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Search: Posts Made By: JohnDThompson
Showing results 1 to 50 of 1000
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03-18-24, 09:33 AM
Replies: 28
Views: 483
Posted By JohnDThompson

Beg to differ. My phone/GPS stays in my jersey...

Beg to differ. My phone/GPS stays in my jersey pocket out of sight until I need it, e.g. unexpected road construction to detour around, etc.


Very handy on the MUP.


I aggressively filter all...
03-18-24, 07:51 AM
Replies: 28
Views: 483
Posted By JohnDThompson

My most complicated "cockpit." Thank goodness the...

My most complicated "cockpit." Thank goodness the bell is clearly labeled to avoid any confusion:...
03-16-24, 08:17 PM
Replies: 14
Views: 325
Posted By JohnDThompson

I did most of those for the 750/950 series frames.

I did most of those for the 750/950 series frames.
03-16-24, 08:02 PM
Replies: 20
Views: 388
Posted By JohnDThompson

Still using my Kingsbridge gauge from the 70s: ...

Still using my Kingsbridge gauge from the 70s:
https://cimg1.ibsrv.net/gimg/bikeforums.net-vbulletin/604x427/kingsbridge_gauge_51f3aaca5bb4e578f5ead55be8180b64fac998d2.jpg
03-15-24, 07:43 PM
Replies: 16
Views: 430
Posted By JohnDThompson

I just built up some brass on the Huret dropout...

I just built up some brass on the Huret dropout and filed a stop for a Campagnolo-type derailler:...
03-15-24, 11:07 AM
Replies: 16
Views: 430
Posted By JohnDThompson

The Schwinn-modified Huret dropout doesn't play...

The Schwinn-modified Huret dropout doesn't play well with derailleurs designed for Campagnolo-type dropouts. Besides the Crane GS and its Schwinn-approved "Le Tour" version, a 1st generation...
03-13-24, 03:29 PM
Replies: 11
Views: 244
Posted By JohnDThompson

Likely. Take it to a bike shop, where it can be...

Likely. Take it to a bike shop, where it can be assessed in person.


Spam mitigation rule. You can upload pictures to an "Album" associated with your user account, and other people can link to...
03-13-24, 07:25 AM
Replies: 20
Views: 324
Posted By JohnDThompson

Retapping to Italian does not weaken the threads;...

Retapping to Italian does not weaken the threads; in fact, you need to ream the shell before tapping, which completely removes the old threads. The taps will cut full-depth Italian threads.
03-13-24, 07:19 AM
Replies: 20
Views: 324
Posted By JohnDThompson

[/b][/u] It looks to be a high-end bike;...

[/b][/u]
It looks to be a high-end bike; perhaps you can justify splurging on a Phil Wood bottom bracket?


The Campagnolo triple spindle was 122mm long, so that's what I'd suggest. Phil bottom...
03-13-24, 06:59 AM
Replies: 16
Views: 309
Posted By JohnDThompson

Grease is not ideal for lubricating freewheels,...

Grease is not ideal for lubricating freewheels, especially in cold climates. The viscosity of grease can prevent the pawls from seating fully (or at all), resulting in freewheeling in both...
03-12-24, 07:03 PM
Replies: 19
Views: 666
Posted By JohnDThompson

English thread Zeus crank arms were marked BSC on...

English thread Zeus crank arms were marked BSC on the back of the arms:
https://cimg0.ibsrv.net/gimg/bikeforums.net-vbulletin/1091x732/zeus_bsc_crank_11bf228b87e8b96afebf2cf687124aa60888fa56.jpg...
03-12-24, 06:48 PM
Replies: 24
Views: 1,881
Posted By JohnDThompson

The springs look more like a B-72 saddle. Not...

The springs look more like a B-72 saddle. Not that that's a problem.
https://cimg9.ibsrv.net/gimg/bikeforums.net-vbulletin/1241x648/b72_3_22905f35cd380fc09c40dff60a963b63a726d709.jpg
03-12-24, 06:06 PM
Replies: 22
Views: 3,632
Posted By JohnDThompson

Campagnolo bottom brackets can be … complicated....

Campagnolo bottom brackets can be … complicated. This document may help, and gives the offset and shoulder spacing measurements Mark asked about, above. It was printed before the C-Record era,...
03-11-24, 11:21 AM
Replies: 19
Views: 666
Posted By JohnDThompson

I can't tell if they're self-extracting bolts, or...

I can't tell if they're self-extracting bolts, or just Allen head bolts with integral dust caps, like these:...
03-11-24, 10:50 AM
Replies: 204
Views: 4,875
Posted By JohnDThompson

Their race; their rules.

Their race; their rules.
03-10-24, 09:36 AM
Replies: 21,619
Views: 3,018,028
Posted By JohnDThompson

We have similar art. Neenah Foundry, one of the...

We have similar art. Neenah Foundry, one of the largest manufacturers of manhole covers, is a local company:...
03-09-24, 02:30 PM
Replies: 11
Views: 260
Posted By JohnDThompson

Aelle was straight-gauge carbon-manganese tubing,...

Aelle was straight-gauge carbon-manganese tubing, just above Zeta in the product range:...
03-07-24, 08:42 AM
Replies: 3,221
Views: 407,559
Posted By JohnDThompson

Here's one option: ...

Here's one option:
https://m.media-amazon.com/images/I/61uiACY7ACL._SL1500_.jpg
https://www.amazon.com/Liquid-Latex-Professional-Special-Translucent/dp/B01MYNF067/ref=sr_1_18?sr=8-18
03-06-24, 07:36 AM
Replies: 16
Views: 262
Posted By JohnDThompson

+1 @79pmooney...

+1 @79pmooney (https://www.bikeforums.net/members/79pmooney-392125.html); take them to a cobbler. They can do it right. E.g.:...
03-05-24, 11:54 AM
Replies: 16
Views: 864
Posted By JohnDThompson

It's for holding the pawls when you assemble the...

It's for holding the pawls when you assemble the body.
https://cimg1.ibsrv.net/gimg/bikeforums.net-vbulletin/918x645/campy_fw_pawl_tool_64be47bcd26f3316907f19fdd7ea070e235020a9.jpg
03-05-24, 11:37 AM
Replies: 6
Views: 209
Posted By JohnDThompson

Zeus cranks were 120mm BCD with a 36T minimum...

Zeus cranks were 120mm BCD with a 36T minimum tooth count, but those rings are scarce as hen's teeth these days.
03-05-24, 11:34 AM
Replies: 9
Views: 301
Posted By JohnDThompson

Paint some liquid latex onto the sidewalls to...

Paint some liquid latex onto the sidewalls to restore and protect them. :thumb:
03-05-24, 11:26 AM
Replies: 12
Views: 281
Posted By JohnDThompson

If the cable anchor and barrel adjuster are...

If the cable anchor and barrel adjuster are bolted to the caliper arms (as opposed to riveted), you can often just swap the positions to get what you want. That's what I did on my daughter's bike....
03-04-24, 01:57 PM
Replies: 25
Views: 671
Posted By JohnDThompson

And in any case, it's fairly trivial to convert a...

And in any case, it's fairly trivial to convert a JIS crown race seat and head tube to fit ISO-spec headset parts.
Forum: Road Cycling
03-04-24, 01:47 PM
Replies: 65
Views: 2,099
Posted By JohnDThompson

A 1972 Raleigh Superbe 3-speed is my city bike. I...

A 1972 Raleigh Superbe 3-speed is my city bike. I have a 1975 Viscount frankenbike fixed gear, a couple 1979 custom frame bikes, and a 1981 Trek 720 loaded tourer. All of them get ridden.
Forum: Road Cycling
03-04-24, 01:43 PM
Replies: 36
Views: 1,031
Posted By JohnDThompson

At 69 years old, I have fairly severe arthritis...

At 69 years old, I have fairly severe arthritis in my hands, shoulders, neck, and back. If I don't premedicate with ibuprofen before I ride, I only last about an hour before things get too miserable...
03-01-24, 08:13 AM
02-29-24, 10:07 AM
Replies: 9
Views: 449
Posted By JohnDThompson

The axle position in the dropout is determined by...

The axle position in the dropout is determined by the chain and your gearing. As long as the axle is fully within the slot (and yours is), it'll be fine. If you change your gearing to a smaller...
02-29-24, 10:03 AM
Replies: 11
Views: 473
Posted By JohnDThompson

Like this: ...

Like this:
https://i2.wp.com/cdn.makezine.com/uploads/2010/09/rebar_bike_01.jpg
Forum: Road Cycling
02-29-24, 09:59 AM
Replies: 47
Views: 1,321
Posted By JohnDThompson

It's only "dumb" if you don't enjoy riding...

It's only "dumb" if you don't enjoy riding it.
02-29-24, 09:44 AM
Replies: 38
Views: 1,539
Posted By JohnDThompson

Exactly. A through-axle is a safety feature on...

Exactly. A through-axle is a safety feature on bikes with disc brakes. Rim brakes have been safely used with quick-releases for decades.
02-29-24, 09:29 AM
Replies: 43
Views: 1,053
Posted By JohnDThompson

Ok, but that saddle is pretty obviously broken. I...

Ok, but that saddle is pretty obviously broken. I also like to fix and reuse things whenever possible, but there is a point of diminishing returns, and that saddle looks well past it.
02-29-24, 09:22 AM
Replies: 11
Views: 307
Posted By JohnDThompson

You can put pictures in a gallery associated with...

You can put pictures in a gallery associated with your user account. Let us know when you do, and other people can link to them here.
02-28-24, 03:46 PM
Replies: 25
Views: 906
Posted By JohnDThompson

Agreed, it does appear to be British. And...

Agreed, it does appear to be British.


And appears to be missing the toothed lockwasher to prevent the threaded race from moving:...
02-28-24, 02:44 PM
Replies: 114
Views: 3,074
Posted By JohnDThompson

In most cases, yes. The charity shop where I...

In most cases, yes. The charity shop where I volunteer is part of an urban farm. We don't have a budget for new tubes (we rely totally on donations), so we patch tubes whenever possible. When it is...
02-28-24, 02:32 PM
Replies: 35
Views: 1,073
Posted By JohnDThompson

I use the open source app "Open Tracks" ...

I use the open source app "Open Tracks"
https://opentracksapp.com/
02-26-24, 08:01 AM
Replies: 16
Views: 461
Posted By JohnDThompson

It does look original, except for rims and tires....

It does look original, except for rims and tires. Here's a spec sheet from BITD:
https://cimg4.ibsrv.net/gimg/bikeforums.net-vbulletin/722x1068/ata_lstl_cb21c77b1995dc299ed721de5a7bd23302ddb05b.jpg
02-25-24, 11:19 AM
Replies: 47
Views: 1,085
Posted By JohnDThompson

Chain length depends on your specific gear range...

Chain length depends on your specific gear range and chainstay length. If you have the old chain, trim the new chain to match. Otherwise, this may help:...
02-25-24, 08:29 AM
Replies: 49
Views: 1,182
Posted By JohnDThompson

Not without modification of the upper rail clamps...

Not without modification of the upper rail clamps to fit those half-round nuts.
02-24-24, 11:34 AM
Replies: 49
Views: 1,182
Posted By JohnDThompson

Maybe. But you'd need to fit threaded inserts...

Maybe. But you'd need to fit threaded inserts into the upper rail clamps for those bolts to work.
02-24-24, 11:00 AM
Replies: 17
Views: 649
Posted By JohnDThompson

IME, the issue with freewheels having more than...

IME, the issue with freewheels having more than seven sprockets is not the strength of the freewheel, but a propensity to axle breakage due to the longer unsupported length of axle needed to provide...
02-24-24, 10:53 AM
Replies: 22
Views: 1,193
Posted By JohnDThompson

And Google Books has his autobiography available...

And Google Books has his autobiography available for download (now in the public domain):...
02-24-24, 10:38 AM
Replies: 56
Views: 1,429
Posted By JohnDThompson

Correct. And there were shop-quality versions of...

Correct. And there were shop-quality versions of that tool from Zeus, Kingsbridge, and perhaps others. AFAIK, they've all been out of production for quite a while, so Sheldon's bolt&washers version...
02-24-24, 10:34 AM
Replies: 56
Views: 1,429
Posted By JohnDThompson

Sure, but you still need to get the fixed cup out...

Sure, but you still need to get the fixed cup out before you can install a cartridge.
02-24-24, 10:14 AM
Replies: 49
Views: 1,182
Posted By JohnDThompson

Avocet also offered a two-bolt post, with both...

Avocet also offered a two-bolt post, with both bolts accessible from below. But the bolts are only 5mm diameter, and breakage issues have been reported. FWIW, mine hasn't broken (yet)....
02-24-24, 09:59 AM
Replies: 6
Views: 403
Posted By JohnDThompson

N.B. the "+1 +1.5" markings on two of the...

N.B. the "+1 +1.5" markings on two of the spindles indicate they are for post-CPSC crankarms, to provide clearance for the wider post-CSPC front derailleur. I can't see the markings on the third...
02-24-24, 09:38 AM
Replies: 14
Views: 408
Posted By JohnDThompson

The frame and fittings were designed by Tim...

The frame and fittings were designed by Tim Isaac, who used that type of binder on the custom frames he built before joining Trek....
02-24-24, 08:54 AM
Replies: 4
Views: 239
Posted By JohnDThompson

If you bought the bike new from a bike shop, most...

If you bought the bike new from a bike shop, most include a post-purchase tune-up at no additional cost. Check this first. Failing that, all you may need is a derailleur adjustment; the videos...
02-24-24, 07:52 AM
Replies: 49
Views: 1,182
Posted By JohnDThompson

It also depends on the saddle. If you're using a...

It also depends on the saddle. If you're using a plastic base saddle, most of those have enough clearance to reach the bolts with a combo wrench from the side. But if you're using a leather saddle...
Forum: Road Cycling
02-23-24, 10:06 AM
Replies: 41
Views: 1,314
Posted By JohnDThompson

I haven't found that different pedals will solve...

I haven't found that different pedals will solve "hot foot" or numbness issues, but using an insole with more arch and metatarsal support did wonders for me.
Showing results 1 to 50 of 1000
 


 
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