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Search: Posts Made By: JohnDThompson
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08-24-19, 07:25 PM
Replies: 25
Views: 497
Posted By JohnDThompson

With the elastic to retain the waste, why would...

With the elastic to retain the waste, why would you need Depends®?
08-24-19, 07:22 PM
Replies: 25
Views: 497
Posted By JohnDThompson

Good lord. I hope so. :eek:

Good lord. I hope so. :eek:
08-24-19, 07:19 PM
Replies: 8
Views: 249
Posted By JohnDThompson

The Cannondale has larger diameter frame tubes...

The Cannondale has larger diameter frame tubes and will be stiffer than the steel frame. Whether or not you find this preferable to the steel bike is a subjective judgement. In general,...
08-23-19, 08:39 PM
Replies: 12
Views: 372
Posted By JohnDThompson

I don't know how much "value" one might attribute...

I don't know how much "value" one might attribute to the old catalogs, but they can at least be useful.

A decade or so ago Sheldon Brown and I collaborated on putting a 1980s vintage VAR catalog...
08-23-19, 11:16 AM
Replies: 8
Views: 463
Posted By JohnDThompson

I remember that as well. They even let me ride on...

I remember that as well. They even let me ride on it; quite a hoot!
08-22-19, 01:32 PM
Replies: 8
Views: 413
Posted By JohnDThompson

Unless you're racing on a track, there's no...

Unless you're racing on a track, there's no problem using a quick release on the rear wheel, either. Just be sure to use a traditional, enclosed-cam quick release rather than those new-fangled...
08-22-19, 01:29 PM
Replies: 4
Views: 258
Posted By JohnDThompson

Yes. 1/8" chain works fine on 3/32" chainrings...

Yes. 1/8" chain works fine on 3/32" chainrings and/or single cogs/single freewheels.
Forum: Road Cycling
08-21-19, 01:38 PM
Replies: 42
Views: 1,110
Posted By JohnDThompson

There's no compelling reason to remove old glue...

There's no compelling reason to remove old glue from the rim bed. If it gets on the sidewalls and you have rim brakes, then you might want to clean that much off.
08-21-19, 01:03 PM
Replies: 18
Views: 557
Posted By JohnDThompson

If the pitting isn't too bad, sometimes you can...

If the pitting isn't too bad, sometimes you can eliminate "indexed steering" simply by using loose balls instead of retained balls. Often you can use at least one more ball than the retainer held,...
08-21-19, 12:54 PM
Replies: 15
Views: 530
Posted By JohnDThompson

Do at least spend a few bucks for a decent spoke...

Do at least spend a few bucks for a decent spoke wrench. Nothing ruins spoke nipples faster than using pliers.

You can true the wheels while they're in the bike, using the brake pads as reference...
08-21-19, 06:35 AM
Replies: 16
Views: 26,074
Posted By JohnDThompson

Zeus cranks could be had in either metric (14mm x...

Zeus cranks could be had in either metric (14mm x 1.25) or BCS (9/16" X 20TPI) thread. The back of a BCS-thread arm will be marked "BCS" while a metric thread arm will be unmarked.

N.B. a metric...
08-20-19, 12:27 PM
Replies: 30
Views: 973
Posted By JohnDThompson

+1 this. Especially toward the end of, say, a...

+1 this. Especially toward the end of, say, a hundred mile fixed gear ride. Legs want to take a bit of a break on the downhills by then.
Forum: Road Cycling
08-20-19, 12:19 PM
Replies: 42
Views: 1,110
Posted By JohnDThompson

I've used a lot of different tire cements over...

I've used a lot of different tire cements over the years and not one of them has been as noxious as other things commonly used in apartments, e.g. oven cleaners, roach sprays, wall paint, cigarettes,...
08-20-19, 11:16 AM
Replies: 20
Views: 738
Posted By JohnDThompson

on the rivet [definition] Extreme physical...

on the rivet [definition]
Extreme physical exertion to the point of almost giving up. Derived from bike racing in the olden days when bike seats had rivets, and in an effort not to get dropped one...
08-19-19, 08:04 PM
Replies: 14
Views: 488
Posted By JohnDThompson

Assuming original fork, it should be 26.4mm

Assuming original fork, it should be 26.4mm
08-19-19, 07:28 AM
Replies: 11
Views: 414
Posted By JohnDThompson

I've used both Uniglide and non-Uniglide chains...

I've used both Uniglide and non-Uniglide chains on my Dura-Ace freewheels and frankly haven't noticed any performance difference. Non-Uniglide chains are much easier to find and cost less, so that's...
08-18-19, 08:46 PM
Replies: 1,339
Views: 108,225
Posted By JohnDThompson

That occurred to me as well. I used Continental...

That occurred to me as well. I used Continental adhesive for aluminum rims, in my case.
08-18-19, 12:14 PM
Replies: 10
Views: 565
Posted By JohnDThompson

The cone wrench will allow you to remove the axle...

The cone wrench will allow you to remove the axle to clean the bearings, but you'll need to remove the freewheel to get access to the drive side bearings. So you'll need both tools.

N.B. you might...
Forum: Road Cycling
08-18-19, 12:06 PM
Replies: 121
Views: 8,253
Posted By JohnDThompson

BITD, the top pros could insist on a frame from a...

BITD, the top pros could insist on a frame from a custom builder, but it would be re-badged to look like the sponsor's bike. Masis, De Rosas, etc. would be painted and decaled as Peugeots, Gitanes,...
08-18-19, 11:20 AM
Replies: 7
Views: 397
Posted By JohnDThompson

I like to use "odorless mineral spirits" aka OMS,...

I like to use "odorless mineral spirits" aka OMS, available as a paint thinner at many hardware stores. But apparently not in California.

"Grade 25" balls are what the top-end hubs use. You can...
08-18-19, 07:13 AM
Replies: 13
Views: 414
Posted By JohnDThompson

First, is it "play," or is it a "wobble?" The...

First, is it "play," or is it a "wobble?" The thread title suggests one, but the text suggests the other.

"Play" can be detected when the wheel is stationary. If the rim can be moved sideways...
08-17-19, 06:52 PM
Replies: 24
Views: 658
Posted By JohnDThompson

Yeah, they were fairly widely available. Silva...

Yeah, they were fairly widely available. Silva still offers them:

http://www.framebuilding.com/Graphicpages/014_BRIDGES2003.gif
Bridges (http://www.framebuilding.com/brake.htm)
Forum: Road Cycling
08-17-19, 06:42 PM
Replies: 14
Views: 613
Posted By JohnDThompson

Just curious: what benefit would a PTFE coating...

Just curious: what benefit would a PTFE coating confer on a single-speed/fixed gear drivetrain?
Forum: Road Cycling
08-17-19, 06:37 PM
Replies: 41
Views: 2,178
Posted By JohnDThompson

No stores where I like to ride, so I have to...

No stores where I like to ride, so I have to carry any food I may need. I can get water in the State Park, either from the Park Office or one of the outdoor spigots in the campground.
08-17-19, 05:14 PM
Replies: 24
Views: 658
Posted By JohnDThompson

I think I see five ribs in the steer tube, but I...

I think I see five ribs in the steer tube, but I can't tell if they're helical or straight. Helical ribs would suggest Columbus; straight ribs would suggest Ishiwata.

Tange also used helical ribs,...
08-17-19, 06:04 AM
Replies: 12
Views: 561
Posted By JohnDThompson

If all that is wrong with the Trek is a bad rear...

If all that is wrong with the Trek is a bad rear wheel, the most cost-effective solution is probably a new, hand-built, full spoke count (36 or more spokes) wheel.

Unless you're looking for an...
Forum: Road Cycling
08-16-19, 01:14 PM
Replies: 121
Views: 8,253
Posted By JohnDThompson

Titanium is expensive and requires specialized...

Titanium is expensive and requires specialized skills to work with. Carbon fiber is a much cheaper, lighter, and more versatile material.
08-15-19, 08:13 PM
Replies: 6
Views: 369
Posted By JohnDThompson

I seem to recall that Shimano contracted with...

I seem to recall that Shimano contracted with Tange to make their bottom brackets.

In any case, my experience is that Tange bottom brackets are very similar in quality to Shimano.
08-15-19, 03:30 PM
Replies: 5
Views: 516
Posted By JohnDThompson

I haven't notice that; perhaps it's an iPad...

I haven't notice that; perhaps it's an iPad thing?

What does annoy me is how when I use "Page Up," the Bike Forums banner drops down and covers some of the page text, and when I try to scroll...
08-15-19, 02:32 PM
Replies: 7
Views: 554
Posted By JohnDThompson

If you take care of it (protect it from weather,...

If you take care of it (protect it from weather, judicious application of Proofide), chances are it won't get to a point where you need to replace it. I have several Brooks saddles in use here,...
08-14-19, 08:49 PM
Replies: 5
Views: 279
Posted By JohnDThompson

My concern would be whether the SunTour V-GT...

My concern would be whether the SunTour V-GT derailleur has the same cable-pull expectations an SIS-compatible shift lever expects. The SunTour V-GT pre-dates SIS shifting by many years, so if this...
08-14-19, 01:35 PM
Replies: 21,102
Views: 2,085,226
Posted By JohnDThompson

As long as your bike is in good repair, I...

As long as your bike is in good repair, I wouldn't anticipate problems. I've ridden my Raleigh Superbe on the Lake Pepin 3-Speed Tour several times (about 40 miles from Red Wing to Wabasha, then 40...
08-14-19, 01:08 PM
Replies: 2
Views: 160
Posted By JohnDThompson

Bicycles are component systems and as such...

Bicycles are component systems and as such there's little Giant-specific technical information needed. Park Tools has an extensive collection of on-line bike repair tutorials:
...
08-13-19, 08:41 PM
Replies: 19
Views: 554
Posted By JohnDThompson

Perhaps this can help: ...

Perhaps this can help:

http://www.os2.dhs.org/~john/freewheel-markings.jpg
Source: Sutherland's 4th Edition
08-13-19, 08:26 PM
Replies: 44
Views: 1,610
Posted By JohnDThompson

Sure, but if your frame isn't designed for disc...

Sure, but if your frame isn't designed for disc brakes, this is irrelevant.
08-13-19, 08:20 PM
Replies: 14
Views: 488
Posted By JohnDThompson

No Trek of that era used anything other than a...

No Trek of that era used anything other than a 68mm shell and English thread.



Assuming no previous owner has cold-set the frame otherwise, it should have 126mm OLD spacing.



The seat...
08-13-19, 07:15 AM
Replies: 19
Views: 554
Posted By JohnDThompson

Newer (say, late 70s onward) Campagnolo hubs have...

Newer (say, late 70s onward) Campagnolo hubs have the thread spec explicitly stamped between the threads and the hub flange:

http://www.os2.dhs.org/~john/camp-hub-marking.jpg

Older hubs are...
08-13-19, 06:56 AM
Replies: 23
Views: 536
Posted By JohnDThompson

I'm not aware of a helicoil repair for stripped...

I'm not aware of a helicoil repair for stripped extractor threads, but VAR does make a kit to cut oversize threads into a stripped arm, and an oversize extractor tool for use with the new threads....
08-12-19, 05:20 PM
Replies: 1,339
Views: 108,225
Posted By JohnDThompson

I had a new experience riding tubulars today. I...

I had a new experience riding tubulars today. I had mounted a NOS Vittoria Mondiale tire on the rear wheel earlier this spring and have been riding it since. Went for a ride today, and after climbing...
08-12-19, 05:02 PM
Replies: 11
Views: 266
Posted By JohnDThompson

Looks like a relatively unmodified Simplex...

Looks like a relatively unmodified Simplex dropout — as I suspected, no stop tab filed in the hanger for the B-screw to bear against. I don't see threads in the mounting hole, so I wonder if it was...
Forum: Road Cycling
08-12-19, 11:56 AM
Replies: 14
Views: 613
Posted By JohnDThompson

Using a 3/32" wide chain on a single speed limits...

Using a 3/32" wide chain on a single speed limits you to using only 3/32" drive train components (cogs, chainrings). Using 1/8" wide chain allows you to mix & match 3/32" and 1/8" cogs and chainrings...
08-12-19, 11:26 AM
Replies: 11
Views: 266
Posted By JohnDThompson

Well, it has a SunTour V-GT Luxe currently...

Well, it has a SunTour V-GT Luxe currently mounted, which suggests that the Simplex dropout has been threaded for the mounting bolt. But the weird "angle of the dangle" may mean that the PO didn't...
08-12-19, 11:05 AM
Replies: 10
Views: 420
Posted By JohnDThompson

I use a secondary retention system to prevent the...

I use a secondary retention system to prevent the light from coming off. A stout rubber band around the light, through the bag loop and over the clip does it for me.
08-12-19, 08:13 AM
Replies: 51,819
Views: 6,866,559
Posted By JohnDThompson

Lost the original Gios "coin," and the nickel is...

Lost the original Gios "coin," and the nickel is a good fit to replace it.
08-12-19, 07:43 AM
Replies: 44
Views: 2,979
Posted By JohnDThompson

Not to mention, the conspicuous lack of tire...

Not to mention, the conspicuous lack of tire clearance.
08-10-19, 04:00 PM
Replies: 15
Views: 519
Posted By JohnDThompson

I've managed to acquire grade III...

I've managed to acquire grade III Acromial-Clavicular separations in both my shoulders, a couple years apart. In both cases, the orthopedic surgeon advised that he could either operate or prescribe...
08-10-19, 03:32 PM
Replies: 84
Views: 3,624
Posted By JohnDThompson

Correct. The Delta caliper articulation was...

Correct. The Delta caliper articulation was completely different from the AX:
http://www.os2.dhs.org/~john/delta03-450.JPG
08-10-19, 06:19 AM
Replies: 18
Views: 527
Posted By JohnDThompson

The tube will expand to fill the space available....

The tube will expand to fill the space available. But it will also be stretched thinner than a properly sized tube, and thus arguably more prone to puncture.
08-10-19, 06:08 AM
Replies: 20
Views: 566
Posted By JohnDThompson

Sounds like a chain wrap issue. A longer-arm rear...

Sounds like a chain wrap issue. A longer-arm rear derailleur would likely fix this. Sometimes, all that is needed is a little adjustment of the "B-screw" on the derailleur.
...
08-10-19, 06:03 AM
Replies: 26
Views: 655
Posted By JohnDThompson

The BB drop remains the same regardless of wheel...

The BB drop remains the same regardless of wheel diameter. What changes is the BB height/ground clearance. This amount of this change will be the difference in tire radius. If your bike already has a...
Showing results 1 to 50 of 1000
 


 
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