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Search: Posts Made By: Kontact
Showing results 1 to 50 of 1000
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Forum: Bicycle Mechanics
05-20-24, 10:46 AM
Replies: 7
Views: 64
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: 112
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: 16
Views: 233
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: 50
Views: 2,000
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: 50
Views: 2,000
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: 41
Views: 694
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: 1,246
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: 41
Views: 694
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: 11
Views: 315
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: 41
Views: 694
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: 1,246
Posted By Kontact

Vacuum brazing, apparently.

Vacuum brazing, apparently.
Forum: Classic & Vintage
05-18-24, 02:38 PM
Replies: 35
Views: 1,246
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: 159
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: 1,246
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: 1,246
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: 159
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: 159
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: 30
Views: 525
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: 20
Views: 414
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: 46
Views: 847
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: 46
Views: 847
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: 46
Views: 847
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: 38
Views: 967
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: 46
Views: 847
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: 514
Posted By Kontact

Sure. Got to find them!

Sure. Got to find them!
Forum: Bicycle Mechanics
05-16-24, 04:58 PM
Replies: 46
Views: 847
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: 38
Views: 967
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: 46
Views: 847
Posted By Kontact

Where they greased?

Where they greased?
Forum: Fitting Your Bike
05-16-24, 04:33 PM
Replies: 6
Views: 198
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: 20
Views: 414
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: 46
Views: 847
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: 46
Views: 847
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: 303
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: 3,155
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: 11
Views: 364
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: 20
Views: 414
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: 20
Views: 414
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: 514
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: 20
Views: 414
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:...
Forum: Road Cycling
05-14-24, 10:40 PM
Replies: 11
Views: 301
Posted By Kontact

https://www.ebay.com/itm/395025428988?chn=ps&var=6...

https://www.ebay.com/itm/395025428988?chn=ps&var=663604734257&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&mkscid=101&itemid=663604734257_395025428988&targetid=2299003535955&device=c&mktype=pla&...
Forum: Classic & Vintage
05-14-24, 08:20 PM
Replies: 35
Views: 1,246
Posted By Kontact

Titanium as a material is not prone to cracking....

Titanium as a material is not prone to cracking. I have yet to see a cracked ti frame that didn't fail at a weld - likely due to some pollution of that weld.

Steel does fatigue over time. Given a...
Forum: Bicycle Mechanics
05-14-24, 06:32 AM
Replies: 8
Views: 225
Posted By Kontact

What, all of them? How about getting a little...

What, all of them? How about getting a little more specific?
Forum: Bicycle Mechanics
05-13-24, 10:35 PM
Replies: 4
Views: 226
Posted By Kontact

Shimano 11 speed cranks have the chainrings...

Shimano 11 speed cranks have the chainrings spaced further apart, which may make some of the shifter trim features a little off.

But otherwise: Yes.
Forum: Bicycle Mechanics
05-13-24, 10:33 PM
Replies: 38
Views: 967
Posted By Kontact

The Campy ones don't work any different than all...

The Campy ones don't work any different than all the other RH ones, so the fact that they are Campy is "nonsensical". The physics of extracting a crank doesn't change because it came from Italy.
...
Forum: Bicycle Mechanics
05-13-24, 08:15 PM
Replies: 38
Views: 967
Posted By Kontact

Didn't read the thread or see all the cranks with...

Didn't read the thread or see all the cranks with self extracting bolts and RH threads over the last 40 years?
Forum: Bicycle Mechanics
05-13-24, 10:35 AM
Replies: 9
Views: 268
Posted By Kontact

You'll need to refer to the BB instructions that...

You'll need to refer to the BB instructions that match your chosen crank model. Road bikes are never 73.
Forum: Bicycle Mechanics
05-13-24, 06:58 AM
Replies: 32
Views: 860
Posted By Kontact

Raise the seat to expose more post.

Raise the seat to expose more post.
Forum: Classic & Vintage
05-13-24, 06:33 AM
Replies: 21
Views: 584
Posted By Kontact

Those are clearly Stronglight cranks.

Those are clearly Stronglight cranks.
Forum: Road Cycling
05-13-24, 06:30 AM
Replies: 27
Views: 500
Posted By Kontact

That worked because the .2mm difference between...

That worked because the .2mm difference between Campy and Shimano 8 speed spacing isn't significant compared to how wide the cogs are spaced. I have used Shimano 7 speed shifters on Shimano 8 speed...
Forum: Road Cycling
05-13-24, 06:27 AM
Replies: 27
Views: 500
Posted By Kontact

You said it had something to do with MTB...

You said it had something to do with MTB components, and I don't get that. MTB index front derailleurs never had the same pull ratio as road index front derailleurs. Road index front derailleurs are...
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