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Search: Posts Made By: JohnDThompson
Showing results 1 to 50 of 1000
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12-01-22, 08:25 AM
Replies: 11
Views: 256
Posted By JohnDThompson

Yes, they do.

Yes, they do.
12-01-22, 08:10 AM
Replies: 30
Views: 513
Posted By JohnDThompson

There's nothing new under the sun… ...

There's nothing new under the sun…
http://oldbike.files.wordpress.com/2008/08/1932raleigh6.jpg?w=445&h=636&h=636
https://onlinebicyclemuseum.co.uk/1935-raleigh-x-frame/
12-01-22, 08:00 AM
Replies: 8
Views: 156
Posted By JohnDThompson

As an RN who has worked in Orthopedics, that...

As an RN who has worked in Orthopedics, that matches my experience with joint replacement recovery.
11-30-22, 08:15 AM
Replies: 5
Views: 166
Posted By JohnDThompson

Super Champion? ...

Super Champion?
https://velobase.com/CompImages/Rims/605D5F17-E686-4C05-A6DE-5F9CBACF89C6.jpeg
11-29-22, 09:55 PM
Replies: 11
Views: 256
Posted By JohnDThompson

The "Z" is a production code, of no relevance in...

The "Z" is a production code, of no relevance in selecting the proper spindle.
https://drive.google.com/file/d/1TZwy9IlzsgHu0KMuuNBA3hy9UXjLIi_a/view?usp=share_link
Forum: Road Cycling
11-26-22, 04:40 PM
Replies: 33
Views: 783
Posted By JohnDThompson

Yeah, baby! I'm sure that's what's been holding...

Yeah, baby!
I'm sure that's what's been holding me back! :innocent:
11-26-22, 10:36 AM
Replies: 20
Views: 688
Posted By JohnDThompson

When (not "if") this happens, remove the valve...

When (not "if") this happens, remove the valve core from the stem and soak it in a household ammonia solution. This will dissolve the latex in the slime and allow you to brush or blow off any residue...
11-26-22, 09:06 AM
Replies: 8
Views: 233
Posted By JohnDThompson

The Jubilee front was initially spec'ed for the...

The Jubilee front was initially spec'ed for the Trek 720 loaded touring bike, with a triple crank. It works fine with that, but Trek eventually chaged the spec to a Huret Success front or Simplex...
11-26-22, 08:57 AM
Replies: 21
Views: 486
Posted By JohnDThompson

Also check derailleur hanger alignment.

Also check derailleur hanger alignment.
11-26-22, 08:23 AM
Replies: 64
Views: 1,266
Posted By JohnDThompson

The end nuts on quick release skewers have nylon...

The end nuts on quick release skewers have nylon inserts (aka "Nyloc") to prevent such loosening. This type of fastener is used on bolts where loosening could have catastrophic consequences, e.g....
11-25-22, 07:32 AM
Replies: 18
Views: 290
Posted By JohnDThompson

I've always used a TA #344 spindle for a TA...

I've always used a TA #344 spindle for a TA double. Those measure 114.5mm. The TA catalog also suggests a #373, 118mm spindle for a double, but I don't think I've seen one of those. The #374 spindle...
11-24-22, 11:35 AM
Replies: 64
Views: 1,266
Posted By JohnDThompson

Schwinn's front wheel retention clip is arguably...

Schwinn's front wheel retention clip is arguably the best of these devices:
https://patentimages.storage.googleapis.com/80/6d/f2/ddd880823e6a38/US4103922-drawings-page-2.png...
11-23-22, 06:37 PM
Replies: 59
Views: 1,123
Posted By JohnDThompson

No. All else equal, you might save a few grams...

No. All else equal, you might save a few grams and get a fancier tubing sticker, but that's about it.
11-23-22, 06:24 PM
Replies: 23
Views: 535
Posted By JohnDThompson

I agree with the penetrating oil suggestion....

I agree with the penetrating oil suggestion. Also, try some heat, from a hair drier or heat gun. It can help the oil penetrate more easily, and the aluminum arm will expand faster than the steel...
11-22-22, 06:49 AM
Replies: 10
Views: 312
Posted By JohnDThompson

That's true, but unloaded "stiffness," whether...

That's true, but unloaded "stiffness," whether from excess grease, tight pre-load adjustment, or seal drag is trivial to the point of insignificance when the bearing is loaded in use.
11-22-22, 06:36 AM
Replies: 24
Views: 367
Posted By JohnDThompson

I'm not a fan of permanent, aka "braze-on," front...

I'm not a fan of permanent, aka "braze-on," front derailleur mounts, either, but there are situations where they are needed, e.g. non-round tubing for which a clamp mount cannot work. In situations...
Forum: Road Cycling
11-21-22, 09:27 PM
Replies: 59
Views: 1,718
Posted By JohnDThompson

I don't race, so that's not a concern for me....

I don't race, so that's not a concern for me. Brifters are needlessly complex and too expensive to replace for the riding I do.
11-21-22, 08:10 AM
Replies: 24
Views: 367
Posted By JohnDThompson

If the problem is that the derailleur mount is...

If the problem is that the derailleur mount is too high for your preferred chainring, perhaps something like this might work:

https://wickwerks.com/wp-content/uploads/2016/03/Adapter_Mech_Side.jpg...
11-20-22, 05:40 PM
Replies: 26
Views: 789
Posted By JohnDThompson

It's fretting damage due to lubrication failure....

It's fretting damage due to lubrication failure. Unlike hubs, pedals, bottom brackets, etc., headset are not in constant rotation when in use. Stationary balls under load will displace the...
11-19-22, 11:00 AM
Replies: 4
Views: 226
Posted By JohnDThompson

The unmodified Campagnolo #704 tool fits...

The unmodified Campagnolo #704 tool fits Regina-style two-slot freewheels with five or fewer sprockets. The #704/1 "reducing insert" is required for Regina-style two-slot freewheels with six or more...
11-19-22, 10:18 AM
Replies: 20
Views: 572
Posted By JohnDThompson

Are you certain that the non-anodized one isn't...

Are you certain that the non-anodized one isn't Gran Sport? Later production Gran Sport peals used non-anodized aluminum cages. If the axle shaft isn't rifled, it's Gran Sport....
11-19-22, 10:01 AM
Replies: 20
Views: 572
Posted By JohnDThompson

No, Record pedals have a chromed steel cage,...

No, Record pedals have a chromed steel cage, while the Superleggero pedals have a black anodized aluminum cage.
11-19-22, 09:40 AM
Replies: 27
Views: 509
Posted By JohnDThompson

There's really no downside to using a longer-cage...

There's really no downside to using a longer-cage derailleur than necessary, other than a few grams of extra mass. When in doubt, go with the longer cage.
11-19-22, 09:34 AM
Replies: 39
Views: 780
Posted By JohnDThompson

With the unicorns and Sasquatch.

With the unicorns and Sasquatch.
11-19-22, 09:32 AM
Replies: 10
Views: 333
Posted By JohnDThompson

You'll have energy loss from both the generator...

You'll have energy loss from both the generator and the motor; a chain drive would be more efficient.
11-19-22, 09:06 AM
Replies: 29
Views: 629
Posted By JohnDThompson

I find a fair number of tools. All my Snap-On...

I find a fair number of tools. All my Snap-On tools (ok, not that many) are road finds: including sockets, Allen wrenches, needle-nose pliers, combo wrenches. My Snap-On 7mm Allen was a road find;...
11-18-22, 12:31 PM
Replies: 12
Views: 281
Posted By JohnDThompson

It helps to start with a decent quality socket,...

It helps to start with a decent quality socket, i.e. Snap-On, Proto, Mac, USA Craftsman, etc. Cheap sockets are made from lower grade steel; that's why they have thicker walls. A USA Craftsman 15mm...
11-18-22, 12:21 PM
Replies: 5,406
Views: 570,543
Posted By JohnDThompson

Gran Sport pedal axles, cones, and locknuts will...

Gran Sport pedal axles, cones, and locknuts will interchange with Record and Superleggero. The biggest difference is that the Record and Superleggero axles are rifled to help prevent contamination,...
11-18-22, 07:04 AM
Replies: 12
Views: 281
Posted By JohnDThompson

By the time the Stronglight mod. 105 came out in...

By the time the Stronglight mod. 105 came out in the early 80s, Stronglight had switched to 14mm mounting bolts and 22mm extractor thread. The previous owner must have decided to unload the old 16mm...
11-18-22, 06:47 AM
Replies: 20
Views: 572
Posted By JohnDThompson

1037/A "Superleggero" pedals. ...

1037/A "Superleggero" pedals.
https://cimg8.ibsrv.net/gimg/bikeforums.net-vbulletin/507x598/1037a_d620b870b8f2deca755e745bd79a3f5c5572b86a.jpg
11-18-22, 06:24 AM
Replies: 158
Views: 3,374
Posted By JohnDThompson

I write as a mechanic who has to service what the...

I write as a mechanic who has to service what the customer brings in.
11-17-22, 05:01 PM
Replies: 158
Views: 3,374
Posted By JohnDThompson

Shimano made a V-brake with a plastic shroud...

Shimano made a V-brake with a plastic shroud covering the spring. When (not if) the shroud cracks, the spring is only sloppily secured and centering the brake becomes impossible. :notamused:
11-17-22, 09:57 AM
Replies: 28
Views: 600
Posted By JohnDThompson

I haven't tried peoplesocks, but I agree with...

I haven't tried peoplesocks, but I agree with your assessment of Smartwool. Out of all the brands I've tried (REI, Darn Tough, Wright Sock), Smartwool seems the least durable.
11-16-22, 04:22 PM
Replies: 5,406
Views: 570,543
Posted By JohnDThompson

The axle locknut thread is a somewhat unusual 7mm...

The axle locknut thread is a somewhat unusual 7mm x 0.75mm thread; maybe source from a place like McMaster-Carr? Otherwise, other pedal hardware e.g. Campagnolo Gran Sport, Gipiemme Dual-Sprint,...
11-16-22, 03:34 PM
Replies: 18
Views: 375
Posted By JohnDThompson

I'd be reluctant to drill holes for set screws --...

I'd be reluctant to drill holes for set screws -- those would create stress risers that could lead to post failure :cry:

If you can separate the parts, you could clean them off and re-bond them...
11-16-22, 12:11 PM
Replies: 10
Views: 340
Posted By JohnDThompson

The rim is patterned after the Weinmann Alesa...

The rim is patterned after the Weinmann Alesa rim. The raised center section is cosmetic, the domed eyelets allow the nipple to seat in-axis with the spoke....
11-16-22, 12:05 PM
Replies: 12
Views: 344
Posted By JohnDThompson

I would just get them from Ceeway in Britain. The...

I would just get them from Ceeway in Britain. The dollar is really strong against the pound, so if there's ever a time to buy from overseas, it's now.
11-16-22, 11:55 AM
Replies: 12
Views: 271
Posted By JohnDThompson

The nice thing about taking them to a cobbler is...

The nice thing about taking them to a cobbler is that the cobbler is likely to have the cast-iron shoe lasts they can put inside the shoe. When the nail hits the last, the end bends back to form a...
11-16-22, 11:47 AM
Replies: 13
Views: 332
Posted By JohnDThompson

"FORCELLA ORIGINALE" refers to Columbus' oval...

"FORCELLA ORIGINALE" refers to Columbus' oval blade profile and fork blade butting.



I agree with T-Mar that it is a "riverniciato" or "repaint" decal. It does seem odd on a chrome fork,...
11-16-22, 11:13 AM
Replies: 43
Views: 919
Posted By JohnDThompson

In a similar vein, I wear my usual bifocals under...

In a similar vein, I wear my usual bifocals under Lenscover sunglasses. I prefer that to clip-ons (which I've also used) because the Lenscovers block wind from coming around the side of the glasses....
11-13-22, 05:28 PM
Replies: 21
Views: 501
Posted By JohnDThompson

Sturmey-Archer has made a number of internally...

Sturmey-Archer has made a number of internally geared fixed gear hubs, most recently the S3X. I believe that they're all out-of-production now. I've had an S3X three speed fixed gear hub on a bike...
Forum: Road Cycling
11-13-22, 05:18 PM
Replies: 59
Views: 1,718
Posted By JohnDThompson

There's nothing inherent in down tube shifters...

There's nothing inherent in down tube shifters that prevents you from having a wide range of gears....
11-13-22, 08:04 AM
Replies: 43
Views: 1,739
Posted By JohnDThompson

That was my first thought as well! ...

That was my first thought as well!
https://cimg7.ibsrv.net/gimg/bikeforums.net-vbulletin/952x1493/acronyms_bdf8d036daecd733e85ffd4ecbafd5797c0f96a1.jpg
11-13-22, 07:54 AM
Replies: 2
Views: 163
Posted By JohnDThompson

Yes, the top picture is an early UniGlide...

Yes, the top picture is an early UniGlide cassette, not a freewheel. The bottom picture is a freewheel, and the Shimano TL-FW10 or Bicycle Research CT-1 are the preferred tools to remove the...
11-13-22, 07:39 AM
Replies: 14
Views: 280
Posted By JohnDThompson

Yes, but seating the FR-4 will likely require...

Yes, but seating the FR-4 will likely require removing the locknut from the axle. A Phil or Zeus tool is thin enough to fit over the locknut....
11-11-22, 01:23 PM
11-11-22, 01:20 PM
Replies: 43
Views: 1,739
Posted By JohnDThompson

That was my impression of the Klein road bike. We...

That was my impression of the Klein road bike. We (Trek) invited Gary Klein to the Waterloo factory to test ride one of the then-new bonded aluminum frames to demonstrate that it didn't violate his...
11-11-22, 01:06 PM
Replies: 3
Views: 145
Posted By JohnDThompson

Are you certain that you need a spindle for a...

Are you certain that you need a spindle for a 70mm shell for this? Stronglight used the same spindle for both 68 and 70mm shells, and used a thicker cup on 68mm shells to make up the difference. That...
11-11-22, 12:56 PM
Replies: 18
Views: 590
Posted By JohnDThompson

I have one of the 3rd generation Rallys, and it...

I have one of the 3rd generation Rallys, and it does have a slant parallelogram:...
11-11-22, 12:31 PM
Replies: 18
Views: 590
Posted By JohnDThompson

The first generation Rally does not have a...

The first generation Rally does not have a slant-parallelogram that would violate SunTour's patent; it has a dropped parallelogram like the Shimano Crane and Titlist. It also shares a sprung upper...
Showing results 1 to 50 of 1000
 


 
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