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Search: Posts Made By: Dave Mayer
Showing results 1 to 50 of 143
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08-02-22, 11:15 AM
Replies: 18
Views: 371
Posted By Dave Mayer

Ummm.. is picture #2 your cassette? If it is,...

Ummm.. is picture #2 your cassette? If it is, then someone has taken 9 or 10-speed Campy cassette cogs, removed the original spacers and one or 2 cogs, and converted it to a 8-speed cassette.

If...
Forum: Road Cycling
07-20-22, 01:51 PM
Replies: 51
Views: 1,618
Posted By Dave Mayer

Precise language: your Chris King BB was not a...

Precise language: your Chris King BB was not a 'bunch of parts', but consisted of 2 cups which threaded into the bike frame. In each of those cups, there was a single cartridge bearing that had been...
Forum: Road Cycling
07-20-22, 11:39 AM
Replies: 51
Views: 1,618
Posted By Dave Mayer

Sigh.. all current bottom brackets are press-fit....

Sigh.. all current bottom brackets are press-fit. So even if you buy something threaded, the 2 cartridge bearings at the core of the BB have been press-fit into their BB shells. Even current...
07-15-22, 02:46 PM
Replies: 2
Views: 204
Posted By Dave Mayer

Proper shifting depends on the rear derailleur...

Proper shifting depends on the rear derailleur matching the shifters. Not all derailleurs perform the same, even within the Campy timeline.

For example, Campy changed their derailleur geometry in...
07-02-22, 10:55 AM
Replies: 36
Views: 1,122
Posted By Dave Mayer

Excellent! I did not know about Travel Agents,...

Excellent! I did not know about Travel Agents, which could allow me to install XTR V's on my 'cross bikes. Aside from avoiding constant squeaking, squealing and rubbing, another benefit of the...
07-01-22, 09:34 PM
Replies: 36
Views: 1,122
Posted By Dave Mayer

OK... precise terminology required. On every set...

OK... precise terminology required. On every set of canti and V-brakes I am aware of, the arms have a simple hole in the bottom that is lined with brass or steel. On brake installation, this hole...
06-29-22, 03:19 PM
Replies: 48
Views: 1,381
Posted By Dave Mayer

Our local shops on average will give you a basic...

Our local shops on average will give you a basic fit, and might be willing to swap (like for like) stems if it doesn't involve changing out all the cables and housing runs. They also provide...
06-28-22, 07:52 PM
Replies: 7
Views: 347
Posted By Dave Mayer

I just did a cleaning of a BB72-41. A customer...

I just did a cleaning of a BB72-41. A customer had thrown it away; it didn't feel too crunchy, but water had definitely got inside the frame and left a grimy mess.

It only took a few minutes to...
06-23-22, 11:52 AM
Replies: 4
Views: 219
Posted By Dave Mayer

Mid-range Shimano stuff is one of the great...

Mid-range Shimano stuff is one of the great bargains in cycling. I would never take Joytech over Shimano, unless the Shimano hubs or the rest of the wheel components were worn out or the rims...
06-23-22, 11:41 AM
Replies: 16
Views: 602
Posted By Dave Mayer

Shimano Uniglide cassette hub.. I rode on these...

Shimano Uniglide cassette hub.. I rode on these for years. Good system, and superior to freewheel hubs as explained above.

You'll need to keep the #1 threaded cog to hold everything together;...
Forum: Touring
06-14-22, 07:30 PM
Replies: 20
Views: 1,012
Posted By Dave Mayer

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

I volunteer at a big city high volume bike Co-op. Our mission is to recycle, reuse and provide low-cost bike solutions for the community.

Please do NOT donate your worn and/or mangled chain to...
06-10-22, 01:06 PM
Replies: 391
Views: 9,814
Posted By Dave Mayer

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

I volunteer at a big city high-volunteer bike Co-op. We see large volumes of donations come in every week, many of which are wheelsets. Last week we had some Zonda's and some DT Swiss get dropped...
06-09-22, 11:47 AM
Replies: 5
Views: 208
Posted By Dave Mayer

Just by pure coincidence, I am attempting to...

Just by pure coincidence, I am attempting to revive a Stan's Notubes ZTR Alpha 340 wheelset, which includes a Stan's 3.30R freehub. My freehub is labelled: CHO-13 and SEN-07. A little research...
06-08-22, 11:16 AM
Replies: 391
Views: 9,814
Posted By Dave Mayer

Yes, perspective... Most new road cyclists come...

Yes, perspective... Most new road cyclists come from a MTB background, so 18 pounds is feathery. Coming from a road background, 18 pounds is heavy – uncompetitive heavy. I suppose bike weight...
06-08-22, 12:28 AM
Replies: 391
Views: 9,814
Posted By Dave Mayer

I spent much of today riding a current $5k road...

I spent much of today riding a current $5k road bike with discs and 32mm tires (GP 5000s). The bike is a boat anchor; at over 18 pounds it weighs about 2 pounds more than a similarly spec'd and...
06-07-22, 07:11 PM
Replies: 6
Views: 196
Posted By Dave Mayer

A cassette that goes to 36 teeth exceeds the...

A cassette that goes to 36 teeth exceeds the capacity of your 105 rear derailleur. If you have the older 105 (5800 long cage) unit, the maximum rated capacity is 32t. If you have the newer 7000...
06-03-22, 12:08 PM
Replies: 21
Views: 857
Posted By Dave Mayer

Yeah, gasoline is a better degreaser than mineral...

Yeah, gasoline is a better degreaser than mineral spirits. Somewhat more flammable - responsible adult precautions apply.

My go-to solvent for really tough jobs is white gas, otherwise marketed...
06-03-22, 01:00 AM
Replies: 21
Views: 857
Posted By Dave Mayer

Solubility - Wikipedia...

Solubility - Wikipedia (https://en.wikipedia.org/wiki/Solubility)

Summary: 'like dissolves like'. Non-polar molecules (hydrocarbons such as grease and oils) have minimal solubility in strongly...
06-02-22, 11:23 AM
Replies: 21
Views: 857
Posted By Dave Mayer

Chemist here... Water-based solutions are...

Chemist here... Water-based solutions are inherently poor at degreasing. Chemistry 101. Mineral spirits (a petroleum cut) are relatively good compromise in terms of degreasing effectiveness, toxicity...
05-20-22, 11:52 AM
Replies: 16
Views: 585
Posted By Dave Mayer

I agree that the errant spoke should be dealt...

I agree that the errant spoke should be dealt with. This is a 5-minute job; you don't even have to take the tire off or even take the wheel off of the bike.

When you unwind the offending spoke, do...
05-13-22, 03:01 PM
Replies: 27
Views: 925
Posted By Dave Mayer

Thanks. You would think that helping low-income...

Thanks. You would think that helping low-income folks fix bikes themselves would be more than enough of a mission for a Co-op. However, when the social justice activists take power within the...
05-13-22, 12:41 PM
Replies: 27
Views: 925
Posted By Dave Mayer

Local shops will donate useful used parts and...

Local shops will donate useful used parts and surplus inventory to you if you establish a good initial relationship. If you are serving a low-income/classic and vintage/cheap hobbyist demographic,...
04-16-22, 11:26 AM
Replies: 8
Views: 291
Posted By Dave Mayer

Good luck! Make sure that the couriers (any)...

Good luck! Make sure that the couriers (any) don't touch the package. If they do, they'll charge all forms of bogus 'cross-border' charges such as 'import fees', 'sales taxes' etc, where no such...
04-03-22, 11:26 AM
Replies: 35
Views: 1,549
Posted By Dave Mayer

Terminology is a problem here... I think you are...

Terminology is a problem here... I think you are referring to 'cartridge bearings'.

Both cartridge and cup and cone bearings can be well sealed or poorly sealed. In isolation, a simple air dam...
03-18-22, 02:07 PM
Replies: 16
Views: 468
Posted By Dave Mayer

One more thing: when you install the balls, did...

One more thing: when you install the balls, did you use enough thick grease to keep the balls in place during re-assembly, and did you make double-sure that all the balls were positioned properly in...
02-13-22, 12:22 PM
Replies: 15
Views: 447
Posted By Dave Mayer

FastJake got it right: the longer the caliper...

FastJake got it right: the longer the caliper arms, the more mechanical advantage, at the expense of pad travel. The longer the calipers, the stronger the braking, but you have to run the pads...
02-08-22, 12:28 PM
Replies: 65
Views: 2,854
Posted By Dave Mayer

If I were forced to buy a new road bike right...

If I were forced to buy a new road bike right now, I would seriously consider the Aethos. Top choice of anything new out there I've seen. Lightweight, appropriate geometry, and no PITA integrated...
02-05-22, 05:13 PM
Replies: 10
Views: 992
Posted By Dave Mayer

I had a Dura-Ace 7800 right-hand shifter with...

I had a Dura-Ace 7800 right-hand shifter with exactly these same symptoms. Turns out that a cable end had snapped off and hidden/lodged itself inside of the shifter mechanism. Took 5 years of on...
01-27-22, 11:30 AM
Replies: 6
Views: 542
Posted By Dave Mayer

Nipples too long: On inexpensive single-wall...

Nipples too long: On inexpensive single-wall rims, the spokes cannot protrude above the nipples, or the sharp ends will get through the rim strip and puncture the tube. On double-wall rims, I have...
Forum: Touring
01-25-22, 07:01 PM
Replies: 28
Views: 1,600
Posted By Dave Mayer

Technically no issues. Depends on your data plan...

Technically no issues. Depends on your data plan as to how much it will cost. Make sure you work this out in advance to avoid a $2,000 data 'Roaming' charge when you get back.

Many Canadians do...
01-20-22, 09:25 PM
Replies: 51
Views: 1,336
Posted By Dave Mayer

I always wear a cycling cap underneath my helmet,...

I always wear a cycling cap underneath my helmet, for sweat retention and a little sun shade for the eyes. There have been several times that I felt a tick on my helmet, followed by a crawling...
01-20-22, 01:32 PM
Replies: 28
Views: 794
Posted By Dave Mayer

The only real upside of Dura-Ace cassettes is the...

The only real upside of Dura-Ace cassettes is the weight reduction from the largest 3 or 4 titanium cogs that are connected together with an alu spider.

The rest of the steel cogs are essential...
Forum: Road Cycling
01-13-22, 08:15 PM
Replies: 61
Views: 3,156
Posted By Dave Mayer

In terms of performance, tubulars are superior to...

In terms of performance, tubulars are superior to clinchers (and tubeless) in every respect. And it is not the tires, but the rim profile. The superior tubular rim profile, that lacks the 'hooks'...
01-05-22, 02:28 PM
Replies: 9
Views: 459
Posted By Dave Mayer

I've pulled apart and successfully reassembled...

I've pulled apart and successfully reassembled many dual-pivot brakes. This isn't something you'd do on a cheap set of calipers, but if it revives something labelled: 'Record' or 'Dura-Ace', then it...
12-31-21, 12:26 PM
Replies: 15
Views: 472
Posted By Dave Mayer

The bike Co-op that I wrench at rarely sees...

The bike Co-op that I wrench at rarely sees 10-speed bikes because these are too modern to be donated to us, or expensive to be ridden by our clients.

We work on mostly 7-speed era 26" wheel...
Replies: 30
Views: 1,738
Posted By Dave Mayer

I own a Montello from '86. I've ridden a lot of...

I own a Montello from '86. I've ridden a lot of bikes, and the Montello is right up there with the very best. A great bike for long rides; not a touring bike, this was probably designed for classics...
12-24-21, 07:26 PM
Replies: 109
Views: 3,665
Posted By Dave Mayer

You don't need big tubular tires. First off, a...

You don't need big tubular tires. First off, a tubular has more 'useful' air volume than a clincher/tubeless of the same nominal size. On a clincher rim, the air between the brake tracks does not...
12-24-21, 12:59 PM
Replies: 109
Views: 3,665
Posted By Dave Mayer

Summarizing my 45 years of experience on...

Summarizing my 45 years of experience on clinchers and tubulars:

Flatting on tubulars: straighten you line and ride it out. Same flat on clinchers: terrifying life-threatening experience.
I've...
Forum: Foo
12-13-21, 06:58 PM
Replies: 70
Views: 2,441
Posted By Dave Mayer

Ha! Indeed. If soccer was played on ice using...

Ha! Indeed. If soccer was played on ice using skates, it would speed the play considerably. Enclose the pitch with boards so the ball wasn't always going off the field. Then, replace the ball...
Forum: Road Cycling
12-09-21, 03:51 PM
Replies: 50
Views: 3,814
Posted By Dave Mayer

Same experience here. I'm riding a fresh Giant...

Same experience here. I'm riding a fresh Giant TCR with discs and stock wheels. Tires are Conti 5000 clinchers: 28 up front and a 32 in the rear. Bike rides like a farm tractor compared to some of...
11-25-21, 04:11 PM
Replies: 22
Views: 918
Posted By Dave Mayer

Brace yourself. One local Co-op had a homeless...

Brace yourself. One local Co-op had a homeless camp move into close proximity, and eventually grow to a population of hundreds. I spent many afternoons and evenings at the shop helping out as a...
11-13-21, 06:13 PM
Replies: 160
Views: 6,045
Posted By Dave Mayer

The bike industry is small and does not pay well...

The bike industry is small and does not pay well at any level. So the little real innovation that does occur is limited to the few who have the resources to rent out wind tunnels, pay for...
11-12-21, 02:59 PM
Replies: 23
Views: 528
Posted By Dave Mayer

I spent much of the 80's punishing my bike and...

I spent much of the 80's punishing my bike and body riding over roots and rocks. In those days, all 'mountain bikes' had 1" threaded headsets. I faced the constant problem with headset loosening,...
11-11-21, 01:30 PM
Replies: 113
Views: 8,004
Posted By Dave Mayer

I can sympathize with a shop being reluctant to...

I can sympathize with a shop being reluctant to sell just parts. Basic consumables such as cables, tubes, tires, housing etc. are hard to come by. The wholesalers who supply our shop are cleaned...
10-30-21, 12:20 PM
Replies: 32
Views: 1,736
Posted By Dave Mayer

Exactly. With little risk of pinch flats,...

Exactly. With little risk of pinch flats, tubulars can be run at very low pressures. And since tubular tires have a larger effective size (greater protective air volume for a given nominal diameter),...
10-30-21, 12:01 PM
Replies: 32
Views: 1,736
Posted By Dave Mayer

Due to the inherent and insurmountable advantages...

Due to the inherent and insurmountable advantages of the tubular rim profile, tubulars will always be ridden (almost exclusively) at the highest levels of the sport. Track, 'cross, MTB and road. If...
10-29-21, 02:45 PM
Replies: 32
Views: 1,077
Posted By Dave Mayer

I've only read the original post, so my apologies...

I've only read the original post, so my apologies if I cover redundant content.

First, if you only need new cones, then you should just replace the cones. Same thread specs and roughly matching...
10-15-21, 02:52 PM
Replies: 27
Views: 916
Posted By Dave Mayer

I've owned a bike with Tiagra 4600. This gear is...

I've owned a bike with Tiagra 4600. This gear is as good as anyone needs. Because the shift cables run outside of the bar wrap, they feature smoother shifting. When Shimano put the cables under the...
09-29-21, 01:30 PM
Replies: 15
Views: 591
Posted By Dave Mayer

Old Dura-Ace had a derailleur actuation ratio...

Old Dura-Ace had a derailleur actuation ratio that was higher than the lower-tier SIS systems. So whereas the rest of their systems had an actuation ratio of 1.67: 1, old Dura-Ace was about 1.9: 1. ...
09-21-21, 07:14 PM
Replies: 38
Views: 1,872
Posted By Dave Mayer

I volunteer regularly at a busy bike Co-op....

I volunteer regularly at a busy bike Co-op. Please donate your good stuff to your local Co-op, it makes a major difference in keeping decent older bikes on the roads.

We rarely see usable brifters...
Showing results 1 to 50 of 143
 


 
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