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Search: Posts Made By: JohnDThompson
Showing results 1 to 50 of 1000
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Forum: Framebuilders
09-18-24, 05:10 PM
Replies: 10
Views: 245
Posted By JohnDThompson

The Trek socketed dropouts were designed by Tim...

The Trek socketed dropouts were designed by Tim Isaac and made by Signicast, in Milwaukee.
Forum: Framebuilders
09-18-24, 05:09 PM
Replies: 10
Views: 245
Posted By JohnDThompson

And the short slot combines the disadvantages of...

And the short slot combines the disadvantages of a front-facing, horizontal dropout with none of the advantages of a vertical dropout.
Forum: Classic & Vintage
09-18-24, 05:01 PM
Replies: 16
Views: 483
Posted By JohnDThompson

It should be 126mm

It should be 126mm
Forum: Classic & Vintage
09-18-24, 04:58 PM
Replies: 22,510
Views: 4,961,359
Posted By JohnDThompson

Must be for a young orangutan.

Must be for a young orangutan.
Forum: Classic & Vintage
09-18-24, 04:53 PM
Replies: 1,116
Views: 248,099
Posted By JohnDThompson

Looks like a rebadged Sakae "Litage"

Looks like a rebadged Sakae "Litage"
Forum: Classic and Vintage Sales
09-18-24, 12:17 PM
Replies: 4
Views: 147
Posted By JohnDThompson

The corncob cluster is somewhat intimidating, but...

The corncob cluster is somewhat intimidating, but modern Hyperglide sprockets can be modified to fit onto a Uniglide freehub (except for the smallest sprocket, which doubles as the lockring to hold...
Forum: Bicycle Mechanics
09-18-24, 12:07 PM
Replies: 27
Views: 529
Posted By JohnDThompson

For aircraft applications, Nylock fasteners are...

For aircraft applications, Nylock fasteners are considered to be single-use items.
Just sayin'…
Forum: Bicycle Mechanics
09-18-24, 12:05 PM
Replies: 17
Views: 261
Posted By JohnDThompson

Saddle rails and cleats are also possible sources.

Saddle rails and cleats are also possible sources.
Forum: General Cycling Discussion
09-18-24, 11:59 AM
Replies: 31
Views: 530
Posted By JohnDThompson

In the fifty-some years I've been riding, I've...

In the fifty-some years I've been riding, I've only had it happen twice.
Forum: Framebuilders
09-16-24, 09:16 AM
Replies: 16
Views: 4,862
Posted By JohnDThompson

LibreCAD...

LibreCAD (https://github.com/LibreCAD/LibreCAD/releases) is available as a distribution-agnostic appimage.
Forum: Classic & Vintage
09-16-24, 08:47 AM
Replies: 28,390
Views: 4,886,301
Posted By JohnDThompson

Maybe this can help: ...

Maybe this can help:
https://minisystem.blogspot.com/2012/04/sturmey-archer-light-set-led-upgrade.html
Forum: General Cycling Discussion
09-16-24, 08:27 AM
Replies: 25
Views: 568
Posted By JohnDThompson

Sure, but that wasn't the question. :innocent:

Sure, but that wasn't the question. :innocent:
Forum: Classic and Vintage Sales
09-16-24, 08:23 AM
Replies: 7
Views: 358
Posted By JohnDThompson

Ball cup remover for Shimano 3-speed hub.

Ball cup remover for Shimano 3-speed hub.
Forum: General Cycling Discussion
09-16-24, 05:23 AM
Replies: 25
Views: 568
Posted By JohnDThompson

Replace your indexed shifter with a friction...

Replace your indexed shifter with a friction shifter. You will then be able to shift as many or as few gears as you like.
Forum: Bicycle Mechanics
09-14-24, 12:17 PM
Replies: 30
Views: 1,207
Posted By JohnDThompson

That's a clever idea. A helical blade reamer...

That's a clever idea. A helical blade reamer wouldn't need that, but would be expensive for a one-off job.
Forum: Singlespeed & Fixed Gear
09-14-24, 12:08 PM
Replies: 1,026
Views: 319,161
Posted By JohnDThompson

I've had an S3X on one of my bikes for many years...

I've had an S3X on one of my bikes for many years now; even did a couple century rides on it. It's a nice hub. but rather odd gear ratios IMO: 0.625/0.75/1.0
It uses two sets of three planet gears...
Forum: Road Cycling
09-14-24, 11:59 AM
Replies: 45
Views: 1,429
Posted By JohnDThompson

https://cimg4.ibsrv.net/gimg/bikeforums.net-vbulle...

https://cimg4.ibsrv.net/gimg/bikeforums.net-vbulletin/836x1024/humpty_dumpty_4ce1efe82b8f95e47cb766db75616b5226d579ef.gif
Forum: Classic & Vintage
09-14-24, 11:47 AM
Replies: 1,885
Views: 273,553
Posted By JohnDThompson

Real horrorshow.

Real horrorshow.
Forum: General Cycling Discussion
09-14-24, 10:17 AM
Replies: 122
Views: 3,658
Posted By JohnDThompson

Been there, done that. I tore the entire shoe...

Been there, done that. I tore the entire shoe upper off the sole in a sprint, once (Look clipless). FWIW, I use Look clipless, slotted cleats & toeclips/straps, and flat pedals on various bikes.
Forum: Bicycle Mechanics
09-11-24, 06:08 AM
Replies: 24
Views: 573
Posted By JohnDThompson

BikeToolsEtc offers a Tange 3/16" x 18 ball...

BikeToolsEtc offers a Tange 3/16" x 18 ball retainer that ought to work:
https://biketoolsetc.com/index.cgi?id=76973410960&d=single&c=Bearings&sc=Retainer&tc=Headset&item_id=TA-501

N.B. the...
Forum: Bicycle Mechanics
09-11-24, 05:51 AM
Replies: 12
Views: 390
Posted By JohnDThompson

Velo-Orange offers a French-thread bottom bracket...

Velo-Orange offers a French-thread bottom bracket cartridge:
https://velo-orange.com/collections/bottom-brackets/products/grand-cru-bottom-brackets-hollow-axle-alloy-cups-1

Another option is...
Forum: Bicycle Mechanics
09-05-24, 06:34 PM
Replies: 30
Views: 1,207
Posted By JohnDThompson

If you like the look of a traditional quill stem,...

If you like the look of a traditional quill stem, the Nitto Technomic is your best bet. They're available in 50mm-100mm extensions, with a 280mm post length. The bar clamp is available in either...
Forum: General Cycling Discussion
09-05-24, 06:04 PM
Replies: 41
Views: 1,483
Posted By JohnDThompson

I'm not worried. I still use slotted cleats even...

I'm not worried. I still use slotted cleats even forty years after Look introduced their clipless pedals.
Forum: Classic & Vintage
09-05-24, 06:36 AM
Replies: 29
Views: 875
Posted By JohnDThompson

Stronglight used the same spindle regardless of...

Stronglight used the same spindle regardless of shell width. Cup thickness was used to make up the difference....
Forum: Classic & Vintage
09-03-24, 10:29 AM
Replies: 8
Views: 397
Posted By JohnDThompson

The Svelto ain't much to look at, but it performs...

The Svelto ain't much to look at, but it performs surprisingly well. Andy Muzi of Yellow Jersey fame was fond of them....
Forum: Classic and Vintage Sales
09-03-24, 10:20 AM
Replies: 2
Views: 260
Posted By JohnDThompson

Some Raleigh steer tubes (mostly on 3-speeds, but...

Some Raleigh steer tubes (mostly on 3-speeds, but I've also seen them on some Gran Prix bikes) are 1" x 26tpi instead of the more common 1" x 24tpi. You can test this by threading them onto a steer...
Forum: Bicycle Mechanics
09-03-24, 10:09 AM
Replies: 13
Views: 645
Posted By JohnDThompson

It ought to work as long as the thread matches....

It ought to work as long as the thread matches. Brake barrel adjusters are typically 6mm x 1mm; derailleur/shift barrel adjusters 5mm x 0.8mm
Forum: Bicycle Mechanics
09-03-24, 10:04 AM
Replies: 21
Views: 792
Posted By JohnDThompson

The top cap is only used to set preload. Once the...

The top cap is only used to set preload. Once the preload is set, it only serves to close the end of the steer tube. And you can set the preload without a top cap, but it's trickier.
Forum: General Cycling Discussion
09-03-24, 07:07 AM
Replies: 12
Views: 738
Posted By JohnDThompson

Soapy water on the affected area can lubricate...

Soapy water on the affected area can lubricate things enough for the tire bead to move into its proper place, then evaporates with no ill effects.
Forum: Classic & Vintage
09-02-24, 11:03 AM
Replies: 20
Views: 953
Posted By JohnDThompson

The easiest fix would be to do as @bulgie...

The easiest fix would be to do as @bulgie suggests and use a bearing retaining compound to secure the race. Next up would be knurling the race seat (with a special tool, such as offered by J.A....
Forum: Classic & Vintage
09-01-24, 06:44 AM
Replies: 12
Views: 654
Posted By JohnDThompson

Correct. It's not a freewheel, it's a Uniglide...

Correct. It's not a freewheel, it's a Uniglide freehub, where the smallest sprocket is threaded onto the freehub to secure all the larger sprockets. You need two chain whips to remove the sprocket...
Forum: Classic & Vintage
08-31-24, 04:53 PM
Replies: 7
Views: 298
Posted By JohnDThompson

What is the dropout? By the early 80s, most had...

What is the dropout? By the early 80s, most had adopted 10mm x 1mm thread, except Campagnolo, which is 10mm x 26tpi; very close to 1mm pitch, but just different enough to make you work hard...
Forum: General Cycling Discussion
08-31-24, 03:11 PM
Replies: 32
Views: 1,575
Posted By JohnDThompson

You can cut the housing with the cable still...

You can cut the housing with the cable still installed with a decent set of cable cutters; that actually is one way of preventing an obstructing burr from forming as a result of the cut. The problem...
Forum: Classic & Vintage
08-31-24, 03:00 PM
Replies: 310
Views: 20,763
Posted By JohnDThompson

Yes, and Euskaltel is the Basque telephone...

Yes, and Euskaltel is the Basque telephone company, who sponsored the professional cycling team team.
Forum: Classic & Vintage
08-30-24, 11:16 AM
Replies: 9
Views: 417
Posted By JohnDThompson

Unless you feel that you need a 50T ring, you...

Unless you feel that you need a 50T ring, you could instead use a smaller tooth count on the large ring. I put a 48-36 Zeus crank on one of my bikes (the 53-42 Super Record got to be too much for my...
Forum: Bicycle Mechanics
08-30-24, 10:59 AM
Replies: 20
Views: 585
Posted By JohnDThompson

I put Velo-Orange 700C fenders on my 27" wheel...

I put Velo-Orange 700C fenders on my 27" wheel Trek 720. Clearance was a little tight, but it worked:...
Forum: Bicycle Mechanics
08-29-24, 09:17 PM
Replies: 10
Views: 446
Posted By JohnDThompson

BikeToolsEtc (https://biketoolsetc.com) has been...

BikeToolsEtc (https://biketoolsetc.com) has been pretty useful for me.
Forum: Classic & Vintage
08-29-24, 10:45 AM
Replies: 6
Views: 352
Posted By JohnDThompson

I don't think so. Sutherlands indicates that...

I don't think so. Sutherlands indicates that replacing a Sampson 108mm bottom bracket with a Shimano UN51 115mm bottom bracket will only move the crank out by about 3mm. A 118mm UN51 will move it out...
Forum: Classic & Vintage
08-29-24, 07:04 AM
Replies: 44
Views: 1,824
Posted By JohnDThompson

I won't agree that it will shift "poorly;"...

I won't agree that it will shift "poorly;" rather, that the shifting will be consistently and predictably mediocre "pretty much forever," at least compared to modern derailleurs.
Forum: Classic & Vintage
08-28-24, 06:22 AM
Replies: 10
Views: 398
Posted By JohnDThompson

It's for this type of Simplex shift lever: ...

It's for this type of Simplex shift lever:
https://cimg4.ibsrv.net/gimg/bikeforums.net-vbulletin/470x644/simplex_left_lever_2e2e1c43971f81104b860b89ffdb1fdcf3a1e5e5.jpg
A standard Prestige lever...
Forum: Framebuilders
08-27-24, 08:41 PM
Replies: 6
Views: 445
Posted By JohnDThompson

Replacing the fork with one designed to handle...

Replacing the fork with one designed to handle disc brake loads is the safest option. You can gusset the rear triangle to handle a disc brake, as the rear brake handles far less of the braking load...
Forum: Pills and Ills
08-27-24, 08:30 PM
Replies: 20
Views: 660
Posted By JohnDThompson

An electrophysiology specialist may be an...

An electrophysiology specialist may be an appropriate referral. They can map out conduction through the cardiac muscle and suggest interventions that may improve overall cardiac output.
Forum: Classic & Vintage
08-27-24, 07:31 AM
Replies: 6,740
Views: 905,718
Posted By JohnDThompson

I don't have a spindle for you, but if the...

I don't have a spindle for you, but if the pitting only extends part way around the bearing track, that suggests that the bottom bracket shell may need to be faced. Check that before installing a...
Forum: Bicycle Mechanics
08-27-24, 07:19 AM
Replies: 15
Views: 614
Posted By JohnDThompson

You can upload pictures to an "album" associated...

You can upload pictures to an "album" associated with your user account, to which other people here can post links to the pictures.
Forum: Bicycle Mechanics
08-27-24, 07:17 AM
Replies: 11
Views: 418
Posted By JohnDThompson

It depends on where, exactly, the problem lies....

It depends on where, exactly, the problem lies. If the pawls fail to engage, you'll end up pushing the bike home. If the bearings and races are worn out, you could ride for years, just with more...
Forum: General Cycling Discussion
08-27-24, 07:06 AM
Replies: 59
Views: 2,581
Posted By JohnDThompson

I use a glasses-mounted mirror because I have...

I use a glasses-mounted mirror because I have arthritis in my neck, and it hurts to turn my head far enough to see behind me. With the mirror, I can scan the whole area behind me (no blind spots!) by...
Forum: Classic & Vintage
08-26-24, 08:30 PM
Replies: 7
Views: 447
Posted By JohnDThompson

Yes, just as 3/32" rings will work with 1/8"...

Yes, just as 3/32" rings will work with 1/8" (track) chains.
Forum: Bicycle Mechanics
08-26-24, 08:05 PM
Replies: 8
Views: 383
Posted By JohnDThompson

The Trek-designed extrusions were sourced from a...

The Trek-designed extrusions were sourced from a place in Rockford Illinois (sorry, I can't remember the name), which were rolled into rims, pinned and drilled at Trek's facility in the old red barn...
Forum: Fifty Plus (50+)
08-26-24, 07:41 PM
Replies: 27
Views: 2,251
Posted By JohnDThompson

I've been using "Stur" electrolyte powder,...

I've been using "Stur" electrolyte powder, lemon-lime flavored, mostly because it was on sale at the grocery store.
Forum: Classic & Vintage
08-25-24, 02:29 PM
Replies: 7
Views: 447
Posted By JohnDThompson

We (Trek) did hardness testing on various...

We (Trek) did hardness testing on various chainrings back in the 80s. Stronglight and Campagnolo had the hardest rings, and presumably the longest-wearing, Shimano, Sugino, and Sakae Ringyo were all...
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