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Search: Posts Made By: Dave Mayer
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07-19-19, 06:49 PM
Replies: 28
Views: 741
Posted By Dave Mayer

I volunteer several times a week at a high-volume...

I volunteer several times a week at a high-volume Big-city bike Co-op. We get lots of academic institutions and building managers, and even commercial bike shops wanting us to pick up lots of...
07-18-19, 06:49 PM
Replies: 35
Views: 1,011
Posted By Dave Mayer

Oh, the drama. Most of my bikes use square taper...

Oh, the drama. Most of my bikes use square taper cup and cone. I ride in all conditions year round in the rainy Pac NW.

Unless someone is regularly submerging their bikes in salt water for some...
07-16-19, 01:18 PM
Replies: 7
Views: 348
Posted By Dave Mayer

7-speed Dura-Ace cassette system.... this topic...

7-speed Dura-Ace cassette system.... this topic has been thoroughly hashed. Run away.

All kinds of incompatibility issues. Impossible to find parts. Tiny gear range.
07-14-19, 11:34 AM
Replies: 12
Views: 439
Posted By Dave Mayer

Dura-Ace 740X hubs are about the easiest to...

Dura-Ace 740X hubs are about the easiest to service of any I've come across. You rotate the little plastic covers until the mark indicates: OPEN. Then you take your grease injector and squirt until...
07-13-19, 05:05 PM
Replies: 12
Views: 439
Posted By Dave Mayer

Nope. Only Shimano 740X series freehubs fit on...

Nope. Only Shimano 740X series freehubs fit on these hubs. Completely incompatible design. You also need a special tool to remove these special freehubs, unless your plan is destructive removal...
07-13-19, 02:02 PM
Replies: 12
Views: 439
Posted By Dave Mayer

Rare hub. The 7403 will accept a 8, 9 or 10 speed...

Rare hub. The 7403 will accept a 8, 9 or 10 speed Shimano or SRAM cassette, as long as the cassette doesn't start with an 11-tooth cog.

If you have the rarer Uniglide-only 7402 hub, then good luck...
07-12-19, 12:09 PM
Replies: 42
Views: 2,101
Posted By Dave Mayer

I was riding my lovely 979 yesterday; the frame...

I was riding my lovely 979 yesterday; the frame is a great foundation for a weight-weenie C&V bike. Diminishing returns: I was thinking about the alu (yes alu) expander bolt on the Cinelli stem. It...
Forum: Road Cycling
07-11-19, 12:23 PM
Replies: 13
Views: 632
Posted By Dave Mayer

Well: in general, a top-end 2006 carbon bike will...

Well: in general, a top-end 2006 carbon bike will feature:

10-speed drivetrain
rim brakes
external cable routing
If Shimano shifters: exposed shift cables coming out of the side of the...
07-10-19, 02:59 PM
Replies: 17
Views: 660
Posted By Dave Mayer

Hard to see any problem looking from the side....

Hard to see any problem looking from the side. From an earlier pic, you do have the correct 7/8 speed first cog. It is stamped on the outside of the cog. The second cog has a built-in spacer, which...
Forum: Road Cycling
07-10-19, 02:41 PM
Replies: 17
Views: 760
Posted By Dave Mayer

I own two bikes with 5800 11-speed. Shifting is...

I own two bikes with 5800 11-speed. Shifting is pretty good. Still not as good as brand new 7800, or 7700, or 7400 or 6400.

Keep in mind that in order to overcome the extra cable friction of...
Forum: Road Cycling
07-10-19, 12:25 PM
Replies: 17
Views: 760
Posted By Dave Mayer

I have several bikes with STI shifters, going...

I have several bikes with STI shifters, going back to the dawn of brifters: circa early 90ís. When you are the 'bike guy' at work, bikes and components tend to fall into your lap.

I actually far...
07-09-19, 11:56 AM
Replies: 17
Views: 660
Posted By Dave Mayer

Dura-Ace 7400 freehub. I am the unfortunate...

Dura-Ace 7400 freehub. I am the unfortunate owner of a few of these. The first two cogs are as rare as the Holy Grail, and necessary.

Uniglide only. The later 8-speed 7403 freehub is Hyperglide...
07-07-19, 12:12 PM
Replies: 16
Views: 1,023
Posted By Dave Mayer

So I'm at the shop trying to figure out why a...

So I'm at the shop trying to figure out why a relatively recent Ultegra drivetrain is shifting so poorly. The rear derailleur in particular is stiff/sticky.

So I take it apart - as in every part...
Forum: Road Cycling
07-02-19, 01:35 PM
Replies: 108
Views: 5,711
Posted By Dave Mayer

I have been swapping back and forth between...

I have been swapping back and forth between Shimano STI and Campagnolo Ergopower. Ergopower wins. Ultrashift.
07-02-19, 01:27 PM
Replies: 40
Views: 1,715
Posted By Dave Mayer

Craigslist blues in 2019? It is going to get a...

Craigslist blues in 2019? It is going to get a lot worse.

From the late 80s for a period of 10 years, road bikes were dead dead dead. During that period the industry was pushing mountain bikes -...
07-01-19, 12:45 PM
Replies: 32
Views: 1,559
Posted By Dave Mayer

Kimmo: I have immense respect for your mechanical...

Kimmo: I have immense respect for your mechanical chops, but I think you have it wrong here.

I am looking at a row of uncut forks with carbon steerers. The wall thickness of these is such that...
06-29-19, 10:18 PM
Replies: 32
Views: 1,559
Posted By Dave Mayer

Having a spacer above the stem could not have...

Having a spacer above the stem could not have caused the failure. Extra steerer tube above the stem places zero stress on the fork or the stem. Whoever 'disapproves' is simply making a poor attempt...
06-25-19, 02:23 PM
Replies: 37
Views: 1,663
Posted By Dave Mayer

Good God... what an appalling development. As a...

Good God... what an appalling development. As a multi-decade surviving cyclist, I can attest that I did not come to a complete stop at STOP signs, I would be dead many times over.

Most of my near...
Replies: 3
Views: 280
Posted By Dave Mayer

At our local Co-op we took possession of a large...

At our local Co-op we took possession of a large quantity of old stuff from a store that recently closed. Some of the inventory was pre-war.

This included many tubular wheelsets. We sold the...
06-25-19, 12:00 PM
Replies: 9
Views: 690
Posted By Dave Mayer

I volunteer at a high-volume, big city bike...

I volunteer at a high-volume, big city bike Co-op. In the best case scenario, modifying a 126mm OLD wheel to 135mm will take about 30 minutes of dedicated attention from someone who has done the...
06-20-19, 01:50 PM
Replies: 31
Views: 3,544
Posted By Dave Mayer

Safe riding is mostly due to experience. You...

Safe riding is mostly due to experience. You learn most from close calls...

But also a Zen-like state where you have no distractions (including conscious thoughts), and no emotions. Riding while...
06-19-19, 12:28 PM
Replies: 23
Views: 918
Posted By Dave Mayer

Grease injection is a major timesaver, plus...

Grease injection is a major timesaver, plus avoids the risk of mis-adjustments on bearing setup.

I never disassemble pedals anymore for cleaning. Fussy setup and a million little ball bearings. ...
06-19-19, 12:45 AM
Replies: 23
Views: 918
Posted By Dave Mayer

Holes are for grease injection. Slide the cover...

Holes are for grease injection. Slide the cover to the side and pump the hub with grease until the old contaminated stuff shoots out both sides. Hubs are now good as overhauled.

Anticipating the...
06-15-19, 09:50 AM
Replies: 3
Views: 798
Posted By Dave Mayer

I have at least two sets of these shifters and...

I have at least two sets of these shifters and ran them on bikes for several years until I went to 9 speed.

They are pure mid-90s 8-speed Campagnolo Chorus shifters, except for the labeled hoods....
Forum: Road Cycling
06-08-19, 11:14 AM
Replies: 68
Views: 4,099
Posted By Dave Mayer

Cautionary message to the OCD cleaners out there....

Cautionary message to the OCD cleaners out there. Someone gave me a recent gen Ultegra rear derailleur because it was 'sticky'.

Sticky indeed... upon a complete disassembly it was clear that every...
Forum: Road Cycling
06-06-19, 10:44 AM
Replies: 18
Views: 1,221
Posted By Dave Mayer

I've been riding stiff-soled cycling shoes with...

I've been riding stiff-soled cycling shoes with clipless pedals for many years. The other day I decided to jump on the bike with tennis sneakers for a test spin around the block. I was surprised at...
06-04-19, 10:51 PM
Replies: 28
Views: 1,331
Posted By Dave Mayer

Yes, the driveside dust cap. Obviously. How could...

Yes, the driveside dust cap. Obviously. How could the orientation of the non-driveside dust cap have any connection to the tightening of the cassette lockring?

A superficial glance at the pics is...
06-04-19, 06:40 PM
Replies: 28
Views: 1,331
Posted By Dave Mayer

The hub is a Hyperglide/Uniglide compatible...

The hub is a Hyperglide/Uniglide compatible version. It takes a lockring to tighten the cassette. From the last pics it is glaringly obvious that tightening the lockring will push up against the...
06-01-19, 03:19 AM
Replies: 28
Views: 1,331
Posted By Dave Mayer

The cassette lockring is probably pushing against...

The cassette lockring is probably pushing against the dustcap. Which is pushing against the drive-side bearings.

You've likely installed the dustcap backwards.
05-29-19, 10:20 AM
Replies: 43
Views: 2,399
Posted By Dave Mayer

About 10 years ago, a mint Guibulato (sp?) road...

About 10 years ago, a mint Guibulato (sp?) road bike with first generation Dura-Ace brifters dropped into my lap. It was too big for me, so I sold it to a pal. He loved the bike, but wanted lower...
05-28-19, 06:35 PM
Replies: 43
Views: 2,399
Posted By Dave Mayer

Two things: first, Shimano 600 SIS came after...

Two things: first, Shimano 600 SIS came after Dura-Ace 7400. 600 was designed to not work with Dura-Ace, not the other way around. I don't know the reason for the change, which was probably due to...
05-26-19, 03:07 AM
Replies: 54
Views: 2,481
Posted By Dave Mayer

Yep. The BB shell was cast in one piece; a...

Yep.

The BB shell was cast in one piece; a work of art. On the inside of the bottom bracket, where the frame tubes come together for brazing, the workmanship is superior to any steel frame I've...
05-25-19, 10:38 PM
Replies: 4
Views: 632
Posted By Dave Mayer

Shimano hubs have never featured Campagnolo...

Shimano hubs have never featured Campagnolo freehub compatibility. I have taken apart almost every Shimano hub made, and I cannot conceive how this would be possible. The hubs are fundamentally...
05-25-19, 10:34 PM
Replies: 54
Views: 2,481
Posted By Dave Mayer

I have a '86 Montello. Montellos do not have the...

I have a '86 Montello. Montellos do not have the separate bridge connecting the seatstays. Montello's do have the cast fastback-style seatpost clamp assembly in the pic posted by fraba.

My bike...
05-25-19, 10:20 PM
Replies: 43
Views: 2,399
Posted By Dave Mayer

Trust me: you do want brifters; all of my vintage...

Trust me: you do want brifters; all of my vintage bikes have been retrofitted with these for convenience and safety. I suffered with downtube shifters for 25 years - never again.

As correctly...
05-24-19, 04:50 PM
Replies: 4
Views: 331
Posted By Dave Mayer

These must be hubs on newer replacement wheels....

These must be hubs on newer replacement wheels. So to answer your question: no. Cheap materials and finish.

I once did a large and complex bikes parts transaction with a shop that resulted in me...
05-20-19, 02:21 PM
Replies: 170
Views: 18,006
Posted By Dave Mayer

I volunteer at a high-volume, big-city bike...

I volunteer at a high-volume, big-city bike Co-op. We see mostly vintage bike stuff; vintage does not necessarily mean good. In fact, about 90% of what we see is vintage bad, meaning that if our...
05-20-19, 02:05 PM
Replies: 20
Views: 890
Posted By Dave Mayer

I volunteer at a high-volume big-city bike Co-op....

I volunteer at a high-volume big-city bike Co-op. We overhaul and recover several wheels every week. We even have a couple of folks in which that is about all they do: wheel repairs. Wheels with...
05-19-19, 12:02 PM
Replies: 15
Views: 620
Posted By Dave Mayer

I've read that alu chainrings wear not that much...

I've read that alu chainrings wear not that much slower than steel.

First, if your chain is not that worn, chainrings will last a very long time, into the 10k+ mileage range. Pooched chains will...
Forum: Foo
05-18-19, 01:25 AM
Replies: 57
Views: 1,996
Posted By Dave Mayer

I've been looking for a new phone for 2 years. ...

I've been looking for a new phone for 2 years. I need a headphone jack, a removable battery, and a non-Android OS. Or at least an Android phone that can be rooted clean.

Until then, I continue...
05-15-19, 06:27 PM
Replies: 30
Views: 1,827
Posted By Dave Mayer

It makes sense to stockpile consumables such as...

It makes sense to stockpile consumables such as chains, cassettes, cables, housing, etc. I go through 3-4 chains per year, plus a cassette and an occasional ring. If you find a smoking good deal, and...
Forum: Road Cycling
05-15-19, 03:27 PM
Replies: 15
Views: 871
Posted By Dave Mayer

If you've ridden a 1,300 gram (or less) wheelset,...

If you've ridden a 1,300 gram (or less) wheelset, you'll understand the huge effect of rotating mass on climbing and accelerating.

Anyway, I've been riding long distances on gravel lately, and...
05-11-19, 12:57 PM
Replies: 11
Views: 588
Posted By Dave Mayer

Good point: if the cup in the freehub is pooched,...

Good point: if the cup in the freehub is pooched, then you should replace the freehub - whole. You may not be able to source the sweet titanium freehubs that came stock with 7700, but almost any...
05-10-19, 11:59 PM
Replies: 25
Views: 1,195
Posted By Dave Mayer

White gas, also known as 'Coleman Fuel' or 'camp...

White gas, also known as 'Coleman Fuel' or 'camp fuel' is an outstanding degreaser. A little goes a long way in the most challenging jobs. But it is highly flammable and dries out my skin.
...
05-10-19, 09:56 PM
Replies: 11
Views: 588
Posted By Dave Mayer

These hubs get my vote as the best road hubs...

These hubs get my vote as the best road hubs ever. It is unusual that the cups went before the cones or balls. The cups can be replaced; it takes the same tools and technique as replacing a...
Forum: Road Cycling
05-06-19, 10:49 PM
Replies: 326
Views: 27,200
Posted By Dave Mayer

Brifters: good analogy. Yeah, I hate...

Brifters: good analogy. Yeah, I hate retro-grouches who refuse to accept new and superior tech. Like disk breaks.

I want a suspension fork on my road bike; why not - it is just a little extra...
04-30-19, 11:07 AM
Replies: 8
Views: 446
Posted By Dave Mayer

Yeah, Dura-Ace freewheels were the highest...

Yeah, Dura-Ace freewheels were the highest quality ever, both in construction and materials. Shimano 600, Sante and Dura-Ace 6 and 7 speed freewheel cogs are largely cross-compatible.

New...
04-28-19, 10:47 AM
Replies: 20
Views: 1,310
Posted By Dave Mayer

You may not need another rear derailleur. In my...

You may not need another rear derailleur. In my past, I've run a Shimano 105 short (yes, short) cage rear derailleur with a 34 tooth cog on a Shimano Megarange cassette. It worked, but chain length...
04-25-19, 11:17 AM
Replies: 11
Views: 811
Posted By Dave Mayer

I volunteer at a high volume, big city non-profit...

I volunteer at a high volume, big city non-profit Co-op. We encourage folks to work on their own bikes, with the 'Advisors' helping out when needed.

Disc-based bikes maybe represent 5% of what...
Forum: Road Cycling
04-23-19, 10:42 PM
Replies: 326
Views: 27,200
Posted By Dave Mayer

Thru-axles? Yes, I had a demo at a local shop. ...

Thru-axles? Yes, I had a demo at a local shop. Confirmed: they are a PITA. I'm at a minimum removing and stashing my front wheel once per day. Could not be bothered with anything that involves...
Showing results 1 to 50 of 1000
 


 
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