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Search: Posts Made By: Dave Mayer
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05-17-21, 09:47 PM
Replies: 12
Views: 271
Posted By Dave Mayer

So you've already received a wall of misleading...

So you've already received a wall of misleading or dead-end advice. Obviously, a Shimano rear derailleur will not shift correctly with your shifters. You need to establish what generation of...
05-12-21, 01:50 PM
Replies: 124
Views: 5,367
Posted By Dave Mayer

Rode through there yesterday. You'll want a bike...

Rode through there yesterday. You'll want a bike that can handle the terrain from Pitt Lake in the north to The Stomping Grounds in the south. From Alouette Lake in the east to Colony Farm in the...
04-26-21, 12:55 AM
Replies: 14
Views: 428
Posted By Dave Mayer

Put the wheel on the truing stand. Find the...

Put the wheel on the truing stand. Find the specific point on the wheel that is too far out from the hub. Tighten the closest single spoke by 360 degrees. In order to prevent that section of the...
04-19-21, 08:35 PM
Replies: 4
Views: 377
Posted By Dave Mayer

Good question. I am staring at a ZTTO or ZRACE...

Good question. I am staring at a ZTTO or ZRACE branded brake in which the distance between the 2 bolts on the back yoke is about 46mm. So if the distance between the bolt holes on a direct-mount...
Forum: Road Cycling
04-04-21, 12:06 AM
Replies: 96
Views: 2,424
Posted By Dave Mayer

The roads in the Lower Mainland are among the...

The roads in the Lower Mainland are among the best on the planet. No frost heaves or springtime gravel swales. No major road damage due to snowplows.

You should be able to ride 23mm tires...
Forum: Road Cycling
03-30-21, 01:24 PM
Replies: 73
Views: 3,040
Posted By Dave Mayer

Want an upgrade for the road... I think the...

Want an upgrade for the road... I think the obvious has been missed here. get a dedicated road bike, as it will be cheaper than the wheel options being tossed around here.

My recommendation: a...
03-24-21, 06:26 PM
Replies: 11
Views: 442
Posted By Dave Mayer

8 speed cassettes are available on Ebay. Miche...

8 speed cassettes are available on Ebay. Miche has also made Campy-compatible 8-speed cassettes. Then there are 8-speed Ergopower shifters, which are also available on Ebay, but they may need...
03-24-21, 12:29 PM
Replies: 11
Views: 442
Posted By Dave Mayer

Drew is 100% correct. I too upgraded a...

Drew is 100% correct.

I too upgraded a 8-speed Record hubset to fit modern cassettes, but this was last year. I found the very rare replacement freehub body at a local shop; it had been...
03-18-21, 09:42 PM
Replies: 57
Views: 2,389
Posted By Dave Mayer

Assuming you have a figure-8 bandage. Until the...

Assuming you have a figure-8 bandage. Until the clavicle is fully knitted do not - I repeat: do not remove it. Doing so, as I stupidly did 2 weeks in, caused the the partially-healed bone to...
03-18-21, 02:55 PM
Replies: 28
Views: 1,191
Posted By Dave Mayer

Tune up? Up to 3 days of time expended. Usually...

Tune up? Up to 3 days of time expended. Usually the cheapest customers are the ones whose bikes are the hardest to work on and feature the most complex problems. Customers whose bikes bristle with...
02-26-21, 01:27 PM
Replies: 10
Views: 374
Posted By Dave Mayer

Yeah, a wheel with a 130mm, 10-speed compatible...

Yeah, a wheel with a 130mm, 10-speed compatible cassette hub will work. Confirmed that you will need the spacer to fit a narrower 7-speed cassette.

These wheels are now selling for a song as...
02-26-21, 01:21 PM
Replies: 11
Views: 534
Posted By Dave Mayer

I once worked on a bike that required 3 days to...

I once worked on a bike that required 3 days to remove the brake calipers. Corroded tight. First tried a series of increasingly noxious and effective penetrating oils, marinating the nut from both...
Forum: Introductions
02-14-21, 02:21 PM
Replies: 3
Views: 229
Posted By Dave Mayer

Welcome! Or snow on the ground today. I built up...

Welcome! Or snow on the ground today. I built up a Tuscany over the summer for a pal; no drama, and the bike rides great!
02-05-21, 09:38 PM
Replies: 13
Views: 456
Posted By Dave Mayer

I dug around in my stash, and found a front...

I dug around in my stash, and found a front tubular wheel with an Assos rim and the matching nipples. These wheels are super light, and it is not just due to the use of alloy nipples. The nipples...
01-25-21, 01:36 PM
Replies: 4
Views: 391
Posted By Dave Mayer

Don't mean to hijack the thread, but I do indeed...

Don't mean to hijack the thread, but I do indeed need to know if Potenza and the new Centaur are cross compatible, and if not, why. I have gear in boxes waiting for installation, specifically...
01-25-21, 01:22 PM
Replies: 34
Views: 1,186
Posted By Dave Mayer

The shop discount? Ha ha... good...

The shop discount?


Ha ha... good observation - they don't. A freshly minted professional engineer who had done co-op terms in a fab shop would have a starting salary north of $100k. There...
01-22-21, 08:25 PM
Replies: 34
Views: 1,186
Posted By Dave Mayer

Best qualities in a mechanic? A masters degree...

Best qualities in a mechanic? A masters degree in mechanical engineering, and several years of floor-level experience in manufacturing/fabrication. Bike shop experience may not even be necessary,...
Forum: Road Cycling
01-14-21, 02:52 PM
Replies: 17
Views: 1,053
Posted By Dave Mayer

A current mechanical drivetrain is not going to...

A current mechanical drivetrain is not going to shift any better (speed, reliability, accuracy) than your current Sachs drivetrain. I have a couple of bikes from this era, with 90's era Campagnolo...
Forum: Road Cycling
01-12-21, 12:58 PM
Replies: 17
Views: 1,053
Posted By Dave Mayer

Sachs New Success.... A joint venture between...

Sachs New Success.... A joint venture between Sachs (German/French) and Campagnolo (Italian); 90s vintage. Campagnolo made the shifters and Sachs made the derailleurs according to Campagnolo cable...
01-05-21, 08:57 AM
Replies: 15
Views: 819
Posted By Dave Mayer

The tube stem banging against the rim.

The tube stem banging against the rim.
Forum: Road Cycling
12-31-20, 02:10 PM
Replies: 34
Views: 2,320
Posted By Dave Mayer

Wow: checked out the Caden website.. very...

Wow: checked out the Caden website.. very impressed. I have carbon Zipp's, Fast Forwards and Visions, but I'm tempted based on the technical specs and the price.


The 25mm tubulars weigh 940...
Forum: Road Cycling
12-30-20, 03:58 PM
Replies: 34
Views: 2,320
Posted By Dave Mayer

OK, I'll bite. So let's say there is 7 watts...

OK, I'll bite. So let's say there is 7 watts difference. Conti Competitions have butyl tubes, so you should be comparing Vittoria clinchers with latex tubes and Vittoria tubulars with latex tubes. ...
12-30-20, 03:40 PM
Replies: 28
Views: 1,504
Posted By Dave Mayer

OK - so I skimmed the sheets. As expected, the...

OK - so I skimmed the sheets. As expected, the Regular is close to 100% petroleum distillates. Basically medium-chain hydrocarbon molecules, somewhere between butane and paraffin wax. You would not...
Forum: Road Cycling
12-30-20, 01:44 PM
Replies: 34
Views: 2,320
Posted By Dave Mayer

This. Finally, someone who 'gets it'. ...

This. Finally, someone who 'gets it'.


Compared to tubulars, the clincher (including tubeless) rim profile features nothing but disadvantages. The two hooks on clinchers that project downwards...
12-28-20, 03:43 PM
Replies: 28
Views: 1,504
Posted By Dave Mayer

I've forgotten chains and other metal bike parts...

I've forgotten chains and other metal bike parts in mineral spirits in containers for months with no effects. Having a university chemistry degree, I cannot conceive how pure mineral spirits could...
12-18-20, 01:57 PM
Replies: 23
Views: 1,015
Posted By Dave Mayer

I have about 100 pounds of freewheel stuff,...

I have about 100 pounds of freewheel stuff, including an extensive collection of Dura-Ace, Sante, 600, Winner and Winner Pro and Sachs bodies and cogs.

7/8 speed Dura-Ace freewheel and cassette...
12-18-20, 01:44 PM
Replies: 13
Views: 746
Posted By Dave Mayer

I have seen rims where just one side has 'flexed'...

I have seen rims where just one side has 'flexed' a little causing the misalignment. No big deal; use the wrench fix as I previously described.
12-16-20, 09:10 PM
Replies: 10
Views: 479
Posted By Dave Mayer

This hub was made for 6/7 speed freewheels. ...

This hub was made for 6/7 speed freewheels. 126mm OLD. Somebody moved the axle parts around to make it work with a narrower 5-speed cluster.

If you take the 3 washers on the non-drive side and...
12-16-20, 08:59 PM
Replies: 13
Views: 746
Posted By Dave Mayer

If the rim joint is not welded, then you can fix...

If the rim joint is not welded, then you can fix this with a small adjustable wrench. Deflate the tire. Use the adjustable wrench to twist the two ends of the rim so that they are in alignment.
12-05-20, 08:39 PM
Replies: 23
Views: 754
Posted By Dave Mayer

An excess of thinking going on here... 3 cross...

An excess of thinking going on here... 3 cross and be done with it. Use double-butted spokes for both weight reductions and increased longevity.

Reduced weight due to 2 cross or radial? CX33 rims...
12-04-20, 08:50 PM
Replies: 20
Views: 2,006
Posted By Dave Mayer

Wow: someone actually did digest my tedious essay...

Wow: someone actually did digest my tedious essay on the servicing of a Campy derailleur.

OK: I'm impressed. Finding the two tiny brass bushings indicates that you did get down deep into the...
12-04-20, 01:48 PM
Replies: 23
Views: 754
Posted By Dave Mayer

Dura-Ace 7700 hubs were not designed for radial...

Dura-Ace 7700 hubs were not designed for radial lacing. Flanges not thick enough. Adhering to Shimano's instructions will prevent you from doing something foolish, such as radial lacing.
...
11-30-20, 12:41 PM
Replies: 18
Views: 3,219
Posted By Dave Mayer

Great minds think alike..... So when Shimano...

Great minds think alike..... So when Shimano 11-speed (and Tiagra 10-speed) came out with the modified derailleur geometries, I saw that too. Naturally, I was interested in the prospect of running...
11-29-20, 06:59 PM
Replies: 18
Views: 3,219
Posted By Dave Mayer

Shimano rear derailleurs (most models in the 7 to...

Shimano rear derailleurs (most models in the 7 to 10 speed era) had an actuation ratio of 1.67 to 1.00. That is on average across the cassette. When SIS was introduced in 1984 with Dura-Ace, Shimano...
11-16-20, 11:34 PM
Replies: 87
Views: 3,421
Posted By Dave Mayer

Dura-Ace 7700 and 7800 are the best shifting STI...

Dura-Ace 7700 and 7800 are the best shifting STI shifters ever. When Shimano moved the cable housings under the bar tape, it introduced sharper cable bends and more friction. This was offset...
11-16-20, 12:35 PM
Replies: 17
Views: 857
Posted By Dave Mayer

There are 2 cart bearings in the Campy freehub;...

There are 2 cart bearings in the Campy freehub; the inner bearing never wears out or gets contaminated. The inner is held in place with a circlip. The outer bearing is always the one that needs...
11-14-20, 03:28 PM
Replies: 17
Views: 857
Posted By Dave Mayer

Another hint with these hubs: in order to keep...

Another hint with these hubs: in order to keep the pawls and springs in place while re-inserting the freehub, wrap them with 2 revolutions of dental floss. Then partially insert the freehub until...
11-14-20, 03:22 PM
Replies: 17
Views: 857
Posted By Dave Mayer

OK - sorry I'm late here. So this is a...

OK - sorry I'm late here.

So this is a 8-speed Campy Mirage cassette hub. As with the least expensive Campy offerings, it uses 2 cartridge bearings for the main bearings, instead of the superior...
10-29-20, 12:25 PM
Replies: 26
Views: 1,445
Posted By Dave Mayer

Dura-Ace 7700 hubs: best ever. Superior cup and...

Dura-Ace 7700 hubs: best ever. Superior cup and cone design, first-rate materials and finish, well sealed and resistant to water and dirt, and standardized parts that allow these hubs to keep...
10-27-20, 01:39 PM
Replies: 17
Views: 770
Posted By Dave Mayer

You had me worried to the point where I checked...

You had me worried to the point where I checked my stash. I have about 15 Campy cartridge BB's in stock including Record, Chorus and Centaur, in Italian and English variants.

So the core of the...
Replies: 15
Views: 1,033
Posted By Dave Mayer

I own a similar Vitus. Spending a couple of...

I own a similar Vitus. Spending a couple of minutes staring at the pics, here's just the tip of the iceberg:


The rear stay spacing on this bike is 126mm. How did the owner stuff a 9-speed...
10-26-20, 02:28 PM
Replies: 17
Views: 770
Posted By Dave Mayer

Not quite. Chorus and Record cups are...

Not quite. Chorus and Record cups are interchangeable, with the English and Italian cups are swappable as well.

However: Centaur cups do NOT fit the Chorus and Record cores and vice-versa.

I...
10-25-20, 06:00 PM
Replies: 4
Views: 279
Posted By Dave Mayer

Your short cage rear derailleur should be able to...

Your short cage rear derailleur should be able to handle a 29 tooth rear cog. So i suggest a Miche 12-29 9-speed cassette. Less than $35. If you need still lower gears, then a compact crankset is...
10-17-20, 05:08 PM
Replies: 29
Views: 1,549
Posted By Dave Mayer

Look at a cross section of a clincher rim -...

Look at a cross section of a clincher rim - tubeless or otherwise. There are two narrow projections ('hooks') on each side of the rim that face downwards towards the road. Let's think this...
10-12-20, 03:16 PM
Replies: 47
Views: 3,011
Posted By Dave Mayer

I was not referring to a 'vintage' bike as being...

I was not referring to a 'vintage' bike as being better than the latest and greatest of 2020. I was referring to a UCI-level (team) bike from say 2015 versus a current $10k consumer bike off the...
10-08-20, 02:40 PM
Replies: 47
Views: 3,011
Posted By Dave Mayer

Relax: this is the Intraweb - it isn't real. You...

Relax: this is the Intraweb - it isn't real. You may have been piled-on by early-adopter types desperate to justify their most recent misguided purchases, but your current bike is better than what...
09-27-20, 11:25 AM
Replies: 56
Views: 14,167
Posted By Dave Mayer

I have a Gitane Tour de France kitted out with a...

I have a Gitane Tour de France kitted out with a SX630 rear derailleur that indexes fine. Not great, but adequate. The SX630 is the all-metal variant of your SX610. Aside: I have used the SX610,...
09-23-20, 12:06 PM
Replies: 14
Views: 512
Posted By Dave Mayer

Shimano M520s are one of the great bargains in...

Shimano M520s are one of the great bargains in cycling. Excellent design, construction, materials and performance. As good as anyone needs, unless you are shaving grams and are willing to pay big $...
09-20-20, 11:54 AM
Replies: 5
Views: 530
Posted By Dave Mayer

I have a Superbe Pro front hub like this in a...

I have a Superbe Pro front hub like this in a wheel that has been in regular service for the last 30 years. 3rd rim. As a preventative measure, I spend 10 minutes every few years to take it apart,...
09-10-20, 02:42 PM
Replies: 42
Views: 1,823
Posted By Dave Mayer

OK, now I've been drawn into this tedious...

OK, now I've been drawn into this tedious peripheral debate. I volunteer at a high-volume bike Co-op as a mechanic. I've seen everything, including many drivetrains where our customers ride with a...
Showing results 1 to 50 of 1000
 


 
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