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Search: Posts Made By: JohnDThompson
Showing results 1 to 50 of 1000
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07-13-20, 07:32 AM
Replies: 11
Views: 184
Posted By JohnDThompson

Loosen the lockring, tighten the cup a little,...

Loosen the lockring, tighten the cup a little, re-tighten the lockring, check for play, repeat as needed.
Forum: Road Cycling
07-11-20, 06:37 PM
Replies: 5
Views: 353
Posted By JohnDThompson

If your bike has horizontal dropouts, you need to...

If your bike has horizontal dropouts, you need to use old style, enclosed-cam quick releases; the modern, open-cam style is designed for vertical dropouts and lack sufficient clamping pressure to...
07-11-20, 06:26 PM
Replies: 9
Views: 224
Posted By JohnDThompson

Take the lane when you enter the roundabout....

Take the lane when you enter the roundabout. Don't let the cars pull alongside you and potentially run you off the road when they exit the roundabout without noticing you. That's what the Wisconsin...
07-10-20, 07:16 AM
Replies: 9
Views: 291
Posted By JohnDThompson

I suspect that heat sublimation is used because...

I suspect that heat sublimation is used because the synthetic fabric is not amenable to traditional dying methods.
07-09-20, 06:43 AM
Replies: 25
Views: 520
Posted By JohnDThompson

What benefit do you hope to gain with a lower...

What benefit do you hope to gain with a lower spoke count? The advantage of low spoke counts is primarily aerodynamic, and the degree of benefit increases with higher average speed. If you're a...
07-07-20, 05:53 PM
Replies: 33
Views: 732
Posted By JohnDThompson

What kind of girly-man would use something like...

What kind of girly-man would use something like that? :)
07-07-20, 05:20 PM
Replies: 19,168
Views: 3,128,692
Posted By JohnDThompson

As Richard Stallman would say about open source...

As Richard Stallman would say about open source software: "Free," as in "speech." Not "free" as in "beer."
07-07-20, 04:07 PM
Replies: 6
Views: 240
Posted By JohnDThompson

A "third hand" brake tool will hold the pads...

A "third hand" brake tool will hold the pads against the rim while you secure the cable:

https://images-na.ssl-images-amazon.com/images/I/61YchqvZ91L._AC_SX569_.jpg

I'm not especially fond of...
07-06-20, 03:53 PM
Replies: 13
Views: 407
Posted By JohnDThompson

In that case, it's likely something with the...

In that case, it's likely something with the bearings. You don't say what type of bearings you have, e.g. cartridge, retained balls, loose balls.

It's unlikely to be the compression plug, as that...
07-06-20, 03:46 PM
Replies: 55
Views: 1,436
Posted By JohnDThompson

You know what they say about "standards:" the...

You know what they say about "standards:" the best thing about them is that you have so many to choose from! :thumb:
07-06-20, 03:20 PM
Replies: 20
Views: 2,256
Posted By JohnDThompson

I've used single half-links for decades and never...

I've used single half-links for decades and never had a problem.
Forum: Framebuilders
07-05-20, 03:43 PM
Replies: 6
Views: 194
Posted By JohnDThompson

Most Reynolds 531 steer tubes were butted (and...

Most Reynolds 531 steer tubes were butted (and should be stamped as such), but since 531 main tubes were available in straight gauge, I suppose the steer tube could be as well. 753 steer tubes were...
07-05-20, 03:20 PM
Replies: 6
Views: 326
Posted By JohnDThompson

I have a USA-made Touring II saddle; the cover...

I have a USA-made Touring II saddle; the cover appears to be actual leather. The Touring I model may have used a synthetic material.
07-05-20, 02:45 PM
Replies: 28
Views: 683
Posted By JohnDThompson

+1 this. That was my thought as well. Checking...

+1 this. That was my thought as well. Checking fork alignment can be tricky, as there are at least three aspects to alignment: offset must be the same on both blades, the midpoint of the hub axle...
07-05-20, 02:32 PM
Replies: 8
Views: 221
Posted By JohnDThompson

It depends on how much good thread is left. Taps...

It depends on how much good thread is left. Taps can't restore missing material, but they can clean up a damaged area enough to allow engagement with undamaged threads. I wouldn't count on JB Weld to...
07-05-20, 07:21 AM
Replies: 6
Views: 326
Posted By JohnDThompson

Proofide will work, but is overkill for a...

Proofide will work, but is overkill for a plastic-based saddle. SnoSeal or other leather treatment will be fine as well.

The first Avocet saddles were made in Italy by Selle Italia. Later...
07-05-20, 07:18 AM
Replies: 23
Views: 793
Posted By JohnDThompson

The first 720s were built to use 27" wheels, as...

The first 720s were built to use 27" wheels, as the model was intended for loaded touring, and 700C was not yet common in rural areas. Later ones used 700C wheels. The only difference was where the...
07-05-20, 07:00 AM
Replies: 2
Views: 118
Posted By JohnDThompson

I looked up Victoria Tisuna on Google but didn't...

I looked up Victoria Tisuna on Google but didn't see anything to suggest that the headset is significantly different from other headsets of that era. The keyed washer on those headsets sometimes gets...
07-05-20, 06:42 AM
Replies: 4
Views: 262
Posted By JohnDThompson

I've used both. You're no more likely to roll a...

I've used both. You're no more likely to roll a tire with tape than with a proper glue job. The modern Tufo tape makes mounting tires very easy, but DANG! It can be quite difficult to pry the tire...
07-05-20, 06:35 AM
Replies: 10
Views: 292
Posted By JohnDThompson

For indexed shifting systems, they force you to...

For indexed shifting systems, they force you to install the rings in the proper orientation for the ramps and pins to be effective in facilitating shifts.

But this brings up another point for the...
07-05-20, 06:08 AM
Replies: 13
Views: 430
Posted By JohnDThompson

This implies that you currently use cleats. What...

This implies that you currently use cleats. What do you find deficient about your current pedals and cleats that makes you want to change them?



"Platform" pedals have a flat surface to accept...
07-04-20, 06:09 AM
Replies: 13
Views: 407
Posted By JohnDThompson

Are you certain the headset is the source? Have...

Are you certain the headset is the source? Have you checked handlebar/stem?
07-03-20, 02:46 PM
Replies: 2
Views: 161
Posted By JohnDThompson

I don't have a 600 SIS lever to look at, but IIRC...

I don't have a 600 SIS lever to look at, but IIRC Dura-Ace SIS downtube levers are very similar (I know the indexing unit interchanges with 600). Here's what the Dura-Ace lever looks like:
07-03-20, 02:25 PM
Replies: 18
Views: 444
Posted By JohnDThompson

I'm with Iride01; 2psi/day is not enough to get...

I'm with Iride01; 2psi/day is not enough to get worked up about. If it really bothers you, pull the valve core and pour in some sealant.
07-03-20, 06:09 AM
Replies: 13
Views: 353
Posted By JohnDThompson

70mm English thread shells are not uncommon on...

70mm English thread shells are not uncommon on Japanese production bikes. Takeaway: don't assume shell width is a reliable indicator of thread spec!



You'll have to do a bit of finagling to get...
07-02-20, 08:31 PM
Replies: 5
Views: 306
Posted By JohnDThompson

A KKT Pro-Ace is about as high quality as you can...

A KKT Pro-Ace is about as high quality as you can get compared to a Wellgo pedal of any sort.
07-02-20, 08:20 PM
Replies: 87
Views: 5,279
Posted By JohnDThompson

The question was whether people had heard of...

The question was whether people had heard of actual carbon fiber bike failures, not whether carbon fiber is inferior or superior to other materials.
07-02-20, 12:53 PM
Replies: 13
Views: 270
Posted By JohnDThompson

I don't see that either the old style TL-FW20...

I don't see that either the old style TL-FW20 splined freewheel tool or the later TL-FW30 tool match the dimensions or spline count you give. Early 80s was a transition period from freewheels to...
07-02-20, 12:37 PM
Replies: 87
Views: 5,279
Posted By JohnDThompson

George Hincapie famously had his carbon-fiber...

George Hincapie famously had his carbon-fiber fork fail during the 2006 Paris-Roubaix.

And there's the "Busted Carbon (http://www.bustedcarbon.com/)" blog documenting numerous other examples.
07-01-20, 06:25 PM
Replies: 38
Views: 1,418
Posted By JohnDThompson

No, due to the diameter of the thread where the...

No, due to the diameter of the thread where the smallest sprocket attaches to the body, 14T is the smallest sprocket that will fit on a "Perfect" body. You could conceivably braze a smaller sprocket...
07-01-20, 05:53 PM
Replies: 6,435
Views: 559,092
Posted By JohnDThompson

Not the fancy version, alas:

Not the fancy version, alas:
07-01-20, 05:43 AM
Replies: 25
Views: 612
Posted By JohnDThompson

And/or go with a wider tire, if your frame and...

And/or go with a wider tire, if your frame and fork allow that.
Forum: Road Cycling
06-29-20, 12:51 PM
Replies: 16
Views: 767
Posted By JohnDThompson

My experience is that cheap shorts may only last...

My experience is that cheap shorts may only last a season or two. High quality shorts can last a lot longer. I have a lot of cheap shorts that I only wear under tights because of the translucency...
06-29-20, 12:23 PM
Replies: 26
Views: 803
Posted By JohnDThompson

That's a bulge-formed bottom bracket, not cast....

That's a bulge-formed bottom bracket, not cast. That type of failure, while not common, is not unknown, either. The bulge-forming process leaves thin areas in the shell, that if not fully penetrated...
06-29-20, 07:00 AM
Replies: 13
Views: 337
Posted By JohnDThompson

If you need a hub for 120mm rear wheel OLD, it's...

If you need a hub for 120mm rear wheel OLD, it's usually not hard to use a wider hub and simply trim the axle and remove spacers to get that width. Even better if the hub isn't built into a wheel...
06-29-20, 06:45 AM
Replies: 18
Views: 499
Posted By JohnDThompson

Kucharik sells chamois separately or you can have...

Kucharik sells chamois separately or you can have him sew in the replacement:

https://www.kucharikclothing.com/repairs.php?osCsid=24edb597371a4ebf60b29afe1b8181a3
06-27-20, 06:17 PM
Replies: 23
Views: 619
Posted By JohnDThompson

Bicycle Research made a reamer/Italian tap set...

Bicycle Research made a reamer/Italian tap set for this purpose. Perhaps a local bike shop still has one?
06-27-20, 05:11 PM
Replies: 15
Views: 302
Posted By JohnDThompson

I'd take the clamp piece to the hardware store...

I'd take the clamp piece to the hardware store and test-fit a bunch of steel rods, nails, etc. to find the best fit, and buy that one.
06-27-20, 04:37 PM
Replies: 15
Views: 302
Posted By JohnDThompson

It's just the pin that broke; the clamp and...

It's just the pin that broke; the clamp and derailleur body are intact? You shoukld be able to replace the pin with a piece of steel rod or even a nail. I used a finishing nail to replace the pin on...
06-27-20, 04:32 PM
Replies: 10
Views: 305
Posted By JohnDThompson

Rotate the stem so that the narrow part of the...

Rotate the stem so that the narrow part of the clamp is on the inside of the handlebar's curve and you should be able to slide it through.
06-27-20, 07:06 AM
Replies: 5
Views: 183
Posted By JohnDThompson

Those look to be pretty standard...

Those look to be pretty standard (http://velobase.com/ViewComponent.aspx?ID=2b99f8d4-1d96-4f69-bd3f-45b38dd7b7b9&Enum=117). I suspect almost anything could replace them. But why do they need...
06-27-20, 07:01 AM
Replies: 28
Views: 581
Posted By JohnDThompson

That's probably the primary concern. I remember...

That's probably the primary concern. I remember the original Matrix aero-profile "Iso" tubular rims had to use rectangular washers:
06-26-20, 07:59 PM
Replies: 23
Views: 851
Posted By JohnDThompson

Unless you have a means to secure the slotted nut...

Unless you have a means to secure the slotted nut to prevent it from spinning (precisely the OP's problem), there's no way to drill it out; the whole assembly will just spin.
06-26-20, 01:34 PM
Replies: 23
Views: 851
Posted By JohnDThompson

The VAR-35200 is designed for this type of chore....

The VAR-35200 is designed for this type of chore. Unfortunately, it's not cheap, but perhaps a local bike shop has one and can remove the bolt for you? Make sure the bolt threads are lubricated to...
06-26-20, 08:37 AM
Replies: 9
Views: 301
Posted By JohnDThompson

I just melted a blob of brass onto the dropout...

I just melted a blob of brass onto the dropout and filed it into shape:
06-26-20, 07:25 AM
Replies: 6
Views: 379
Posted By JohnDThompson

No, that was Nuovo Record. Record, Record triple,...

No, that was Nuovo Record. Record, Record triple, Pista, and Gran Sport all used the "thin" cups.

From Campagnolo USA's "Record News" newsletter:
06-25-20, 10:14 AM
Replies: 6
Views: 379
Posted By JohnDThompson

Black oxide treatment on the spindle indicates...

Black oxide treatment on the spindle indicates Gran Sport. Record road and track bottom brackets also used the "thin" cups, but had a silver finish on the spindle.
06-25-20, 09:50 AM
Replies: 11
Views: 367
Posted By JohnDThompson

Almost certainly a limit adjustment issue. For a...

Almost certainly a limit adjustment issue. For a new bike, this should be fixed gratis. Take it back to wherever the bike was purchased for them to deal with it.
06-25-20, 09:47 AM
Replies: 19
Views: 362
Posted By JohnDThompson

The crank arm doesn't care if it's mounted with a...

The crank arm doesn't care if it's mounted with a bolt or a nut. JIS taper is JIS taper regardless of mounting type. The concern is whether the axle length is appropriate for whatever crank you want...
06-25-20, 07:16 AM
Replies: 11
Views: 411
Posted By JohnDThompson

I was a bike commuter before I retired. It was...

I was a bike commuter before I retired. It was often a high point of my day, and allowed stress relief on the way home. I didn't have the canoe leg on my commute, but it did include a lakeside park...
Showing results 1 to 50 of 1000
 


 
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