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Search: Posts Made By: Andrew R Stewart
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09-24-22, 08:01 AM
Replies: 17
Views: 223
Posted By Andrew R Stewart

The point I was thinking of, but didn't yet fully...

The point I was thinking of, but didn't yet fully describe, is that the stub axle's diameter at the inner bearing will be quite limited by the ID size that bearing can have. By converting a...
09-23-22, 06:53 PM
Replies: 17
Views: 223
Posted By Andrew R Stewart

I was going to ramble on in a prior post about...

I was going to ramble on in a prior post about hub and trailer frame design. Specifically on the Burley D'Lite enwrapping frame around the hub aspect. Besides being able to use conventional bike ft...
09-23-22, 06:38 PM
Replies: 17
Views: 223
Posted By Andrew R Stewart

And with a last name like you have we should heed...

And with a last name like you have we should heed your machining advise:) Andy
09-23-22, 06:28 PM
Replies: 17
Views: 223
Posted By Andrew R Stewart

A few comments- Stub axles see far higher...

A few comments-

Stub axles see far higher bending forces than axles supported at both ends, way higher.
Do make sure the increased trailer height (with the 4" larger diameter tires changing the...
09-23-22, 10:51 AM
Replies: 4
Views: 135
Posted By Andrew R Stewart

Yes, I have never seen a threaded race with a...

Yes, I have never seen a threaded race with a built-in tab, the two are mutually exclusive of each other. When the tab is forced off center (rotated so the tab is no longer in the steerer's groove)...
09-23-22, 10:43 AM
Replies: 4
Views: 71
Posted By Andrew R Stewart

I suspect that the "8E 0" is a manufacturing date...

I suspect that the "8E 0" is a manufacturing date code. One could search for a matching image (via on line photos or catalogs) then search for that match's specs. Andy
09-23-22, 10:38 AM
Replies: 15
Views: 176
Posted By Andrew R Stewart

A properly aligned der hanger will allow the der...

A properly aligned der hanger will allow the der cage to be "in plane" with the cogs, the two pulleys will be vertically in line with the cog that is in use. When the pulleys/cage is off line the...
09-23-22, 09:15 AM
Replies: 4
Views: 135
Posted By Andrew R Stewart

To my eyes it looks like the tabbed lock washer...

To my eyes it looks like the tabbed lock washer has become rotated on the steerer and it's tab is not jammed on the steerer's threads (and no longer residing in the steerer's groove). The usual fix...
09-23-22, 08:05 AM
Replies: 18
Views: 325
Posted By Andrew R Stewart

Here in NYS we have the same regulations, however...

Here in NYS we have the same regulations, however most people feel that the police have more important things to do than chase reflector less cyclists.

It would be interesting to learn of this...
09-22-22, 09:11 PM
Replies: 18
Views: 325
Posted By Andrew R Stewart

The usual issue with pedal reflectors and toe...

The usual issue with pedal reflectors and toe clips is that most current reflectors are rather cheap injected plastic and the bolt heads tend to compress into the plastic bodies (of the reflectors)....
09-22-22, 07:32 PM
Replies: 19
Views: 477
Posted By Andrew R Stewart

Agree that knowing how currently working shops...

Agree that knowing how currently working shops handle their business model and the market is another very good research tool. Andy
09-22-22, 07:29 PM
Replies: 3
Views: 111
Posted By Andrew R Stewart

IIRC the start washer has nothing to do with the...

IIRC the start washer has nothing to do with the "bearing" adjustment that sets the caliper arms' slop and easy movement. The star washer is "outside" the arm's involvement.

The two caliper arms...
09-22-22, 06:52 PM
Replies: 19
Views: 477
Posted By Andrew R Stewart

THIS! It is a long time understanding that, to be...

THIS! It is a long time understanding that, to be in the bike repair business a long time, having a smart and successful spouse is a very good thing. This is your path to (at least here in the USA)...
09-22-22, 06:34 PM
Replies: 14
Views: 251
Posted By Andrew R Stewart

I disagree with the claim of a 1 3/3" steerer....

I disagree with the claim of a 1 3/3" steerer. Where the tape (a poor way to measure diameter without wrapping it around the cylinder) is placed only tries to show the crown race seats' diameter...
09-22-22, 06:17 PM
Replies: 14
Views: 349
Posted By Andrew R Stewart

The classic method to "dress" a rim's brake track...

The classic method to "dress" a rim's brake track is with a piece of emery cloth between the pad and rim. If done well the portion of the rim "above" the sides will be un effected. Andy
09-22-22, 06:11 PM
Replies: 12
Views: 331
Posted By Andrew R Stewart

My doing repairs is not only about ease or...

My doing repairs is not only about ease or minimum time spent. How I feel about what i do is important to me. I just like to try nondestructive methods first many times. But I am a Dr's kid, so the...
09-21-22, 10:02 PM
Replies: 6
Views: 158
Posted By Andrew R Stewart

You could post a vid on a sharing site then link...

You could post a vid on a sharing site then link that here but sub "." w/ "dot, "@" w/ "at" and or add a space between characters to slide by the filter.

At this point all kinds of reasons why...
09-21-22, 09:39 PM
Replies: 11
Views: 226
Posted By Andrew R Stewart

Depends on how long you need the tube to hold and...

Depends on how long you need the tube to hold and what cost should it fail. Sizing down the tube's width was (might still be if tubeless hasn't taken over another type of cycling...) a classic BMX...
Forum: Framebuilders
09-21-22, 09:31 PM
Replies: 5
Views: 168
Posted By Andrew R Stewart

Yea, for a coaster brake wheel removal needs a...

Yea, for a coaster brake wheel removal needs a wrench anyway. No need for a slide in/out "C" tab.

Any one here ever seen a CB hub that had a hollow axle and a QR skewer? Andy
09-21-22, 01:53 PM
Replies: 5
Views: 220
Posted By Andrew R Stewart

As usual Francis got it right. The lower and...

As usual Francis got it right. The lower and leading edge of the dropouts were likely ground away to allow the QR end to clear the rear derailleur when installing or removing the rear wheel. This is...
Forum: Framebuilders
09-21-22, 12:19 PM
Replies: 5
Views: 168
Posted By Andrew R Stewart

I did much the same to my Burley Duet (also the...

I did much the same to my Burley Duet (also the first generation version). I used a fairly thick plate for the tab seeing how the forces would be trying to open up the "C". I did a bunch of other...
09-21-22, 12:05 PM
Replies: 24
Views: 543
Posted By Andrew R Stewart

http://www.bluecitycycles.com/ About 10...

http://www.bluecitycycles.com/

About 10 years ago Owen was running a frame building collective work space at a satellite location. He's a nice guy and took time out to give me a tour when I had...
Forum: Framebuilders
09-21-22, 07:59 AM
Replies: 4
Views: 151
Posted By Andrew R Stewart

Most likely for a rack or fender mount. I see no...

Most likely for a rack or fender mount. I see no bolts though in the image, just a hole that probably has threads to accept a M5 bolt. Andy
09-20-22, 09:04 PM
Replies: 24
Views: 543
Posted By Andrew R Stewart

Looks like an overheated joint that finally...

Looks like an overheated joint that finally developed a crack after many miles. Many Asian frames of this era were made with automatic brazing stations. Ironically Mangalloy was brought out to better...
09-20-22, 08:40 AM
Replies: 21
Views: 496
Posted By Andrew R Stewart

One of the really nice features of having only...

One of the really nice features of having only one caliper per lever and having a caliper on each wheel is one can modulate the braking forces and better control their bike is varying conditions. So...
09-19-22, 10:05 PM
Replies: 12
Views: 331
Posted By Andrew R Stewart

Most of the grips I replace are rather worn out...

Most of the grips I replace are rather worn out (such is the exciting life of a wrench). So, I often slide, in between the grip and bar, a skinny hex wrench. Adjacent to that slide in a Clean Streak...
Forum: Framebuilders
09-19-22, 06:38 PM
Replies: 14
Views: 368
Posted By Andrew R Stewart

I guess a steel fork blade failure mode would be...

I guess a steel fork blade failure mode would be slow enough, due to this type of stress riser and cross section shape deformation, that someone who was clued in could monitor daily to avoid the...
09-19-22, 06:33 PM
Replies: 29
Views: 587
Posted By Andrew R Stewart

Tubeless and E assist? Out of the frying pan and...

Tubeless and E assist? Out of the frying pan and into the fire when a problem develops... Increasing complexity when not handling the base level already wouldn't be my choice. Andy
09-19-22, 06:25 PM
Replies: 24
Views: 543
Posted By Andrew R Stewart

Pretty much the reasons to replace a frame tube...

Pretty much the reasons to replace a frame tube (or three...) is because of sentimental value or to continue a 3rd world tour:)

I would really want the rest of the frame accessed by someone with...
09-19-22, 05:50 PM
Replies: 11
Views: 226
Posted By Andrew R Stewart

Salvaging sew up tubes... Even when I rode only...

Salvaging sew up tubes... Even when I rode only them I still didn't do that:)

I will seriously add that many sew ups are made somewhat undersized WRT diameter. I've mounted more than a few "700C"...
09-17-22, 10:11 PM
Replies: 17
Views: 283
Posted By Andrew R Stewart

Sorry for my lack of better description. MtB...

Sorry for my lack of better description. MtB cranks generally have wider "Q" dimensions that road cranks of the same ring counts. So a rider who is of narrow hips/"Q" preference can find the wider...
09-17-22, 07:59 PM
Replies: 15
Views: 243
Posted By Andrew R Stewart

To follow up on another recent thread's content-...

To follow up on another recent thread's content- The industry's response is to eliminate the ft der all together. Of course other features need to be improved when there's no ft der, like rings with...
09-17-22, 07:52 PM
Replies: 17
Views: 283
Posted By Andrew R Stewart

And for us small framed road riders mountain...

And for us small framed road riders mountain triples tend to be rather wide, "Q" factor and all. It's sad for some of us that a method that has worked for millions over the last many decades is no...
09-17-22, 04:03 PM
Replies: 9
Views: 365
Posted By Andrew R Stewart

Not at all. This trick is done in many shops...

Not at all. This trick is done in many shops without the rider even knowing. I'll use a bench grinder to bevel the top edge of pads. The other trick if only a mm or two of more reach is needed is to...
09-17-22, 03:56 PM
Replies: 17
Views: 283
Posted By Andrew R Stewart

Sometimes a new crankset is cheaper than 3 rings...

Sometimes a new crankset is cheaper than 3 rings are. Sometimes a new crankset will need a different length BB. Sometimes the old BB is an OK size for the new crankset but is already worn (and might...
09-17-22, 03:49 PM
Replies: 8
Views: 211
Posted By Andrew R Stewart

The usual goal with a question about raising the...

The usual goal with a question about raising the stem is to actually have the hand holding location (the grips on a non drop bar) higher. This can be had by a few methods.

One has been mentioned,...
09-16-22, 06:42 PM
Replies: 7
Views: 204
Posted By Andrew R Stewart

Not sure this is correct. A longer straddle/link...

Not sure this is correct. A longer straddle/link cable will result in less leverage on the pad but the lever will feel more solid. A shorter cross cable will have more leverage but the lever will...
09-16-22, 06:35 PM
Replies: 9
Views: 365
Posted By Andrew R Stewart

On the first image, the linkage brake w/ drop...

On the first image, the linkage brake w/ drop bolt mounted to the curved bridge, the problem I see is the lack of a flat mounting pad brazed onto that bridge. No mater what type of pads or drop bolt...
09-16-22, 08:25 AM
Replies: 13
Views: 385
Posted By Andrew R Stewart

With a way to tension the chain and the large...

With a way to tension the chain and the large chain wrap around the cog one can very likely ride the chain way past 1% wear and not have a "problem". Chain wear is a gray shade, not a black/white...
09-15-22, 09:24 PM
Replies: 26
Views: 513
Posted By Andrew R Stewart

Chain skipping in the higher effort cogs on an...

Chain skipping in the higher effort cogs on an older bike when used by a rider who wants higher effort gearing usually means that those cogs are worn out, and the chain likely too. Replacing the OEM...
09-15-22, 08:04 PM
Replies: 23
Views: 521
Posted By Andrew R Stewart

With no images or better descriptions I don't see...

With no images or better descriptions I don't see how we can tell you what EXACTLY happened. I have seen more than a few Schreader valve stems, that are the common rubber/molded in type, develop a...
09-15-22, 07:50 PM
Replies: 11
Views: 275
Posted By Andrew R Stewart

Sorry but you are wrong. Spokes and cones are two...

Sorry but you are wrong. Spokes and cones are two rather different things that have different stresses and different failure modes, their overlap is both get worse with continuing use.

I will say...
09-15-22, 09:07 AM
Replies: 11
Views: 275
Posted By Andrew R Stewart

Cones getting a "sharp edge" is just wear that...

Cones getting a "sharp edge" is just wear that has gone on for way too long. Steel is a material that can be molded and flowed by pressure and cycles of force. Forging is an example of this process...
09-15-22, 09:01 AM
Replies: 9
Views: 295
Posted By Andrew R Stewart

This illustrates what us wrenches go through and...

This illustrates what us wrenches go through and can get blamed for being in the dark about. Canyon has decided on a business model that bypasses the experienced experts. To which I say too bad for...
09-15-22, 08:51 AM
Replies: 29
Views: 587
Posted By Andrew R Stewart

Tubes are not complicated. But not all...

Tubes are not complicated. But not all tire/tube/rim combos work as wished or as assumed they should.

I'll bet a virtual beer that the valves are Schreader, not Presta. One of the reasons why...
09-14-22, 08:37 PM
Replies: 29
Views: 587
Posted By Andrew R Stewart

It all depends on the tire's fit to the rim. And...

It all depends on the tire's fit to the rim. And this is why this type of question has no answer that is correct for all the possible tire/rim combos, the tens of thousands of the combos... This is...
09-14-22, 08:29 PM
Replies: 11
Views: 275
Posted By Andrew R Stewart

If the cones were OEM ones and they wore to the...

If the cones were OEM ones and they wore to the point of a sharp small end being sharp there's a lot of chance the cups are also worn. Do your homework as a replacement wheel can be the lower cost...
09-14-22, 08:25 PM
Replies: 2
Views: 183
Posted By Andrew R Stewart

While Francis's advice is much what I would do...

While Francis's advice is much what I would do filing dropouts is a non replaceable change. So instead I will suggest filing the axle. Two flats filed to about the depth of the thread root is usually...
Forum: Framebuilders
09-14-22, 09:02 AM
Replies: 14
Views: 362
Posted By Andrew R Stewart

While I do prefer specific (I make my own) DT...

While I do prefer specific (I make my own) DT cable stops over shifter bosses given that this frame is made from REALLY thin stuff I would suggest just using the lever boss mounted adaptors. That...
09-14-22, 08:47 AM
Replies: 22
Views: 301
Posted By Andrew R Stewart

I don't think I could really say. But I will...

I don't think I could really say. But I will suggest that the focus on what is the tiniest portion of bikes sold, those which are built up by a LBS from a frame and a pile of parts, is not very...
Showing results 1 to 50 of 1000
 


 
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