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Search: Posts Made By: Kontact
Showing results 1 to 50 of 1000
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Forum: Bicycle Mechanics
05-11-24, 05:31 PM
Replies: 14
Views: 125
Posted By Kontact

At this point you can choose to hone the seat...

At this point you can choose to hone the seat tube to accommodate this post, or decide that the frame works very well with most other posts and move on from the Ti one. You may get to a point where...
Forum: Bicycle Mechanics
05-11-24, 04:40 PM
Replies: 14
Views: 125
Posted By Kontact

You're rude and frequently wrong. Get those...

You're rude and frequently wrong.

Get those three beers in the mail yet?
Forum: Bicycle Mechanics
05-11-24, 02:18 PM
Replies: 14
Views: 125
Posted By Kontact

Cannondale never made a 27.0 bike, but if an...

Cannondale never made a 27.0 bike, but if an undersized post made it into the frame, the result is not going to be solved by reaming. So it is far better to know what happened by checking the old...
Forum: Bicycle Mechanics
05-11-24, 02:08 PM
Replies: 18
Views: 263
Posted By Kontact

Given that the T11 hub has a bearing play...

Given that the T11 hub has a bearing play adjustment, I have to wonder if it was adjusted incorrectly at some point.
Forum: Bicycle Mechanics
05-11-24, 02:00 PM
Replies: 14
Views: 125
Posted By Kontact

Instead of assuming, the OP could measure his old...

Instead of assuming, the OP could measure his old post before modifying the frame, since he clearly has a caliper.


Once the OP has established that his old post was in the 27.2 ballpark...
Forum: Bicycle Mechanics
05-11-24, 01:54 PM
Replies: 70
Views: 1,343
Posted By Kontact

My first response to you was to address two of...

My first response to you was to address two of your points about the nebulous value of waxing that you had mentioned.

And then I added a third objection that people make, and also addressed it. I...
Forum: Classic & Vintage
05-11-24, 01:05 PM
Replies: 14
Views: 249
Posted By Kontact

I find hardware stores much more organized and...

I find hardware stores much more organized and better labeled when it comes to screw types than the usual mixed up bins in bike shops.
Forum: Classic & Vintage
05-11-24, 12:57 PM
Replies: 160
Views: 25,923
Posted By Kontact

Those wing nuts make me feel sad.

Those wing nuts make me feel sad.
Forum: Bicycle Mechanics
05-11-24, 11:58 AM
Replies: 70
Views: 1,343
Posted By Kontact

The fact I'm pointing out is that the objection...

The fact I'm pointing out is that the objection to wax - that you have to set aside 15 minutes or more to re-lube - doesn't actually amount to anything because you put oil on the waxed chain if you...
Forum: Bicycle Mechanics
05-11-24, 11:53 AM
Replies: 18
Views: 260
Posted By Kontact

I learned to work on bikes by reading Bicycling...

I learned to work on bikes by reading Bicycling Magazine's Complete Guide to Bicycle Mechanics and fixing or upgrading my bikes. I find books much easier to deal with than computers and videos. Your...
Forum: Bicycle Mechanics
05-11-24, 11:47 AM
Replies: 10
Views: 181
Posted By Kontact

Sounds like change for change's sake. Unless...

Sounds like change for change's sake. Unless there is something you need, why screw with a good thing?
Forum: Bicycle Mechanics
05-11-24, 11:44 AM
Replies: 70
Views: 1,343
Posted By Kontact

And then we are back to the fact that the waxed...

And then we are back to the fact that the waxed chain doesn't pick up dirt as much, requiring less cleaning in the first place and that the re-wax is the re-clean.

So there isn't much to argue...
Forum: Bicycle Mechanics
05-11-24, 11:38 AM
Replies: 15
Views: 213
Posted By Kontact

Tighten the valve core. ...

Tighten the valve core.

https://cimg3.ibsrv.net/gimg/bikeforums.net-vbulletin/1200x1200/image_cfc46fb53c451b99cf1be281d65380aa13e24ea9.png
Forum: Bicycle Mechanics
05-11-24, 11:29 AM
Replies: 14
Views: 125
Posted By Kontact

What does the old seat post measure?

What does the old seat post measure?
Forum: Classic & Vintage
05-11-24, 11:24 AM
Replies: 14
Views: 249
Posted By Kontact

I'm sorry we don't seem to be communicating. The...

I'm sorry we don't seem to be communicating. The stem is threaded, so no backing nut or anything else with female thread is needed.

All the OP needs is one M5 socket head stainless screw in the...
Forum: Bicycle Mechanics
05-11-24, 08:58 AM
Replies: 3
Views: 55
Posted By Kontact

Follow this 2X video. Tell us what is happening...

Follow this 2X video. Tell us what is happening that is different than the video.
https://support.sram.com/hc/en-us/articles/6030638484507-How-do-I-pair-my-AXS-components-together

Are both...
Forum: Classic & Vintage
05-11-24, 08:15 AM
Replies: 14
Views: 249
Posted By Kontact

The stem is threaded.

The stem is threaded.
Forum: Classic & Vintage
05-10-24, 08:11 PM
Replies: 160
Views: 25,923
Posted By Kontact

https://cimg6.ibsrv.net/gimg/bikeforums.net-vbulle...

https://cimg6.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1364/zunow_z1_123111_11_5034ffc9b15c1a0e38f29f7674f341c65de4d235.jpg

Not my shifters, but I love the weirdo 75 group!

Looks like a...
Forum: Bicycle Mechanics
05-10-24, 07:29 PM
Replies: 88
Views: 2,580
Posted By Kontact

rosefarts What kind of beer are you requesting?

rosefarts What kind of beer are you requesting?
Forum: Classic & Vintage
05-10-24, 07:22 PM
Replies: 8
Views: 327
Posted By Kontact

A budget choice in new 9 speed index shifters are...

A budget choice in new 9 speed index shifters are these things by Sunrace.
...
Forum: Bicycle Mechanics
05-10-24, 07:07 PM
Replies: 27
Views: 506
Posted By Kontact

Maybe the wheel was laced 4 cross originally?

Maybe the wheel was laced 4 cross originally?
Forum: Bicycle Mechanics
05-10-24, 07:00 PM
Replies: 17
Views: 351
Posted By Kontact

Self extracting bolts like this were made before...

Self extracting bolts like this were made before Campy by Shimano and after by everyone - all in RH thread. Campy chose to make things weird with left hand thread and 7mm wrench size. But LH should...
Forum: Bicycle Mechanics
05-10-24, 07:34 AM
Replies: 27
Views: 506
Posted By Kontact

36 hole wheels are sometimes laced 4 cross...

36 hole wheels are sometimes laced 4 cross instead of 3. If you throw some average parts into a spoke calc program you can see approximately how much difference there is between 3x and 4x in final...
Forum: Bicycle Mechanics
05-10-24, 07:24 AM
Replies: 17
Views: 351
Posted By Kontact

Which years are they not left?

Which years are they not left?
Forum: Classic & Vintage
05-09-24, 10:56 PM
Replies: 8
Views: 327
Posted By Kontact

The Ene, Silver, etc are all products made by Dia...

The Ene, Silver, etc are all products made by Dia Compe based on the Suntour Sprint ratchet shifter. There are two of normal diameter and one oversized. Because the shifters have a little backlash in...
Forum: Bicycle Mechanics
05-09-24, 05:33 PM
Replies: 88
Views: 2,580
Posted By Kontact

This clearly didn't happen. And if it did, a...

This clearly didn't happen. And if it did, a horrendous crash will likely occur.


(Nice work!)
Forum: Bicycle Mechanics
05-09-24, 01:38 AM
Replies: 57
Views: 1,319
Posted By Kontact

Galling is caused by cold welding. It doesn't say...

Galling is caused by cold welding. It doesn't say it can be welded all on its own.

Find a science or industry picture of a chunk of metal cold welded to another.
Forum: Classic & Vintage
05-08-24, 06:26 PM
Replies: 11
Views: 351
Posted By Kontact

You'll want a Campy 8 or first gen 9. Later 9...

You'll want a Campy 8 or first gen 9. Later 9 speed had a different pull ratio. Late Sachs derailleurs should also work.
Forum: Classic & Vintage
05-08-24, 07:24 AM
Replies: 27
Views: 743
Posted By Kontact

The rust marks on the spindle do look a bit like...

The rust marks on the spindle do look a bit like the crank was bottomed out on the shoulder past the taper.
Forum: Bicycle Mechanics
05-08-24, 06:27 AM
Replies: 57
Views: 1,319
Posted By Kontact

The "cold welding" described in the article is an...

The "cold welding" described in the article is an explanation of what happens that causes metal to tear away, not be permanently deposited. It is a description of how surface friction can briefly...
Forum: Road Cycling
05-07-24, 08:30 PM
Replies: 88
Views: 2,572
Posted By Kontact

Why not contact Trek and point out how much extra...

Why not contact Trek and point out how much extra they charge for weight loss, and how overweight your bike is?

At the very least you might get some free stuff.
Forum: Classic & Vintage
05-07-24, 08:27 PM
Replies: 14
Views: 249
Posted By Kontact

The hardware store. Probably 5mm. Get the closest...

The hardware store. Probably 5mm. Get the closest length in stainless.
Forum: Bicycle Mechanics
05-07-24, 08:24 PM
Replies: 17
Views: 351
Posted By Kontact

This one is specifically for extractor rings and...

This one is specifically for extractor rings and dust caps.
https://www.parktool.com/en-us/product/pin-spanner-red-spa-2?category=Crank+%26+Bottom+Bracket

You're aware it is reverse threaded,...
Forum: Bicycle Mechanics
05-07-24, 08:12 PM
Replies: 57
Views: 1,319
Posted By Kontact

Imagine you are grinding aluminum, but you're...

Imagine you are grinding aluminum, but you're doing it with small bits held in your bare fingers. You can't heat a piece of metal up so much while holding it with a piece of rubber. The rubber will...
Forum: Bicycle Mechanics
05-07-24, 05:53 PM
Replies: 70
Views: 1,343
Posted By Kontact

Keep in mind the ritual is a bit overstated. You...

Keep in mind the ritual is a bit overstated. You can hot wax a chain in 15 minutes using a small sauce pan without any prior cleaning. That is about 15 times longer than it takes to oil a chain, but...
Forum: Bicycle Mechanics
05-07-24, 05:47 PM
Replies: 57
Views: 1,319
Posted By Kontact

Galling does not bind material permanently to...

Galling does not bind material permanently to rims. Galling is when the friction forces are great enough to bust some material loose or partially loose and possibly smear that partially attached...
Forum: Bicycle Mechanics
05-06-24, 08:46 PM
Replies: 57
Views: 1,319
Posted By Kontact

They aren't welded to anything. They are chunks...

They aren't welded to anything. They are chunks stuck in a hole.
Forum: Bicycle Mechanics
05-06-24, 06:21 AM
Replies: 57
Views: 1,319
Posted By Kontact

Because you can't imagine that a rim with a flat...

Because you can't imagine that a rim with a flat spot might bulged in the process, and keep recommending against doing to minimum safety inspection of removing the tire.
Forum: Classic & Vintage
05-05-24, 10:12 PM
Replies: 27
Views: 743
Posted By Kontact

I had assumed the crank is cracked where it goes...

I had assumed the crank is cracked where it goes on the BB spindle.
Forum: Bicycle Mechanics
05-05-24, 10:03 PM
Replies: 57
Views: 1,319
Posted By Kontact

Again, I have to disagree. You can't assess the...

Again, I have to disagree. You can't assess the remaining thickness of a possibly bulged rim without looking at the inside of the bulge.

And you may see the inside of the damage seen on the...
Forum: Bicycle Mechanics
05-05-24, 08:19 PM
Replies: 16
Views: 299
Posted By Kontact

There's also a lot of absurd on youtube.

There's also a lot of absurd on youtube.
Forum: Bicycle Mechanics
05-05-24, 08:07 PM
Replies: 16
Views: 299
Posted By Kontact

That's absurd. The rear derailleur has no idea...

That's absurd. The rear derailleur has no idea what rings you're using, the first two are both 16t splits and the last only 14t. Of course the 53-39 works. It just might need an extra link longer...
Forum: Bicycle Mechanics
05-05-24, 05:30 PM
Replies: 57
Views: 1,319
Posted By Kontact

You didn't address anyone specifically. I...

You didn't address anyone specifically.

I don't know what my post count is. I participate on this forum because I enjoy bikes and helping people with mechanical problems.

I won't ignore your...
Forum: Bicycle Mechanics
05-05-24, 05:17 PM
Replies: 57
Views: 1,319
Posted By Kontact

You are using the word "look", but not at...

You are using the word "look", but not at anything you can "see". Thank you for the brusque correction.

I don't think anyone, including the OP, actually is concerned with the flat spot's effect on...
Forum: Bicycle Mechanics
05-05-24, 03:33 PM
Replies: 57
Views: 1,319
Posted By Kontact

Don't know what you're seeing. The damage is over...

Don't know what you're seeing. The damage is over a spoke hole, not between them.
Forum: Classic & Vintage
05-05-24, 02:33 PM
Replies: 27
Views: 743
Posted By Kontact

Common and undamaged BB. Broken crank. Throw the...

Common and undamaged BB. Broken crank. Throw the crank away.
Forum: Bicycle Mechanics
05-05-24, 02:20 PM
Replies: 57
Views: 1,319
Posted By Kontact

That may well be what happened, but I don't know...

That may well be what happened, but I don't know why you would presume it can't be a safety issue.

The right thing to do is look inside the rim.
Forum: Classic & Vintage
05-05-24, 02:15 PM
Replies: 26
Views: 1,033
Posted By Kontact

I wanted to address how exactly these things...

I wanted to address how exactly these things work, because I think this debate about the screw has something to do with how we understand how they work:
...
Forum: Bicycle Mechanics
05-05-24, 10:51 AM
Replies: 16
Views: 299
Posted By Kontact

What does it look like when you are in the 32x36...

What does it look like when you are in the 32x36 combo? That's usually the problem - the pulley is up against the 32 sprocket.
Forum: Bicycle Mechanics
05-05-24, 10:27 AM
Replies: 57
Views: 1,319
Posted By Kontact

Completely disagree. I have seen this before...

Completely disagree.

I have seen this before - the rim takes vertical hit, the rim bulges out into the brake track, then the brake pads wear down the high spot. Eventually the super thin aluminum...
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