Search: Posts Made By: Ghrumpy
Showing results 1 to 50 of 793
Search took 0.14 seconds.
06-25-18, 01:13 PM
Replies: 26
Views: 1,043
Posted By Ghrumpy

"Much better" than what? "Better" is a...

"Much better" than what? "Better" is a comparative, so using it without a specific comparison doesn't make a meaningful point.

"Better" in one comparison will also be "worse" in another. So it...
06-25-18, 12:50 PM
Replies: 26
Views: 1,043
Posted By Ghrumpy

I assume the argument for that would be that 9...

I assume the argument for that would be that 9 balls, properly spaced, is sufficient to bear the calculated loads. I've seen BBs with fewer than 9 balls in BBs not intended for high-performance use....
06-21-18, 10:53 AM
Replies: 26
Views: 1,043
Posted By Ghrumpy

Sorry, late to the game, but Bike Rebel, your BB...

Sorry, late to the game, but Bike Rebel, your BB is clearly marked as Hatta brand, not Sugino. Hatta also make headsets, and are still in business serving mostly the Keirin and high-end track market....
06-18-18, 11:18 AM
Replies: 23
Views: 1,556
Posted By Ghrumpy

Good advice so far, especially not to skip holes...

Good advice so far, especially not to skip holes on the rim. But that's not what you were asking. Skipping holes on the hub isn't a structural problem. It's a length problem, as previously noted, and...
06-16-18, 12:17 PM
Replies: 4
Views: 371
Posted By Ghrumpy

First I would try to contact Focus directly. They...

First I would try to contact Focus directly. They should be able to help you.

If they can't help, I would consult the linked SHIS tutorial, I suspect it will get you pointed in the right...
06-16-18, 12:08 PM
Replies: 20
Views: 874
Posted By Ghrumpy

Nope. Almost all the ISO standards are ONLY...

Nope. Almost all the ISO standards are ONLY threading. Spoke nipple flats and BB taper are the only non-thread ISO standards that anyone cares about that I can think of off the top of my head.

The...
06-15-18, 11:43 AM
Replies: 20
Views: 874
Posted By Ghrumpy

Except it's flat wrong about so-called ISO...

Except it's flat wrong about so-called ISO headsets, as well as Professional. There is no such ISO dimensional standard. ISO refers to a thread form, not a crown race diameter.

Headset dimensions...
06-15-18, 11:06 AM
Replies: 23
Views: 839
Posted By Ghrumpy

Sure. To be more precise it's epicyclic fretting...

Sure. To be more precise it's epicyclic fretting precession we're talking about, and that's the only kind of precession that pertains to bicycles in a meaningful way.


That's a big if.

And...
06-15-18, 10:51 AM
Replies: 19
Views: 1,014
Posted By Ghrumpy

Rule 1 with old bikes, especially French ones:...

Rule 1 with old bikes, especially French ones: DON'T TOSS ANYTHING until you have verified that whatever part you have to replace it actually fits. And I mean by actual measurement first, and...
06-11-18, 06:12 PM
Replies: 28
Views: 1,290
Posted By Ghrumpy

I 100% agree with this. Freewheel bearings are...

I 100% agree with this. Freewheel bearings are like no other on the bike, because they only move when they have no load. So there's no need for grease or even heavy oils, they risk doing more harm...
06-07-18, 03:37 PM
Replies: 36
Views: 1,491
Posted By Ghrumpy

I mostly agree (I'm not yet a fan of super-low...

I mostly agree (I'm not yet a fan of super-low gearing, as long as my knees are holding up. I reserve the right to change my mind in ten years.) And I'm very glad you used the word "prefer" instead...
06-07-18, 02:48 PM
Replies: 22
Views: 946
Posted By Ghrumpy

He's totally correct about the properties. Seems...

He's totally correct about the properties. Seems counter-intuitive, but I wonder if the thermal contraction of the aluminum crankarm caused it to squeeze and thus slip down the taper a fraction of a...
06-07-18, 02:42 PM
Replies: 54
Views: 5,170
Posted By Ghrumpy

Sure, the 559 rim is the traditional mountain...

Sure, the 559 rim is the traditional mountain bike size. And 28mm is as close as need be to 1⅛" (it's usually rounded to 28.6mm.)
But the nominal fractional size is odd. Fractional width callouts on...
06-07-18, 02:23 PM
Replies: 13
Views: 468
Posted By Ghrumpy

They were not date-stamped. You have to go by...

They were not date-stamped. You have to go by visual cues. Here's a pretty exhaustive description of the variations and the years thereof.
Campagnolo front changers...
06-06-18, 05:53 PM
Replies: 266
Views: 14,302
Posted By Ghrumpy

T-Mar has it. The original "clincher" tires were...

T-Mar has it. The original "clincher" tires were much more like the "hook bead" type. But "wired-on" tires were developed at about the same time.
High-pressure wired-on rims are what were originally...
06-06-18, 05:32 PM
Replies: 13
Views: 468
Posted By Ghrumpy

The name of the groupset was Record in all...

The name of the groupset was Record in all catalogs except #17a (https://www.bikeforums.net/usertag.php?do=list&action=hash&hash=17a) (1975) and the Olympic (1982) catalog. In those two, it was...
06-06-18, 05:22 PM
Replies: 36
Views: 21,416
Posted By Ghrumpy

There are a few other variables in play, minor...

There are a few other variables in play, minor though they may be. Derailleur hanger length and BB drop (and possibly another one or two very small things, like the stop tang position and slot angle,...
06-06-18, 05:02 PM
Replies: 13
Views: 468
Posted By Ghrumpy

I agree. FWIW, strictly speaking there was...

I agree.

FWIW, strictly speaking there was never a "Nuovo" Record front derailleur (or brakes or cranks or hubs, for that matter.) It was always simply the Record (#1052/1) or the Super Record...
06-05-18, 03:17 PM
Replies: 54
Views: 5,170
Posted By Ghrumpy

For practical purposes, that was a redefinition...

For practical purposes, that was a redefinition that worked out nicely. The Imperial and US standards only had to be adjusted by a few millionths of an inch to meet that easy conversion factor. I'm...
06-05-18, 02:15 PM
Replies: 20
Views: 899
Posted By Ghrumpy

Both are fine, but I would say anti-seize is as...

Both are fine, but I would say anti-seize is as good if not better for many bicycle fasteners, because the fine thread pitches they have are specifically engineered to resist loosening by vibration...
06-05-18, 01:56 PM
Replies: 22
Views: 946
Posted By Ghrumpy

You're killing me man. You made it harder than...

You're killing me man. You made it harder than you need to. Since it's not your first stripped crank, let me suggest there's an error in your thinking and theory, not just your technique.

The...
06-01-18, 05:48 PM
Replies: 20
Views: 756
Posted By Ghrumpy

I posted them recently on another thread...

I posted them recently on another thread somewhere but couldn't find it. The second one is from the JIS bicycle manual.
06-01-18, 01:34 PM
Replies: 54
Views: 5,170
Posted By Ghrumpy

Forgive me, but I am going to push back on this....

Forgive me, but I am going to push back on this. You're basing your judgment on your way of understanding that you were brought up with. The Imperial system made perfect sense to those who were...
06-01-18, 12:12 PM
Replies: 20
Views: 899
Posted By Ghrumpy

Exactly. To put it even more generally, Moving...

Exactly. To put it even more generally,
Moving parts: Grease (or oil)
Non-moving parts: Anti-seize
06-01-18, 12:08 PM
Replies: 20
Views: 756
Posted By Ghrumpy

https://cimg3.ibsrv.net/gimg/bikeforums.net-vbulle...

https://cimg3.ibsrv.net/gimg/bikeforums.net-vbulletin/640x576/step_thru_french_resize_257b667dd70c5dde69afe0793cf61ece48c17f37.jpg...
05-29-18, 11:15 AM
Replies: 9
Views: 685
Posted By Ghrumpy

The solution might be to change the direction of...

The solution might be to change the direction of the wrap. You should wrap the bars so that the hands' and wrists' natural twisting forces will tighten the tape.

Problem is, the natural twisting...
05-27-18, 02:38 PM
Replies: 16
Views: 713
Posted By Ghrumpy

I totally agree with both points. Surlys aren't...

I totally agree with both points.
Surlys aren't fragile. The frame can probably handle being corrected as long as the original bend didn't cause a crease or crack.
But it was the seller's fault...
05-27-18, 02:32 PM
Replies: 19
Views: 601
Posted By Ghrumpy

I agree. Lunacy for one more inch of standover....

I agree. Lunacy for one more inch of standover. Even if you needed more than an inch, it would be easier and faster to build a new frame from scratch.
05-25-18, 02:16 PM
Replies: 18
Views: 720
Posted By Ghrumpy

Excellent!

Excellent!
05-25-18, 02:15 PM
Replies: 3
Views: 348
Posted By Ghrumpy

Should be flush, or close to it. Did you put the...

Should be flush, or close to it. Did you put the compression cone on the right way? Or if you did, it might not be fully seated.
05-25-18, 11:38 AM
Replies: 6
Views: 273
Posted By Ghrumpy

Thanks, that was quick. You started at the...

Thanks, that was quick.

You started at the max, and this cassette puts you a little over. The SGS cage has a total capacity of 45t, with that cassette you're at 46t. It has a max chainring...
05-25-18, 11:25 AM
Replies: 11
Views: 463
Posted By Ghrumpy

Yes, plastic spacers are usually too soft to...

Yes, plastic spacers are usually too soft to prevent bending. They're more for helping prevent the rear end from being squeezed together.
One good way to prevent this sort of damage is to use an...
05-25-18, 11:19 AM
Replies: 6
Views: 273
Posted By Ghrumpy

Can't help you specifically, but generally...

Can't help you specifically, but generally speaking, "cheating" a bigger cog than a derailleur is rated for requires you to factor in the total capacity rating and whether your gear combinations are...
05-24-18, 04:19 PM
Replies: 54
Views: 5,170
Posted By Ghrumpy

Yes all those rim BSDs are for 26"/650 wheels and...

Yes all those rim BSDs are for 26"/650 wheels and tires. Could be any of them, all were used fairly commonly until maybe 30 years ago. Then 571 (650C) became a racing rim size (because it matches to...
05-24-18, 04:10 PM
Replies: 7
Views: 1,271
Posted By Ghrumpy

By the way, VIA stands for the Japanese Vehicle...

By the way, VIA stands for the Japanese Vehicle Inspection Association. You'll see that stamped on all sorts of things on cars and bikes.
Outline of VIA?JAPAN VEHICLE INSPECTION ASSOCIATION (VIA)...
05-24-18, 02:21 PM
Replies: 54
Views: 5,170
Posted By Ghrumpy

It doesn't work that way now, but that is exactly...

It doesn't work that way now, but that is exactly how the original system worked. I didn't "pull an inch size that just happened to come out." I used the original 19th century clincher tire sizing...
05-24-18, 01:58 PM
Replies: 54
Views: 5,170
Posted By Ghrumpy

Basically correct, but the French didn't really...

Basically correct, but the French didn't really try to make their wheels work out to 700mm in diameter, that was just a nice round number close enough to 28". They were making tires to sell in...
05-24-18, 01:28 PM
Replies: 63
Views: 2,693
Posted By Ghrumpy

This is a really important point that should not...

This is a really important point that should not be glossed over. I admit I responded to the straw-man quote that the "hub stands on its spokes" as if that were something that Brandt said, which he...
05-23-18, 06:13 PM
Replies: 54
Views: 5,170
Posted By Ghrumpy

Not sure if this helps or not, but the metric...

Not sure if this helps or not, but the metric measurements are basically just an overlay on the original inch sizes. Problem is, the inch sizes referred to an outside diameter of a wheel and tire...
05-23-18, 03:38 PM
Replies: 63
Views: 2,693
Posted By Ghrumpy

What is this, the "Argument Clinic"? It's funny...

What is this, the "Argument Clinic"? It's funny when Monty Python does it, but that's because it's SATIRE.

I said the hub neither hangs from nor stands on its spokes. If you can't bother to...
05-23-18, 03:30 PM
Replies: 12
Views: 506
Posted By Ghrumpy

A 6-speed setup is not necessarily better quality...

A 6-speed setup is not necessarily better quality than a 5-speed. It just goes to 6. Quality is a matter entirely unrelated to how many cogs it has.


The shift quality may have as much to do with...
05-23-18, 03:13 PM
Replies: 1
Views: 234
Posted By Ghrumpy

Don't have any particular experience with that...

Don't have any particular experience with that bike but I can't imagine why it would be anything but ISO/BSC, 68mm shell. Only Italians use Italian thread any more, and not even all of them.
05-23-18, 10:58 AM
Replies: 29
Views: 1,497
Posted By Ghrumpy

The answer is don't worry too much about it....

The answer is don't worry too much about it. Given that practically any bearing grease will be more than functionally adequate, I recommend factoring in other considerations such as color (as dyed...
05-23-18, 10:43 AM
Replies: 63
Views: 2,693
Posted By Ghrumpy

I know what he said, I have the book sitting...

I know what he said, I have the book sitting right next to me. And I agree that he could hardly admit to be wrong. That's indeed the unfortunate part of his legacy. We're not bound by that though.
...
05-22-18, 04:06 PM
Replies: 63
Views: 2,693
Posted By Ghrumpy

Aye, there's the rub.... The "hub stands on...

Aye, there's the rub....

The "hub stands on its spokes" thing is a headline which he immediately qualifies. It's also kind of metaphorical, but his explanation is lacking, IMO.
A...
05-22-18, 03:49 PM
Replies: 5
Views: 286
Posted By Ghrumpy

853 is thin-wall, heat-treated, really hard...

853 is thin-wall, heat-treated, really hard stuff, and does not particularly like to be cold-set. In other words, it will put up a fight.

If you decide to do this, I'd recommend trying to focus...
05-22-18, 03:43 PM
Replies: 25
Views: 1,162
Posted By Ghrumpy

FMB and Dugast have always made tan-wall...

FMB and Dugast have always made tan-wall tires,which kind of makes them stand out among the crowd.
05-22-18, 03:38 PM
Replies: 4
Views: 303
Posted By Ghrumpy

Yeah, Trek didn't buy Bontrager until 1995. ...

Yeah, Trek didn't buy Bontrager until 1995.

That cover could be re-glued on, but unless you really love the saddle, don't bother. Gel saddles tend to either get rock-hard or fall apart after...
05-22-18, 03:33 PM
Replies: 21
Views: 1,125
Posted By Ghrumpy

Dig that Benelux rack-and-pinion front...

Dig that Benelux rack-and-pinion front derailleur. With self-trimming action! Don't take that off.
05-22-18, 12:46 PM
Replies: 63
Views: 2,693
Posted By Ghrumpy

Agree. Nor is it good logic to assume that he was...

Agree. Nor is it good logic to assume that he was right because he gets quoted more on the internet than others. Nor is it good logic to assume that he was always right merely because he occasionally...
Showing results 1 to 50 of 793
 


 
Forum Jump

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.