Go Back  Bike Forums > Search Forums
Reload this Page >

Search Results

Notices
 
Search: Posts Made By: cpach
Showing results 1 to 50 of 1000
Search took 0.18 seconds.
05-11-21, 04:02 PM
Replies: 14
Views: 276
Posted By cpach

There's no way there's published specs on a cheap...

There's no way there's published specs on a cheap single wall rim like that, but I'd probably bring it up to about 80-90KGF ideally. Quality rims to whatever the rated max is, if unknown usually I do...
05-11-21, 03:58 PM
Replies: 4
Views: 178
Posted By cpach

You will need to put a 1.8mm spacer behind your...

You will need to put a 1.8mm spacer behind your cassette.
05-11-21, 01:12 PM
Replies: 18
Views: 343
Posted By cpach

I would recommend against this. The shop labor...

I would recommend against this. The shop labor costs to do this would probably eclipse the cost of the (kinda crappy) bike, and there are still major component shortages so it's possible your shop...
05-03-21, 09:38 PM
Replies: 13
Views: 391
Posted By cpach

I've had high success rates of very accurate...

I've had high success rates of very accurate cable actuated disc brake alignment (with one moving pad) by loosening the bolts just enough so it can move, and then completely removing the cable and...
04-27-21, 10:31 AM
Replies: 10
Views: 215
Posted By cpach

The tool is common in shops but probably not...

The tool is common in shops but probably not universal. I had to buy one at my last shop. I'll bet every Specialized dealer has one since they've specced Praxis so often.
04-26-21, 11:52 PM
Replies: 15
Views: 564
Posted By cpach

The solution is leverage, not an impact driver.

The solution is leverage, not an impact driver.
04-26-21, 11:47 PM
Replies: 10
Views: 215
Posted By cpach

First off--a lot of creaks riders assume are...

First off--a lot of creaks riders assume are from the BB aren't. For whatever reason everything sounds like its coming from there, and a ton of creaks will clock to crank movement because it's a...
04-25-21, 05:26 PM
Replies: 4
Views: 194
Posted By cpach

Some hubs have replaceable freehub bodies....

Some hubs have replaceable freehub bodies. Probably a stock Giant hub won't. You can use a NX Eagle or some SunRace cassettes with a 12 speed drivetrain on your existing freehub. Shimano doesn't make...
04-25-21, 02:31 PM
Replies: 16
Views: 558
Posted By cpach

Bring it to a professional mechanic in the box....

Bring it to a professional mechanic in the box. Specifically mention you're concerned about wheel failure. Pay them appropriate money. Enjoy your bike.
04-25-21, 09:18 AM
Replies: 16
Views: 558
Posted By cpach

Most direct to consumer stuff (with exceptions,...

Most direct to consumer stuff (with exceptions, like say Canyon) comes with pre assembly pretty similar to how bike shops receive bikes, which is to say they need professional assembly. Most decent...
04-25-21, 09:08 AM
Replies: 2
Views: 196
Posted By cpach

I'm pretty sure WTB states a 120kgf max for most...

I'm pretty sure WTB states a 120kgf max for most of their rims. Minimum is harder to state--when you deform a rim you are going to need to have uneven tension. Given this is a disc rim try to...
04-14-21, 07:40 AM
Replies: 2
Views: 216
Posted By cpach

Did you try adding more volume spacers in the air...

Did you try adding more volume spacers in the air can to make it more progressive? Also if it comes to it Sram might be willing to help you out to b change the damper tune — a retail shock probably...
04-06-21, 01:28 AM
Replies: 46
Views: 1,337
Posted By cpach

There's nothing intrinsic about tubeless tires...

There's nothing intrinsic about tubeless tires that will make them flat less often when used with a tube. They have a higher tolerance, stronger bead and usually some reinforcement in the sidewall,...
04-02-21, 09:02 PM
Replies: 9
Views: 365
Posted By cpach

No, they've fallen out of fashion (I personally...

No, they've fallen out of fashion (I personally don't like them either) and haven't been available past 10 speed. As mentioned, you have options with Di2.
04-02-21, 08:21 PM
Replies: 6
Views: 361
Posted By cpach

Generally, for 1x you usually size the chain over...

Generally, for 1x you usually size the chain over the largest cog and the chainring and add 4 links (instead of 2 for most multi chainring drivetrains), which is what I'd recommend in this case.
04-02-21, 08:13 PM
Replies: 12
Views: 604
Posted By cpach

Semi-obviously a good work stand. My personal...

Semi-obviously a good work stand. My personal favorite portable/non shop stand is the Feedback Sports Elite, but it's pricy. Park PCS-10 is what I had for like a decade personally and it's fine.
...
04-02-21, 01:01 AM
Replies: 38
Views: 1,191
Posted By cpach

It's what's so infuriating about it! Totally nice...

It's what's so infuriating about it! Totally nice bike, horrendous hub options, particularly given the stock wheels SUCKED. Had a customer with a hub flange literally exploding and cracked rim...
04-02-21, 12:55 AM
Replies: 34
Views: 1,147
Posted By cpach

The Ksyrium thing was mostly to bring the DS...

The Ksyrium thing was mostly to bring the DS flange out a little farther without hitting the cassette, particularly with the stupid zircal spokes. It relies on the hub shell to transmit torque....
03-30-21, 12:18 AM
Replies: 8
Views: 325
Posted By cpach

Basically it doesn't really matter whether or not...

Basically it doesn't really matter whether or not you can see threads, but if the end of the spoke isn't past the wall of the rim a portion of the nipple will be in tension and not compression and...
03-30-21, 12:15 AM
Replies: 12
Views: 389
Posted By cpach

That looks fine. Chainrings are worn when: -The...

That looks fine. Chainrings are worn when:
-The chain skips or
-They shift poorly.

If neither is true, leave well enough alone.
03-30-21, 12:13 AM
Replies: 11
Views: 416
Posted By cpach

Sun CR-18s really are a pretty good budget...

Sun CR-18s really are a pretty good budget choice, so if your budget is stretched that really is a reasonable suggestion (assuming you don't ever plan on running tubeless). I like Velocity a...
03-30-21, 12:00 AM
Replies: 2
Views: 156
Posted By cpach

Mechanic A is correct (assuming a 2x or 3x...

Mechanic A is correct (assuming a 2x or 3x system, 4 links would be correct for most 1x drivetrains). Different suspension designs have differing amounts of chain growth as they move through their...
03-29-21, 11:57 PM
Replies: 10
Views: 450
Posted By cpach

Man, I wouldn't advise you to get that. Also that...

Man, I wouldn't advise you to get that. Also that bike looks like its had a bunch of ride time. If it weren't for the stay damage, I would strongly advise you to ask them about what kind of service...
03-29-21, 11:50 PM
Replies: 3
Views: 266
Posted By cpach

I wouldn't go anything cheaper than a XCT,...

I wouldn't go anything cheaper than a XCT, they're pretty much the cheapest thing that attempts actual hydraulic dampening. If you want your bike to feel very meaningfully better, probably the best...
03-29-21, 11:39 PM
Replies: 38
Views: 1,191
Posted By cpach

As a professional bike mechanic I friggin hate...

As a professional bike mechanic I friggin hate QRs with disc breaks. They are way less consistent in axle positioning and create disc rub. Also they are less stiff and create rub. They are also...
03-29-21, 11:28 PM
Replies: 34
Views: 1,147
Posted By cpach

Go for it if you want, it's fun and almost...

Go for it if you want, it's fun and almost entirely harmless. My personal road bike has a radial/2x 28h rear wheel, mostly because it looks neat and it was fun. It has held up fine, despite the very...
03-23-21, 12:31 AM
Replies: 13
Views: 505
Posted By cpach

Ideally all the spokes on one side should have...

Ideally all the spokes on one side should have similar tension. Do you have a musical ear? Within a semitone is probably OK, though when I build wheels I shoot for tighter tolerance than that on...
03-23-21, 12:27 AM
Replies: 12
Views: 392
Posted By cpach

To convert a bike from threaded to threadless...

To convert a bike from threaded to threadless requires replacing the fork, and also is not likely to reduce wear.

Replacing with a new threaded headset isn't that difficult or expensive,...
03-23-21, 12:23 AM
Replies: 7
Views: 313
Posted By cpach

TBH this sounds like a profoundly bad idea. A...

TBH this sounds like a profoundly bad idea. A failure to the head tube is really likely to result in a crash.

I know Covid has messed everything up, but are there any bike co-ops in your area that...
03-18-21, 11:41 PM
Replies: 28
Views: 1,167
Posted By cpach

I'm all about the PBMA trying to get mechanics up...

I'm all about the PBMA trying to get mechanics up to some sort of consistent standards of professionalism.

As far as tune-ups--ever notice how there's no such thing on, say, a car? They might have...
03-17-21, 06:08 PM
Replies: 28
Views: 1,167
Posted By cpach

I'm relatively unfond of the term tune-up....

I'm relatively unfond of the term tune-up. Service should be appropriate to the needs of the rider and bike and should be charged fairly relative to the shop's labor rate. Any service package should...
03-17-21, 11:31 AM
Replies: 5
Views: 374
Posted By cpach

Without seeing it honestly that sounds fine.

Without seeing it honestly that sounds fine.
03-17-21, 11:27 AM
Replies: 16
Views: 544
Posted By cpach

Go ahead and get relatively wide tires; they'll...

Go ahead and get relatively wide tires; they'll do better offroad and aren't really slower offroad. Given typical options, this means probably 2"–2.3". Maybe go for some minor tread in the front and...
03-15-21, 02:12 PM
Replies: 14
Views: 585
Posted By cpach

What's your budget? As a pro mechanic, the nicer...

What's your budget? As a pro mechanic, the nicer portable Park stands are petty nice but I personally prefer Feedback Sports—even more stable and a faster clamp design.

At the mid end of price...
03-15-21, 12:44 PM
Replies: 8
Views: 266
Posted By cpach

Then a Bb30A to Shimano conversion bb like I...

Then a Bb30A to Shimano conversion bb like I linked. Don't mess around with any kind of converting adapters, they tend to creak.
03-15-21, 11:09 AM
Replies: 8
Views: 266
Posted By cpach

If you already have a Shimano crank installed you...

If you already have a Shimano crank installed you can switch them out, otherwise you'll need a conversion bb like...
03-10-21, 01:56 AM
Replies: 9
Views: 1,289
Posted By cpach

I'd recommend tapping the threads (should be M6)...

I'd recommend tapping the threads (should be M6) and using the longest bolt that fits. While aluminum/magnesium in fork lowers is relatively soft, it's not particularly easy to strip them out. I...
03-10-21, 01:04 AM
Replies: 7
Views: 766
Posted By cpach

If you replace the rear wheel, the hub spacing is...

If you replace the rear wheel, the hub spacing is almost certainly 135mm, and it takes a freewheel. The rim size is 700c, or ERTO 622mm. That should be pretty much all you need. If you want, you can...
03-07-21, 01:10 AM
Replies: 6
Views: 390
Posted By cpach

You miss my point. The bearings in a conversion...

You miss my point. The bearings in a conversion BB are larger than the bearings in a BB386 BB because they accommodate a smaller spindle in the same size bore and will have better longevity and lower...
03-07-21, 01:03 AM
Replies: 4
Views: 335
Posted By cpach

Lower than optimal tensions increase the...

Lower than optimal tensions increase the probability of spoke failure, higher than optimal tension increase the probability of rim failure (at the spoke holes).

You should tension to the highest...
03-05-21, 08:55 PM
Replies: 10
Views: 522
Posted By cpach

You could just swap rings like I suggested.

You could just swap rings like I suggested.
03-05-21, 08:43 PM
Replies: 91
Views: 3,251
Posted By cpach

Congrats, you found your area's actual bike shop....

Congrats, you found your area's actual bike shop.

I would not work somewhere without conmon cutting tools.
03-05-21, 01:24 AM
Replies: 10
Views: 522
Posted By cpach

If the carbon crank has 10 speed rings you can...

If the carbon crank has 10 speed rings you can potentially have some shifting problems with an 11 speed drivetrain. This is technically out of spec though in practice it often works OK. Also, to be...
03-05-21, 01:15 AM
Replies: 6
Views: 390
Posted By cpach

Is it far out enough that the little retention...

Is it far out enough that the little retention tab fits in the spindle? If so it's probably reasonably within spec. The preload bolt shouldn't bottom out on the spindle because it needs room to do...
03-04-21, 11:31 PM
Replies: 91
Views: 3,251
Posted By cpach

I'm a pro mechanic but I never really minded...

I'm a pro mechanic but I never really minded paying for bike work before I started this career when I didn't have the experience or tooling to do something. These days I get annoyed when it's really...
03-02-21, 01:04 AM
Replies: 9
Views: 333
Posted By cpach

Lacing pattern has a minimal effect on the wheel,...

Lacing pattern has a minimal effect on the wheel, to be honest. To reduce stresses on the hub flange it's good to get the spokes nearly tangential. 2x is the convention for a 28h rear wheel and...
03-01-21, 10:34 PM
Replies: 7
Views: 331
Posted By cpach

No, a HTII crankset installed in a conversion...

No, a HTII crankset installed in a conversion BB30 BB should have the same (intended) chainline as if it were installed on a ISO threaded BB. BB30 has a narrow shell width of 68mm, which is the same...
02-28-21, 12:47 AM
Replies: 10
Views: 708
Posted By cpach

Yeah, that generation of Sram front shifting...

Yeah, that generation of Sram front shifting isn't the best. If you switch to better chainrings (Praxis, or Shimano if you can find ones that will fit well) that'll do most of the work to make it...
02-27-21, 11:59 PM
Replies: 5
Views: 328
Posted By cpach

I would recommend not worrying about it too much.

I would recommend not worrying about it too much.
02-27-21, 12:53 AM
Replies: 5
Views: 319
Posted By cpach

Enduro MAX are intended for suspension pivots and...

Enduro MAX are intended for suspension pivots and are not particularly low drag, so I'm not super surprised. Enduro is generally fine if not the absolute tightest tolerance. Also not unlikely to be...
Showing results 1 to 50 of 1000
 


 
Forum Jump

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.