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Search: Posts Made By: jccaclimber
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08-10-22, 12:21 AM
Replies: 1
Views: 90
Posted By jccaclimber

It takes more torque to overcome static friction...

It takes more torque to overcome static friction and get them turning than it does to keep them turning. The fact that they did not move the second time implies you did not rise to the final torque.
08-06-22, 11:57 AM
Replies: 20
Views: 425
Posted By jccaclimber

While youíre at it you might as well reject the...

While youíre at it you might as well reject the results for not using instrumentation with a current NIST traceable calibration and operating in a temperature and humidity controlled environment.
Forum: Introductions
08-05-22, 01:59 PM
Replies: 25
Views: 511
Posted By jccaclimber

It might help and I highly doubt that it will...

It might help and I highly doubt that it will hurt. Do give it a bit of longer lasting lubricant after.
My guess is that you have a worn out spring or detent, but it is truly amazing what refreshing...
08-03-22, 03:59 PM
Replies: 6
Views: 232
Posted By jccaclimber

If they donít have it on their web page, donít...

If they donít have it on their web page, donít reply to your email, and you wonít call them or have your riding partner(s) call them, what options do you see even if they do rent bikes?

Also,...
07-30-22, 02:08 AM
Replies: 29
Views: 736
Posted By jccaclimber

Thin enough to still flow through the crack. ...

Thin enough to still flow through the crack.
Non drying so it will leave evidence.
Non corrosive in case the frame isnít toast.
As an added bonus, surface tension wonít keep it from getting...
Forum: Introductions
07-28-22, 01:14 AM
Replies: 25
Views: 511
Posted By jccaclimber

I misinterpreted, thatís even older than I was...

I misinterpreted, thatís even older than I was picturing. Thatís definitely a parts bin item, or equivalent. It could also just be a bent derailer hanger or something else similarly easy to fix. The...
Forum: Introductions
07-27-22, 05:35 PM
Replies: 25
Views: 511
Posted By jccaclimber

No shortage of bicycle co-OPís/bike kitchen sorts...

No shortage of bicycle co-OPís/bike kitchen sorts of places in SFBay. Many have fairly deep parts bins of older products and decent mechanical knowledge. One of them is likely the cheapest solution...
07-25-22, 08:19 PM
Replies: 26
Views: 782
Posted By jccaclimber

This is a reflection on that article, not you,...

This is a reflection on that article, not you, but that's article seems to have been written in a way to almost deliberately confuse the inexperienced. It shows (and links a reference to) a bolt on...
07-25-22, 04:08 PM
Replies: 23
Views: 561
Posted By jccaclimber

This sounds an awful lot like a stripped thread....

This sounds an awful lot like a stripped thread. TBD if itís on the frame, or more likely BB side.

I echo the above to try a different cup in that side.

Thread chasing wonít help. With some BB...
07-20-22, 02:59 AM
Replies: 44
Views: 996
Posted By jccaclimber

Itís the active ingredient in many of the rust...

Itís the active ingredient in many of the rust removers at the hardware store and will matte/darken the metal.
Sure, itíll start hydrogen embrittlement if you leave it in too long. I suppose it is...
07-18-22, 06:37 PM
Replies: 44
Views: 996
Posted By jccaclimber

Snarky replies aside, stripping to clean bare...

Snarky replies aside, stripping to clean bare metal and soaking in warm citric or phosphoric acid will probably give you a dull dark gray.
Proper black might involve calling other shops.
The...
07-17-22, 03:11 AM
Replies: 23
Views: 539
Posted By jccaclimber

The BB cups/shell are probably one of the less...

The BB cups/shell are probably one of the less torque critical joints on a bike. Iíd be much more worried about the fasteners securing the crank arm. That said, using the proper tool and process...
07-15-22, 01:05 AM
Replies: 50
Views: 1,303
Posted By jccaclimber

There was a nice long rant about that silly tool...

There was a nice long rant about that silly tool on here recently. In short, itís $6 on Amazon for the official Shimano version.
Just donít forget about the little plate that goes in the gap when...
07-14-22, 01:56 AM
Replies: 41
Views: 844
Posted By jccaclimber

Not very long if you drag the brakes them down...

Not very long if you drag the brakes them down hills or ride a lot in wet dirty conditions. Seemingly forever in clean, dry, level conditions.
On one of my bikes I go through a set of tires every...
07-14-22, 01:44 AM
Replies: 50
Views: 1,303
Posted By jccaclimber

I hesitate to disagree with the second service...

I hesitate to disagree with the second service manager, but I still firmly believe that this is the shopís fault, not Shimanoís. If it had fallen off 6 months and 2k miles from now we could debate...
07-13-22, 12:39 PM
Replies: 50
Views: 1,303
Posted By jccaclimber

1. This is the shopís fault. They owe you a new...

1. This is the shopís fault. They owe you a new crank. While I wouldnít mention it to them now, Iím not sure if Iíd let them work on my bike again, assuming that you have alternatives. While I...
07-10-22, 05:48 PM
Replies: 12
Views: 2,091
Posted By jccaclimber

Co-Motion lists 3 frame sizes for the Periscope...

Co-Motion lists 3 frame sizes for the Periscope on their web page. Even if they didnít, itís built in such a way that itís more like an adjustable crescent wrench than a fixed size.

Fit is...
07-04-22, 02:11 AM
Replies: 36
Views: 1,074
Posted By jccaclimber

Every day I browse the mechanics sub and am...

Every day I browse the mechanics sub and am always amazed that this thread, which has long since solved the OPís issue, continues to gain new posts. When ever will it die?

Based on other comments,...
06-30-22, 01:13 PM
Replies: 36
Views: 1,117
Posted By jccaclimber

My general rule for advising others on upgrades...

My general rule for advising others on upgrades is as follows:
1. If itís a toy, in budget, and you want it to try out, go buy it without regret. Just donít complain if that money does nothing...
06-29-22, 08:40 PM
Replies: 13
Views: 450
Posted By jccaclimber

The wax in that paper is just like the shipping...

The wax in that paper is just like the shipping grease on a new chain. It should be carefully removed with the solvent of your choice in an ultrasonic cleaner, then replaced with a less dirt...
06-27-22, 07:02 PM
Replies: 13
Views: 821
Posted By jccaclimber

So youíre trying to make a profit in a field you...

So youíre trying to make a profit in a field you arenít knowledgeable in and donít want to invest in time or proper tools?

There are plenty of ways to measure fasteners. You can use calipers for...
06-17-22, 10:28 PM
Replies: 29
Views: 618
Posted By jccaclimber

Iíll start with pointing out that even just an...

Iíll start with pointing out that even just an elbow rest suddenly coming loose at an unexpected time can be disastrous. That said, if you want to accept the risk here are a few thoughts:
1. It...
06-10-22, 06:07 PM
Replies: 15
Views: 4,336
Posted By jccaclimber

A little wear where the rib goes doesnít matter,...

A little wear where the rib goes doesnít matter, itís just there so the bolt doesnít spin. Some seatpost bolts have a hex opening in both sides, so itís even less necessary. Also note, Campy seatpost...
06-08-22, 12:27 PM
Replies: 29
Views: 759
Posted By jccaclimber

Assuming good care, Iíve seen very few worn out...

Assuming good care, Iíve seen very few worn out frames, brake levers (hoods are another story), front derailers, and really rear derailers other than the wheels and occasionally a return spring.
...
06-07-22, 06:06 PM
Replies: 8
Views: 321
Posted By jccaclimber

Rolla covered it well. If your derailer hanger...

Rolla covered it well. If your derailer hanger is bent, then even after replacing everything you listed, your shifting still won't work well. The amount a derailer hanger needs to be off by to...
05-28-22, 01:36 PM
Replies: 35
Views: 1,064
Posted By jccaclimber

1. The need to shift multiple gears at once is a...

1. The need to shift multiple gears at once is a function of how far ahead you can plan and and how fast the grade is changing. I live in a very hilly area and there are a few places on my commute...
05-22-22, 01:02 PM
Replies: 21
Views: 596
Posted By jccaclimber

The issue is that the manufacturer changed...

The issue is that the manufacturer changed ownership and decided to stop selling them.
The limited remaining NOS parts available in the second hand market are priced in a way that you might as well...
05-16-22, 02:05 AM
Replies: 39
Views: 909
Posted By jccaclimber

This sounds like a fine case of a lack of...

This sounds like a fine case of a lack of understanding leading to anger after someone tries to replace understanding with more force.

As to threads, while many *bicycle* torque specs assume...
05-08-22, 02:39 AM
Replies: 7
Views: 943
Posted By jccaclimber

As someone who had built a few recumbents and...

As someone who had built a few recumbents and ridden a lot more, many of them have absolutely appalling chain management.

Other than old or really cheap frames, tandems tend not to have them for...
05-01-22, 03:59 PM
Replies: 50
Views: 1,415
Posted By jccaclimber

1. Thatís a really clear photo. 2. That is not...

1. Thatís a really clear photo.
2. That is not normal.
3. Unless you kept you chain hear a hydrogen source or an acid (which probably would have also rusted it), I doubt this was caused by anything...
04-25-22, 05:01 PM
Replies: 23
Views: 765
Posted By jccaclimber

Saying all oils of a given SAE/ISO/whatever...

Saying all oils of a given SAE/ISO/whatever viscosity are the same is a bit like telling the police officer that Pepsi and Sam Adams are both mostly water. Itís close enough to true for those only...
04-25-22, 02:03 AM
Replies: 23
Views: 765
Posted By jccaclimber

When using oil on chains Iíve found Triflow, or...

When using oil on chains Iíve found Triflow, or any other bike chain lubricant to be close enough and readily available online and at sporting goods stores.
Personally I usually use a wax based lube...
03-05-22, 07:29 AM
Replies: 27
Views: 762
Posted By jccaclimber

McMaster Carr PN 7289A62, in stock, <$5 plus an...

McMaster Carr PN 7289A62, in stock, <$5 plus an always reasonable shipping charge. Their ground rate shipping usually shows up next day by some miracle, even cross country. They also have sockets in...
03-03-22, 12:20 AM
Replies: 9
Views: 1,616
Posted By jccaclimber

For anyone that asks in the future, Iíve used the...

For anyone that asks in the future, Iíve used the 3 bike version of the Saris Bones to move a tandem many times without issue. I do take the wheels off, but this is just to keep it narrower as I had...
01-25-22, 01:10 AM
Replies: 20
Views: 532
Posted By jccaclimber

How fast are you spinning? Those arenít meant to...

How fast are you spinning? Those arenít meant to be used at in the upper half of the speed range on at least name brand Dremel tools.
A lighter tool is going to have a harder time keeping vibration...
01-06-22, 02:34 AM
Replies: 14
Views: 1,206
Posted By jccaclimber

Sitting in the wrong gear when you secured the...

Sitting in the wrong gear when you secured the cable? Disconnect the cable and see if it travels across all rear sprockets when pushed by hand. Also verify the limit screws are out, not in.
12-19-21, 01:47 AM
Replies: 5
Views: 1,211
Posted By jccaclimber

In my case the wheel bag is soft (with some...

In my case the wheel bag is soft (with some cardboard protection that was slipped in), so it at least fits in the frame case. It probably wouldn't cost that much to ship the empty case back after...
11-17-21, 10:17 PM
Replies: 38
Views: 4,124
Posted By jccaclimber

With all of this conversation about bead...

With all of this conversation about bead expansion, I wonder if the aluminum rim expands faster than the bead does anyways? As a bare material it certainly does, I'm just not sure what it does as a...
11-05-21, 09:59 PM
Replies: 36
Views: 1,320
Posted By jccaclimber

1. It's been alluded to already, but a hop at the...

1. It's been alluded to already, but a hop at the valve stem implies the thick part of the tube around the stem is under the bead. When I install a tire I:
Line the pressure marking up with the...
09-30-21, 01:01 AM
Replies: 41
Views: 5,067
Posted By jccaclimber

I'm starting to remember why I decided to spend...

I'm starting to remember why I decided to spend my time in other forums so many years ago.
09-25-21, 12:39 PM
Replies: 9
Views: 1,163
Posted By jccaclimber

Search this link for ďalternate cable routingĒ ...

Search this link for ďalternate cable routingĒ

https://www.sheldonbrown.com/drivetrain-mixing.shtml
09-22-21, 01:18 AM
Replies: 27
Views: 3,481
Posted By jccaclimber

Similar to the above, but I no longer grind my...

Similar to the above, but I no longer grind my housings after cutting. With shifter housing Iím typically happy with the cut, but I have good cutters. Brake or any other spiral housing I now file...
09-09-21, 01:26 AM
Replies: 39
Views: 1,309
Posted By jccaclimber

For the record, the threads on a screw do add...

For the record, the threads on a screw do add strength. This is why for calculations the stressed diameter is larger than the minor diameter. That said, youíll probably be fine, itís a small...
09-04-21, 02:08 AM
Replies: 8
Views: 1,430
Posted By jccaclimber

The rear hub is likely threaded for an Arai drum...

The rear hub is likely threaded for an Arai drum so yes, intended for tandems. They have not been made new in quite a while, but are still available used and they donít tend to wear out. I have one...
09-03-21, 12:42 AM
Replies: 8
Views: 1,430
Posted By jccaclimber

https://www.bikeforums.net/tandem-cycling/1236421-...

https://www.bikeforums.net/tandem-cycling/1236421-tandem-work-stand.html

After you ride it around solo for a bit (they handle like a bus the first time or two) get someone nearby to ride it with...
09-01-21, 11:49 PM
Replies: 29
Views: 4,584
Posted By jccaclimber

My list from (single) road bikes tends to be: ...

My list from (single) road bikes tends to be:
Ancient and/or cheap:
French thread bottom brackets
Mixte frames
Cottered cranks
Lack of a derailer hanger
Chromed steel rims
Any frame with a...
08-29-21, 02:39 AM
Replies: 14
Views: 850
Posted By jccaclimber

Honestly a frame upside down is nicer than a...

Honestly a frame upside down is nicer than a crummy truing stand.
The point of a tool is to improve things. A cheap truing stand does not do that, and a frame works better than one might think.
08-25-21, 01:54 AM
Replies: 35
Views: 2,247
Posted By jccaclimber

^ I wouldnít guarantee that. Auto mechanics...

^
I wouldnít guarantee that. Auto mechanics often get awful pay, especially considering that they typically have to provide their own rather expensive tools.
Machinists in many places ( actually it...
08-24-21, 12:15 PM
Replies: 35
Views: 2,247
Posted By jccaclimber

Normally Glassdoor under lists compensation for...

Normally Glassdoor under lists compensation for Bay Area positions, but I think this might be one case where selection bias is making it over-report.
I don't want to discourage anyone from following...
08-21-21, 10:40 PM
Replies: 35
Views: 2,247
Posted By jccaclimber

Just backing this out, $400 at 2 hours of actual...

Just backing this out, $400 at 2 hours of actual fitting, 20 minutes of answering questions to random people for every actual fit, two 20 minute follow up conversations per fit. Aim really high and...
Showing results 1 to 50 of 77
 


 
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