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Search: Posts Made By: Duragrouch
Showing results 1 to 50 of 1000
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Forum: Bicycle Mechanics
06-10-24, 05:58 AM
Replies: 79
Views: 3,453
Posted By Duragrouch

Oh I agree, electronic does mesh with having a...

Oh I agree, electronic does mesh with having a record of things. It's just... a very digital system controlling and tracking a very analog one. It's like having a joystick and electric servos to move...
Forum: Bicycle Mechanics
06-10-24, 03:09 AM
Replies: 79
Views: 3,453
Posted By Duragrouch

Seems a bit incongruous to have a system of...

Seems a bit incongruous to have a system of electronic shift controls AND automatic statistics, for a system that essentially throws the chain from one sprocket to another, like a late nineteenth...
Forum: Folding Bikes
06-10-24, 02:36 AM
Replies: 49
Views: 3,848
Posted By Duragrouch

Sounds good. I have some dacron sailing line I...

Sounds good. I have some dacron sailing line I got a good deal on, I thought was double-braid but discovered the core is linear; That's better for less stretch, I just can't do running eye splices...
Forum: Bicycle Mechanics
06-10-24, 02:29 AM
Replies: 79
Views: 3,453
Posted By Duragrouch

Cross-chaining: If you mean constant switching of...

Cross-chaining: If you mean constant switching of chainrings, I think it depends on where the border gears sit in the range. Right now, the 2X conversion on my folder, 21-85 gear inches, is about the...
Forum: Classic and Vintage Sales
06-10-24, 02:12 AM
Replies: 11
Views: 337
Posted By Duragrouch

Ah, ok, thanks. That would make sense for a...

Ah, ok, thanks. That would make sense for a freewheel, just more axle sticking out the left, I think. And I don't think less lateral strength on the wheel, it just means the non-drive-side spokes are...
Forum: Mountain Biking
06-10-24, 01:48 AM
Replies: 5
Views: 144
Posted By Duragrouch

Gosh I'm not a mountain biker, just trying to...

Gosh I'm not a mountain biker, just trying to think through the physics of this.

Going slower is inherently less stable:
- less gyroscopic inertia of the wheels
- less centering force on...
Forum: Bicycle Mechanics
06-10-24, 12:26 AM
Replies: 7
Views: 1,777
Posted By Duragrouch

To all, the zombie of tapers past, present, and...

To all, the zombie of tapers past, present, and the zombie of tapers yet to come: Sheldon Brown website has a very good article on the subject, even showing which mismatches are possible, and which...
Forum: Bicycle Mechanics
06-10-24, 12:17 AM
Replies: 8
Views: 197
Posted By Duragrouch

How sugared is your coffee?

How sugared is your coffee?
Forum: Classic and Vintage Sales
06-10-24, 12:15 AM
Replies: 11
Views: 337
Posted By Duragrouch

It's deja vu all over again. Same bike in 54 in...

It's deja vu all over again. Same bike in 54 in another thread.

Says rear wheel dishless; Does this mean zero spoke dish, thus frame is not symmetrical, and right dropout extends out further from...
Forum: Folding Bikes
06-10-24, 12:01 AM
Replies: 9
Views: 319
Posted By Duragrouch

Well, yes, that's a given. The problem isn't that...

Well, yes, that's a given. The problem isn't that per se, but that it has no low gears. Even a road triple with relatively wide road cassette was not low enough for my LWB 'bent when tour-loaded...
Forum: Classic & Vintage
06-09-24, 11:44 PM
Replies: 7
Views: 166
Posted By Duragrouch

Super classic look, I like. I'm not into C&V, I...

Super classic look, I like. I'm not into C&V, I just like classic looks in frame and crank, whatever the age.

Immaculate condition!

I noticed the bonded lug look, I thought perhaps early...
Forum: Folding Bikes
06-09-24, 11:30 PM
Replies: 9
Views: 319
Posted By Duragrouch

I saw a pic of that in another thread, B&W pic of...

I saw a pic of that in another thread, B&W pic of it being ridden, and was fascinated by its compactness without folding. Asked what bike but got no reply. Obviously the front wheel has pothole...
Forum: Bicycle Mechanics
06-09-24, 11:22 PM
Replies: 79
Views: 3,453
Posted By Duragrouch

I agree, that was my first thought, next step in...

I agree, that was my first thought, next step in lower gearage, unless they mind the spacing.

I can attest to that Tourney, and works surprisingly well for a $13 new RD. It was just the only one...
Forum: Bicycle Mechanics
06-09-24, 11:01 PM
Replies: 63
Views: 1,745
Posted By Duragrouch

I agree. Drawn spokes are not as hard or as...

I agree. Drawn spokes are not as hard or as strong as piano wire. But they have hardened and strengthened significantly (multiples) over their original un-cold-worked base material strength.

One...
Forum: Bicycle Mechanics
06-09-24, 08:44 PM
Replies: 63
Views: 1,745
Posted By Duragrouch

First, I'm not certain, not at all. But again, I...

First, I'm not certain, not at all. But again, I thought that spokes were stronger, not due to "hardening agents" as you say (which I do understand), but rather due to work hardening, which I think...
Forum: Living Car Free
06-09-24, 08:33 PM
Replies: 37
Views: 3,552
Posted By Duragrouch

New tunnel is in progress due to the Biden...

New tunnel is in progress due to the Biden administration:

https://www.bloomberg.com/news/articles/2023-08-10/gateway-tunnel-about-to-hit-big-milestone-shovels-in-the-ground

Space to park 600...
Forum: Bicycle Mechanics
06-09-24, 08:15 PM
Replies: 79
Views: 3,453
Posted By Duragrouch

Sounds good! If the chain doesn't skip under high...

Sounds good! If the chain doesn't skip under high load climbing, cassette may be fine. But if cassette is worn, you may want to replace soon to reduce wear on chain and then same on your nice new...
Forum: Living Car Free
06-09-24, 07:51 PM
Replies: 37
Views: 3,552
Posted By Duragrouch

Yeah me too, my walking distance is limited. But...

Yeah me too, my walking distance is limited. But I can bike 25 miles at the drop of a hat, zero prep, 50 back in the day, and more with prep. I'm deeply thankful that local stores let me wheel my...
Forum: Bicycle Mechanics
06-09-24, 07:46 PM
Replies: 63
Views: 1,745
Posted By Duragrouch

Apologies, I'm the offender on this that got it...

Apologies, I'm the offender on this that got it going in this direction.



I don't know for certain, but I think spokes may be fairly strong steel, not due to alloys, but from work hardening due...
Forum: Living Car Free
06-09-24, 07:01 PM
Replies: 37
Views: 3,552
Posted By Duragrouch

For Paris, or NYC? Here in the USA, the rental...

For Paris, or NYC? Here in the USA, the rental bikes are all stepover frames but strong and designed for minimal maintenance, many have hard foam in the tires and not air tubes. I've never rode them,...
Forum: Folding Bikes
06-09-24, 06:27 PM
Replies: 49
Views: 3,848
Posted By Duragrouch

Fantastic. Almost a year on mine and zero...

Fantastic. Almost a year on mine and zero loosening of the knot (8-bend) nor stretch of the line (kevlar, measures 1/8" diameter when stretched, a large loop so 2 strands of tension). Each ride I...
Forum: Touring
06-09-24, 06:09 PM
Replies: 28
Views: 588
Posted By Duragrouch

I've never priced the stuff. Big issue I think in...

I've never priced the stuff. Big issue I think in my state is big liquor taxes. Otherwise, given that white gas zoomed up to between $15-20 a gallon (and much higher if buying by the quart) and never...
Forum: Touring
06-09-24, 05:46 PM
Replies: 5
Views: 264
Posted By Duragrouch

(above) Yeah it looked to me like the road was...

(above) Yeah it looked to me like the road was built on fill, well above grade, for both lower slope and drainage. That can be fine, as long as the downlope angle of repose is sufficient to be stable...
Forum: Touring
06-09-24, 05:38 PM
Replies: 28
Views: 588
Posted By Duragrouch

Ah, good tip, that would be ethanol. Might find...

Ah, good tip, that would be ethanol. Might find same as "denatured alcohol" which according to wiki is "... and denatured rectified spirit (https://en.m.wikipedia.org/wiki/Rectified_spirit) is...
Forum: Touring
06-09-24, 04:55 AM
Replies: 28
Views: 588
Posted By Duragrouch

Well, not really, as MSR stoves are designed to...

Well, not really, as MSR stoves are designed to burn a big variety of petro and biofuels, *except* alcohol, as the air/fuel ratio is much different, more like 8:1 versus 14.7:1 for gasoline/petrol. A...
Forum: Touring
06-09-24, 04:49 AM
Replies: 28
Views: 588
Posted By Duragrouch

Looking up, my guess is you are using HEET...

Looking up, my guess is you are using HEET product that removes water from gasoline (aka "dry gas") that used to be methanol but I think now is isopropyl alcohol? DON'T use a typical HDPE Nalgene...
Forum: Touring
06-09-24, 04:11 AM
Replies: 5
Views: 264
Posted By Duragrouch

If it's the video I saw in headlines today, the...

If it's the video I saw in headlines today, the landslide didn't cover the road (which could be cleared), it was from under the road which completely dropped away. I hope nobody hurt or killed. Much...
Forum: Folding Bikes
06-09-24, 03:51 AM
Replies: 9
Views: 319
Posted By Duragrouch

Sakai... one of two major centers of quality...

Sakai... one of two major centers of quality knife production in Japan (the other being Seki), as I understand it. Hmm, both that and the Shimano museum, that would be a great city tour for me, if...
Forum: Folding Bikes
06-09-24, 03:15 AM
Replies: 10
Views: 404
Posted By Duragrouch

Mines 20", just your garden-variety Speed before...

Mines 20", just your garden-variety Speed before I equipped it like a Bike Friday. The original racks are perfectly solid, and can hold something on top, just too far forward for heel clearance with...
Forum: For Sale
06-09-24, 01:38 AM
Replies: 10
Views: 396
Posted By Duragrouch

I don't have the bandwidth to currently do C&V,...

I don't have the bandwidth to currently do C&V, but this turns my crank on so many levels; Lugged frame with double-butted chrome moly, beautiful crank styling, half-step+granny, nice color, even...
Forum: Folding Bikes
06-09-24, 01:14 AM
Replies: 9
Views: 362
Posted By Duragrouch

Hey Ron (or anyone else), I was looking online at...

Hey Ron (or anyone else), I was looking online at various handleposts and ran across this diagram, referencing a Dahon Radius V Comfort lower handlepost 09; Have you ever seen this and know how it...
Forum: Classic & Vintage
06-08-24, 11:58 PM
Replies: 7
Views: 400
Posted By Duragrouch

Does it ride nice (more cush) while still being...

Does it ride nice (more cush) while still being stiff in torsion when hammering the pedals?
Forum: Bicycle Mechanics
06-08-24, 10:56 PM
Replies: 35
Views: 956
Posted By Duragrouch

+1. I got that joke/fact.

+1. I got that joke/fact.
Forum: Road Cycling
06-08-24, 10:44 PM
Replies: 28
Views: 736
Posted By Duragrouch

Like I said, I have a lame non-modern drivetrain....

Like I said, I have a lame non-modern drivetrain. But in general:
- downshift early; you can always upshift
- reef early; you can always unreef
- always be ahead of the power curve
- never get...
Forum: Folding Bikes
06-08-24, 10:15 PM
Replies: 30
Views: 2,006
Posted By Duragrouch

(above) Yep. Same with Litepro brompnots, the...

(above) Yep. Same with Litepro brompnots, the shipping kills it. Fortunately I don't need a different folder right now, but if I toured Asia, I'd fly there sans bike and bring one back.
Forum: Folding Bikes
06-08-24, 10:11 PM
Replies: 9
Views: 362
Posted By Duragrouch

(aliexpress above) Nice looking handleposts, I...

(aliexpress above) Nice looking handleposts, I like that they have one-piece ones, a bit more rigid and I think better in durability in the long run versus telescoping posts. Also nice, come in...
Forum: Folding Bikes
06-08-24, 01:21 AM
Replies: 10
Views: 404
Posted By Duragrouch

I wish you were local to me so I could give you...

I wish you were local to me so I could give you the low rear rack that came off my Dahon Speed, I needed to install a typical (large-wheel-bike) "high" rear rack, both to hold full size panniers high...
Forum: Folding Bikes
06-08-24, 01:08 AM
Replies: 3
Views: 181
Posted By Duragrouch

(above) I retrofit my Dahon Speed for 50/34 front...

(above) I retrofit my Dahon Speed for 50/34 front with added derailleur, replaced the (terrible) dahon compact rear derailleur with a medium (GS) cage one installed in "normal" location to handle the...
Forum: Road Cycling
06-08-24, 12:58 AM
Replies: 28
Views: 736
Posted By Duragrouch

That's a good explanation, better than my own...

That's a good explanation, better than my own points about hyperglide. This may also explain, crunching on mine if I try to shift under high load; I still have the original Dahon cassette on my...
Forum: Classic & Vintage
06-08-24, 12:04 AM
Replies: 54
Views: 1,914
Posted By Duragrouch

Oh yeah, I had at least a couple of those in...

Oh yeah, I had at least a couple of those in mind. And as long as the product is good, the company does well. On the other hand, when the parent company tanks, like when they expand too quickly, it...
Forum: Folding Bikes
06-07-24, 10:24 PM
Replies: 9
Views: 362
Posted By Duragrouch

Stem recall details, easy to check: ...

Stem recall details, easy to check:

https://www.cpsc.gov/Recalls/2009/dahon-and-rei-novara-folding-bicycles-recalled-due-to-fall-hazard
Forum: Classic & Vintage
06-07-24, 10:20 PM
Replies: 54
Views: 1,914
Posted By Duragrouch

Thanks. I just find it weird, a bike store only a...

Thanks. I just find it weird, a bike store only a selling one brand. But I can see advantages for Trek. Sometimes that's worked for some manufacturers of things, sometimes not, and sometimes makers...
Forum: Bicycle Mechanics
06-07-24, 10:03 PM
Replies: 63
Views: 1,745
Posted By Duragrouch

Wow, that is quite brittle. Mine wasn't...

Wow, that is quite brittle.

Mine wasn't that, but I had sharpened the blade to close to 10 degrees per side, like a good Japanese vegetable knife, it just glides through hard veggies like raw yams...
Forum: Road Cycling
06-07-24, 09:35 PM
Replies: 28
Views: 736
Posted By Duragrouch

Good point. That's making me think.... You still...

Good point. That's making me think.... You still hear bad sounds when trying to shift rear when hammering on the pedals standing; The shift "begins" on the bottom (6 o'clock) position of the cogs;...
Forum: Classic & Vintage
06-07-24, 05:18 AM
Replies: 54
Views: 1,914
Posted By Duragrouch

Well that explains me never seeing trek at my...

Well that explains me never seeing trek at my LBS, which is an outstanding place that has a huge selection of used components on one side of the place, and new bikes on the other. The last trek 520 I...
Forum: Classic & Vintage
06-07-24, 02:23 AM
Replies: 54
Views: 1,914
Posted By Duragrouch

Wait... Trek has their own bike shops that sell...

Wait... Trek has their own bike shops that sell nothing but Trek? And are they exclusive, or can other shops still stock Trek?
Forum: Road Cycling
06-07-24, 01:55 AM
Replies: 152
Views: 4,347
Posted By Duragrouch

I understand, but... arrest and jail time?...

I understand, but... arrest and jail time? Clearly they are bikers changing, and that is less threat to the public than many traffic infractions, which are a citation, no arrest.

But these are...
Forum: Bicycle Mechanics
06-07-24, 01:38 AM
Replies: 35
Views: 956
Posted By Duragrouch

Yes I reuse tubes. Covered cold metal handle on...

Yes I reuse tubes. Covered cold metal handle on climbing axe. Other handle stuff. Rubber bands. Sans valve, inside my tires as zero cost anti-flat strips between new tube and tire. Around cam-strap...
Forum: Folding Bikes
06-07-24, 01:17 AM
Replies: 3
Views: 181
Posted By Duragrouch

Welcome to the Folding World! It can get cramped...

Welcome to the Folding World! It can get cramped when someone folds us up without permission, sorta like the opposite of falling off the edge of Discworld.

I had been on the forum very scarcely...
Forum: Road Cycling
06-07-24, 01:03 AM
Replies: 152
Views: 4,347
Posted By Duragrouch

The corrupt depend on inaction. And ignorance.

The corrupt depend on inaction. And ignorance.
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