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Search: Posts Made By: Andrew R Stewart
Showing results 1 to 50 of 1000
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Forum: Framebuilders
09-18-24, 06:09 PM
Replies: 10
Views: 246
Posted By Andrew R Stewart

Vertical dropouts have the advantage of the axle...

Vertical dropouts have the advantage of the axle sitting against the dropout's slot forward face, so nearly no chance of slipping about within the slot. A long horizontal slot allows for a range of...
Forum: Framebuilders
09-18-24, 09:23 AM
Replies: 12
Views: 332
Posted By Andrew R Stewart

I've blown my nose after a lot of sanding and...

I've blown my nose after a lot of sanding and seen grit... Having a beard the whole "you should wear a mask" has a different level of cost (the shaving the beard) or a lesser ability to filter (beard...
Forum: Bicycle Mechanics
09-18-24, 09:17 AM
Replies: 6
Views: 183
Posted By Andrew R Stewart

Even with complete to the letter set up, and...

Even with complete to the letter set up, and various tweaks some of us have learned over the years, shifting (and the front especially so to the degree of the industry trying to eliminate it) is...
Forum: Bicycle Mechanics
09-17-24, 06:53 PM
Replies: 4
Views: 161
Posted By Andrew R Stewart

You look at what's happening and figure it out?...

You look at what's happening and figure it out? Is the der hanger bent? The der cage or pulley bent? The cable kinked or otherwise being hindered in its movement? Check for twisted/damaged chain...
Forum: Bicycle Mechanics
09-14-24, 06:18 PM
Replies: 17
Views: 388
Posted By Andrew R Stewart

The classic method would be to just cut down the...

The classic method would be to just cut down the post length. With a carbon fiber post this might include a sealing of the raw cut face on the bottom with a skim of epoxy.

One aspect is that more...
Forum: Framebuilders
09-13-24, 01:59 PM
Replies: 6
Views: 300
Posted By Andrew R Stewart

As this sub forum is about frames and not the...

As this sub forum is about frames and not the other aspects of bikes I might suggest trying both Bicycle maintenance and C&V subs. Andy
Forum: Framebuilders
09-11-24, 06:26 PM
Replies: 21
Views: 651
Posted By Andrew R Stewart

Doug F's shop has ceiling ran hoses, it really...

Doug F's shop has ceiling ran hoses, it really keeps the floor when you're doing the joint dance. I've though of this for years but never got around to it.

I still have my hose end fitting...
Forum: Bicycle Mechanics
09-11-24, 07:31 AM
Replies: 9
Views: 476
Posted By Andrew R Stewart

"Q: is it practical to have a 22 turned down by a...

"Q: is it practical to have a 22 turned down by a machine shop?" southpier

Sure but that level of precision is not needed and is costly. Many have just used a file and emery cloth. Stems generally...
Forum: Bicycle Mechanics
09-11-24, 07:20 AM
Replies: 24
Views: 579
Posted By Andrew R Stewart

Campy's retainer cages do hold more balls than is...

Campy's retainer cages do hold more balls than is typical for a cage, with their BBs the full ball count (11) is caged as example. So the claim that caged balls are always "worse" than loose ones can...
Forum: Bicycle Mechanics
09-10-24, 07:20 PM
Replies: 12
Views: 392
Posted By Andrew R Stewart

Most French BB thread chasing taps I have handled...

Most French BB thread chasing taps I have handled were old and often well worn. They haven't been a common (as far as having the chase out a BB shell can be called common) need for decades on bikes...
Forum: Bicycle Mechanics
09-10-24, 07:10 PM
Replies: 24
Views: 579
Posted By Andrew R Stewart

Besides the new and used headsets selling via on...

Besides the new and used headsets selling via on line sites (Ebay...) and exchanging the balls (if used), no I know of no specific current source for Campy NOS caged bearings. But since one can sub...
Forum: Bicycle Mechanics
09-09-24, 06:49 PM
Replies: 9
Views: 347
Posted By Andrew R Stewart

Many/most modern Shimano have/had model numbers...

Many/most modern Shimano have/had model numbers stamped into the rear der's inner parallelogram link. If this has one then a simple search should bring more info. It does loo to have the cable anchor...
Forum: Framebuilders
09-09-24, 11:45 AM
Replies: 466
Views: 327,611
Posted By Andrew R Stewart

Looks nice. I, too, often use bronze for lugs and...

Looks nice. I, too, often use bronze for lugs and agree that it's hard to not get some flux burn. Are the rear dropouts your own? Is their slot long enough to handle gearing changes?

I was just...
Forum: Bicycle Mechanics
09-08-24, 09:27 AM
Replies: 43
Views: 1,256
Posted By Andrew R Stewart

The big issue I've seen with 72 and 144 spoke...

The big issue I've seen with 72 and 144 spoke wheels is tool access to the nipples. In some cases I have removed the rubber to use the nipple ends in the rim to do most of the nipple turning.

BTW...
Forum: Bicycle Mechanics
09-08-24, 09:20 AM
Replies: 4
Views: 171
Posted By Andrew R Stewart

There's no basic difference other than dimensions...

There's no basic difference other than dimensions between most better crank (mentioned brands) and the Campy one. Rings still clamp together with bolts. Most of the time it is possible to remove an...
Forum: Framebuilders
09-05-24, 01:12 PM
Replies: 21
Views: 651
Posted By Andrew R Stewart

I have sort of industrial shelving that holds all...

I have sort of industrial shelving that holds all my brazing bits. Shelves and the corner uprights are bolted together with 1/4x20s. I have a long bolt secured to one corner upright and slip the...
Forum: Bicycle Mechanics
09-05-24, 11:11 AM
Replies: 13
Views: 621
Posted By Andrew R Stewart

I used a term before, "event wheels". These would...

I used a term before, "event wheels". These would be the wheels that you pull out for special rides, important races and days you want to show off. All the other rides would be done on what some call...
Forum: Bicycle Mechanics
09-05-24, 08:16 AM
Replies: 13
Views: 621
Posted By Andrew R Stewart

This story is familiar to any shop wrench. We...

This story is familiar to any shop wrench. We refer to the "death spiral" of a wheel. It starts with the first broken spoke after, say, x miles (actually cycles of stress). That is replaced. The next...
Forum: Bicycle Mechanics
09-05-24, 07:50 AM
Replies: 7
Views: 290
Posted By Andrew R Stewart

"Well, yeah, a custom fork would be better. But...

"Well, yeah, a custom fork would be better. But also lot more expensive. I guess I should've said "best production fork." " FastJake

My focus wasn't on custom VS production. Instead a poor attempt...
Forum: Bicycle Mechanics
09-04-24, 05:32 PM
Replies: 7
Views: 290
Posted By Andrew R Stewart

Looks like the Crust fork checks your boxes. I...

Looks like the Crust fork checks your boxes. I won't go into what's "best"... Andy (who makes his own forks too)
Forum: Bicycle Mechanics
09-04-24, 05:25 PM
Replies: 14
Views: 402
Posted By Andrew R Stewart

This! But since no one (that I know of) records...

This! But since no one (that I know of) records their shifts per ride:) the non exact but prudent mileage count has to do. Cable fatigue/breakage is somewhat rider based, given the same shifter. At...
Forum: Bicycle Mechanics
09-04-24, 08:08 AM
Replies: 14
Views: 402
Posted By Andrew R Stewart

Shimano would say it (cable replacements) if the...

Shimano would say it (cable replacements) if the cables tended to break before traditional down tubed lever cables would, especially if the broken cable could become jammed in the lever and thus the...
Forum: Bicycle Mechanics
09-03-24, 07:31 PM
Replies: 14
Views: 402
Posted By Andrew R Stewart

First thing I think of is the rear gear cable is...

First thing I think of is the rear gear cable is starting to fray enough to have the broken ends snagging on what they are running in, usually right at the end in the shifter (and thus out of sight...
Forum: Bicycle Mechanics
09-03-24, 08:13 AM
Replies: 14
Views: 487
Posted By Andrew R Stewart

Francis makes a good point in questioning the...

Francis makes a good point in questioning the value in "upgrading" such a basic level bike.

Having said that, some mountain bikes that come with rim brakes also have the mounting points on the...
Forum: Bicycle Mechanics
09-02-24, 08:21 PM
Replies: 5
Views: 238
Posted By Andrew R Stewart

Making a bracket to fit the bike and the...

Making a bracket to fit the bike and the trailer's tongue is not hard. Adding the ability for the bike to also lean when cornering is the challenge. Think about auto universal joints or a flexible...
Forum: Bicycle Mechanics
09-02-24, 07:59 PM
Replies: 13
Views: 648
Posted By Andrew R Stewart

Typical solution for a shop is to dig into their...

Typical solution for a shop is to dig into their old take off parts and find a replacement. Andy
Forum: Bicycle Mechanics
09-02-24, 07:53 AM
Replies: 16
Views: 578
Posted By Andrew R Stewart

Steel rings tend to last longer than Al ones. The...

Steel rings tend to last longer than Al ones. The imaged crank uses steel rings. They look fine IMO too. Andy
Forum: Bicycle Mechanics
09-02-24, 07:50 AM
Replies: 23
Views: 693
Posted By Andrew R Stewart

No reason not to start out with fairly close...

No reason not to start out with fairly close limit screw settings. However the der has some slop in the various pivots and links so applying pressure to anything other than the cable anchor bolt will...
Forum: Bicycle Mechanics
08-24-24, 06:59 AM
Replies: 7
Views: 434
Posted By Andrew R Stewart

To my knowledge there are no cassette to...

To my knowledge there are no cassette to freewheel adapters. These wheels were designed at a time when freewheels were still common and the cog counts less than currently popular. One of the reasons...
Forum: Framebuilders
08-20-24, 07:47 AM
Replies: 40
Views: 1,889
Posted By Andrew R Stewart

All of the gas fluxers I have used (4 IIRC) had...

All of the gas fluxers I have used (4 IIRC) had only one type of liquid flux in them, good for either brass/bronze or silvers. But I found the need for paste flux too and in the end decided that the...
Forum: Framebuilders
08-19-24, 09:33 AM
Replies: 8
Views: 430
Posted By Andrew R Stewart

Agreed that it's a lot to remove. Certainly...

Agreed that it's a lot to remove. Certainly without knowing more about the current state (material, wall thickness, ST ID below the clamping area, any deformation present) I would not be the one to...
Forum: Bicycle Mechanics
08-18-24, 08:48 AM
Replies: 8
Views: 376
Posted By Andrew R Stewart

I have a number of Shiftmates on my various bikes...

I have a number of Shiftmates on my various bikes (Campy/Shimano mix) and don't have the pulley rotating within the cable wrap problem on any of them. I have seen this, though only a couple of times...
Forum: Bicycle Mechanics
08-17-24, 12:12 PM
Replies: 4
Views: 201
Posted By Andrew R Stewart

The "3" means a 68mm shell width (and a "5" is a...

The "3" means a 68mm shell width (and a "5" is a 70mm shell). The "NL is the axle's lengths beyond the bearing tracks. The "81-1" is likely a date code. Andy
Forum: Bicycle Mechanics
08-16-24, 01:25 PM
Replies: 5
Views: 252
Posted By Andrew R Stewart

Are the gauges spaced 120* apart? Might be from a...

Are the gauges spaced 120* apart? Might be from a 3 jaw lathe chuck if the crown race seat was turned down.
Is the chrome plate intact in the gauges' bases? If so than the "damage" was at the...
Forum: Bicycle Mechanics
08-16-24, 01:09 PM
Replies: 11
Views: 291
Posted By Andrew R Stewart

There are what I would call truly hand made tires...

There are what I would call truly hand made tires but they are generally the very high end models. Sew ups/tubulars and "open" wired ons (what most will incorrectly call "clinchers") have the tread...
Forum: Bicycle Mechanics
08-16-24, 07:48 AM
Replies: 11
Views: 291
Posted By Andrew R Stewart

We're not sure what is exactly going on too with...

We're not sure what is exactly going on too with no more data and a lack of visuals. But a fairly common issue when installing tires is that their beads don't overlap with the rim consistently around...
Forum: Bicycle Mechanics
08-16-24, 07:38 AM
Replies: 4
Views: 357
Posted By Andrew R Stewart

Most will attach the fender struts at the drop...

Most will attach the fender struts at the drop out. Prime reason not to is disk brake caliper interference. A secondary reason is that one really wants the fender strut to not cause the fender to...
Forum: Bicycle Mechanics
08-15-24, 07:57 AM
Replies: 9
Views: 273
Posted By Andrew R Stewart

I suspect this bike is "defined" as a sidewalk...

I suspect this bike is "defined" as a sidewalk bike and thus not subject to the same regs as larger kids' bikes. Andy
Forum: Bicycle Mechanics
08-13-24, 05:24 PM
Replies: 7
Views: 376
Posted By Andrew R Stewart

Cutting a strip of aluminum soda can was in favor...

Cutting a strip of aluminum soda can was in favor for a couple of years around here. Andy (who was a Coke guy)
Forum: Bicycle Mechanics
08-13-24, 04:07 PM
Replies: 27
Views: 992
Posted By Andrew R Stewart

The Sekine is also likely to have smooth sided...

The Sekine is also likely to have smooth sided rim beads. Araya and Ukai both made copies of the Weinmann 2115 as examples.

I agree that straight sided rims are not where I would run folding bead...
Forum: Bicycle Mechanics
08-13-24, 03:50 PM
Replies: 26
Views: 856
Posted By Andrew R Stewart

Just as with axle cones and their locknuts, I'd...

Just as with axle cones and their locknuts, I'd rather not have any tab on my headset spacers. Both types of steerer cuts (flat or groove) can crack if not done well or abused. Both reduce the amount...
Forum: Bicycle Mechanics
08-10-24, 08:24 AM
Replies: 6
Views: 368
Posted By Andrew R Stewart

Spoke lengths will be quite different. With the...

Spoke lengths will be quite different. With the bigger hub flange diameter how the lacing pattern will be dealt with changes some. With a hub brake one really wants to avoid radial and even 1X...
Forum: Bicycle Mechanics
08-10-24, 08:10 AM
Replies: 26
Views: 856
Posted By Andrew R Stewart

I find being able to turn both the threaded race...

I find being able to turn both the threaded race and its lock nut against each other helps, Simply and only turning the top/lock nut down often won't get the two parts tight enough to hold up to...
Forum: Bicycle Mechanics
08-10-24, 08:00 AM
Replies: 15
Views: 764
Posted By Andrew R Stewart

Some riders sweat might as well be battery acid....

Some riders sweat might as well be battery acid. Others have sweat with far less corrosiveness.

I had a friend/coworker who commuted year round. His winter bike lived outside and it suffered far...
Forum: Bicycle Mechanics
08-09-24, 02:02 PM
Replies: 15
Views: 764
Posted By Andrew R Stewart

When I lived in Raleigh, NC and would do a 2...

When I lived in Raleigh, NC and would do a 2 hour+ ride after work I would end up with rather wet bar tape (I use Cinelli rear cork). Sometimes I would let it dry off before bringing the bike inside...
Forum: Bicycle Mechanics
08-07-24, 08:39 AM
Replies: 4
Views: 270
Posted By Andrew R Stewart

As long as the rear ders are 9 speed, or less,...

As long as the rear ders are 9 speed, or less, the same cog count shifter will index. However the front is where the problems will show. Road and MtB front ders have different cable pull amounts so...
Forum: Bicycle Mechanics
08-06-24, 05:59 PM
Replies: 6
Views: 468
Posted By Andrew R Stewart

I can't remember a steel fork I have serviced...

I can't remember a steel fork I have serviced that used a split crown race. But there's plenty of carbon/carbon/carbon forks/crowns/steerers that have used a split race in my past. Andy
Forum: Bicycle Mechanics
08-06-24, 07:27 AM
Replies: 6
Views: 308
Posted By Andrew R Stewart

Assuming the correct replacement bearings are...

Assuming the correct replacement bearings are sourced the labor and tooling to only replace them is far less than replacing the press fitted cups/race. Andy
Forum: Bicycle Mechanics
08-06-24, 07:17 AM
Replies: 6
Views: 468
Posted By Andrew R Stewart

Split crown races are easier to install but might...

Split crown races are easier to install but might not stay put as securely and if allowed to move about (loose headset adjustment as example) might result in wear/damage to the crown's seat. I take...
Forum: Bicycle Mechanics
08-06-24, 07:11 AM
Replies: 8
Views: 404
Posted By Andrew R Stewart

Sometimes I have found that the provided bar end...

Sometimes I have found that the provided bar end plugs won't fit into the bars even with serious hammer work. For those I'll just go with a smaller plug. If you have a LBS you might seek their...
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