Search: Posts Made By: JohnDThompson
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08-15-18, 07:04 AM
Replies: 3
Views: 77
Posted By JohnDThompson

Shell width is only very loosely correlated with...

Shell width is only very loosely correlated with thread spec. While 68mm is the most frequent width for French-thread shells, anything is possible.

You say the original bottom bracket was TA. TA...
08-15-18, 06:49 AM
Replies: 3
Views: 124
Posted By JohnDThompson

Very nice shoes, and they're even my size. I'd be...

Very nice shoes, and they're even my size. I'd be all over them, but I already have a pair. Maybe I need to start channeling my inner Imelda Marcos:

http://www.os2.dhs.org/~john/vittoria-shoes.jpg
08-14-18, 09:53 PM
Replies: 7
Views: 170
Posted By JohnDThompson

No, they're not SunTour "Symmetric" levers but...

No, they're not SunTour "Symmetric" levers but pretty basic friction levers. If you're looking to replace them, a good upgrade would be the SunTour "Power" ratcheting shift levers.
...
08-13-18, 07:16 PM
Replies: 11
Views: 238
Posted By JohnDThompson

Yes, I've seen this before. I've never thought it...

Yes, I've seen this before. I've never thought it to be a good idea, but I suspect as long as you have a stem long enough that the expander wedge/cone sits below the slot and take care to keep your...
08-13-18, 07:01 PM
Replies: 10
Views: 213
Posted By JohnDThompson

The fork appears to be a "unicrown" fork, with...

The fork appears to be a "unicrown" fork, with the blades welded directly to the steer tube. It should be possible to assess the whole blade/steer tube joints without disassembly. The pictures do not...
08-13-18, 05:51 AM
Replies: 13
Views: 315
Posted By JohnDThompson

What benefit would a carbon fiber frame bring to...

What benefit would a carbon fiber frame bring to a commuter bike?
Forum: Framebuilders
08-12-18, 04:06 PM
Replies: 14
Views: 306
Posted By JohnDThompson

If you're going to use silver to attach the stays...

If you're going to use silver to attach the stays to the lug, it's a good idea to file a little trough into the side of the lug for the stay to seat into. This will give a larger surface area for the...
08-12-18, 03:10 PM
Replies: 14
Views: 323
Posted By JohnDThompson

I often wear heavy leather welder's gloves when...

I often wear heavy leather welder's gloves when doing jobs like that. Saved my knuckles many a time.
08-12-18, 08:37 AM
Replies: 3
Views: 178
Posted By JohnDThompson

Nuovo Tipo hubs have the "winged wheel" logo on...

Nuovo Tipo hubs have the "winged wheel" logo on the hub barrel, while Record hubs have the Campagnolo script overlying a globe:

http://www.os2.dhs.org/~john/campy-logos.jpg

There are...
08-12-18, 07:44 AM
Replies: 14
Views: 323
Posted By JohnDThompson

For a really stubborn job, I remove the arm(s)...

For a really stubborn job, I remove the arm(s) from the bike and clamp in a bench-mounted vise. Then a good pedal wrench, like the Park PW-4 Narhay mentioned above with optional cheater pipe slipped...
08-11-18, 06:16 AM
Replies: 6
Views: 129
Posted By JohnDThompson

As cpach notes, the vast majority of Raleighs...

As cpach notes, the vast majority of Raleighs will use standard English thread: 1.37" x 24tpi, and the drive side (aka "fixed") cup will have left-hand thread.

Raleigh 3-speed and some low-end...
08-10-18, 08:32 PM
Forum: Framebuilders
08-10-18, 05:31 PM
Replies: 15
Views: 572
Posted By JohnDThompson

FWIW, Paterek has an older edition of his book...

FWIW, Paterek has an older edition of his book available as a free PDF download on his web site:

http://www.timpaterek.com/paterek.pdf
08-10-18, 03:44 PM
Replies: 34
Views: 716
Posted By JohnDThompson

+1 this. While department store bikes tend to be...

+1 this. While department store bikes tend to be nothing special, most of the issues I run into in servicing them are assembly-related rather than component or design related. A well-tuned department...
08-09-18, 10:45 AM
Replies: 73
Views: 929
Posted By JohnDThompson

Oh, yes. It's been around for many years. My...

Oh, yes. It's been around for many years. My daughter has been a member for seven or eight years now, and my wife for three years. They're on summer hiatus now but will resume in the fall. You can...
08-08-18, 09:55 PM
Replies: 5
Views: 167
Posted By JohnDThompson

The vast majority are 56tpi regardless of spoke...

The vast majority are 56tpi regardless of spoke gauge, but there are exceptions:

http://www.os2.dhs.org/~john/spoke-threads.jpg
Source: Sutherland's 4th Edition
08-08-18, 09:39 PM
Replies: 73
Views: 929
Posted By JohnDThompson

I don't play an instrument, but my wife (also a...

I don't play an instrument, but my wife (also a cyclist, but not active on this venue) performs in our community Balinese Gamelan ensemble.
...
08-08-18, 09:29 PM
Replies: 12,638
Views: 1,051,179
Posted By JohnDThompson

I'm sorry for your loss. Memory is what sustains...

I'm sorry for your loss. Memory is what sustains us. About a week before my Dad died (also from cancer), he drew a self-portrait:

http://www.os2.dhs.org/~john/In_extremis.jpg
08-08-18, 01:08 PM
Replies: 7
Views: 305
Posted By JohnDThompson

Why not just use the B68 instead of the B72? IMO,...

Why not just use the B68 instead of the B72? IMO, the B68 is a better saddle anyway.
08-08-18, 12:58 PM
Replies: 19
Views: 364
Posted By JohnDThompson

Correct, the tool only checks the hanger...

Correct, the tool only checks the hanger alignment. A bent derailleur will typically have visible signs of damage. If, after verifying/correcting hanger alignment you still can't get shifting right,...
08-08-18, 06:53 AM
Replies: 34
Views: 618
Posted By JohnDThompson

??? I beg to differ. I've had bikes set up...

???

I beg to differ. I've had bikes set up both ways for decades, and no problem going back and forth between them. Same with going back and forth between a fixed gear and a freewheel bike, or...
08-07-18, 08:05 PM
Replies: 19
Views: 468
Posted By JohnDThompson

It depends on the cog. Some cheap cogs are simply...

It depends on the cog. Some cheap cogs are simply stamped out of sheet metal to form the teeth and a flange, and threads are cut into the flange. I've seen cases where these strip out, ruining the...
Forum: Road Cycling
08-07-18, 07:49 PM
Replies: 21
Views: 640
Posted By JohnDThompson

My experience working in a bike shop is that you...

My experience working in a bike shop is that you shouldn't expect to ride more. The paradox is, the times when the weather is nicest and you'd love to be out riding are exactly the times when the...
08-07-18, 06:35 PM
Replies: 25
Views: 474
Posted By JohnDThompson

I've never used CO2 and always carry a pump on...

I've never used CO2 and always carry a pump on the bike. But because of a recent accident I now have not just one, but two bum shoulders. The last time I flatted, I had a hard time pumping my tire...
08-07-18, 06:30 PM
Replies: 5
Views: 524
Posted By JohnDThompson

A caveat: I put a 9-speed Campagnolo Mirage rear...

A caveat: I put a 9-speed Campagnolo Mirage rear derailleur on my wife's bike with a 5-speed freewheel and had to replace the inner (low gear) limit adjuster with a longer bolt, otherwise the...
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