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Search: Posts Made By: Dave Mayer
Showing results 1 to 50 of 272
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Forum: General Cycling Discussion
04-06-24, 03:17 PM
Replies: 182
Views: 6,630
Posted By Dave Mayer

Disc brakes were ported over to road bikes...

Disc brakes were ported over to road bikes because our latest gen of road riders grew up on mountain bikes and are too young to know that there are a lot of so-called recent innovations that don't...
Forum: General Cycling Discussion
03-31-24, 11:02 AM
Replies: 102
Views: 3,724
Posted By Dave Mayer

Bike weights no longer listed? They used to be...

Bike weights no longer listed? They used to be for the described component configuration and frame size (usually a 52 or 53cm). It was a major selling point. Weights should be listed, as apart from...
Forum: Bicycle Mechanics
03-29-24, 04:22 PM
Replies: 7
Views: 291
Posted By Dave Mayer

Small threaded cog is probably Dura-Ace made with...

Small threaded cog is probably Dura-Ace made with a smaller diameter to allow for a 12t cog. But this looks like a 6 speeder, and the built-in spacer may be too thick to properly index with 7-speeds
Forum: General Cycling Discussion
03-28-24, 03:56 PM
Replies: 642
Views: 17,316
Posted By Dave Mayer

The pros adopt high-performance gear as quickly...

The pros adopt high-performance gear as quickly as possible. They are not traditionalists; they take advantage of every second, watt and gram wherever possible within and often outside of the rules....
Forum: Bicycle Mechanics
03-28-24, 11:59 AM
Replies: 8
Views: 190
Posted By Dave Mayer

Andrew provided the right answer. The Campy...

Andrew provided the right answer. The Campy crankset should only be matched with a Campy BB (ISO), of which at any time there are dozens of compatible models online.

Going from memory, there are...
Forum: Classic & Vintage
03-26-24, 12:32 PM
Replies: 13
Views: 337
Posted By Dave Mayer

Makes sense, although I've used both Campagnolo...

Makes sense, although I've used both Campagnolo and Miche cassettes extensively, and all things being equal, the Campy cassettes simply shift better. The 2 complete Campy cassettes don't look...
Forum: Classic & Vintage
03-26-24, 11:32 AM
Replies: 13
Views: 337
Posted By Dave Mayer

The first 2 pics show complete Campy 9-speed...

The first 2 pics show complete Campy 9-speed cassettes. Not 8 or 10 or 11 speed; I can tell from the cog shapes.

The third pic shows some Miche cogs that should be 9-speed compatible. Don't...
Forum: Bicycle Mechanics
03-23-24, 12:09 PM
Replies: 15
Views: 472
Posted By Dave Mayer

Best hubs ever. I own a few sets, as well as the...

Best hubs ever. I own a few sets, as well as the similar XTR units. The 7700 axle has the standard 10 x 1mm threading. These hubs take 9 x 1/4" balls - so this is all standard stuff. If you find...
Forum: Classic & Vintage
03-23-24, 12:01 PM
Replies: 14
Views: 517
Posted By Dave Mayer

I prefer tubulars above any other tire/rim...

I prefer tubulars above any other tire/rim system, mainly for safety. When you have a sudden blowout, the tubular tire stays stuck firm to the rim, as opposed to clinchers, where even if you can...
Forum: Road Cycling
03-21-24, 11:41 AM
Replies: 608
Views: 20,592
Posted By Dave Mayer

The blindingly obvious solution is for the pros...

The blindingly obvious solution is for the pros to ride on tubulars. Tubular rims are more impact resistant, safer and lighter. I've inspected carbon tubular rims after massive impacts such as...
Forum: Classic & Vintage
03-19-24, 08:00 PM
Replies: 13
Views: 388
Posted By Dave Mayer

Dura-Ace 7400, including the later 8-speed STI...

Dura-Ace 7400, including the later 8-speed STI shifters have a cable pull of about 10% less than Shimano 600 (per gear). And the 740X rear derailleurs have an actuation ratio of about 10% higher...
Forum: Bicycle Mechanics
03-17-24, 07:21 PM
Replies: 24
Views: 639
Posted By Dave Mayer

Exactly. I have seen many rear derailleurs where...

Exactly. I have seen many rear derailleurs where one or both pivots are so corroded that they barely move. Or the 4 pivots in the parallelogram cage are similarly corroded and need some lube to be...
Forum: Bicycle Mechanics
03-16-24, 11:05 PM
Replies: 24
Views: 639
Posted By Dave Mayer

To the OP: ignore most of the previous useless...

To the OP: ignore most of the previous useless contributions to this thread - zero value. Just bores who overvalue their own inexperience.

BTW: Engineering 101 is that metal springs do not change...
Forum: Bicycle Mechanics
03-16-24, 07:18 PM
Replies: 24
Views: 639
Posted By Dave Mayer

Dura-Ace 7700 and 7800 is outstanding kit, and it...

Dura-Ace 7700 and 7800 is outstanding kit, and it should be restored if at all possible. Some lesser derailleurs are not worth the trouble, but this gear is.

First off, derailleurs should not be...
Forum: Classic and Vintage Bicycles: Whats it Worth? Appraisals.
03-01-24, 02:53 PM
Replies: 21
Views: 1,083
Posted By Dave Mayer

Very nice, or about as nice as a race bike could...

Very nice, or about as nice as a race bike could get in 1993. The Dura-Ace STI shifters produce as clean, crisp and accurate shifts as anything made today, short of electronic. If the shifters are...
Forum: General Cycling Discussion
02-27-24, 06:19 PM
Replies: 61
Views: 1,974
Posted By Dave Mayer

The 8-speed groups did work great. I've owned or...

The 8-speed groups did work great. I've owned or ridden the first gen of road bikes with STI shifters (Dura-Ace and 600), and first-gen Campy Ergopower, both 8-speed. The shifting was and still is...
Forum: Classic & Vintage
02-23-24, 07:49 PM
Replies: 17
Views: 785
Posted By Dave Mayer

7+ speed freewheels are the blight of my...

7+ speed freewheels are the blight of my existence. At the Co-op we see at least one broken or badly bent axle per shift. When the rider first notices something funny is going on at the back of the...
Forum: Fifty Plus (50+)
02-23-24, 02:15 PM
Replies: 38
Views: 1,930
Posted By Dave Mayer

Thru-axles are not axles, they are simply wheel...

Thru-axles are not axles, they are simply wheel retention devices. The true axle is in the hub, the definition of an axle being something that does not rotate, around which the wheel bearings in the...
Forum: Bicycle Mechanics
02-22-24, 08:54 PM
Replies: 48
Views: 1,551
Posted By Dave Mayer

Amen on this.. At the Co-op the repair jobs that...

Amen on this.. At the Co-op the repair jobs that require the most extreme combination of experience and expertise are the department-store bikes, especially ones that have been taken apart and put...
Forum: Bicycle Mechanics
02-20-24, 12:37 PM
Replies: 5
Views: 226
Posted By Dave Mayer

The spokes have been completely detensioned? If...

The spokes have been completely detensioned? If so, you should easily be able to slide the spoke heads out as indicated by Dan.

BTW: I have done a lot of work on Mavic wheels, and find it...
Forum: Classic & Vintage
02-17-24, 11:00 AM
Replies: 26
Views: 820
Posted By Dave Mayer

My experience with vintage French hubs is bad, in...

My experience with vintage French hubs is bad, in that the cones are made of soft material and pit a lot faster than Campy hubs, even the lesser Campy hubs such as Tipo and Victory/Triomphe.

Check...
Forum: General Cycling Discussion
02-16-24, 03:05 PM
Replies: 424
Views: 13,485
Posted By Dave Mayer

Factor disc aero wunderbike: Factor's new...

Factor disc aero wunderbike:

Factor's new Ostro VAM blurs boundaries with aero and lightweight design | GCN (globalcyclingnetwork.com)...
Forum: General Cycling Discussion
02-15-24, 01:40 PM
Replies: 424
Views: 13,485
Posted By Dave Mayer

Lighter wheels are the most transformative change...

Lighter wheels are the most transformative change one can make to a bike. I think a lot of the naysayers here are used to riding on cargo bikes with farm tractor wheels, and have never experienced...
Forum: Road Cycling
02-14-24, 01:28 PM
Replies: 156
Views: 5,950
Posted By Dave Mayer

I have an unlimited bike budget. Through work...

I have an unlimited bike budget. Through work and riding cronies, I get to ride a lot of different bikes. I also own a current-gen big-name road bike with Ultegra hydraulic disc. This bike is...
Forum: Road Cycling
02-14-24, 11:50 AM
Replies: 156
Views: 5,950
Posted By Dave Mayer

I totally agree that consumers should make...

I totally agree that consumers should make educated/informed choices about bike purchases. Sure, they should listen to the experts in shops and the 'journalists' in the cycling press. And from...
Forum: General Cycling Discussion
02-13-24, 11:34 AM
Replies: 424
Views: 13,485
Posted By Dave Mayer

The end result of not paying attention to weight...

The end result of not paying attention to weight on the bike is that you'll make a series of decisions that results in you having a 25 pound road rig, which is nowhere competitive on fast rides.
...
Forum: Classic & Vintage
02-12-24, 08:06 PM
Replies: 22
Views: 704
Posted By Dave Mayer

I rode Synchro II for a while, and it was...

I rode Synchro II for a while, and it was flawless. Shifting was reliable, crisp and accurate. Synchro I OTOH was a disaster for Campagnolo, and I never could get it to work correctly. Campagnolo...
Forum: Classic & Vintage
02-11-24, 12:53 PM
Replies: 7
Views: 389
Posted By Dave Mayer

I just measured a 7400 7-speed freewheel cog:...

I just measured a 7400 7-speed freewheel cog: 1.9mm and the cog to cog is exactly 5.0mm. You do the math.

This freewheel has 2 unique cogs: the #1 and #2 threaded. The rest of the cogs can be...
Forum: Bicycle Mechanics
02-09-24, 01:32 PM
Replies: 53
Views: 2,334
Posted By Dave Mayer

I faced this exact problem at the Co-op...

I faced this exact problem at the Co-op yesterday. Shop user's wheel would not stay still despite applying an immense amount of clamping force at the skewer. Turns out the axle end on this side was...
Forum: Bicycle Mechanics
02-02-24, 11:35 AM
Replies: 25
Views: 1,213
Posted By Dave Mayer

Star nut in a carbon steerer? This is an...

Star nut in a carbon steerer? This is an absolute no-go. Would I ride a fork into which a star nut had been installed? Nope.
Forum: General Cycling Discussion
01-20-24, 04:58 PM
Replies: 79
Views: 3,512
Posted By Dave Mayer

Wait: I forgot the third dominant trend in the...

Wait: I forgot the third dominant trend in the bike industry: the need to propagate new 'standards'. Such as the 20 bottom bracket standards we now enjoy, plus a recent proliferation of...
Forum: General Cycling Discussion
01-19-24, 02:02 PM
Replies: 79
Views: 3,512
Posted By Dave Mayer

Gawd: this topic has been beat to death. Naive...

Gawd: this topic has been beat to death. Naive new road riders, industry apologists and marketers come out here (hair on fire) shilling discs for every rider for every application. But for most...
Forum: Bicycle Mechanics
12-25-23, 11:59 AM
Replies: 23
Views: 1,028
Posted By Dave Mayer

I ride Campagnolo on most of my bikes, and I have...

I ride Campagnolo on most of my bikes, and I have a few sets with the official Campy adjusters that fit over the downtube shifter bosses. But I prefer the Shimano adjusters with the little...
Forum: General Cycling Discussion
12-22-23, 12:01 PM
Replies: 121
Views: 4,747
Posted By Dave Mayer

I'm glad you appreciate the advice, but then...

I'm glad you appreciate the advice, but then there is good advice, based on decades of broad experience, such as mine. And then there is naive misinformed advice, such as from the usual hair-on-fire...
Forum: General Cycling Discussion
12-21-23, 11:44 AM
Replies: 121
Views: 4,747
Posted By Dave Mayer

Low weight: tubulars obviously. It is not...

Low weight: tubulars obviously. It is not possible to build clinchers (tubeless or otherwise) that are lighter or stronger than tubulars using the same materials and designing for the same wheel...
Forum: Bicycle Mechanics
11-29-23, 11:09 AM
Replies: 6
Views: 419
Posted By Dave Mayer

This freewheel looks perfectly normal - factory...

This freewheel looks perfectly normal - factory spec teeth. It's been about 10 years since I rode this type of Sachs freewheel, but I remember it shifting well, on par with Hyperglide, and better...
Forum: Bicycle Mechanics
11-20-23, 02:54 PM
Replies: 24
Views: 909
Posted By Dave Mayer

Here is your answer.. You'll want to ignore the...

Here is your answer.. You'll want to ignore the irrelevant meandering contained in most of the previous posts, which includes pointless discussions of JIS, taper angle and taper length. And...
Forum: General Cycling Discussion
11-18-23, 06:44 PM
Replies: 155
Views: 7,329
Posted By Dave Mayer

For those newb road riders who have no sense of...

For those newb road riders who have no sense of history and only know what current marketing feeds them, here is the optimum road bike regardless of vintage or how much you can afford:

...
Forum: General Cycling Discussion
11-18-23, 11:52 AM
Replies: 155
Views: 7,329
Posted By Dave Mayer

Not hording but smart planning. Dura-Ace...

Not hording but smart planning.

Dura-Ace 7800 10-speed shifters. Light, precise and totally reliable. Best Shimano shifting ever, which deteriorated after Shimano put the shift cable routing...
Forum: Bicycle Mechanics
11-16-23, 10:02 PM
Replies: 19
Views: 770
Posted By Dave Mayer

In normal use is no reason for removing the...

In normal use is no reason for removing the self-extracting bolts. The very purpose of these bolts was so that you could use a 7mm hex bit to both install and remove the crankarms. Just one single...
Forum: Bicycle Mechanics
11-15-23, 01:43 PM
Replies: 19
Views: 770
Posted By Dave Mayer

Look for a Miche Young crankset online. Made for...

Look for a Miche Young crankset online. Made for junior-sized racers in shorter arm lengths. They came with 36/46 rings in a 116 BCD.

The smallest ring with this BCD is 35; I know, I'm looking...
Forum: Bicycle Mechanics
11-01-23, 02:37 PM
Replies: 54
Views: 2,360
Posted By Dave Mayer

Buy yourself a package of the same-size Grade 25...

Buy yourself a package of the same-size Grade 25 steel balls. Stainless not required. If the inside of your hubs is such a watery mess that you need rust-resistant balls, then you have much bigger...
Forum: Bicycle Mechanics
10-24-23, 11:17 AM
Replies: 52
Views: 2,186
Posted By Dave Mayer

I work on this gear every week. First off, the...

I work on this gear every week. First off, the ferrule is not seated in the barrel adjuster. This has to be fixed, perhaps this setup doesn't need a ferrule. This configuration may cause the cable...
Forum: Bicycle Mechanics
10-24-23, 11:04 AM
Replies: 51
Views: 5,779
Posted By Dave Mayer

Exactly. I have received this exact advice from...

Exactly. I have received this exact advice from a lawyer, but the example he used was this:Lawyer: "If you worked on a neighborhood kids bike and he got hurt, you're going to get sued. And since...
Forum: Classic & Vintage
10-19-23, 11:24 AM
Replies: 34
Views: 16,841
Posted By Dave Mayer

If you have a Shimano 600 set post-1984, then the...

If you have a Shimano 600 set post-1984, then the Arabesque set would be a significant downgrade in terms of technology and materials.


History: the Suntour patent for the slant parallelogram...
Forum: Classic & Vintage
09-24-23, 11:24 AM
Replies: 75
Views: 4,027
Posted By Dave Mayer

Very nice bike! Campagnolo 8-speed shifts as...

Very nice bike! Campagnolo 8-speed shifts as well as any modern mechanical systems, as long as the right-hand lever G-springs and spring carrier are still fresh. If the shifting is crisp and the...
Forum: Classic & Vintage
09-24-23, 11:13 AM
Replies: 69
Views: 3,883
Posted By Dave Mayer

Truth. This is the essence of the issue: a race...

Truth. This is the essence of the issue: a race bike would have been kitted with a tubular wheelset with 350g rims and 250g tires. If you've ridden on both systems, the clincher (any) wheelset is...
Forum: General Cycling Discussion
09-24-23, 11:05 AM
Replies: 212
Views: 7,338
Posted By Dave Mayer

Shop mechanic here. Will be working on this...

Shop mechanic here. Will be working on this stuff today...

Disc brake systems overall are heavier and pad replacements are more difficult, expensive and time consuming. The frustrating...
Forum: General Cycling Discussion
09-22-23, 07:44 PM
Replies: 212
Views: 7,338
Posted By Dave Mayer

1 x systems have been a boom to the bike...

1 x systems have been a boom to the bike industry, which requires something hot and fresh every few years to churn the stock.

Previously, the industry was on a 7 year cycle of adding yet another...
Forum: General Cycling Discussion
09-22-23, 11:08 AM
Replies: 212
Views: 7,338
Posted By Dave Mayer

For road use, 3 x systems make shifting dead...

For road use, 3 x systems make shifting dead simple, and you shift far less often.

90% of the time you're on the middle ring. Descending or a tailwind, then the big ring. On long climbs, the...
Showing results 1 to 50 of 272
 
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