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Search: Posts Made By: Kontact
Showing results 1 to 50 of 1000
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Forum: Framebuilders
05-22-24, 08:50 PM
Replies: 12
Views: 227
Posted By Kontact

Normally with track bikes you have to center the...

Normally with track bikes you have to center the wheel in the chainstays by adjusting where in the horizontal dropouts you tighten the bolts down. How does that not apply to your bike?
...
Forum: Bicycle Mechanics
05-22-24, 07:16 PM
Replies: 23
Views: 410
Posted By Kontact

I don't see a quick link in your Rival photo. ...

I don't see a quick link in your Rival photo.

Do you have the ability to try a SRAM road 12 link in a different chain?
Forum: Fitting Your Bike
05-22-24, 05:36 PM
Replies: 25
Views: 652
Posted By Kontact

There is no perfect math equation for this. The...

There is no perfect math equation for this. The easiest thing is to look at the website of the brand and check the recommendations based on height.

In general, if the sizes are "classic", you can...
Forum: Classic & Vintage
05-21-24, 05:52 PM
Replies: 5
Views: 148
Posted By Kontact

$8: ...

$8:
...
Forum: Framebuilders
05-21-24, 05:49 PM
Replies: 12
Views: 227
Posted By Kontact

That's what I figured, but wanted to ask in case...

That's what I figured, but wanted to ask in case the secret framebuilder coven had a better solution.
Forum: Classic and Vintage Sales
05-21-24, 05:46 PM
Replies: 2
Views: 160
Posted By Kontact

I'll take em!

I'll take em!
Forum: Framebuilders
05-21-24, 01:01 PM
Replies: 12
Views: 227
Posted By Kontact

Once the top has been opened with a file, can one...

Once the top has been opened with a file, can one close up the bottom via bending?
Forum: Fitting Your Bike
05-20-24, 09:42 PM
Replies: 5
Views: 153
Posted By Kontact

Stack or stack+ is just a vertical measure. But...

Stack or stack+ is just a vertical measure. But reach is goofy because it relates to stuff that is constantly modified by the angled steerer when you compare two bikes, raise your stem, etc.
Forum: Classic & Vintage
05-20-24, 08:10 PM
Replies: 17
Views: 483
Posted By Kontact

Wait until you guys come across a 25.8 stem!

Wait until you guys come across a 25.8 stem!
Forum: Fitting Your Bike
05-20-24, 04:58 PM
Replies: 5
Views: 153
Posted By Kontact

It's correct because the steerer angles back 73...

It's correct because the steerer angles back 73 degrees, so you lose 3cm horizontally for every 10cm of height.
Forum: Fitting Your Bike
05-20-24, 01:56 PM
Replies: 25
Views: 652
Posted By Kontact

Stack and reach are new. Size is generally a...

Stack and reach are new. Size is generally a number based on real or effective seat tube length, and that serves the same purpose as a shoe or jacket size.
Forum: Bicycle Mechanics
05-20-24, 10:46 AM
Replies: 16
Views: 371
Posted By Kontact

The rotor looks upside down. Flip it and see if...

The rotor looks upside down. Flip it and see if that helps.
Forum: Classic & Vintage
05-19-24, 10:16 PM
Replies: 3
Views: 159
Posted By Kontact

These should work, 144.7 | Diacompe...

These should work,
144.7 | Diacompe (http://www.diacompe.com.tw/product/144-7/)

since they are compatible with these adjusters:
CABLE ADJUST BOLT | Diacompe...
Forum: Bicycle Mechanics
05-19-24, 09:42 PM
Replies: 23
Views: 410
Posted By Kontact

I have my doubts that this is going to work....

I have my doubts that this is going to work. While I can't find X12E on the KMC website, it does say that that the X12 chain is not Flattop compatible, but only Eagle compatible. So I would expect...
Forum: Framebuilders
05-19-24, 09:07 PM
Replies: 52
Views: 2,174
Posted By Kontact

Well, at least there doesn't seem to be anyone...

Well, at least there doesn't seem to be anyone that believes that welding can make steel less rigid.
Forum: Framebuilders
05-19-24, 11:41 AM
Replies: 52
Views: 2,174
Posted By Kontact

Steel frames can and do wear out from fatigue....

Steel frames can and do wear out from fatigue. And not at the join. Often several inches back on the right chainstay.

But until they fail, they don't feel different or flex differently.
Forum: Classic & Vintage
05-19-24, 12:18 AM
Replies: 62
Views: 1,428
Posted By Kontact

I recently build a Douglas Ti frame with a silver...

I recently build a Douglas Ti frame with a silver Speedlight, Mavic, Modolo, Sram and Simplex. Love those cranks.
Forum: Classic & Vintage
05-19-24, 12:14 AM
Replies: 35
Views: 1,330
Posted By Kontact

Where did I disagree that Passoni doesn't use a...

Where did I disagree that Passoni doesn't use a chamber? Quote me.

What is odd is that you claim via quote that weld chambers are for "high quality bicycle frames". Then you go on to talk about...
Forum: Classic & Vintage
05-18-24, 06:06 PM
Replies: 62
Views: 1,428
Posted By Kontact

If they are 7400, they match, unless you really...

If they are 7400, they match, unless you really aren't paying attention.



I am doing exactly the same right now. Had a 7410 crank for awhile, came across DA shifters and remembered seeing a...
Forum: Classic & Vintage
05-18-24, 04:44 PM
Replies: 17
Views: 483
Posted By Kontact

No, it's like saying the $15.75 rounds to $15. In...

No, it's like saying the $15.75 rounds to $15. In the engineering sense.
Forum: Classic & Vintage
05-18-24, 04:39 PM
Replies: 62
Views: 1,428
Posted By Kontact

There are no real compatibility issues. 7400...

There are no real compatibility issues. 7400 would work on any racing style bike with rim brakes since at least 1978. Of which there are plenty, and they are still made.
Forum: Classic & Vintage
05-18-24, 04:36 PM
Replies: 35
Views: 1,330
Posted By Kontact

Vacuum brazing, apparently.

Vacuum brazing, apparently.
Forum: Classic & Vintage
05-18-24, 02:38 PM
Replies: 35
Views: 1,330
Posted By Kontact

SLX was the thinnest wall of the standard...

SLX was the thinnest wall of the standard diameter tubing in the "test", so there is not a lot of comparison to be seen except that a standard 753 frame is going to be comparably very flexible...
Forum: Fitting Your Bike
05-18-24, 09:02 AM
Replies: 11
Views: 187
Posted By Kontact

But he doesn't have all those dimensions.

But he doesn't have all those dimensions.
Forum: Classic & Vintage
05-18-24, 08:47 AM
Replies: 35
Views: 1,330
Posted By Kontact

Did you write this page as well, or just copy it...

Did you write this page as well, or just copy it word for word?
https://titaniumbicycles.wordpress.com/2012/07/04/titanium-frames-welding-techniques/

It has pictures of someone welding in the...
Forum: Classic & Vintage
05-17-24, 10:34 PM
Replies: 35
Views: 1,330
Posted By Kontact

All welded Ti frames have the tubes filled with...

All welded Ti frames have the tubes filled with argon internally as well as from the welder.

Which builder welds frames in a chamber? Name one.


This frankly reads like an AI wrote it.
Forum: Fitting Your Bike
05-17-24, 08:53 PM
Replies: 11
Views: 187
Posted By Kontact

You have enough information to duplicate the...

You have enough information to duplicate the horizontal reach, and then it is just question of playing with bar height until that fits. If you remember your stem length and how your setback was...
Forum: Fitting Your Bike
05-17-24, 08:37 PM
Replies: 11
Views: 187
Posted By Kontact

Because you don't have the head tube height or...

Because you don't have the head tube height or the top tube slope, there is not enough information to determine where the top of the head tube is.

There are other methods to compare fit that are...
Forum: Fitting Your Bike
05-17-24, 08:22 PM
Replies: 31
Views: 660
Posted By Kontact

Moving the seat to the rear and rechecking saddle...

Moving the seat to the rear and rechecking saddle height is absolutely the solution to having too much weight on your hands. And doing so has nothing to do with your leg muscles any more than...
Forum: Fitting Your Bike
05-17-24, 10:13 AM
Replies: 25
Views: 652
Posted By Kontact

It's either a 47 or a 50. Either is okay for your...

It's either a 47 or a 50. Either is okay for your body size.

If you want a larger looking bike, you don't need a number to prove that it's alright to buy one.
Forum: Bicycle Mechanics
05-16-24, 10:33 PM
Replies: 50
Views: 1,095
Posted By Kontact

You can go on ebay and buy 60 year old aluminum...

You can go on ebay and buy 60 year old aluminum cranks that show zero galling from decades steel pedal use. That is not an actual problem.

Your crank wasn't coming loose because the bolt was...
Forum: Bicycle Mechanics
05-16-24, 09:13 PM
Replies: 50
Views: 1,095
Posted By Kontact

The dry blue stuff that comes on things like...

The dry blue stuff that comes on things like thread bolts never cures - it is just there for traction.

When is the hold on properly installed and torqued bike parts ever an issue? Have you had...
Forum: Bicycle Mechanics
05-16-24, 07:31 PM
Replies: 50
Views: 1,095
Posted By Kontact

Most bolts with blue stuff on them is not...

Most bolts with blue stuff on them is not loctite, it is that stuff that dries in the air and acts like a piece of chewing gum.

You can't get galvanic corrosion mounting aluminum rings on aluminum...
Forum: Bicycle Mechanics
05-16-24, 07:25 PM
Replies: 37
Views: 1,056
Posted By Kontact

I was talking about Bicycle Mechanics subforum -...

I was talking about Bicycle Mechanics subforum - which should be a place you can get solid, factual information.

We already have the Advocacy and Safety sub for people who like to talk about how...
Forum: Bicycle Mechanics
05-16-24, 07:07 PM
Replies: 50
Views: 1,095
Posted By Kontact

I don't know how old that could be - bikes used...

I don't know how old that could be - bikes used only grease and oil until very recently.

Point being - your bolts wouldn't have made any noise in the first place had they been tightened with a...
Forum: Classic and Vintage Sales
05-16-24, 07:00 PM
Replies: 15
Views: 537
Posted By Kontact

Sure. Got to find them!

Sure. Got to find them!
Forum: Bicycle Mechanics
05-16-24, 04:58 PM
Replies: 50
Views: 1,095
Posted By Kontact

Even if they have the dried blue blob, I grease...

Even if they have the dried blue blob, I grease the threads.
Forum: Bicycle Mechanics
05-16-24, 04:48 PM
Replies: 37
Views: 1,056
Posted By Kontact

The Park tool with the red handles is too big?

The Park tool with the red handles is too big?
Forum: Bicycle Mechanics
05-16-24, 04:46 PM
Replies: 50
Views: 1,095
Posted By Kontact

Where they greased?

Where they greased?
Forum: Fitting Your Bike
05-16-24, 04:33 PM
Replies: 6
Views: 250
Posted By Kontact

Is the leg length in the femur or shin? Shin gets...

Is the leg length in the femur or shin? Shin gets shims, femurs get cleats moved fore/aft.
Forum: Fitting Your Bike
05-16-24, 11:27 AM
Replies: 25
Views: 652
Posted By Kontact

Effective seat tube length is used by...

Effective seat tube length is used by manufacturers, but it isn't a useful measure of a random bike because of the huge difference in stack height/HT length. So you can't derive it.

ETT is useful...
Forum: Bicycle Mechanics
05-16-24, 10:46 AM
Replies: 50
Views: 1,095
Posted By Kontact

Grease the mechanism, put carbon paste where it...

Grease the mechanism, put carbon paste where it touches the steerer.
Forum: Bicycle Mechanics
05-15-24, 10:51 PM
Replies: 50
Views: 1,095
Posted By Kontact

Check the front end. I had a "BB creak" that was...

Check the front end. I had a "BB creak" that was a stem.
Forum: Bicycle Mechanics
05-15-24, 10:47 PM
Replies: 14
Views: 335
Posted By Kontact

How did you have a fork without a starnut before...

How did you have a fork without a starnut before you removed it for service?

Is it a shock fork or disc brakes? You can't do the rock test with either. Turn the wheel 90 degrees.
Forum: Classic & Vintage
05-15-24, 07:07 PM
Replies: 14
Views: 3,173
Posted By Kontact

I would try emailing Mercian Cycles. I got some...

I would try emailing Mercian Cycles. I got some '80s Mavic derailleur parts from them last year.
Forum: Commuting
05-15-24, 06:56 PM
Replies: 13
Views: 454
Posted By Kontact

Buy $5 plastic pedals and tape them to the top of...

Buy $5 plastic pedals and tape them to the top of your metal pedals.
Forum: Fitting Your Bike
05-15-24, 06:39 PM
Replies: 25
Views: 652
Posted By Kontact

Bikes with horizontal TTs had the seat tube...

Bikes with horizontal TTs had the seat tube measured center of the BB to the top of the top tube intersection, or to the center of the top tube intersection. Measuring to the top of the clamp...
Forum: Fitting Your Bike
05-15-24, 12:42 PM
Replies: 25
Views: 652
Posted By Kontact

Seems like a good size for you. If it is feeling...

Seems like a good size for you. If it is feeling a little short horizontally, slide the seat back a bit or replace the stem with a longer one



You can't measure effective seat tube length.
...
Forum: Classic and Vintage Sales
05-15-24, 12:21 PM
Replies: 15
Views: 537
Posted By Kontact

I have a black Sprint and matching black Power...

I have a black Sprint and matching black Power Ratchet shifters.
Forum: Fitting Your Bike
05-15-24, 06:16 AM
Replies: 25
Views: 652
Posted By Kontact

That's a very small bike, appropriate for someone...

That's a very small bike, appropriate for someone maybe 5'2" or so from the looks of it.

The closest thing to a measurable size would be the Effective Top Tube length, shown here:...
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