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Search: Posts Made By: Duragrouch
Showing results 1 to 50 of 1000
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Forum: Touring
06-09-24, 04:55 AM
Replies: 22
Views: 379
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: 22
Views: 379
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: 1
Views: 90
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: 6
Views: 205
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: 9
Views: 351
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: 9
Views: 311
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: 328
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: 321
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: 34
Views: 796
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: 680
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: 1,947
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: 328
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: 9
Views: 351
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: 173
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: 680
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: 1,788
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: 328
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: 1,788
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: 56
Views: 1,488
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: 680
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: 1,788
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: 1,788
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: 132
Views: 3,375
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: 34
Views: 796
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: 173
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: 132
Views: 3,375
Posted By Duragrouch

The corrupt depend on inaction. And ignorance.

The corrupt depend on inaction. And ignorance.
Forum: Bicycle Mechanics
06-07-24, 12:11 AM
Replies: 38
Views: 973
Posted By Duragrouch

OP: In case you love internal gear hubs, many...

OP: In case you love internal gear hubs, many newer ones now have a rotary shifter coaxial with the hub, mounted inside the frame dropout, and that is much more resistant to drop damage, I'm sure...
Forum: Road Cycling
06-07-24, 12:02 AM
Replies: 28
Views: 680
Posted By Duragrouch

The specifics: Derailleur shifting under high...

The specifics: Derailleur shifting under high chain tension is bad; The chain is angled during the shift, so instead of distributing the load fairly equally on plates on both sides, where the chain...
Forum: Classic & Vintage
06-06-24, 11:31 PM
Replies: 54
Views: 1,788
Posted By Duragrouch

OK, so there are steels I have seen that rust a...

OK, so there are steels I have seen that rust a certain amount and then stop or slow way down, used widely on architecture in the 1970s, less so now I think. I don't know if the steel was special or...
Forum: Road Cycling
06-06-24, 11:07 PM
Replies: 132
Views: 3,375
Posted By Duragrouch

I think an overreaction by police, based on the...

I think an overreaction by police, based on the offense, and him not streaking naked but trying to change between cars.

From what I find online, the race event was in KS, not OK, but race...
Forum: Bicycle Mechanics
06-06-24, 10:46 PM
Replies: 56
Views: 1,488
Posted By Duragrouch

On another thread (steel frame corrosion, someone...

On another thread (steel frame corrosion, someone thought chrome-moly has adequate corrosion resistance), I posted a link helping explain chrome's contribution and quantities required. Incredible...
Forum: Classic & Vintage
06-06-24, 10:12 PM
Replies: 54
Views: 1,788
Posted By Duragrouch

I regret to say (as I own frames with such) 4130...

I regret to say (as I own frames with such) 4130 chrome moly has nowhere near enough alloys to prevent rust. It rusts like mad if countermeasures are not taken. The main corrosion resisting alloy is...
Forum: Bicycle Mechanics
06-06-24, 09:43 PM
Replies: 56
Views: 1,488
Posted By Duragrouch

Thank you for the input, as requested. Agreed......

Thank you for the input, as requested. Agreed... sort of. I usually associate "stretch" and "elongation" with permanent deformation, which is why I actually try to avoid those terms (perhaps...
Forum: Folding Bikes
06-06-24, 08:46 PM
Replies: 51
Views: 1,654
Posted By Duragrouch

Thank you, you're right, I did forget about that...

Thank you, you're right, I did forget about that (and as I was writing I thought I had remembered 400% (not claimed but gear inch range close to my 21-85), but looked up BWR and found 300%, I had...
Forum: Folding Bikes
06-06-24, 07:48 PM
Replies: 30
Views: 1,947
Posted By Duragrouch

Mine just might take larger than 2.0. But that...

Mine just might take larger than 2.0. But that looks plenty big enough for me for on-highway, and even then, standard mudguards would not fit, I'd need to rig something non-standard. Around town,...
Forum: Bicycle Mechanics
06-06-24, 07:35 PM
Replies: 48
Views: 10,209
Posted By Duragrouch

Thanks for checking that, appreciated. Yeah,...

Thanks for checking that, appreciated. Yeah, that's what the picture and diagram looked like, but I allowed that my perception of the picture might be off, and the diagram not fully accurate. With...
Forum: Bicycle Mechanics
06-06-24, 06:38 PM
Replies: 56
Views: 1,488
Posted By Duragrouch

All of the above, from several contributers, is...

All of the above, from several contributers, is true. But no one has mentioned spoke stiffness/elasticity (versus stress); Butted spokes, thinner in the middle, are more elastic, and the thicker ends...
Forum: Folding Bikes
06-06-24, 05:59 PM
Replies: 30
Views: 1,947
Posted By Duragrouch

You're correct, of course. 406 at least, has...

You're correct, of course.

406 at least, has the option of 1.75 and often 2.0 in terms of clearance. 349, very often, not. Not what a brommie is designed for. Yet, many rave about it touring. But...
Forum: Bicycle Mechanics
06-06-24, 04:24 AM
Replies: 29
Views: 1,221
Posted By Duragrouch

This is an area that I never trust the...

This is an area that I never trust the manufacturer, and the bike shops don't have the time to check this on every bike they sell. Even if brand new bike, first thing I do is open up the bearings...
Forum: Bicycle Mechanics
06-06-24, 03:59 AM
Replies: 8
Views: 299
Posted By Duragrouch

Yes, chain should be lubed periodically, my clue...

Yes, chain should be lubed periodically, my clue is when the lube oil becomes pasty from suspended metal dust in it. However if you want a cleaner lube, there are tomes of data and threads on here...
Forum: Bicycle Mechanics
06-06-24, 03:44 AM
Replies: 5
Views: 130
Posted By Duragrouch

I'll be damned. That is slick. Good MacGyver. ...

I'll be damned. That is slick. Good MacGyver.

I had that experience, replacing the junk bearings and wheels on a good piece of carryon luggage (roller), with quality inline skate wheels and...
Forum: Bicycle Mechanics
06-06-24, 03:23 AM
Replies: 16
Views: 404
Posted By Duragrouch

Intermittent problem, not continuous. Hmm. ...

Intermittent problem, not continuous. Hmm.

If none of the above, check for excessive lateral play of freehub body, by trying to wiggle largest cog laterally. A small amount of play is normal. Also...
Forum: Bicycle Mechanics
06-06-24, 03:00 AM
Replies: 22
Views: 491
Posted By Duragrouch

Spacers: Curiously, when I decided to space my BB...

Spacers: Curiously, when I decided to space my BB out 4mm, I had some spacers I had bought once to space the cassette out (decided against, due to greatly reduced lockring thread depth), and I'll be...
Forum: Folding Bikes
06-06-24, 02:29 AM
Replies: 1
Views: 168
Posted By Duragrouch

I don't know Schwinns, but sounds rare. I don't...

I don't know Schwinns, but sounds rare. I don't see where (if) the frame folds. I see big levers to allow easy lowering of seat, and I think inversion or removal of handlebars, so greatly reduced...
Forum: Folding Bikes
06-06-24, 02:18 AM
Replies: 9
Views: 351
Posted By Duragrouch

I agree with above. At first I thought they were...

I agree with above. At first I thought they were "gray market" Dahons imported from another country, sometimes the same model name as in USA but lower level frame and parts, so it can get confusing....
Forum: Folding Bikes
06-06-24, 01:41 AM
Replies: 9
Views: 328
Posted By Duragrouch

Some Dahon telescoping handleposts were subject...

Some Dahon telescoping handleposts were subject to a recall. You should check online, there are clues for that in terms of serial number and looking for a letter on the post when unfolded. Warning:...
Forum: Folding Bikes
06-06-24, 01:27 AM
Replies: 3
Views: 184
Posted By Duragrouch

I topped out my bike computer at 65 kph (about 40...

I topped out my bike computer at 65 kph (about 40 mph) on a mild downgrade pedaling hard on the aeros of my 700c racer in top gear decades ago. I've only recently learned about speed wobble, but I...
Forum: Folding Bikes
06-06-24, 01:08 AM
Replies: 4
Views: 177
Posted By Duragrouch

I agree with above. Regarding tubes, with 1.75,...

I agree with above. Regarding tubes, with 1.75, you usually have a choice of 1.5-1.75 and 1.75-2.0, I choose the latter, the tube is stretching a bit less when inflated, I think a bit better for...
Forum: Folding Bikes
06-06-24, 12:50 AM
Replies: 30
Views: 1,947
Posted By Duragrouch

Schwinnsta posted the following link on another...

Schwinnsta posted the following link on another thread, an example of touring on a Brompton:

https://www.clevercycles.com/blogs/news-and-events/down-the-pacific-coast-by-brompton/
Forum: Folding Bikes
06-06-24, 12:29 AM
Replies: 51
Views: 1,654
Posted By Duragrouch

Yeah, swinging triangles that "latch" up top, I...

Yeah, swinging triangles that "latch" up top, I think would be fixed lateral, but perhaps not in moment, but that only would matter if analyzing the seatstays; For purposes of the triangle lateral...
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