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Search: Posts Made By: JohnDThompson
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08-20-19, 12:27 PM
Replies: 16
Views: 481
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: 11
Views: 281
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: 11
Views: 298
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: 11
Views: 324
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: 385
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: 1,326
Views: 107,381
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: 425
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: 71
Views: 5,357
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: 358
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: 383
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: 640
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: 591
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: 1,989
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: 640
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: 544
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: 71
Views: 5,357
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: 356
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: 400
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: 532
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: 271
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: 21,090
Views: 2,079,095
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: 157
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: 527
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: 1,505
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: 11
Views: 324
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: 527
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: 527
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: 1,326
Views: 107,381
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: 260
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: 591
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: 260
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: 409
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: 51,775
Views: 6,850,708
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: 2,825
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: 425
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: 3,356
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: 495
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: 557
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: 627
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...
08-09-19, 04:14 PM
Replies: 10
Views: 405
Posted By JohnDThompson

The biggest issue will likely be brakes, unless...

The biggest issue will likely be brakes, unless you have disc brakes. If you have rim brakes, you'll probably need longer reach calipers to allow the brake pads to reach the rim.
08-08-19, 04:42 PM
Replies: 11
Views: 716
Posted By JohnDThompson

It is/was a gathering of steel bike enthusiasts...

It is/was a gathering of steel bike enthusiasts for a ride around Milwaukee. I attended the first one, back in 2009 or so. It seemed more of a pub-crawl than a bike ride, which I guess shouldn't be a...
08-08-19, 06:08 AM
Replies: 13
Views: 523
Posted By JohnDThompson

You have a Stronglight crank on the Talbot....

You have a Stronglight crank on the Talbot. Six-sided wrench flats on the adjustable cup and eight notches on the lockring indicate English thread:

http://www.os2.dhs.org/~john/bb-cup-markings.jpg...
08-07-19, 01:16 PM
Replies: 83
Views: 8,105
Posted By JohnDThompson

The rider. /thread

The rider.

/thread
08-07-19, 06:38 AM
Replies: 11
Views: 435
Posted By JohnDThompson

Bicycles are component systems, with the only...

Bicycles are component systems, with the only thing the bike manufacturer produces is the frame itself. Every thing else is third-party components whose technical specs and service needs will be...
08-07-19, 06:15 AM
Replies: 51
Views: 1,777
Posted By JohnDThompson

Paul was also working at Trek at the time, and I...

Paul was also working at Trek at the time, and I built him a nice track frame:

http://www.os2.dhs.org/~john/paul/track0010.jpeg
08-06-19, 07:54 PM
Replies: 31
Views: 1,310
Posted By JohnDThompson

Don't do it. Either use a smaller tire or take a...

Don't do it. Either use a smaller tire or take a file to the underside of the fork crown to make some clearance:

https://live.staticflickr.com/2884/9525131639_765a3cb381_z.jpg
Forum: Road Cycling
08-06-19, 07:46 PM
Replies: 4
Views: 332
Posted By JohnDThompson

I've had good luck with 27 x 1-1/4" Paselas, and...

I've had good luck with 27 x 1-1/4" Paselas, and they can be had with a puncture resistant belt.

If you want to go wider, there's the SwiftTire "Sand Canyon" 27 x 1-3/8" tire, but I haven't...
Forum: Framebuilders
08-06-19, 07:30 PM
Replies: 9
Views: 680
Posted By JohnDThompson

Just braze another eyelet on them. That's what we...

Just braze another eyelet on them. That's what we did to get double-eyelet Campagnolo dropouts at Trek.

Nova Cycle Supply has eyelets you can use for this:
...
08-06-19, 08:38 AM
Replies: 51
Views: 1,777
Posted By JohnDThompson

An '84 Trek 760 should handle 28mm wide tires no...

An '84 Trek 760 should handle 28mm wide tires no problem, maybe even 32mm.

What is the seat lug on the OP's bike? If it has the seat stays attached to the sides of the lug, 32mm should be fine....
Forum: Road Cycling
08-06-19, 07:04 AM
Replies: 16
Views: 864
Posted By JohnDThompson

I've only seen them in 700C diameter, but...

I've only seen them in 700C diameter, but Velobase suggests they may have been available in 650C (571mm bead seat diameter) as well:

VeloBase.com - Component: Michelin Hi-Lite Comp...
Showing results 1 to 50 of 1000
 


 
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