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Search: Posts Made By: Kontact
Showing results 1 to 50 of 1000
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Forum: Bicycle Mechanics
06-10-24, 06:43 AM
Replies: 6
Views: 97
Posted By Kontact

Get a $3 can of Barkeeper's friend, and apply it...

Get a $3 can of Barkeeper's friend, and apply it with a wet sponge. The oxalic acid will eat the surface rust without affecting the paint. Neutralize when done.
Forum: Bicycle Mechanics
06-10-24, 06:35 AM
Replies: 79
Views: 3,453
Posted By Kontact

Are you kidding? 39 x 23 is not a "high gear" by...

Are you kidding? 39 x 23 is not a "high gear" by any means, and will get you up most any paved road in North America if you are out of the saddle.

The fact that there are 3-4 overlap gear...
Forum: Bicycle Mechanics
06-09-24, 10:21 PM
Replies: 8
Views: 197
Posted By Kontact

Worse, but only for one revolution.

Worse, but only for one revolution.
Forum: Bicycle Mechanics
06-09-24, 10:20 PM
Replies: 79
Views: 3,453
Posted By Kontact

Or they could have done the crank second. Who...

Or they could have done the crank second. Who said one precluded the other?

The point I was making was that cassette could have been the only item replaced and would have yielded lower gearing for...
Forum: Bicycle Mechanics
06-09-24, 10:17 PM
Replies: 63
Views: 1,745
Posted By Kontact

304 does get stronger with cold working - but...

304 does get stronger with cold working - but that isn't comparable to piano wire which is at the other end of the spectrum. It is more like removing the low strength annealed structure.by ironing it...
Forum: Bicycle Mechanics
06-09-24, 08:22 PM
Replies: 63
Views: 1,745
Posted By Kontact

So you didn't believe me. Spokes are 304...

So you didn't believe me.

Spokes are 304 stainless - which is easy to look up on the internet. 304 has zero carbon or nitrogen to act as a hardening agent. Just iron, nickel and chrome.

In the...
Forum: Classic & Vintage
06-09-24, 06:26 PM
Replies: 16
Views: 408
Posted By Kontact

The point I was making is that the Aris...

The point I was making is that the Aris freewheels didn't shift magically better. I see absolutely no reason that 12-21 Winner with a modern chain wouldn't shift just fine, or that a Sachs would...
Forum: Advocacy & Safety
06-09-24, 01:21 PM
Replies: 7
Views: 189
Posted By Kontact

"Thank you for your service."

"Thank you for your service."
Forum: Bicycle Mechanics
06-09-24, 11:12 AM
Replies: 25
Views: 546
Posted By Kontact

68mm? Hmm, I thought they were wider. Maybe it is...

68mm? Hmm, I thought they were wider. Maybe it is more the bearing location that is wide. It certainly doesn't look like anything shorter than what you have would stick out enough past the bearings...
Forum: Classic & Vintage
06-09-24, 10:13 AM
Replies: 16
Views: 408
Posted By Kontact

Shimano 7 and Campy 7 speed are both 5.0mm...

Shimano 7 and Campy 7 speed are both 5.0mm spacing. The 8 speeds are different.

Here's a listing of Aris freewheels:
http://www.bikepro.com/products/freewheels/sachs.shtml
Forum: Classic & Vintage
06-09-24, 09:08 AM
Replies: 16
Views: 408
Posted By Kontact

The best shifting 7 speed freewheels are the ones...

The best shifting 7 speed freewheels are the ones being made now by Sunrace and similar. Correct spacing, HG ramps and chrome. They are cheap and work much better than an old Sachs or Dura Ace...
Forum: Classic & Vintage
06-09-24, 12:50 AM
Replies: 16
Views: 408
Posted By Kontact

I doubt the spacing will be an issue. I've used 7...

I doubt the spacing will be an issue. I've used 7 speed Shimano (5.0mm spacing) on Shimano 8 speed cassettes (4.8mm spacing) and there was no problem with shifting or noise.
Forum: Classic & Vintage
06-08-24, 09:54 PM
Replies: 3
Views: 126
Posted By Kontact

So ream the fork and steerer to ISO.

So ream the fork and steerer to ISO.
Forum: Advocacy & Safety
06-08-24, 11:39 AM
Replies: 19
Views: 719
Posted By Kontact

This guy should have his bike taken away. So...

This guy should have his bike taken away.

So should triathletes.
Forum: Bicycle Mechanics
06-08-24, 10:47 AM
Replies: 63
Views: 1,745
Posted By Kontact

None of this applies to spokes, which are made of...

None of this applies to spokes, which are made of a simple stainless that is not hardenable. It is one of the least strong steels - but it is steel, and steel is strong.
Forum: Bicycle Mechanics
06-08-24, 10:42 AM
Replies: 63
Views: 1,745
Posted By Kontact

Those charts are of breaking strength, not yield.

Those charts are of breaking strength, not yield.
Forum: Bicycle Mechanics
06-08-24, 10:35 AM
Replies: 79
Views: 3,453
Posted By Kontact

I'm glad you found a solution that works for you....

I'm glad you found a solution that works for you.

For anyone following the thread, the OP could have also replaced just his cassette with a 11-28 for $25 + labor and gotten a lower climbing gear...
Forum: Classic & Vintage
06-08-24, 10:25 AM
Replies: 54
Views: 1,914
Posted By Kontact

Trek has a 22% market share.

Trek has a 22% market share.
Forum: Classic & Vintage
06-07-24, 11:23 PM
Replies: 54
Views: 1,914
Posted By Kontact

McDonalds, Nike, Gucci, Apple, Gap, Yankee...

McDonalds, Nike, Gucci, Apple, Gap, Yankee Candle, etc, etc, etc.
Forum: Road Cycling
06-07-24, 11:19 PM
Replies: 1
Views: 129
Posted By Kontact

That label refers to the kind of chain, not what...

That label refers to the kind of chain, not what else is on the bike.

An 11 speed chainring will work with 5 - 11 speed chains just fine. They have the same inner dimensions that interact with the...
Forum: Bicycle Mechanics
06-07-24, 11:58 AM
Replies: 3
Views: 186
Posted By Kontact

I have a Chin Hur off eBay in ISO that works...

I have a Chin Hur off eBay in ISO that works great and was $18. Miche is another good source.
Forum: Bicycle Mechanics
06-07-24, 07:12 AM
Replies: 13
Views: 325
Posted By Kontact

Yeah, the pads are so off from each other that it...

Yeah, the pads are so off from each other that it suggests you don't have the wheel in straight.
Forum: Classic & Vintage
06-07-24, 06:59 AM
Replies: 54
Views: 1,914
Posted By Kontact

Trek still has many stocking dealers that are not...

Trek still has many stocking dealers that are not 100% Trek. Trek stores are owned by Trek.
Forum: Bicycle Mechanics
06-07-24, 06:55 AM
Replies: 25
Views: 546
Posted By Kontact

Cool bike! It is my guess that cranks for...

Cool bike!

It is my guess that cranks for 102/103 spindles will not work - I haven't tried. I'm a Merlin fan and have rebuilt two of these BBs, so I got educated. But I haven't tried a short...
Forum: Classic & Vintage
06-06-24, 10:42 PM
Replies: 54
Views: 1,914
Posted By Kontact

If you read what I posted, 4130 gets surface...

If you read what I posted, 4130 gets surface rust, but does not easily get the deep rust that you would find in simple steels. That's the reason that the majority of steel bikes do not rust through...
Forum: Classic & Vintage
06-06-24, 06:24 PM
Replies: 54
Views: 1,914
Posted By Kontact

Chromoly has enough alloying ingredients in it to...

Chromoly has enough alloying ingredients in it to be fairly rust resistant. Surface - sure. But not the deep stuff like cars get.
Forum: Bicycle Mechanics
06-06-24, 10:07 AM
Replies: 22
Views: 517
Posted By Kontact

If you push down with the wrench at 3 o'clock on...

If you push down with the wrench at 3 o'clock on the left side you'll be turning it clockwise and tightening it.

So that's not useful.

You probably meant push down when the wrench is pointing...
Forum: Bicycle Mechanics
06-06-24, 06:59 AM
Replies: 25
Views: 546
Posted By Kontact

I missed the part about this being a Merlin with...

I missed the part about this being a Merlin with a pressed BB. No: There are no adapters for this particular BB because the diameter is on the small side. There are adapter BBs for pressed in Kleins,...
Forum: Bicycle Mechanics
06-06-24, 06:47 AM
Replies: 22
Views: 517
Posted By Kontact

The flange is external, as in your picture. There...

The flange is external, as in your picture. There are BBs where both cups have flanges, and neither has them. But most have a flange on the right and none on the left.

Regardless of what order...
Forum: Bicycle Mechanics
06-05-24, 09:28 PM
Replies: 15
Views: 341
Posted By Kontact

Hard to misalign a correct size ferrule.

Hard to misalign a correct size ferrule.
Forum: Bicycle Mechanics
06-05-24, 09:25 PM
Replies: 16
Views: 411
Posted By Kontact

This is it.

This is it.
Forum: Bicycle Mechanics
06-05-24, 09:20 PM
Replies: 25
Views: 546
Posted By Kontact

Most Campy front shifters aren't indexed. ...

Most Campy front shifters aren't indexed.

mphey
Just having an ISO spindle doesn't mean you can use any ISO crank. Campy used several different ISO spindle lengths. If, for instance, you have a...
Forum: Bicycle Mechanics
06-05-24, 09:00 PM
Replies: 22
Views: 517
Posted By Kontact

Plastic cups work fine if you aren't a klutz with...

Plastic cups work fine if you aren't a klutz with tools. Trying to replace a plastic cup with a metal one might create issues.

In my Ti MTB I've had a cheap BB with two plastic cups for a couple...
Forum: Bicycle Mechanics
06-05-24, 08:53 PM
Replies: 15
Views: 341
Posted By Kontact

In this picture you have a 4mm shifter housing...

In this picture you have a 4mm shifter housing going into a ferrule for 5mm (brake) housing. Of course it works poorly.


In reference to other advice offered here, don't try sticking a ferrule in...
Forum: Classic & Vintage
06-03-24, 09:00 PM
Replies: 93
Views: 2,703
Posted By Kontact

It may well be strong enough. But it was...

It may well be strong enough. But it was incredibly unnecessary to get aluminum out of steel. A single large drill bit from the top would have done 80% of the work.
Forum: Classic and Vintage Sales
06-02-24, 08:48 PM
Replies: 6
Views: 466
Posted By Kontact

Price lowered to $100 plus shipping. It's a...

Price lowered to $100 plus shipping. It's a really nice lugged frame.
Forum: Road Cycling
06-02-24, 08:36 PM
Replies: 50
Views: 1,377
Posted By Kontact

The OP got 11,000 miles out of his garbage Trek...

The OP got 11,000 miles out of his garbage Trek wheels.

One thing that gets done wrong, including by shops, is that they seat the bearings too far in to the hub body and they bind against the axle...
Forum: Road Cycling
06-02-24, 01:51 PM
Replies: 50
Views: 1,377
Posted By Kontact

It takes about 30 minutes to remove and replace...

It takes about 30 minutes to remove and replace every cartridge bearing in a rear cassette hub. That would cost maybe $100 at most, and should last several years. There is just no economics that...
Forum: Singlespeed & Fixed Gear
06-02-24, 12:17 PM
Replies: 3
Views: 150
Posted By Kontact

Seems like the issue is chainstay clearance near...

Seems like the issue is chainstay clearance near the BB for big tires, so they went to wider crank spacing to accomplish chainring clearance around the wider chainstays. That made a wider hub...
Forum: Road Cycling
06-02-24, 12:06 PM
Replies: 50
Views: 1,377
Posted By Kontact

I'd consider a new bike shop.

I'd consider a new bike shop.
Forum: Cyclocross and Gravelbiking (Recreational)
06-01-24, 07:55 AM
Replies: 35
Views: 1,171
Posted By Kontact

Given Seven's connection to Merlin, I give them...

Given Seven's connection to Merlin, I give them similar credit.
Forum: Bicycle Mechanics
05-31-24, 08:08 AM
Replies: 23
Views: 810
Posted By Kontact

I was suggesting the OP change his general...

I was suggesting the OP change his general approach to diagnosis moving forward.


You've chastised me twice now for a single post. I get it. You can stop.
Forum: Bicycle Mechanics
05-30-24, 06:56 AM
Replies: 23
Views: 810
Posted By Kontact

You should try to find out why stuff is suddenly...

You should try to find out why stuff is suddenly not working rather than replacing everything as a first step.
Forum: Classic and Vintage Bicycles: Whats it Worth? Appraisals.
05-29-24, 07:37 PM
Replies: 11
Views: 397
Posted By Kontact

That quill stem looks like a common size - 110mm...

That quill stem looks like a common size - 110mm or so. The seat tube length is long - a big bike. The geometry is typical of a standard road bike.

Before you buy, look for areas near the lugs...
Forum: Bicycle Mechanics
05-29-24, 05:39 PM
Replies: 21
Views: 579
Posted By Kontact

That headtube might never have been reamed.

That headtube might never have been reamed.
Forum: Road Cycling
05-29-24, 11:53 AM
Replies: 22
Views: 639
Posted By Kontact

Kinda defeats the purpose of a QR.

Kinda defeats the purpose of a QR.
Forum: Classic and Vintage Bicycles: Whats it Worth? Appraisals.
05-29-24, 11:49 AM
Replies: 11
Views: 397
Posted By Kontact

At least one generation of Epics literally fell...

At least one generation of Epics literally fell apart from galvanic corrosion. But bikes rarely ridden...
Forum: Bicycle Mechanics
05-29-24, 11:46 AM
Replies: 21
Views: 579
Posted By Kontact

I think you'll find those aluminum cups stay cold...

I think you'll find those aluminum cups stay cold for only seconds once they touch the warm steel head tube, and you'll need a press either way.
Forum: Bicycle Mechanics
05-28-24, 06:40 PM
Replies: 7
Views: 312
Posted By Kontact

What, exactly, "seems off"? If you dished it...

What, exactly, "seems off"?

If you dished it correctly, what you are observing may be something other than the wheel.
Forum: Bicycle Mechanics
05-28-24, 05:41 PM
Replies: 11
Views: 514
Posted By Kontact

Well, was the cone and the stem well greased...

Well, was the cone and the stem well greased where they contact each other?
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