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Search: Posts Made By: JohnDThompson
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07-17-19, 12:10 PM
Replies: 25
Views: 506
Posted By JohnDThompson

Wide, firm platform to support soft-soled shoes?...

Wide, firm platform to support soft-soled shoes? Check.

Accommodates slotted cleat? Check.

Looks "good" to me!
07-17-19, 07:37 AM
Replies: 25
Views: 506
Posted By JohnDThompson

MKS also makes an affordable copy of the Lyotard...

MKS also makes an affordable copy of the Lyotard mod. 23 pedal. The large tab on this design makes it easy to get your foot in the clip; an important featrure on a fixed gear bike particularly.
...
07-17-19, 07:22 AM
Replies: 9
Views: 245
Posted By JohnDThompson

The only difference between Record and Super...

The only difference between Record and Super Record hubs was the axle. Super Record used a titanium axle, while Record used a steel axle. You can determine this with a magnet; titanium is...
07-16-19, 04:51 PM
Replies: 10
Views: 281
Posted By JohnDThompson

Note that Campagnolo Gran Sport, Miche, Ofmega,...

Note that Campagnolo Gran Sport, Miche, Ofmega, Gipiemme, and probably other Campagnolo clone pedals of that era used parts that will interchange with Campagnolo Record pedals. The third-party...
07-16-19, 04:34 PM
Replies: 9
Views: 235
Posted By JohnDThompson

Not unusual, anyway. Supply-chain issues...

Not unusual, anyway. Supply-chain issues sometimes made one or the other unavailable, and there's no functional difference between them.
07-16-19, 04:13 PM
Replies: 9
Views: 235
Posted By JohnDThompson

Shimano SF. Trek used those interchangeably with...

Shimano SF. Trek used those interchangeably with Campagnolo 1010.
07-16-19, 11:47 AM
Replies: 31
Views: 642
Posted By JohnDThompson

Yes, that sounds right. 8mm x 0.75mm is the...

Yes, that sounds right. 8mm x 0.75mm is the standard thread for a regular chainring bolt, so you can check by threading a regular chainring bolt into one of the undamaged inner ring mounting holes.
...
07-16-19, 11:40 AM
Replies: 11
Views: 475
Posted By JohnDThompson

Well, there are some, anyway. The guy in the...

Well, there are some, anyway. The guy in the picture wearing the Campagnolo T-shirt is me. :)
07-16-19, 09:03 AM
Replies: 17,474
Views: 2,688,757
Posted By JohnDThompson

Front-wheel drive, FTW!

Front-wheel drive, FTW!
07-16-19, 08:59 AM
Replies: 10
Views: 281
Posted By JohnDThompson

Yes, 7mm x 0.75mm: ...

Yes, 7mm x 0.75mm:

http://www.os2.dhs.org/~john/campy-pedal-axle-thread.jpg
07-16-19, 08:44 AM
Replies: 20,998
Views: 2,023,653
Posted By JohnDThompson

An alternative would be to use a standard thread...

An alternative would be to use a standard thread fork and replace the 26tpi headset with a 24tpi headset.
07-16-19, 08:33 AM
Replies: 11
Views: 475
Posted By JohnDThompson

Here's a Bicycling! magazine article from 1984...

Here's a Bicycling! magazine article from 1984 showing the inside of the Trek factory at the time I was working there:

http://www.os2.dhs.org/~john/Trek/index.html
07-16-19, 08:14 AM
Replies: 31
Views: 642
Posted By JohnDThompson

While I'd also be reluctant to ride with only...

While I'd also be reluctant to ride with only four bolts, I should also point out that the inner ring mounting is quite different on the Avocet touring triple and the Sugino AT triple. The Avocet...
07-15-19, 12:28 PM
Replies: 14
Views: 369
Posted By JohnDThompson

Saddles are a personal choice; what works for me...

Saddles are a personal choice; what works for me doesn't necessarily work for you. The manufacturer can save a little money by using the same saddle on multiple models, and the dealer can make a...
07-13-19, 04:21 PM
Replies: 22
Views: 655
Posted By JohnDThompson

No worries. the lockring is supported by the cup...

No worries. the lockring is supported by the cup it surrounds, so even an aluminum lockring doesn't get distorted.
07-12-19, 08:51 PM
Replies: 2
Views: 272
Posted By JohnDThompson

Drill them out and replace them with copper...

Drill them out and replace them with copper rivets:

https://www.youtube.com/watch?reload=9&v=NZtRrxsxxao
07-12-19, 08:39 PM
Replies: 4
Views: 374
Posted By JohnDThompson

There is a tool for that BB: ...

There is a tool for that BB:

http://www.os2.dhs.org/~john/suntour-bb-tool.jpg

Fun fact: Phil Wood BB mounting rings will fit the SunTour cartridge, so if you ever want to use it in a frame with...
07-12-19, 08:33 PM
Replies: 42
Views: 1,978
Posted By JohnDThompson

Back in the early 80s, one of my co-workers at...

Back in the early 80s, one of my co-workers at Trek built himself a 12# lugged steel road bike, using all the fancy-pants weight-weenie components of the era: Zeus 2000 cranks and freewheel, Regina...
07-12-19, 05:43 PM
Replies: 22
Views: 655
Posted By JohnDThompson

Have you tried a lockring pliers rather than the...

Have you tried a lockring pliers rather than the hooked spanner? The official lockring pliers from e.g. VAR or Hozan tend to be expensive, but it's fairly trivial to fabricate a functional copy from...
07-12-19, 05:27 PM
Replies: 9
Views: 386
Posted By JohnDThompson

That you have play at some spots but not others...

That you have play at some spots but not others suggests that the bottom bracket shell may need facing. This may or may not solve your clicking problem.
07-12-19, 05:17 PM
Replies: 31
Views: 910
Posted By JohnDThompson

The way Mark Stonich at BikeSmithDesign shortens...

The way Mark Stonich at BikeSmithDesign shortens cranks is to drill and tap a new pedal eye closer to the spindle and then cut off and smooth the excess material along with the old pedal eye. Of...
07-12-19, 09:28 AM
Replies: 48
Views: 81,959
Posted By JohnDThompson

Some cranks do not have clearance for a gear...

Some cranks do not have clearance for a gear puller's arms to reach behind the crank; e.g. low-end MTB cranks with riveted chainrings.
07-12-19, 09:19 AM
Replies: 15
Views: 662
Posted By JohnDThompson

Internal cam skewers have greater mechanical...

Internal cam skewers have greater mechanical advantage than external cam skewers, and since the length of the lever arm is pretty much the same on each, it's harder to clamp an external cam skewer...
Forum: Road Cycling
07-11-19, 06:15 PM
Replies: 13
Views: 603
Posted By JohnDThompson

What benefits are you hoping to enjoy by...

What benefits are you hoping to enjoy by replacing the bike?

FWIW, I still find my 40 year old TS Isaac custom bike to be my preferred ride for century rides and other extended rides.
07-11-19, 02:49 PM
Replies: 5
Views: 353
Posted By JohnDThompson

What crank from what production year are you...

What crank from what production year are you intending to use with this bottom bracket?

http://www.os2.dhs.org/~john/campy-BB-specs.pdf
07-11-19, 02:29 PM
Replies: 10
Views: 1,700
Posted By JohnDThompson

Unless the extra length leads to a clearance...

Unless the extra length leads to a clearance problem somewhere, this is just a cosmetic issue.
07-11-19, 06:27 AM
Replies: 10
Views: 426
Posted By JohnDThompson

753 shouldn't be cold-set. Any reshaping of the...

753 shouldn't be cold-set. Any reshaping of the tubes needs to be done prior to heat treatment. Reynolds even shipped the fork blades pre-raked for that reason.

We tried to cold set a crashed team...
Forum: Road Cycling
07-10-19, 03:26 PM
Replies: 33
Views: 2,045
Posted By JohnDThompson

Thank you for your pedantry. Consider me properly...

Thank you for your pedantry. Consider me properly chastised.
07-09-19, 08:36 PM
Replies: 14
Views: 438
Posted By JohnDThompson

Is there a spacer on the non-drive-side you could...

Is there a spacer on the non-drive-side you could move to the drive side? Failing that, a thinner locknut and a spacer added to the drive side? Both these would call for re-dishing the wheel.
07-09-19, 11:09 AM
Replies: 7
Views: 417
Posted By JohnDThompson

It's possible the manufacturer or distributor...

It's possible the manufacturer or distributor would replace it. I had a plastic "Planet Bike" fender break, took it to the LBS, they gave the shards to the distributor, and a week later I had a new...
07-09-19, 06:43 AM
Replies: 31
Views: 910
Posted By JohnDThompson

TA "Carmina" cranks are available in 155mm,...

TA "Carmina" cranks are available in 155mm, 160mm, 162.5mm, 165mm, 167.5mm, 170mm, 172.5mm, 175mm, 177.5mm and 180mm lengths, but somewhat outside your $200 limit.
...
Forum: Road Cycling
07-08-19, 05:58 PM
Replies: 33
Views: 2,045
Posted By JohnDThompson

I'm not a fan of gel shorts. I prefer a thin...

I'm not a fan of gel shorts. I prefer a thin chamois, just enough to wick away sweat and prevent chaffing.
07-08-19, 05:26 PM
Replies: 20,998
Views: 2,023,653
Posted By JohnDThompson

I have several SW hubs here. The nice thing about...

I have several SW hubs here. The nice thing about them is they have fewer internal parts than the AW (and no fiddly pawl springs to go missing), so they're dead-easy to overhaul. The springless pawls...
07-06-19, 06:12 PM
Replies: 3
Views: 449
Posted By JohnDThompson

Yes, priced to move.

Yes, priced to move.
07-06-19, 12:26 PM
Replies: 3
Views: 449
Posted By JohnDThompson

Bottecchia f/f

64cm Bottecchia "Special" frame and fork. Ofmega headset included. US$25 plus shipping:

http://www.os2.dhs.org/~john/riverview/bottecchia/20190706_093557.jpg
...
07-05-19, 01:40 PM
Replies: 63
Views: 2,116
Posted By JohnDThompson

The formula will work with any units you want, as...

The formula will work with any units you want, as long as you're consistent throughout. E.g. don't measure the rim radius in inches and the hub radius in millimeters and expect it to work. Pick one...
07-05-19, 12:49 PM
Replies: 5
Views: 327
Posted By JohnDThompson

Wow. Made his own lugs and components even. I...

Wow. Made his own lugs and components even. I feel like a slacker.
07-05-19, 12:41 PM
Replies: 1,349
Views: 80,422
Posted By JohnDThompson

Whew! A lot of work for that! As you might...

Whew! A lot of work for that!

As you might expect, VAR does make a thin-profile wrench for that purpose:

http://www.os2.dhs.org/~john/var19.jpg
07-05-19, 12:27 PM
Replies: 13,461
Views: 2,684,103
Posted By JohnDThompson

The only thing wrong with the Y-foil is that UCI...

The only thing wrong with the Y-foil is that UCI forbade its use in sanctioned events. Not the bike's fault.
07-04-19, 11:37 AM
Replies: 63
Views: 2,116
Posted By JohnDThompson

The easy way is to use one of the on-line spoke...

The easy way is to use one of the on-line spoke length calculators, or download the spocalc.xls spreadsheet, find your hub and rim in the database, decide on a cross pattern, and let the software do...
07-04-19, 06:48 AM
Replies: 27
Views: 666
Posted By JohnDThompson

My July 4 ride & kit. Frame was built in 1979 in...

My July 4 ride & kit. Frame was built in 1979 in Boulder CO for the 1980 US Olympic cycling team.

http://www.os2.dhs.org/~john/july-4.jpg
07-03-19, 09:36 PM
Replies: 31
Views: 902
Posted By JohnDThompson

Yeah, but the Campagnolo offset wrench and the...

Yeah, but the Campagnolo offset wrench and the various clones thereof are far from ideal.

The Campagnolo two-bolt post (and its various clones) is one of my favorites, but the preferred tool to...
07-03-19, 09:06 PM
Replies: 50
Views: 2,255
Posted By JohnDThompson

I only have one bike with a kickstand, a 1972...

I only have one bike with a kickstand, a 1972 Raleigh Superbe I use as a city bike. But I do wear a helmet when I ride it.
07-03-19, 04:30 PM
Replies: 5
Views: 337
Posted By JohnDThompson

FWIW, Nikko one-piece, bulge-formed headtube/head...

FWIW, Nikko one-piece, bulge-formed headtube/head lug frame fittings were pretty widely used on mid-level Japanese frames.
07-03-19, 04:24 PM
Replies: 10
Views: 639
Posted By JohnDThompson

Having worked in bicycle manufacturing, I can say...

Having worked in bicycle manufacturing, I can say that there are many reasons why a new bike may not exactly match the catalog description: parts shortages, hold-ups in customs, unacceptable quality...
07-03-19, 06:32 AM
Replies: 40
Views: 1,690
Posted By JohnDThompson

I suspect those are a result of poorly-trained...

I suspect those are a result of poorly-trained department store bike assemblers. When bikes are shipped, the forks are usually turned backwards to allow use of a smaller box. The assembler probably...
07-02-19, 07:23 PM
Replies: 17
Views: 532
Posted By JohnDThompson

I was thinking more like this one (yer comin' out...

I was thinking more like this one (yer comin' out bolt; I don't take "no" for an answer):
...
07-02-19, 05:53 PM
Replies: 34
Views: 1,167
Posted By JohnDThompson

Ouch! I'd think those serrated jaws would really...

Ouch! I'd think those serrated jaws would really chew up the soft aluminum headset parts; that's why Shimano designed those scalloped wrenches in the first place, to minimize damage to the headset.
...
07-02-19, 05:07 PM
Replies: 1
Views: 356
Posted By JohnDThompson

The cartridge seals create some drag, which may...

The cartridge seals create some drag, which may be what you're feeling. Seal drag is utterly insignificant under load and as the shop said, over time the seals will wear in and the spindle will...
07-01-19, 07:38 PM
Replies: 17
Views: 842
Posted By JohnDThompson

Well, those of us who survived are, anyway....

Well, those of us who survived are, anyway. :innocent:
Showing results 1 to 50 of 1000
 


 
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