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Search: Posts Made By: Kontact
Showing results 1 to 50 of 1000
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Forum: Classic & Vintage
09-19-24, 06:29 AM
Replies: 20
Views: 496
Posted By Kontact

Why the Road Link? Looks like you have the B...

Why the Road Link? Looks like you have the B tension completely removed.
Forum: Fifty Plus (50+)
09-18-24, 09:53 PM
Replies: 58
Views: 3,582
Posted By Kontact

That seat height method is going to give you a...

That seat height method is going to give you a low saddle height compared to more accepted methods.
Forum: Fifty Plus (50+)
09-18-24, 09:25 PM
Replies: 58
Views: 3,582
Posted By Kontact

Measuring stack and reach aren't going to tell...

Measuring stack and reach aren't going to tell you anything. Those are numbers that people who already have a good fit use to select bikes that will work for their fit.

You lowered the seat. What...
Forum: Bicycle Mechanics
09-18-24, 09:11 PM
Replies: 6
Views: 166
Posted By Kontact

It isn't at all unusual for a manufacturer to...

It isn't at all unusual for a manufacturer to change specs mid-model - so I have no doubt there are versions of your bike that take either type. I doubt the 45/45 bearings are just a figment of...
Forum: Classic & Vintage
09-18-24, 08:17 PM
Replies: 28
Views: 1,067
Posted By Kontact

I love how the RB-1 always comes up in a GP...

I love how the RB-1 always comes up in a GP thread, even though GP seems to hate bikes like the RB-1.


I disagree with the way GP markets bicycling by suggesting some biking is for poseurs and...
Forum: Classic & Vintage
09-18-24, 08:08 PM
Replies: 20
Views: 496
Posted By Kontact

The last several years I have been experimenting...

The last several years I have been experimenting a lot with friction. Mostly with 8 speed Hyperglide.

The derailleur, shifter and derailleur B screw adjustment all matter a ridiculous amount....
Forum: Bicycle Mechanics
09-18-24, 07:49 PM
Replies: 59
Views: 1,667
Posted By Kontact

What I read is someone who wrote about their bad...

What I read is someone who wrote about their bad experience with 1x - which is likely based on a poorly maintained bike. I don't have any strong opinion as to their motivations for posting - that...
Forum: Bicycle Mechanics
09-18-24, 08:28 AM
Replies: 11
Views: 208
Posted By Kontact

Run the chain as is. Next time, use small small. ...

Run the chain as is. Next time, use small small.

Since the chain only touches half a cassette cog, the difference between 28 and 32 is actually just 2, which is why the old chain is close enough.
Forum: Road Cycling
09-18-24, 06:40 AM
Replies: 17
Views: 659
Posted By Kontact

Shorten it until your hands are directly under...

Shorten it until your hands are directly under your shoulders. If you keep moving your hands closer to the center, your body goes down again because your arms are again at an angle.
Forum: Bicycle Mechanics
09-17-24, 08:43 PM
Replies: 10
Views: 369
Posted By Kontact

This method is by no means universal to bladed...

This method is by no means universal to bladed spoke wheels. Some will definitely get screwed up trying this.

Spoke holders have their place.
Forum: Bicycle Mechanics
09-17-24, 07:56 PM
Replies: 59
Views: 1,667
Posted By Kontact

Because you adults can't help yourselves.

Because you adults can't help yourselves.
Forum: Bicycle Mechanics
09-17-24, 07:02 PM
Replies: 59
Views: 1,667
Posted By Kontact

I see the wisdom of the OP - he is smart enough...

I see the wisdom of the OP - he is smart enough to not follow up with any of you.
Forum: Bicycle Mechanics
09-17-24, 09:18 AM
Replies: 38
Views: 1,283
Posted By Kontact

If it starts loose, damages the crank and is also...

If it starts loose, damages the crank and is also tightening itself as pedals are supposed to, that would explain how a pedal becomes harder to remove compared to a really tight pedal that never...
Forum: Bicycle Mechanics
09-17-24, 12:23 AM
Replies: 5
Views: 197
Posted By Kontact

Ritchey lists 49mm on even their rim brake frame...

Ritchey lists 49mm on even their rim brake frame that only takes 30mm tires.

I would ask them if it is a typo. Road cranks don't come in 49mm chainline.
Forum: Bicycle Mechanics
09-16-24, 10:52 PM
Replies: 5
Views: 197
Posted By Kontact

Why do you want to use a different chainline than...

Why do you want to use a different chainline than what is intended for a road bike with a 68mm BB shell? Why don't you stick with the industry chainlines instead of inventing your own solution? GRX...
Forum: Bicycle Mechanics
09-16-24, 10:42 PM
Replies: 38
Views: 1,283
Posted By Kontact

And I have yet to encounter a high mileage bike...

And I have yet to encounter a high mileage bike that is otherwise cared for that I can't get the pedals or BB cups unscrewed with a wrench. I think an awful lot of mechanics' lore involves trying to...
Forum: Bicycle Mechanics
09-16-24, 10:30 PM
Replies: 38
Views: 1,283
Posted By Kontact

To my eye, that is classic loose pedal damage. ...

To my eye, that is classic loose pedal damage.

What I have observed working as a mechanic since 1990 is that a vast number of pedals are barely tight, when they should be very tight. That left arm...
Forum: Bicycle Mechanics
09-16-24, 09:40 PM
Replies: 12
Views: 266
Posted By Kontact

It will work perfectly. 10 speed road is the same...

It will work perfectly. 10 speed road is the same geometry as 7 speed.
Forum: Bicycle Mechanics
09-16-24, 08:41 PM
Replies: 38
Views: 1,283
Posted By Kontact

I've never seen that, other than on bikes where...

I've never seen that, other than on bikes where the pedals weren't tightened enough. Washers should be reserved for fixing fitting problems.

You can look at tons of used cranks on ebay and not see...
Forum: Classic & Vintage
09-16-24, 06:59 PM
Replies: 31
Views: 595
Posted By Kontact

There have been many Celeste versions over the...

There have been many Celeste versions over the years - some quite blue compared to the ubiquitous color from the '80s.

My screen shifts between blue and green depending on the angle. Which may be...
Forum: Bicycle Mechanics
09-16-24, 06:53 PM
Replies: 38
Views: 1,283
Posted By Kontact

Ideally for low temp bicycle applications, the...

Ideally for low temp bicycle applications, the best choice for aluminum with either Ti or carbon would be a zinc or magnesium base anti-seize that would act as a sacrificial anode.

Galling is not...
Forum: Bicycle Mechanics
09-15-24, 01:31 PM
Replies: 15
Views: 336
Posted By Kontact

Maybe your framebuilder can explain what...

Maybe your framebuilder can explain what components you need?
Forum: Bicycle Mechanics
09-15-24, 12:44 PM
Replies: 50
Views: 1,747
Posted By Kontact

I'm surprised no one pointed out that the slotted...

I'm surprised no one pointed out that the slotted stop that the noodle goes through is bent.
Forum: Bicycle Mechanics
09-15-24, 12:36 PM
Replies: 40
Views: 846
Posted By Kontact

Front QR axles are 9mm x 100mm, not 10mm.

Front QR axles are 9mm x 100mm, not 10mm.
Forum: Classic & Vintage
09-15-24, 12:30 PM
Replies: 18
Views: 397
Posted By Kontact

Those aren't the monoplaners. Monoplaners have...

Those aren't the monoplaners. Monoplaners have the barrel adjuster arm pass through the brake pad arm.
Forum: Touring
09-15-24, 11:42 AM
Replies: 8
Views: 240
Posted By Kontact

You could also use something like RTV or Shoe Goo...

You could also use something like RTV or Shoe Goo to seal up the exposed area.
Forum: Classic & Vintage
09-15-24, 11:35 AM
Replies: 18
Views: 397
Posted By Kontact

That is a Shimano rear derailleur, an '80s set of...

That is a Shimano rear derailleur, an '80s set of Athena brake calipers, '70s shifters (not Athena), '90s crankset (also not Athena) and super cheap Dia Compe brake levers. There are no parts on this...
Forum: Classic & Vintage
09-15-24, 12:19 AM
Replies: 18
Views: 397
Posted By Kontact

Cannondale had a Athena bike in '90. What...

Cannondale had a Athena bike in '90.

What bike are you referring to that is mostly a Campy group except for Suntour derailleurs? The white bike is a mish mash of parts from several eras and...
Forum: Bicycle Mechanics
09-14-24, 10:30 PM
Replies: 17
Views: 375
Posted By Kontact

Cutting CF posts is something I did on at least...

Cutting CF posts is something I did on at least half the Cervelo P series bikes we sold. I don't see the advantage in buying a 300mm when you have a good post in hand.
Forum: Bicycle Mechanics
09-14-24, 10:23 PM
Replies: 40
Views: 846
Posted By Kontact

Considering that 12mm TAs commonly one of three...

Considering that 12mm TAs commonly one of three threads, and fasteners are generally either course or fine threads, I wouldn't count on that working. But I could certainly be wrong.
Forum: Bicycle Mechanics
09-14-24, 10:20 PM
Replies: 38
Views: 1,283
Posted By Kontact

I pulled some aluminum BB cups out of little...

I pulled some aluminum BB cups out of little ridden 12 year old Merlin where the threads were half powder. I couldn't see any reason for that aside from galvanic action.
Forum: Road Cycling
09-14-24, 06:30 PM
Replies: 17
Views: 659
Posted By Kontact

I don't see why it would. The shortest distance...

I don't see why it would. The shortest distance from your shoulder to the bar is a straight line - which is when the bar is shoulder width. Narrower bars means an angled arm, which is shorter.
Forum: Bicycle Mechanics
09-14-24, 05:58 PM
Replies: 40
Views: 846
Posted By Kontact

Yes, it includes metric and inch reference rulers.

Yes, it includes metric and inch reference rulers.
Forum: Bicycle Mechanics
09-14-24, 03:19 PM
Replies: 40
Views: 846
Posted By Kontact

I'm a little puzzled, looking at Robert, how you...

I'm a little puzzled, looking at Robert, how you measure an axle with a tapered wrench end.
Forum: Bicycle Mechanics
09-14-24, 11:04 AM
Replies: 40
Views: 846
Posted By Kontact

He bought some forks that need TAs because they...

He bought some forks that need TAs because they didn't come with any.
Forum: Bicycle Mechanics
09-14-24, 11:01 AM
Replies: 15
Views: 336
Posted By Kontact

The frame BB has longer thread or the cups have...

The frame BB has longer thread or the cups have longer thread? Either way, the cups should fit. Sometimes the threads in the frame don't go deep, but it doesn't interfere with the cups.

You can't...
Forum: Bicycle Mechanics
09-14-24, 09:08 AM
Replies: 15
Views: 336
Posted By Kontact

That's called an external cup BB, and they are...

That's called an external cup BB, and they are used with specific cranks. They should work on bikes with English/BSA threads as that is what they were designed for.

You have a '90s frame with a...
Forum: Bicycle Mechanics
09-14-24, 09:02 AM
Replies: 40
Views: 846
Posted By Kontact

I'm saying to use a piece of wax to get an...

I'm saying to use a piece of wax to get an impression of the inside length on one side of the threaded hole, not the hole diameter. So you would get a "TPI" impression that you can match up against...
Forum: Classic & Vintage
09-13-24, 08:20 PM
Replies: 2
Views: 233
Posted By Kontact

Link doesn't open without a login. What is it?

Link doesn't open without a login. What is it?
Forum: Bicycle Mechanics
09-13-24, 08:16 PM
Replies: 40
Views: 846
Posted By Kontact

If I had to figure out a fork, I'd print that...

If I had to figure out a fork, I'd print that sheet Robert has on their site and use a softened candle to get an inside impression of the threads.
Forum: Bicycle Mechanics
09-13-24, 07:08 PM
Replies: 10
Views: 369
Posted By Kontact

You can unwarp steel spokes. The twist is usually...

You can unwarp steel spokes. The twist is usually distributed over a lot of length.
Forum: Classic and Vintage Sales
09-13-24, 07:00 PM
Replies: 3
Views: 300
Posted By Kontact

Or live in Florida.

Or live in Florida.
Forum: Bicycle Mechanics
09-13-24, 06:12 PM
Replies: 40
Views: 846
Posted By Kontact

They actually do have a method for measuring...

They actually do have a method for measuring axles and their thread. Metric or imperial. But not necessarily as easy if you only have a fork.

If all TA bikes were metal, there wouldn't be many...
Forum: Bicycle Mechanics
09-12-24, 09:33 PM
Replies: 40
Views: 846
Posted By Kontact

It isn't a specification. If you have a Wound Up...

It isn't a specification. If you have a Wound Up fork, you get TA for that model.

Or are you saying you have three forks that you don't know what brand they are or what brand the frame they came...
Forum: Classic and Vintage Bicycles: Whats it Worth? Appraisals.
09-12-24, 09:28 PM
Replies: 15
Views: 583
Posted By Kontact

The alloy fork is a nice touch.

The alloy fork is a nice touch.
Forum: Bicycle Mechanics
09-12-24, 08:22 PM
Replies: 40
Views: 846
Posted By Kontact

It is best to view TAs as proprietary frame parts...

It is best to view TAs as proprietary frame parts - just like derailleur hangers. So you buy the one that is documented as intended for that specific frame.
Forum: Bicycle Mechanics
09-12-24, 05:07 PM
Replies: 13
Views: 347
Posted By Kontact

The heavy force on both Di2 and cable is shifting...

The heavy force on both Di2 and cable is shifting to the big ring. But the tension put on the main mount by the support brace preload is going to stiffen the derailleur for the downshift as well.
...
Forum: Bicycle Mechanics
09-12-24, 06:21 AM
Replies: 13
Views: 347
Posted By Kontact

If they are on Di2 derailleurs, they are needed.

If they are on Di2 derailleurs, they are needed.
Forum: Bicycle Mechanics
09-12-24, 06:17 AM
Replies: 38
Views: 972
Posted By Kontact

Except this is a Shimano problem. SRAM and Campy...

Except this is a Shimano problem. SRAM and Campy brifters don't damage cabling so quickly and predictably. It has nothing to do with internal routed framesets.
Forum: Bicycle Mechanics
09-11-24, 10:46 PM
Replies: 38
Views: 972
Posted By Kontact

Here's a car analogy. Shimano shifters eat...

Here's a car analogy. Shimano shifters eat cables, and have been for 30 years. And it used to be as easy as changing oil to slip new ones in. But now you have a fancy internal cable bike with 1990...
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