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Search: Posts Made By: JohnDThompson
Showing results 1 to 50 of 1000
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Forum: Fifty Plus (50+)
04-16-24, 04:05 PM
Replies: 34
Views: 517
Posted By JohnDThompson

A resting pulse of 127 is considered tachycardic,...

A resting pulse of 127 is considered tachycardic, and could indicate dehydration. If your urine is dark after riding, that would also be consistent with dehydration. You may only need to drink more...
Forum: Fifty Plus (50+)
04-16-24, 03:53 PM
Replies: 34
Views: 517
Posted By JohnDThompson

100/60 is considered a normal blood pressure....

100/60 is considered a normal blood pressure. Were you feeling symptomatic in any way (dizzy, malaise, nausea, etc.)? What was your pulse? Low blood pressure and high pulse rate after exertion could...
Forum: Classic & Vintage
04-16-24, 12:45 PM
Replies: 12
Views: 1,629
Posted By JohnDThompson

Isn't member ussalmon who posted above looking...

Isn't member ussalmon who posted above looking for an original actually Gus Salmon? In which case, he may be able to make a reproduction from the picture you posted.
Forum: Singlespeed & Fixed Gear
04-14-24, 07:52 PM
Replies: 6
Views: 3,006
Posted By JohnDThompson

I've used Miche 1.32" x 24tpi LH lockrings in the...

I've used Miche 1.32" x 24tpi LH lockrings in the past; good quality and a fraction of the price of Phil or Campagnolo lockrings. But they don't seem to be available anymore… :(
Forum: General Cycling Discussion
04-13-24, 07:57 AM
Replies: 31
Views: 960
Posted By JohnDThompson

Especially with saddles and seat posts.:lol:

Especially with saddles and seat posts.:lol:
Forum: Bicycle Mechanics
04-12-24, 07:53 AM
Replies: 8
Views: 338
Posted By JohnDThompson

Seriously? The MF-62nn (Shimano 600) and MF-72nn...

Seriously? The MF-62nn (Shimano 600) and MF-72nn (Dura-Ace) freewheels were the first to get the Uniglide twisted tooth treatment, and IMO are among the best best freewheels ever put on the market.
...
Forum: Road Cycling
04-12-24, 06:29 AM
Replies: 43
Views: 1,460
Posted By JohnDThompson

That's a question for the lawyers, which I am not.

That's a question for the lawyers, which I am not.
Forum: Road Cycling
04-11-24, 11:12 AM
Replies: 82
Views: 2,369
Posted By JohnDThompson

The shallow rim wheel will likely be lighter than...

The shallow rim wheel will likely be lighter than the deep-profile race wheels, but less aerodynamic. But the advantage of aerodynamics falls off with reduced speed, while the advantage of light...
Forum: Road Cycling
04-11-24, 11:05 AM
Replies: 43
Views: 1,460
Posted By JohnDThompson

Yes. I was Trek's warranty claim inspector in...

Yes. I was Trek's warranty claim inspector in Waterloo in the mid-80s; eduskator's comment is spot-on. If you raced on the frame, that would also exclude warranty coverage. But warranty claims are...
Forum: Bicycle Mechanics
04-11-24, 10:39 AM
Replies: 31
Views: 579
Posted By JohnDThompson

You line up the middle ring with the middle...

You line up the middle ring with the middle sprocket of the rear cluster to minimize chain deflection in the extreme (large-large and small-small) gear combinations. The inner and outer rings in...
Forum: Fifty Plus (50+)
04-10-24, 08:12 PM
Replies: 20
Views: 433
Posted By JohnDThompson

I did. We had about 84% occlusion here, so it got...

I did. We had about 84% occlusion here, so it got dim but not dark. I had the sun behind me on the return leg, and got the "camera obscura" projection of the eclipse through the helmet vents on the...
Forum: Classic & Vintage
04-10-24, 07:59 PM
Replies: 3
Views: 214
Posted By JohnDThompson

JIS pressed head tube fittings are 30.0mm...

JIS pressed head tube fittings are 30.0mm diameter; ISO are 30.2mm diameter. JIS crown race seats are 27.0mm; ISO are 26.4. A JIS head tube and fork can be trivially converted to ISO spec by a...
Forum: Bicycle Mechanics
04-10-24, 07:45 PM
Replies: 39
Views: 1,435
Posted By JohnDThompson

True, but as more and more sprockets were piled...

True, but as more and more sprockets were piled onto the rear cluster, and longer housing runs used to mount shifters on handlebars became more common, indexed shifting performance became...
Forum: Bicycle Mechanics
04-10-24, 07:01 PM
Replies: 39
Views: 1,435
Posted By JohnDThompson

Compressionless derailleur cable housing only...

Compressionless derailleur cable housing only became necessary with the advent of indexed derailleur shifting, in the mid 80s. Prior to that, friction shifting worked fine with the same type of...
Forum: Classic & Vintage
04-07-24, 06:54 AM
Replies: 11
Views: 503
Posted By JohnDThompson

Maybe "guidonnet" levers? ...

Maybe "guidonnet" levers?
https://cimg2.ibsrv.net/gimg/bikeforums.net-vbulletin/759x537/bars_854ed7adf1d11a947170ee27851f30ef2302fd0e.jpg
Forum: General Cycling Discussion
04-06-24, 06:06 PM
Replies: 182
Views: 6,171
Posted By JohnDThompson

Actually, you need a frame and fork designed to...

Actually, you need a frame and fork designed to handle disc brake loads, and hubs capable of mounting a brake rotor.




No. Machined brake tracks are a relatively modern feature. Unmachined...
Forum: Classic & Vintage
04-05-24, 08:34 AM
Replies: 12
Views: 451
Posted By JohnDThompson

I don't think those would be a good fit on the...

I don't think those would be a good fit on the Dia-Compe 610 levers. The 610 lever bodies are pretty much rectangular, while the Campagnolo-type lever bodies are more trapezoidal.
Forum: Fifty Plus (50+)
04-04-24, 01:43 PM
Replies: 16
Views: 553
Posted By JohnDThompson

Lately, I've been donating platelets instead of...

Lately, I've been donating platelets instead of whole blood. The red cells are returned to your system in the process, so no anemic lethargy afterward.
Forum: Classic & Vintage
04-01-24, 11:52 AM
Replies: 82
Views: 3,406
Posted By JohnDThompson

I know more than a few people who tore the cleats...

I know more than a few people who tore the cleats out of their shoes in a panic stop with those pedals.
Forum: Classic & Vintage
04-01-24, 11:45 AM
Replies: 9
Views: 304
Posted By JohnDThompson

Schwinn modified the Huret dropouts on their...

Schwinn modified the Huret dropouts on their Sports Tourer frames to accept Shimano derailleurs by cutting a notch in the front of the hanger to hold the derailleur's pivot spring stop.
...
Forum: General Cycling Discussion
04-01-24, 11:28 AM
Replies: 39
Views: 1,166
Posted By JohnDThompson

Have you tried a different SD card?

Have you tried a different SD card?
Forum: General Cycling Discussion
04-01-24, 11:24 AM
Replies: 32
Views: 1,134
Posted By JohnDThompson

Yes, it's cracked. Either replace the whole chain...

Yes, it's cracked. Either replace the whole chain or splice in another quick-link.

But the crack begs the question: why did it happen? Did you soak the chain at some point with a non-petroleum...
Forum: Classic & Vintage
03-31-24, 09:01 PM
Replies: 27,966
Views: 4,520,737
Posted By JohnDThompson

Not a "loaded tour," but I've done the Lake Pepin...

Not a "loaded tour," but I've done the Lake Pepin 3-Speed tour several times on my 1973 Raleigh Superbe. I usually set up camp in Wabesha, drive to Red Wing, ride from Red Wing to Wabesha, spend the...
Forum: Bicycle Mechanics
03-31-24, 09:00 AM
Replies: 26
Views: 826
Posted By JohnDThompson

I see no point in doing so. It would result in...

I see no point in doing so. It would result in the same problem as threading a track sprocket directly onto a freewheel hub: it will unthread itself if/when you resist the pedals to control speed.
Forum: General Cycling Discussion
03-31-24, 08:43 AM
Replies: 102
Views: 3,557
Posted By JohnDThompson

+1 this. And even if you are racing, UCI...

+1 this.

And even if you are racing, UCI imposes a minimum weight for bikes used in their sanctioned events.
Forum: Road Cycling
03-29-24, 03:22 PM
Replies: 14
Views: 515
Posted By JohnDThompson

It's unlikely bordering on inconceivable that...

It's unlikely bordering on inconceivable that your chain broke in two places simultaneously; trim the new chain to match the old one.
Forum: Singlespeed & Fixed Gear
03-28-24, 05:46 PM
Replies: 2
Views: 281
Posted By JohnDThompson

I like the MKS "Fit α Sprint" straps. They're the...

I like the MKS "Fit α Sprint" straps. They're the closest thing to the old Alfredo Binda straps I've found. The strap is leather, with a plastic mesh laminated in to reduce stretching under load...
Forum: Classic & Vintage
03-28-24, 09:43 AM
Replies: 13
Views: 342
Posted By JohnDThompson

FWIW, Trek used a lot of Helicomatic hubs back in...

FWIW, Trek used a lot of Helicomatic hubs back in the 80s, and we installed Sedissport chains on them. Sachs bought out Sedis many years ago; one of their 7 or 8-speed chains ought to work on the...
Forum: Classic & Vintage
03-27-24, 12:17 PM
Replies: 2,622
Views: 672,221
Posted By JohnDThompson

Looks good; could be original and I just don't...

Looks good; could be original and I just don't recall that crown being used.
Forum: Classic & Vintage
03-27-24, 06:26 AM
Replies: 2,622
Views: 672,221
Posted By JohnDThompson

Nor have I; not on a Trek, anyway. What does the...

Nor have I; not on a Trek, anyway. What does the fork end treatment look like? Does it match the rear dropouts?
Forum: Bicycle Mechanics
03-27-24, 06:13 AM
Replies: 26
Views: 698
Posted By JohnDThompson

And the other end of the pilot threads onto...

And the other end of the pilot threads onto "stud-type" axles. But it only works if the arm threads are damaged, but not stripped. And AFAIK, it's been out of production for many years now....
Forum: Bicycle Mechanics
03-26-24, 04:19 PM
Replies: 26
Views: 698
Posted By JohnDThompson

That's how the VAR kit I mentioned above works....

That's how the VAR kit I mentioned above works. It cuts new, 24mm x 1.5mm threads, and then sell the customer the 24 x 1.5 thread self-extractors for subsequent crank removals.
Forum: Bicycle Mechanics
03-26-24, 04:17 PM
Replies: 26
Views: 698
Posted By JohnDThompson

I've had that fail several times, on cheap MTB...

I've had that fail several times, on cheap MTB cranks with riveted chainrings. I couldn't get the wedges placed in way that didn't end up blocked by the inner chainring.
Forum: Classic & Vintage
03-26-24, 08:19 AM
Replies: 18
Views: 596
Posted By JohnDThompson

Gipiemme dropouts. They were available with or...

Gipiemme dropouts. They were available with or without the eyelet.
https://cimg8.ibsrv.net/gimg/bikeforums.net-vbulletin/1324x923/gpm_patent_7d457019f156e30f61bd1ef5c02e6a2a24f14da5.jpg...
Forum: Bicycle Mechanics
03-26-24, 06:26 AM
Replies: 26
Views: 698
Posted By JohnDThompson

Often, removing the mounting bolt and riding...

Often, removing the mounting bolt and riding around the block a few times is enough to work the arm loose. Don't go too far from home/shop, as once it gets loose you'll want to stop riding and walk...
Forum: Classic & Vintage
03-25-24, 11:44 AM
Replies: 6
Views: 235
Posted By JohnDThompson

A Champion #1 steer tube will have internal...

A Champion #1 steer tube will have internal rifling like Columbus steer tubes, but six ribs instead of five, and wound in the opposite direction. E.g....
Forum: Classic & Vintage
03-22-24, 08:36 PM
Replies: 83,260
Views: 14,122,166
Posted By JohnDThompson

https://cimg9.ibsrv.net/gimg/bikeforums.net-vbulle...

https://cimg9.ibsrv.net/gimg/bikeforums.net-vbulletin/427x171/masi_962ef88fda984047b8b314f70a5adec1b0246cae.jpg
Forum: Singlespeed & Fixed Gear
03-22-24, 09:21 AM
Replies: 41
Views: 25,349
Posted By JohnDThompson

+1 this.

+1 this.
Forum: Classic and Vintage Sales
03-22-24, 09:11 AM
Replies: 13
Views: 652
Posted By JohnDThompson

IME, skewer springs are generic and completely...

IME, skewer springs are generic and completely interchangeable between hub brands.
Forum: Classic & Vintage
03-22-24, 09:03 AM
Replies: 41
Views: 1,509
Posted By JohnDThompson

From the original FB post: ...

From the original FB post:
https://cimg8.ibsrv.net/gimg/bikeforums.net-vbulletin/1076x684/hoods_e5abd2d51a8f250064712979da3c29352766a7e6.jpg...
Forum: Classic & Vintage
03-22-24, 08:49 AM
Replies: 83,260
Views: 14,122,166
Posted By JohnDThompson

FWIW, two of my friends worked for Masi...

FWIW, two of my friends worked for Masi California back in the mid-80s (Dave Tesch and Joe Starck), and they pronounced Masi as "Mazi."
Forum: Classic & Vintage
03-21-24, 08:31 PM
Replies: 83,260
Views: 14,122,166
Posted By JohnDThompson

IIRC, the "S" followed by a vowel in Italian...

IIRC, the "S" followed by a vowel in Italian often takes the "Z" sound.
https://italian.stackexchange.com/questions/5752/what-words-that-have-vowel-s-vowel-are-pronunced-s-instead-of-z
Forum: Classic & Vintage
03-21-24, 12:25 PM
Replies: 41
Views: 1,509
Posted By JohnDThompson

Repo lever hoods source

This just popped up on the Facebook "Steel is Real" group. Looks like a good variety of models. No personal experience with them:
...
Forum: Classic & Vintage
03-21-24, 11:51 AM
Replies: 70
Views: 6,826
Posted By JohnDThompson

Lots of cool old city bikes still being used in...

Lots of cool old city bikes still being used in Italy. I spotted these in Cremona a few years back:...
Forum: Classic & Vintage
03-21-24, 11:33 AM
Replies: 83,260
Views: 14,122,166
Posted By JohnDThompson

They almost got it right. The final Cyrillic...

They almost got it right. The final Cyrillic character in the name should be the "backwards N" character, which the forum software doesn't allow.

Maybe it can be done as an image:...
Forum: Classic & Vintage
03-20-24, 07:41 PM
Replies: 18
Views: 595
Posted By JohnDThompson

H Lloyd Cycles in England also has a good...

H Lloyd Cycles in England also has a good selection:
https://hlloydcycles.com/en-us/collections
Forum: Classic & Vintage
03-20-24, 06:16 PM
Replies: 82
Views: 3,406
Posted By JohnDThompson

Campagnolo Triomphe is one of my favorites for a...

Campagnolo Triomphe is one of my favorites for a touring bike. They work equally well with slotted cleat bike shoes and shoe-soled street shoes....
Forum: Classic & Vintage
03-20-24, 09:23 AM
Replies: 82
Views: 3,406
Posted By JohnDThompson

Zeus 2000: titanium spindle, sealed bearings, and...

Zeus 2000: titanium spindle, sealed bearings, and titanium cage that is more durable than the aluminum cage used on many other pedals (including Campagnolo Super Record and Superleggero), and only...
Forum: Classic & Vintage
03-20-24, 07:39 AM
Replies: 39
Views: 1,060
Posted By JohnDThompson

Looks like "Tourney," which, IIRC was made by...

Looks like "Tourney," which, IIRC was made by Takagi, later acquired by Shimano.
Forum: Bicycle Mechanics
03-20-24, 07:16 AM
Replies: 32
Views: 980
Posted By JohnDThompson

I assume that when you write "races," you're...

I assume that when you write "races," you're referring to the cups. The reason the cones wear faster than the cup is because the bearing track on the cones is shorter than that of the cups, which...
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