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Search: Posts Made By: FBinNY
Showing results 1 to 50 of 1000
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Forum: Bicycle Mechanics
06-23-24, 02:13 AM
Replies: 7
Views: 85
Posted By FBinNY

If this is a centerlock disc, there's the...

If this is a centerlock disc, there's the possibility that the disc is moving on the hub. There's also the possibility that the hub is moving on the fork.
Forum: Bicycle Mechanics
06-22-24, 11:39 PM
Replies: 7
Views: 85
Posted By FBinNY

It may not be the hub, but the most important...

It may not be the hub, but the most important clue is frequency. Repetitive once per revolution points to some possibilities, while more random clicks and creaks points to others.

More details...
Forum: Advocacy & Safety
06-22-24, 04:01 PM
Replies: 74
Views: 4,247
Posted By FBinNY

Generally I agree, however I have no issue...

Generally I agree, however I have no issue treating low power pedal assist bikes as bicycles. There are various barriers that keep people off bikes, these include terrain, age, physical limitations,...
Forum: Advocacy & Safety
06-22-24, 03:50 PM
Replies: 7
Views: 154
Posted By FBinNY

Not a justification, but a possible explanation. ...

Not a justification, but a possible explanation.

The path is too narrow to allow safe passing, so a slow cyclist can easily frustrate riders behind him. So, my question is why did the designers...
Forum: Bicycle Mechanics
06-22-24, 03:35 PM
Replies: 4
Views: 108
Posted By FBinNY

This is a mechanic's forum. You need an...

This is a mechanic's forum. You need an electrician.

Seriously, have you tried your luck with the folks at Shimano USA?
Forum: Bicycle Mechanics
06-21-24, 05:47 PM
Replies: 28
Views: 517
Posted By FBinNY

Bearing balls are not ghosts, and cannot pass...

Bearing balls are not ghosts, and cannot pass through walls.

So, unless the cone was loosened, or there's another visible exit path, those balls didn't magically escape from the freewheel. ...
Forum: Bicycle Mechanics
06-21-24, 02:52 AM
Replies: 28
Views: 517
Posted By FBinNY

Agree with above. When I said they came ready to...

Agree with above. When I said they came ready to ride, I took your question to mean were they lubed, not about what kind of lube.

When comes time to relube, they want oil, not grease. Grease is...
Forum: Bicycle Mechanics
06-21-24, 02:17 AM
Replies: 7
Views: 180
Posted By FBinNY

Yes. Though if that doesn't help try the...

Yes. Though if that doesn't help try the opposite.

Once you understand the basics, you shouldn't be afraid to go off book a bit to address issues. BITD seasoned mechanics would tweak FD cages to...
Forum: Bicycle Mechanics
06-21-24, 02:05 AM
Replies: 28
Views: 517
Posted By FBinNY

Yes, the freewheel will come ready to go.

Yes, the freewheel will come ready to go.
Forum: Bicycle Mechanics
06-20-24, 10:49 PM
Replies: 7
Views: 180
Posted By FBinNY

This might help. Try adjusting the FD...

This might help.

Try adjusting the FD position so the cage is SLIGHTLY heel out.
Forum: Bicycle Mechanics
06-20-24, 09:07 PM
Replies: 52
Views: 58,634
Posted By FBinNY

18 year old Zombie. You're not a newbie here, so...

18 year old Zombie. You're not a newbie here, so is that a shot at a record?
Forum: Bicycle Mechanics
06-20-24, 08:58 PM
Replies: 28
Views: 517
Posted By FBinNY

Reality check question, please don't take...

Reality check question, please don't take offense.

As you steer the bus, are you making a LEFT turn?
Forum: Bicycle Mechanics
06-20-24, 08:08 PM
Replies: 18
Views: 377
Posted By FBinNY

Like many things, chain suck is the result of...

Like many things, chain suck is the result of combinations of things which individually wouldn't matter.

Curing it will call for some detective work. Since you have a few bikes, only one of which...
Forum: Bicycle Mechanics
06-20-24, 04:41 PM
Replies: 18
Views: 377
Posted By FBinNY

Fair warning, what follows may be an example of...

Fair warning, what follows may be an example of "to a hammer, everything is a nail.", so allow for that.

Many years ago when chain first became a common issue, I formed a theory about the cause...
Forum: Bicycle Mechanics
06-20-24, 12:45 PM
Replies: 18
Views: 377
Posted By FBinNY

What kind of chain lube are you using?

What kind of chain lube are you using?
Forum: Bicycle Mechanics
06-20-24, 12:18 AM
Replies: 12
Views: 272
Posted By FBinNY

One thing to keep in mind is that the self-adjust...

One thing to keep in mind is that the self-adjust feature is built into the lever and cannot change. It will always try to adjust to the intended travel.

So, the first question is whether the...
Forum: Bicycle Mechanics
06-20-24, 12:05 AM
Replies: 7
Views: 180
Posted By FBinNY

Before going nuts, bring the low limit closer and...

Before going nuts, bring the low limit closer and see if that helps.

Otherwise, you didn't offer details, but are you easing off the pedal pressure as you shift?

That matters because a tight...
Forum: Bicycle Mechanics
06-20-24, 12:00 AM
Replies: 28
Views: 517
Posted By FBinNY

Get a bus or truck driver. I've never found...

Get a bus or truck driver. I've never found anything better for this than 2 strong hands on the wheel.

Otherwise, get a helper, so there's 4 hands.

FWIW the turn the bus method produces...
Forum: Bicycle Mechanics
06-19-24, 08:18 PM
Replies: 31
Views: 888
Posted By FBinNY

Agreed. Both those fall under my unusual...

Agreed. Both those fall under my unusual circumstances or poor materials, or both.

Not everything is the builder's fault, but IMO he's always the prime suspect.
Forum: Bicycle Mechanics
06-19-24, 07:15 PM
Replies: 4
Views: 769
Posted By FBinNY

No, they're flat. Since the thread of 14 and 15g...

No, they're flat. Since the thread of 14 and 15g spokes is the same except for diameter, any and everything related to forming them is the same. So whatever applies to forming the threads would...
Forum: Bicycle Mechanics
06-19-24, 06:58 PM
Replies: 31
Views: 888
Posted By FBinNY

I think that's a fair summary. In a well built...

I think that's a fair summary.
In a well built wheel spoke life should exceed rim life.

IMO, excluding crashes or unusual conditions, any wheel that fails in under 25,000 road miles was poorly...
Forum: Bicycle Mechanics
06-19-24, 05:39 PM
Replies: 31
Views: 888
Posted By FBinNY

Though I'm very consistent and build how I do for...

Though I'm very consistent and build how I do for reasons, I'm also aware that the technical arguments are subtle and there are valid reasons for not doing what I prefer.

But here's a reason I...
Forum: Bicycle Mechanics
06-19-24, 05:29 PM
Replies: 4
Views: 173
Posted By FBinNY

Call me email the folks at Shimano USA. There's...

Call me email the folks at Shimano USA. There's a chance they might pull one from a warranty return or similar situation.

Be sure to frame it as a request for a favor for someone needing help.
Forum: Bicycle Mechanics
06-19-24, 01:09 PM
Replies: 31
Views: 888
Posted By FBinNY

To clarify the clarification. There is...

To clarify the clarification.

There is absolutely no reason for spokes to break from metal fatigue. Stainless steel has a (poorly named) fatigue limit ...
Forum: Bicycle Mechanics
06-18-24, 01:31 PM
Replies: 42
Views: 1,058
Posted By FBinNY

Yes, in a broad sense it is. On a narrow...

Yes, in a broad sense it is.

On a narrow rim, the clearance for the valve is carefully calculated. A wider valve can cause tire seating issues.

But, it's beside the point. Presta valves have...
Forum: Bicycle Mechanics
06-18-24, 07:34 AM
Replies: 42
Views: 1,058
Posted By FBinNY

Why would you ask that? Look around a bit and...

Why would you ask that? Look around a bit and the answer is obvious.
Forum: Bicycle Mechanics
06-18-24, 07:15 AM
Replies: 11
Views: 420
Posted By FBinNY

Extending the bottom lower calls for some...

Extending the bottom lower calls for some creative DIY.

For example, you might shave down a piece of wooden dowel to a jam fit and force it in. You'll want to put a screw in the side as a stop so...
Forum: Bicycle Mechanics
06-17-24, 11:36 PM
Replies: 31
Views: 888
Posted By FBinNY

You're right it was a typo. But you did a great...

You're right it was a typo. But you did a great job reading between the lines.
Forum: Bicycle Mechanics
06-17-24, 10:20 PM
Replies: 11
Views: 420
Posted By FBinNY

That looks like it was probably made for a...

That looks like it was probably made for a folding bike.

Odds are that you won't find a longer version of the lower element. However, you might find a longer 27.2 post.

One thought. Going...
Forum: Bicycle Mechanics
06-17-24, 08:59 PM
Replies: 20
Views: 750
Posted By FBinNY

IME flat tires coming off rims was never an issue...

IME flat tires coming off rims was never an issue with wire bead tires until tubeless.

So yes, the retention solves a problem, but it's a new one that arose with tubeless, so could hardly be...
Forum: Bicycle Mechanics
06-17-24, 12:27 PM
Replies: 18
Views: 317
Posted By FBinNY

You may not find a 5s chain. However a 6s is the...

You may not find a 5s chain. However a 6s is the same.
Forum: Bicycle Mechanics
06-17-24, 11:56 AM
Replies: 18
Views: 317
Posted By FBinNY

The chainring looks fine, near new by my...

The chainring looks fine, near new by my standards.

The headset can be OK without the O-ring, but I wouldn't. You can probably find a decent match at hardware store for pocket change.

As for...
Forum: Bicycle Mechanics
06-17-24, 04:07 AM
Replies: 16
Views: 398
Posted By FBinNY

I'm impressed. Kudos to Sram for overcoming...

I'm impressed.

Kudos to Sram for overcoming the challenge of designing an amazingly short lived bearing for such a light duty application.
Forum: Bicycle Mechanics
06-17-24, 03:58 AM
Replies: 14
Views: 309
Posted By FBinNY

I guess I'm either too old, or have too long a...

I guess I'm either too old, or have too long a memory or both.

The original Positron was a push/pull affair, with detents in the RD itself. I just took a moment to search it out, and here's a link...
Forum: Bicycle Mechanics
06-16-24, 11:08 PM
Replies: 38
Views: 968
Posted By FBinNY

It's a split cylinder that is wedged open by...

It's a split cylinder that is wedged open by cones at both ends. I'm not familiar with that specific item, but I've seen versions with a single lengthwise cut, 2 half segments, and 3 1/3 segments.
...
Forum: Bicycle Mechanics
06-16-24, 10:24 PM
Replies: 38
Views: 968
Posted By FBinNY

While the net effect is the same, my experience...

While the net effect is the same, my experience says the opposite.

On forks where it matters (most) the issue isn’t compression from the stem, but bulging from plug (over) expansion, which must be...
Forum: Bicycle Mechanics
06-16-24, 10:10 PM
Replies: 14
Views: 309
Posted By FBinNY

The terminology most commonly used is: Inner...

The terminology most commonly used is:

Inner wire = exactly as the name implies.
Housing = the outer element through the wire runs
Cable = the complete unit comprising both.

There are plenty...
Forum: Bicycle Mechanics
06-16-24, 08:55 PM
Replies: 22
Views: 685
Posted By FBinNY

Forgive me if it's been said already, but new...

Forgive me if it's been said already, but new hangers are not automatically square when installed.

So, the first, and if you're lucky only, step is to square up the new hanger. Then see where you...
Forum: Bicycle Mechanics
06-16-24, 08:52 PM
Replies: 16
Views: 380
Posted By FBinNY

The description doesn't make sense to me. Do...

The description doesn't make sense to me.

Do you mean that the chain somehow drops to the inside of the inner ring when trying to shift it outward? That's hard to accept, though it is fairly...
Forum: Bicycle Mechanics
06-16-24, 08:35 PM
Replies: 31
Views: 888
Posted By FBinNY

Qualify this with the fact that my total lifetime...

Qualify this with the fact that my total lifetime builds are in the hundreds not the thousands, but I've never seen or heard of a broken spoke on a wheel Ive built. Many of those were for "hard...
Forum: Bicycle Mechanics
06-16-24, 08:06 PM
Replies: 16
Views: 398
Posted By FBinNY

FWIW I've never seen a pulley outlast it's...

FWIW I've never seen a pulley outlast it's bearings.

However, you've answered your own question. Regardless of how and why, pulley performance will degrade over time, causing sloppier shifting.
...
Forum: Bicycle Mechanics
06-16-24, 07:32 PM
Replies: 16
Views: 398
Posted By FBinNY

Long before you'll wear out a bearing, ceramic or...

Long before you'll wear out a bearing, ceramic or steel, (or even a bronze bushing) you'll see the effects of dirt accumulation and/or peripheral wear of the pulley.
Forum: Bicycle Mechanics
06-16-24, 07:30 PM
Replies: 31
Views: 888
Posted By FBinNY

Yes, we can back engineer and intuit their...

Yes, we can back engineer and intuit their reasoning. OTOH, we have no basis to know. Even worse, we can't know if these are the opinions of engineers who understand how stuff works, or possibly thd...
Forum: Bicycle Mechanics
06-16-24, 05:41 PM
Replies: 31
Views: 888
Posted By FBinNY

I don't know Shimano's thinking, but I build all...

I don't know Shimano's thinking, but I build all wheels mirrored. So, here's my take.

I'll continue to build with more stressed spokes elbow out. For rear wheels that's based on the driving...
Forum: Bicycle Mechanics
06-16-24, 12:35 PM
Replies: 31
Views: 888
Posted By FBinNY

OTOH acceleration loads probably see more cycles....

OTOH acceleration loads probably see more cycles. So, name your poison ----- fewer bigger loads or more frequent smaller loads?

Since I won't use disc brakes on the road, my choice is easy, the...
Forum: Bicycle Mechanics
06-15-24, 10:09 PM
Replies: 31
Views: 888
Posted By FBinNY

I've building rear wheels pulling elbow out since...

I've building rear wheels pulling elbow out since 1967. This was based on observation that elbow in spokes broke 2-3 times more often than elbow out --- possibly because it's easier to properly set...
Forum: Bicycle Mechanics
06-15-24, 08:16 PM
Replies: 31
Views: 888
Posted By FBinNY

As noted by others any pattern that isn't near...

As noted by others any pattern that isn't near radial will have spokes crossing too close to the hub.

I suppose it might be possible to work the shape of those passing to the outside, but field...
Forum: Bicycle Mechanics
06-15-24, 07:36 PM
Replies: 13
Views: 366
Posted By FBinNY

Pins break and, as noted are replaceable. ...

Pins break and, as noted are replaceable.

Keep in mind that pin loads ard much higher these days because pins are peened over the outer plate, rather than simply pushed through.

So,...
Forum: Bicycle Mechanics
06-14-24, 07:16 PM
Replies: 58
Views: 5,996
Posted By FBinNY

Sounds good, Knob Creek and a splash.

Sounds good, Knob Creek and a splash.
Forum: Bicycle Mechanics
06-14-24, 06:03 PM
Replies: 18
Views: 505
Posted By FBinNY

I avoid doing specific product recommendations,...

I avoid doing specific product recommendations, so I won't make any here. I wrote what I did because you brought up that money was tight, and with the levers taking up a chunk of change the whole...
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