechnology.com/product/2x12sh-upgrade-kit/ would probably be the best option for you--the kits to...
01-18-24, 11:50 PM
Replies: 19
Views: 824
Posted By cpach

So essentially, no, you cannot swap to a...

So essentially, no, you cannot swap to a different freehub body without having the wheel entirely rebuilt around a new hub.

However, it's probably worth trying changing the lubricants used in the...
01-16-24, 12:53 AM
Replies: 30
Views: 1,386
Posted By cpach

Any reasonably name brand bearing will be fine,...

Any reasonably name brand bearing will be fine, but probably the best are bearing brands like NTN, SKF, NSK, ***, etc, many of which are manufactured in Japan. Ceramic mostly does not outperform high...
11-30-23, 11:53 AM
Replies: 74
Views: 3,025
Posted By cpach

I wouldn’t care. I like picky customers who are...

I wouldn’t care. I like picky customers who are sane—I can meet high standards and picky customers can give me an opportunity to impress—I just need to be really clear with my communication!

...
11-02-23, 11:04 PM
Replies: 23
Views: 1,252
Posted By cpach

That sounds fine. You're losing out,...

That sounds fine. You're losing out, theoretically, to wider rims at those tire widths, but it's probably no big deal, and obviously tubeless isn't an option if that was something you think you might...
10-24-23, 12:06 AM
Replies: 5
Views: 428
Posted By cpach

8mm drill extension. Screw that stupid blue knob.

8mm drill extension. Screw that stupid blue knob.
10-24-23, 12:03 AM
Replies: 9
Views: 493
Posted By cpach

I just have needle attachments on retail bike...

I just have needle attachments on retail bike lube bottles. No particular reason to be sparing here--I wipe down the whole rim when I'm done anyways. Works fine. But nice tools are certainly nice.
10-23-23, 11:58 PM
Replies: 17
Views: 586
Posted By cpach

You can put nearly any crank in a BSA bottom...

You can put nearly any crank in a BSA bottom bracket shell. Don't worry about reusing your existing bottom bracket. What's actually important to know is what the rest of the drivetrain is. Given the...
10-23-23, 11:52 PM
Replies: 62
Views: 3,116
Posted By cpach

Sucks you're not getting helped with this. Roll...

Sucks you're not getting helped with this. Roll this in my shop and I'd at least give a shot seeing if I could align the fork because it sounds fun. For help with stuff like this, honestly, find a...
10-23-23, 11:31 PM
Replies: 99
Views: 5,064
Posted By cpach

Also, I think one of the biggest frustrations is...

Also, I think one of the biggest frustrations is that the quality of service at shops is really inconsistent because none of the attempts (in the US at least) to regularly certify mechanics to some...
10-23-23, 11:15 PM
Replies: 37
Views: 1,646
Posted By cpach

Honestly, just find a bike shop that'll do this...

Honestly, just find a bike shop that'll do this work. I wouldn't mind doing this--customers can try for whatever riding position they like, I'm happy to make that happen so long as it's mechanically...
10-21-23, 12:46 AM
Replies: 99
Views: 5,064
Posted By cpach

This is mostly on point for me, although I really...

This is mostly on point for me, although I really endeavor to be pleasant, clear, and anti-elitist with customers. One of my favorite things is that, as one of very few mechanics in an area with a...
10-05-23, 05:27 PM
Replies: 21
Views: 586
Posted By cpach

I had a fitting on the DOT kit fail and spray...

I had a fitting on the DOT kit fail and spray fluidin my eye. Good thing for the eye wash station!
10-05-23, 03:34 PM
Replies: 21
Views: 586
Posted By cpach

Just get the Shimano oil, or if you'd prefer, the...

Just get the Shimano oil, or if you'd prefer, the Finish Line stuff. While other oils are likely to work, the total cost is pretty low and it's worth it not to play experiments with your braking...
09-30-23, 01:08 AM
Replies: 16
Views: 813
Posted By cpach

Pro mechanic here... There's absolutely no way...

Pro mechanic here...
There's absolutely no way you'll save money hand building wheels for basic rental coaster brake bikes. You should get reasonably competent at overhauling the hubs, truing...
09-30-23, 12:56 AM
Replies: 3
Views: 372
Posted By cpach

The most difficult part would be getting the...

The most difficult part would be getting the bearing out, since there's probably very little access to the back of the bearing. I would use a blind bearing extractor....
09-26-23, 07:39 PM
Replies: 45
Views: 1,817
Posted By cpach

Unless you are attached to keeping the frame...

Unless you are attached to keeping the frame original I’d see what local shops would charge to cold set the frame and align the dropouts/hanger. I’d probably charge about 30 mins labor for this, in...
09-16-23, 12:39 AM
Replies: 22
Views: 830
Posted By cpach

How remote are you going to be? I think people...

How remote are you going to be? I think people overthink this often, and hydraulic brakes are likely to be just fine. I'm a mechanic so maybe my comfort is somewhat higher, but I wouldn't hesitate to...
09-07-23, 05:28 PM
Replies: 19
Views: 709
Posted By cpach

85/hr, so about $7, given the retainers cost a...

85/hr, so about $7, given the retainers cost a couple dollars. If it’s vintage campy record or dura ace or whatever then, sure, loose bearings.
09-05-23, 08:35 PM
Replies: 19
Views: 709
Posted By cpach

The loose bearings will perform marginally better...

The loose bearings will perform marginally better anyways. I’ll do so in a pinch but having to charge fair labor rates I usually do the retainer because it’s the better value for my customers.
09-05-23, 07:08 PM
Replies: 12
Views: 726
Posted By cpach

Many local mechanics could likely do it,...

Many local mechanics could likely do it, particularly if it really just needs new dust wipers and oil (I service old Marzocchi forks like this semi regularly), but the expert on these is...
08-29-23, 08:49 AM
Replies: 14
Views: 407
Posted By cpach

OP has I-spec EV compatible brake levers. His...

OP has I-spec EV compatible brake levers. His shifters happen to be standard band mount.
08-29-23, 12:10 AM
Replies: 16
Views: 603
Posted By cpach

That sounds like a good deal, TBH. That's as nice...

That sounds like a good deal, TBH. That's as nice of a workhorse stand as any assuming you don't regularly work on fat bike wheels with locknut spacing >175mm.
08-29-23, 12:00 AM
Replies: 27
Views: 1,073
Posted By cpach

+1 on the Topeak Morph series. They're really...

+1 on the Topeak Morph series. They're really excellent if you're willing to carry something slightly bulkier/heavier to get a roadside pump that actually #(*$&ing works. And I'll bet you check your...
08-28-23, 11:53 PM
Replies: 14
Views: 407
Posted By cpach

The OP's mounting is normal. Current generation...

The OP's mounting is normal. Current generation I-Spec EV levers move the clamp location inboard on the lever body and are intended to mount the shifter in between the support bracket and the clamp....
08-28-23, 11:30 PM
Replies: 15
Views: 1,034
Posted By cpach

You will probably be just fine running only 5...

You will probably be just fine running only 5 bolts--the most likely problem is worse disc alignment. This is unlikely to kill you.

I might consider getting a slightly larger tap--#24 is 5.48mm...
08-28-23, 12:58 AM
Replies: 11
Views: 550
Posted By cpach

You can extend range with an adapter, but the...

You can extend range with an adapter, but the shifting does start to suffer the farther from spec you go, even if it does work. Given that you're touring on it, I'd recommend you just upgrade the...
08-28-23, 12:48 AM
Replies: 8
Views: 527
Posted By cpach

dedhed has good advise. Also don't overthink it....

dedhed has good advise. Also don't overthink it. If you can get a standalone bracket and have a hanger alignment tool you might be able to get slightly better performance with it, a alignment tool,...
08-28-23, 12:45 AM
Replies: 16
Views: 732
Posted By cpach

Straight pull spokes don't need the nipple heads...

Straight pull spokes don't need the nipple heads set, which saves a (short, fairly easy) step. They look (arguably) cool. I think the advantages regarding spoke fatigue are probably mostly irrelevant...
08-28-23, 12:34 AM
Replies: 8
Views: 349
Posted By cpach

I'd keep it all flat mount, personally. The...

I'd keep it all flat mount, personally. The Magura MT4 solution sounds pretty good, possibly coupled with premium pads/rotors. A higher powered option might be Hope RX4's with Shimano MTB levers.
08-18-23, 10:54 AM
Replies: 43
Views: 1,827
Posted By cpach

For really old bikes made in Britain. This is...

For really old bikes made in Britain. This is newer than that and should be BSA.

Honestly if you're interested in learning about bike restoration or simply would be entertained to do so, you...
08-17-23, 07:41 PM
Replies: 6
Views: 322
Posted By cpach

The first thing I’d do is replace the skewer with...

The first thing I’d do is replace the skewer with a closed cam design if you can’ haven’t already. It can be hard to get the skewer tight enough to work well with a disc otherwise.

Also check the...
08-14-23, 12:41 AM
Replies: 3
Views: 533
Posted By cpach

It should be effectively BB30. The 11 speed...

It should be effectively BB30. The 11 speed Red/eTap crankset came in either BB30 or GXP. If it's BB30, you really just need to replace the bearings themselves (6806), the rest of the hardware should...
08-14-23, 12:30 AM
Replies: 86
Views: 5,225
Posted By cpach

You might try asking bike shops if they have any...

You might try asking bike shops if they have any old TS2's they could sell you. Many have upgraded to more recent models in the last ten years or so. TBH my shop has two we don't need, but with...
08-12-23, 01:19 AM
Replies: 7
Views: 377
Posted By cpach

Assuming you indeed have a 1 1/8 standard...

Assuming you indeed have a 1 1/8 standard threaded headset, you have some OK options. I'd be remiss to not recommend a suspension corrected rigid fork if you're not actually going to be doing much...
08-12-23, 12:55 AM
Replies: 12
Views: 339
Posted By cpach

If the hubs are in good shape, they're nice...

If the hubs are in good shape, they're nice enough that you could just get them relaced to new rims, and in the process move to something lighter, though you'll still have modestly heavy hubs and...
08-12-23, 12:36 AM
Replies: 6
Views: 283
Posted By cpach

That should work. Is it possible you got a...

That should work. Is it possible you got a freehub body marketed for 11SP MTB? That's basically the same as 8/9/10sp, 11 speed road is wider by 1.8mm.
08-10-23, 12:24 AM
Replies: 28
Views: 1,065
Posted By cpach

This is not a thing with disc brakes. Why try to...

This is not a thing with disc brakes. Why try to offer advice on something you’re not knowledgeable about?
07-28-23, 11:13 PM
Replies: 89
Views: 3,086
Posted By cpach

The bickering about cross chaining is hilarious....

The bickering about cross chaining is hilarious. Regardless, this drivetrain shouldn't do that in this gear if everything is well adjusted.

I'd suspect hanger alignment(checked), bent derailleur...
07-28-23, 11:04 PM
Replies: 3
Views: 223
Posted By cpach

It's hard to diagnose from here, but it's...

It's hard to diagnose from here, but it's entirely possible there's a real issue with sticking in the master cylinder, in which case you should probably look at getting new brakes. Did the shop bleed...
07-28-23, 10:40 PM
Replies: 7
Views: 430
Posted By cpach

There is nothing that will intrinsically degrade...

There is nothing that will intrinsically degrade on a carbon composite structure during normal use. The material doesn't have a fatigue life, and the resin on the surface of the structure should...
Showing results 1 to 50 of 1000
 


 
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