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Search: Posts Made By: JohnDThompson
Showing results 1 to 50 of 1000
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01-25-20, 09:54 PM
Replies: 13
Views: 212
Posted By JohnDThompson

Yeah, for a lockring you really want something...

Yeah, for a lockring you really want something that can grip the part, like a pliers:

http://www.os2.dhs.org/~john/var-16.jpg
01-25-20, 12:47 PM
Replies: 2,038
Views: 181,544
Posted By JohnDThompson

The stem just arrived today and works perfectly: ...

The stem just arrived today and works perfectly:



HT to eom :thumb:
01-25-20, 08:21 AM
Replies: 11
Views: 276
Posted By JohnDThompson

Yes, a caliper for measuring the over-the-locknut...

Yes, a caliper for measuring the over-the-locknut spacing on a hub. You open it so the ends touch both locknut faces, then bring it to a ruler to measure.
01-25-20, 08:13 AM
Replies: 17
Views: 191
Posted By JohnDThompson

Looks like the OP has a Swiss thread frame: ...

Looks like the OP has a Swiss thread frame:





I suspect you're right. Kingsbridge, Zeus, and others made professional-quality cup vises that ought to do the job.
...
01-25-20, 07:55 AM
Replies: 2,038
Views: 181,544
Posted By JohnDThompson

A Sakae Ringyo stem with a 0.833" shaft.

A Sakae Ringyo stem with a 0.833" shaft.
01-24-20, 09:04 AM
Replies: 23
Views: 421
Posted By JohnDThompson

Boulder Bicycle sells Mikashima laminated straps...

Boulder Bicycle sells Mikashima laminated straps at a good price:

http://boulderbicycle.bike/images/products/19164.JPG
MKS FitA Tan Toe Strap Pair...
01-23-20, 05:56 PM
Replies: 12
Views: 449
Posted By JohnDThompson

Sutherland's has a graphic representation of...

Sutherland's has a graphic representation of spindle tapers, including the old style Ofmega:

http://www.os2.dhs.org/~john/spindle-taper.jpg
Source: Sutherland's 4th Edition
01-23-20, 05:11 PM
Replies: 2
Views: 209
Posted By JohnDThompson

Going from 12-28 to 11-36 will likely need a...

Going from 12-28 to 11-36 will likely need a longer chain, and perhaps a longer-cage rear derailleur. It's hard to be more specific without knowing exactly what you are dealing with.
01-23-20, 10:03 AM
Replies: 12
Views: 449
Posted By JohnDThompson

I have an Avocet triple I used on my wife's bike....

I have an Avocet triple I used on my wife's bike. It held up fine for many years, but she doesn't punish her equipment.

The spindle measures 124mm end to end, and has an ISO taper.
...
01-23-20, 09:01 AM
Replies: 13
Views: 287
Posted By JohnDThompson

Probably the threads in the shell should be...

Probably the threads in the shell should be chased to seat the cartridge fully. A bike shop with proper taps is the ideal way to deal with this, but you can make a low-budget thread chaser out of an...
01-23-20, 08:25 AM
Replies: 2,038
Views: 181,544
Posted By JohnDThompson

Looks like I have an appropriate stem sorted...

Looks like I have an appropriate stem sorted already.

Thanks for responding!
01-22-20, 06:44 PM
Replies: 4
Views: 117
Posted By JohnDThompson

Like this bike? ...

Like this bike?

https://3.bp.blogspot.com/-yXGgSRuO568/VTPnhsz2ZbI/AAAAAAABIFI/v_x4k2162hQx5MuvhHnR3_drmRVlFiTYACPcB/s640/IMG_0041.JPG
...
01-22-20, 02:11 PM
Replies: 8
Views: 301
Posted By JohnDThompson

Maybe that's why they're in a sculpture rather...

Maybe that's why they're in a sculpture rather than on the road? :innocent:
01-22-20, 01:55 PM
Replies: 2,038
Views: 181,544
Posted By JohnDThompson

ISO 0.833" (21.15mm) stem for 70s era Schwinn...

ISO 0.833" (21.15mm) stem for 70s era Schwinn Sports Tourer. Not too fussy about extension, 80-100mm ideally.

Have lots of vintage stuff: stems, pedals, chainrings, bottom brackets, etc. Let me...
01-22-20, 01:37 PM
Replies: 13
Views: 338
Posted By JohnDThompson

Unless you have clearance issues that call for a...

Unless you have clearance issues that call for a maximum tire width of 1", I'd go with a wider tire. The lower pressures required for a hookless rim make narrow tires more prone to pinch-flats. Go...
01-22-20, 01:21 PM
Replies: 14
Views: 308
Posted By JohnDThompson

What kind of riding do you do? Toe overlap...

What kind of riding do you do?

Toe overlap is only an issue at very low speeds and sharp cornering; most road riders never encounter situations where this would be an issue.

Technical, off-road...
01-21-20, 05:21 PM
Replies: 13
Views: 338
Posted By JohnDThompson

I run wire bead Paselas on hookless Weinmann...

I run wire bead Paselas on hookless Weinmann rims. I haven't had any problems, but I don't run them above 90psi.
01-21-20, 05:17 PM
Replies: 8
Views: 238
Posted By JohnDThompson

AFAIK, ETRTO doesn't make recommendations; they...

AFAIK, ETRTO doesn't make recommendations; they just define a uniform standard for designating bead seat diameter and rim width. Tire and rim manufacturers make recommendations on what dimensions...
01-21-20, 10:32 AM
Replies: 13
Views: 395
Posted By JohnDThompson

WalMart assemblers have neither the skill, nor...

WalMart assemblers have neither the skill, nor the tools, nor the time to open the bottom bracket and/or hubs, and/or headset to ensure sufficient grease is present.

That said, WalMart assemblers...
01-21-20, 10:22 AM
Replies: 9
Views: 317
Posted By JohnDThompson

Do the pedals on your older Nishikis use steel...

Do the pedals on your older Nishikis use steel rather than aluminum for the broken pieces?
01-20-20, 10:36 PM
Replies: 11
Views: 333
Posted By JohnDThompson

+1 on grinding worn tools back to square. If it...

+1 on grinding worn tools back to square. If it was a decent quality tool to start with, it will be hardened steel, and difficult to cut with e.g. a hacksaw or file; thus the need to grind.
01-20-20, 10:24 PM
Replies: 51
Views: 1,879
Posted By JohnDThompson

The VAR bead jack incorporates a tire lever for...

The VAR bead jack incorporates a tire lever for removing the tire with a bead jack to re-mount the tire in a single tool. It doesn't have the leverage of the Kool-Stop bead jack, but is more portable...
01-20-20, 10:18 PM
Replies: 25
Views: 347
Posted By JohnDThompson

Make certain you have the cable routed properly....

Make certain you have the cable routed properly. Improper routing can prevent the shifter from positioning the derailleur in the proper location.

What make and model derailleur are you using? Is...
01-20-20, 10:14 PM
Replies: 8
Views: 178
Posted By JohnDThompson

What specific derailleurs are you referring to...

What specific derailleurs are you referring to here? Side-to-side play in the guide (upper) pulley is a design feature with derailleurs intended for indexed shifting systems, where post-shift trim is...
01-20-20, 03:07 PM
Replies: 17
Views: 354
Posted By JohnDThompson

I suspect those gouges may be a result of not...

I suspect those gouges may be a result of not bothering to clean the swarf off the cutters between frames.
Forum: Framebuilders
01-20-20, 01:48 PM
Replies: 28
Views: 415
Posted By JohnDThompson

My recollection from the 753 days is that all the...

My recollection from the 753 days is that all the cold-working; butting, tapering, raking, etc., was done prior to the heat treatment.
01-20-20, 01:34 PM
Replies: 23
Views: 379
Posted By JohnDThompson

None other than Yellow Jersey's Andy Muzi is on...

None other than Yellow Jersey's Andy Muzi is on record for the Svelto:

https://www.cyclingforums.com/threads/re-huret-jubile-deraileurs-any-good.144849/
01-19-20, 01:20 PM
Replies: 17
Views: 354
Posted By JohnDThompson

The V-shaped crown race was intended to be more...

The V-shaped crown race was intended to be more durable than a traditional parabolic race by providing two bearing tracks in the race to spread the wear. The problem with it was that it was very...
01-19-20, 09:16 AM
Replies: 33
Views: 474
Posted By JohnDThompson

Friction shifting shouldn't have a problem with a...

Friction shifting shouldn't have a problem with a 16T jump. A slight overshift to move the chain, followed by trim should become second nature with a little practice.
01-18-20, 09:27 PM
Replies: 33
Views: 474
Posted By JohnDThompson

Yes, you're right. But still, ramps and...

Yes, you're right.


But still, ramps and pins are really only an issue if you are using indexed front shifting. Are you?
01-18-20, 09:25 PM
Replies: 12
Views: 413
Posted By JohnDThompson

Looks nice. Not quite in the same league as a...

Looks nice. Not quite in the same league as a Trek 770, but still quite rideable.
01-18-20, 09:11 PM
Replies: 7
Views: 239
Posted By JohnDThompson

Yes, it's true. But there are at least two...

Yes, it's true.

But there are at least two complementary approaches to minimizing the risk of losing your bike:

1) Use the biggest, toughest, bad-a** chain and lock you can find.

2) Make...
Forum: Road Cycling
01-18-20, 02:45 PM
Replies: 19,119
Views: 3,920,771
Posted By JohnDThompson

And two sizes of spoke wrench. :thumb:

And two sizes of spoke wrench. :thumb:
01-18-20, 02:07 PM
Replies: 60
Views: 7,128
Posted By JohnDThompson

Modolo made their own version, the Kronos: ...

Modolo made their own version, the Kronos:

http://velobase.com/CompImages/Brakes/3098D9D0-7086-44FC-AB2F-127C13275B55.jpeg
VeloBase.com - Component: Modolo Kronos...
01-18-20, 01:41 PM
Replies: 16
Views: 354
Posted By JohnDThompson

Replace both cones, use new balls, and check the...

Replace both cones, use new balls, and check the dropout alignment as well.
01-16-20, 03:59 PM
Replies: 22
Views: 468
Posted By JohnDThompson

I mentioned the work-arounds in my previous...

I mentioned the work-arounds in my previous response: less aggressive tread, lower profile tires, and/or smaller radius wheels.

Anything else, you pays yer money and you takes yer chances.
01-16-20, 03:08 PM
Replies: 64
Views: 3,351
Posted By JohnDThompson

Nor me. If Cannondale wanted a prototype...

Nor me.

If Cannondale wanted a prototype built, they had plenty of competent welders in-house to build it.
01-16-20, 02:09 PM
Replies: 8
Views: 192
Posted By JohnDThompson

In principle, it would work, but only with a...

In principle, it would work, but only with a single gear. In order to use multiple gears, you need the derailleur to move the chain to the new gear and accommodate any change in chain length by...
01-14-20, 08:31 PM
Replies: 22
Views: 468
Posted By JohnDThompson

There is not a great deal of clearance, and the...

There is not a great deal of clearance, and the aggressive knobs on the tires will facilitate gravel pick-up that could jam between the tire and the mudguard. At a minimum, this will cause a lot of...
01-14-20, 07:52 PM
Replies: 8
Views: 192
Posted By JohnDThompson

Glue it on, and glue rivet heads in place for the...

Glue it on, and glue rivet heads in place for the authentic look.
01-14-20, 08:55 AM
Replies: 22,168
Views: 2,348,615
Posted By JohnDThompson

AFAIK, that's the only way to remove the cog from...

AFAIK, that's the only way to remove the cog from the driver. Sturmey-Archer actually recommended replacing the threaded drivers with splined drivers once the splined driver became available.


...
01-13-20, 04:59 PM
Replies: 22
Views: 508
Posted By JohnDThompson

Not with a fuel/air torch; it would take too long...

Not with a fuel/air torch; it would take too long to get up to temperature and cause extensive paint damage. To do it properly, you'll want fuel/oxygen and a high silver content rod. But before that,...
01-12-20, 03:28 PM
Replies: 9
Views: 388
Posted By JohnDThompson

Probably the main reason you don't seem wingnuts...

Probably the main reason you don't seem wingnuts on track hubs is that most velodrome do not allow wingnuts or quick releases in competition. If you really want a tool-free means to remove your...
01-12-20, 03:02 PM
Replies: 11
Views: 193
Posted By JohnDThompson

This begs the question: what freewheel do you...

This begs the question: what freewheel do you have? A Campagnolo freewheel is marked as such, and has a distinctive gold ring. It requires a unique remover with helical prongs. Don't try anything...
01-11-20, 03:26 PM
Replies: 9
Views: 208
Posted By JohnDThompson

I've used A'me Modolo-copy hoods on mod. 77...

I've used A'me Modolo-copy hoods on mod. 77 levers. Since the Modolo hoods interchange with Campagnolo, I suspect any generic Campagnolo repop hood would work.

http://www.os2.dhs.org/~john/ame.jpg
Forum: Road Cycling
01-09-20, 04:53 PM
Replies: 9
Views: 269
Posted By JohnDThompson

Since you're not using slotted cleats, something...

Since you're not using slotted cleats, something like the MKS "Urban Platform" pedal would likely work for you. They're based on the old Lyotard mod. 23 "Marcel Berthet" pedals, but modernized with...
01-09-20, 04:39 PM
Replies: 16
Views: 441
Posted By JohnDThompson

Depends. If the frame was built to use 27"...

Depends. If the frame was built to use 27" wheels, there are only a couple decent quality options for tires, Panaracer "Paselas" and Swift "Sand Canyon." If there are others, I'm not aware.

You...
01-09-20, 04:19 PM
Replies: 67
Views: 2,211
Posted By JohnDThompson

The Deke Slayton Memorial Space and Bicycle...

The Deke Slayton Memorial Space and Bicycle Museum in Sparta WI:

https://dekeslaytonmuseum.org/
01-09-20, 04:11 PM
Replies: 14
Views: 310
Posted By JohnDThompson

Nicely done. Have you ridden with it yet? My only...

Nicely done. Have you ridden with it yet? My only concern is if the chain catches on the triplizer mount when shifting between the middle and inner rings.

Re: Nervar crank BCD. 116mm was not the...
01-09-20, 03:21 PM
Replies: 20
Views: 441
Posted By JohnDThompson

When my kids were that age, I rode with them on a...

When my kids were that age, I rode with them on a tandem with a "kidback (https://www.sheldonbrown.com/tandkids.html)" attachment. One of the advantages is that it is connected to your drivetrain, so...
Showing results 1 to 50 of 1000
 


 
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