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Search: Posts Made By: Dave Mayer
Showing results 1 to 50 of 1000
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Forum: General Cycling Discussion
09-19-24, 11:07 AM
Replies: 14
Views: 508
Posted By Dave Mayer

This initiative would allow commercial bike shops...

This initiative would allow commercial bike shops to better identify co-ops and non-profits and their capabilities. The commercial shops that surround our local Co-op frequently refer clients our...
Forum: General Cycling Discussion
09-18-24, 12:01 PM
Replies: 30
Views: 622
Posted By Dave Mayer

My oldest steel bike has the tendency to go...

My oldest steel bike has the tendency to go harmonic at around 40-45 mph. Last time it happened I was pulling out of the slipstream of my pal and the buffeting of the wind started things off. ...
Forum: Road Cycling
09-10-24, 10:44 AM
Replies: 78
Views: 3,481
Posted By Dave Mayer

So much drama! I've ridden tubulars spiked with...

So much drama! I've ridden tubulars spiked with a little Stan's for many many years. It works.

Remove the valve core and inject 20cc in the rear tire with a hand pump that has the head parts...
Forum: Classic & Vintage
09-10-24, 10:37 AM
Replies: 30
Views: 843
Posted By Dave Mayer

I've owned both. If you want something to ride,...

I've owned both. If you want something to ride, then definitely go Shimano 600. Perhaps a slight downgrade in materials and weight, but you won't notice it. The shift quality is indistinguishable....
Forum: Bicycle Mechanics
09-07-24, 10:04 AM
Replies: 82
Views: 2,704
Posted By Dave Mayer

I've been wheel building and repairing for about...

I've been wheel building and repairing for about 25 years now, and my mentor was the best builder in our metro area.

I originally had problems with spokes loosening over time, whereas my mentor's...
Forum: Road Cycling
09-07-24, 09:57 AM
Replies: 78
Views: 3,481
Posted By Dave Mayer

Tubeless tires are presumably flat-proof due to...

Tubeless tires are presumably flat-proof due to the addition of sealant.

With tubulars, you can also inject sealant, which makes them almost impregnable to flats. 20cc in the rear tire is enough...
Forum: Classic & Vintage
09-06-24, 11:26 AM
Replies: 8
Views: 413
Posted By Dave Mayer

I've used many versions of the Campagnolo...

I've used many versions of the Campagnolo dual-pivot calipers. Great brakes - all of them, even down to the Xenon level.

On these brakes I haven't noticed this type of cracking before, but now...
Forum: Road Cycling
08-28-24, 11:03 AM
Replies: 41
Views: 2,361
Posted By Dave Mayer

I work on bikes every day. Discs, particularly...

I work on bikes every day. Discs, particularly hydraulic discs are a lot more trouble and expense than rim brakes, and for the vast majority of road/hybrid riders more trouble than they are worth.
...
Forum: Road Cycling
08-27-24, 11:32 AM
Replies: 78
Views: 3,481
Posted By Dave Mayer

Time and resources... In the (lessened) event of...

Time and resources... In the (lessened) event of a flat with the tubular system you hand your wheel to your mechanic and grab another. The mechanic goes away, pulls off the old tire (in seconds),...
Forum: Road Cycling
08-27-24, 11:06 AM
Replies: 78
Views: 3,481
Posted By Dave Mayer

If someone has the resources (time and money) and...

If someone has the resources (time and money) and cares for peak performance, and they know better, then they won't be on clinchers, whether tubed or tubeless. Simply and inferior solution relative...
Forum: Road Cycling
08-21-24, 01:42 PM
Replies: 78
Views: 3,481
Posted By Dave Mayer

Another useless drive-by 'contribution' by a...

Another useless drive-by 'contribution' by a over-frequent poster whose idea of performance cycling is limited to picking up cans and bottles at the side of the road with a milk crate bike.

This...
Forum: Road Cycling
08-21-24, 12:33 AM
Replies: 78
Views: 3,481
Posted By Dave Mayer

Yes, you can run tubulars at lower pressures. As...

Yes, you can run tubulars at lower pressures. As mentioned above, tubular tires contain more useful air volume than equivalent sized clinchers, as the space between the braking tracks in clinchers...
Forum: Bicycle Mechanics
08-15-24, 12:35 PM
Replies: 1
Views: 114
Posted By Dave Mayer

The inner cage of lower-tier Campy derailleurs of...

The inner cage of lower-tier Campy derailleurs of this generation should be interchangeable. Not Chorus or Record, but everything lower that uses the tiny c-clip to attach the cage to the lower...
Forum: Road Cycling
08-14-24, 01:06 PM
Replies: 40
Views: 1,937
Posted By Dave Mayer

All things being equal, larger tires are heavier...

All things being equal, larger tires are heavier and less aero. And if inflated at recommended pressures, larger tires have greater rolling resistance on regular pavement.

If your roads are not...
Forum: Bicycle Mechanics
08-09-24, 12:57 PM
Replies: 343
Views: 13,620
Posted By Dave Mayer

So I've got my quick release front wheel change...

So I've got my quick release front wheel change time to under 4 seconds. This involves flipping the lever, which drops the wheel out, inserting another wheel, and tightening with the QR lever. ...
Forum: Bicycle Mechanics
08-07-24, 03:57 PM
Replies: 343
Views: 13,620
Posted By Dave Mayer

100% truth; couldn't have said this better...

100% truth; couldn't have said this better myself. I consider this "discussion" decisively closed.
Forum: Classic and Vintage Bicycles: Whats it Worth? Appraisals.
08-07-24, 10:55 AM
Replies: 3
Views: 351
Posted By Dave Mayer

Does the crankset have a 35 or 36 small ring? If...

Does the crankset have a 35 or 36 small ring? If so, then its value quadrupled.
Forum: Bicycle Mechanics
08-04-24, 12:44 PM
Replies: 343
Views: 13,620
Posted By Dave Mayer

7 pages!! Notable here are the individuals...

7 pages!! Notable here are the individuals frothing at the mouth attempting to defend their latest misguided bike purchasing decisions. Under the mantra that newest is always better, and that we...
Forum: Bicycle Mechanics
08-04-24, 01:08 AM
Replies: 343
Views: 13,620
Posted By Dave Mayer

Clarity: my fork does not have lawyer tabs: this...

Clarity: my fork does not have lawyer tabs: this 1986 bike predates the nanny state laws requiring these.
Forum: Road Cycling
08-03-24, 11:39 PM
Replies: 36
Views: 1,617
Posted By Dave Mayer

Well: check out your new pedals carefully - there...

Well: check out your new pedals carefully - there are Youtube videos pointing out the subtle external differences between authentic and fakes. The major differences are hidden inside - specifically...
Forum: Bicycle Mechanics
08-03-24, 10:53 PM
Replies: 343
Views: 13,620
Posted By Dave Mayer

QR vs. Thru-axle Did a test on how much...

QR vs. Thru-axle

Did a test on how much faster my quick releases are over thru-axle. The test involved removing the front wheel clear of the bike and then re-installing it back into the fork...
Forum: Road Cycling
08-03-24, 10:27 PM
Replies: 36
Views: 1,617
Posted By Dave Mayer

Authentic Shimano pedals? Online is rife with...

Authentic Shimano pedals? Online is rife with fake Shimano road and MTB pedals.

Your shop wouldn't sell you fakes, but they don't know. Scenario: a customer bought some pedals from the shop and...
Forum: Bicycle Mechanics
08-02-24, 11:19 AM
Replies: 343
Views: 13,620
Posted By Dave Mayer

So what have we learned after 5 pages here? ...

So what have we learned after 5 pages here?

That thru-axles are not axles, and do not add structural integrity or any meaningful 'stiffness' to the system. Counter to the stock industry talking...
Forum: Bicycle Mechanics
08-01-24, 11:48 AM
Replies: 343
Views: 13,620
Posted By Dave Mayer

Well, apparently thru-axles add 'lateral...

Well, apparently thru-axles add 'lateral stiffness' to the fork. OK, I'm a real engineer too, and here are some questions:

Why is extra lateral stiffness desirable in a fork? What extreme lateral...
Forum: Bicycle Mechanics
08-01-24, 11:24 AM
Replies: 343
Views: 13,620
Posted By Dave Mayer

Thru-axles have had a major impact on pack...

Thru-axles have had a major impact on pack racing, in that wheel changes are now so slow that in the event of a flat, teams now swap out entire bikes. Add to that the incompatible mix of thru-axles....
Forum: Early Brifter Bikes - 7,8, and 9 Speed
07-31-24, 02:29 PM
Replies: 14
Views: 1,284
Posted By Dave Mayer

Brakes: hopefully the dual-pivot Record brakes,...

Brakes: hopefully the dual-pivot Record brakes, which are about as good as any rim brakes ever made. Very high quality hardware and materials. Powerful brakes with good modulation. Check the...
Forum: Bicycle Mechanics
07-31-24, 02:21 PM
Replies: 343
Views: 13,620
Posted By Dave Mayer

Again, thru-axles are not axles, and do not add...

Again, thru-axles are not axles, and do not add any 'strength' or 'stiffness' to the system. If a bike industry engineer is depending on a 20 gram piece of aluminum tubing to maintain the structural...
Forum: Bicycle Mechanics
07-30-24, 11:07 PM
Replies: 14
Views: 724
Posted By Dave Mayer

The problem is not the lower spring. The problem...

The problem is not the lower spring. The problem is the stop/tab on the jockey wheel cage is bent, which has allowed the cage to rotate all the way around past the stop, until the spring tension was...
Forum: Early Brifter Bikes - 7,8, and 9 Speed
07-30-24, 10:58 PM
Replies: 14
Views: 1,284
Posted By Dave Mayer

If the right lever is marked: 9-speed or...

If the right lever is marked: 9-speed or 10-speed, then you know what it is. Unmarked, it is 8-speed. In the mid-90s, Campagnolo made 8-speed levers with carbon bodies, but alloy blades. Carbon...
Forum: Bicycle Mechanics
07-30-24, 10:43 PM
Replies: 343
Views: 13,620
Posted By Dave Mayer

Thank you! Finally someone who gets it. ...

Thank you! Finally someone who gets it.


First off, thru-axes are not axles, but merely wheel retention devices. Bearings rotate around axles. Thru-axles do not any 'stiffness' to the...
Forum: General Cycling Discussion
07-20-24, 11:10 AM
Replies: 44
Views: 1,936
Posted By Dave Mayer

If I were to start a bike company from scratch,...

If I were to start a bike company from scratch, with the objective of maximizing long-term shareholder returns, I would design and manufacture bikes that tied my customer base to my brand through a...
Forum: Bicycle Mechanics
07-05-24, 10:57 AM
Replies: 25
Views: 1,290
Posted By Dave Mayer

Plus a longer chain so you don't tear your rear...

Plus a longer chain so you don't tear your rear derailleur off the first time you shift into the big ring and cassette cog. This combo will happen. You'll likely have to screw in your B-tension...
Forum: Classic & Vintage
07-03-24, 12:07 PM
Replies: 14
Views: 833
Posted By Dave Mayer

I recently installed a fresh set of XTR 951s. ...

I recently installed a fresh set of XTR 951s. Damn these are nice brakes; very powerful, no squeaking with stock pads and simple to set up. In terms of raw braking power, in dry conditions, they...
Forum: General Cycling Discussion
07-02-24, 12:38 PM
Replies: 198
Views: 8,573
Posted By Dave Mayer

Trolling discrediting the positive recent...

Trolling discrediting the positive recent developments in the bike industry is damaging and causes confusion among prospective buyers.

Some of these persistent negative opinions expressed by...
Forum: Classic & Vintage
07-02-24, 12:01 PM
Replies: 7
Views: 399
Posted By Dave Mayer

I recognize the shifters: Campagnolo Avanti. The...

I recognize the shifters: Campagnolo Avanti. The downshift paddles and upshift buttons were combined into one piece, as a cost saving measure. I'm a fan of Campagnolo shifters, but not these; these...
Forum: Classic & Vintage
06-24-24, 12:26 PM
Replies: 5
Views: 347
Posted By Dave Mayer

Quick answer: no. The slant parallelogram...

Quick answer: no. The slant parallelogram derailleur design is superior in every respect to the older Campy unit, apart from a few grams of extra weight. The upper jockey wheel on the Veloce will...
Forum: Road Cycling
06-19-24, 12:07 PM
Replies: 650
Views: 33,397
Posted By Dave Mayer

You want increased flat protection with tubulars?...

You want increased flat protection with tubulars? Inject 20cc (20 grams) of sealant through a tubular with a removable valve core. Then you get the added flat protection of sealant, without all the...
Forum: Road Cycling
06-19-24, 01:16 AM
Replies: 650
Views: 33,397
Posted By Dave Mayer

Pogačar's crash was classic clincher. The moment...

Pogačar's crash was classic clincher. The moment the tire fully deflated and a rim hook touched pavement, he was down. If he'd been on tubulars the rim surface would have been fully and securely...
Forum: Road Cycling
06-18-24, 12:16 PM
Replies: 53
Views: 2,566
Posted By Dave Mayer

Just came out of the shop after trying to crack...

Just came out of the shop after trying to crack the bead of a (good used) Conti kevlar-bead tire off of an Easton tubeless-compatible rim. Removal by hand: not a chance. Try and wedge a tire lever...
Forum: Road Cycling
06-03-24, 11:44 AM
Replies: 52
Views: 2,567
Posted By Dave Mayer

Late to this party but here goes: Wheel...

Late to this party but here goes:

Wheel bearing replacement is a simple task that should take less than 30 minutes. Cartridge bearings cost only a few dollars each if ordered direct from the...
Forum: Bicycle Mechanics
06-03-24, 11:27 AM
Replies: 18
Views: 705
Posted By Dave Mayer

Note the splined interface with the latest...

Note the splined interface with the latest generation of Shimano external BBs: it is a smaller diameter than the original series of BBs. So you'll need (yet) another installation tool.
Forum: Classic & Vintage
06-03-24, 11:22 AM
Replies: 34
Views: 2,477
Posted By Dave Mayer

I owned one of these early cassette hubs. The...

I owned one of these early cassette hubs. The Uniglide (only) 6-speed freehub was a pressed-on fit, and I wanted to upgrade the wheel to 9-speed Hyperglide. The hole in the freehub was just a bit...
Forum: Bicycle Mechanics
06-01-24, 07:22 PM
Replies: 9
Views: 574
Posted By Dave Mayer

When I saw the set screw that was my exact...

When I saw the set screw that was my exact thought: cartridge bearings. If you do want to remove this screw, for whatever reason, marinate it in penetrating oil before the attempt, and then select a...
Forum: Bicycle Mechanics
05-27-24, 02:05 PM
Replies: 17
Views: 643
Posted By Dave Mayer

Good. The lockring was stamped: "9 Speed"? ...

Good. The lockring was stamped: "9 Speed"? Needs to be.
Forum: Road Cycling
05-27-24, 01:54 PM
Replies: 24
Views: 2,142
Posted By Dave Mayer

All Shimano dual-pivots from 7403 (circa 1992) on...

All Shimano dual-pivots from 7403 (circa 1992) on are great brakes. I've used almost all of them, including cheap RSX and RX100 models, and they were super stoppers. Being dual pivots, they are...
Forum: Bicycle Mechanics
05-27-24, 01:24 PM
Replies: 17
Views: 643
Posted By Dave Mayer

Which you don't have in this hub. You have the...

Which you don't have in this hub. You have the older 12mm (?) axle. The history with my Chorus hub was that it originally came with an 8-speed freehub. I found the alu splined 9 speed freehub in a...
Forum: Bicycle Mechanics
05-27-24, 10:39 AM
Replies: 17
Views: 643
Posted By Dave Mayer

Early 9 speed required a 26.0 diameter lockring. ...

Early 9 speed required a 26.0 diameter lockring. I have one of these hubs, and finding it locally was challenging to say the least. I did find one in the bottom of a drawer in a C & V shop; the...
Forum: General Cycling Discussion
05-22-24, 11:00 AM
Replies: 107
Views: 6,126
Posted By Dave Mayer

There is a huge amount of confusion regarding...

There is a huge amount of confusion regarding tubulars. First off, we're talking tubulars, not tubeless clinchers.

If I had no constraints regarding cost and time, I'd ride tubulars 100% of the...
Forum: Bicycle Mechanics
05-13-24, 10:22 PM
Replies: 42
Views: 2,319
Posted By Dave Mayer

Damn: somehow your posting got past my kill...

Damn: somehow your posting got past my kill filter; have to fix. Once again, and consistently, you've posted a useless nonsensical piece of nothing.

THE OP ASKED ABOUT CAMPAGNOLOLO SELF...
Forum: Bicycle Mechanics
05-13-24, 01:46 PM
Replies: 42
Views: 2,319
Posted By Dave Mayer

All Campy self-extracting bolts that I've seen...

All Campy self-extracting bolts that I've seen have been LH thread. Think about it: if the extractors were RH, then they would tend to unscrew themselves during arm removal.

These bolts do not...
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