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Search: Posts Made By: Duragrouch
Showing results 1 to 50 of 1000
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Forum: Commuting
04-25-24, 02:47 AM
Replies: 3
Views: 238
Posted By Duragrouch

Beat me to it. Amtrak regs says can go in normal...

Beat me to it. Amtrak regs says can go in normal luggage racks in passenger car, no bike fee. I could have stood it up if needed, I'd brought a big black garbage bag in case of that (bifold bike,...
Forum: Bicycle Mechanics
04-25-24, 12:49 AM
Replies: 8
Views: 172
Posted By Duragrouch

Noodle suggestion sounds brilliant.

Noodle suggestion sounds brilliant.
Forum: Folding Bikes
04-25-24, 12:00 AM
Replies: 9
Views: 302
Posted By Duragrouch

There's something incongruous about seeing a...

There's something incongruous about seeing a Brompton on a trainer. Maybe because of differing purposes. But also, I'd worry about putting excess torsional loads into the rear triangle pivot, as the...
Forum: Touring
04-24-24, 11:49 PM
Replies: 70
Views: 5,957
Posted By Duragrouch

Plus it may help bring back level top tubes, more...

Plus it may help bring back level top tubes, more frame bag space.

I do have to admit, for my race bike with no rack braze-ons, I used a seatpost beam rack, but a frame bag would have been nice...
Forum: Bicycle Mechanics
04-24-24, 11:41 PM
Replies: 6
Views: 190
Posted By Duragrouch

I would agree that factory grease is good. But...

I would agree that factory grease is good. But that requires disassembly, and 50 years ago, that involved an incredibly large Proto adjustable wrench (like for bolting together skyscapers), like 2 or...
Forum: Bicycle Mechanics
04-24-24, 11:32 PM
Replies: 20
Views: 560
Posted By Duragrouch

(above) I agree, and that is one of the pluses of...

(above) I agree, and that is one of the pluses of buying through amazon, they tend to enforce that kind of thing. Try the seller first; While some retail sellers would point you to the manufacturer...
Forum: Commuting
04-24-24, 11:20 PM
Replies: 208
Views: 9,499
Posted By Duragrouch

You should go look on the R&M website. Their...

You should go look on the R&M website. Their regular (rigid) cargo bikes come in two different lengths on the cargo area (60 and 75cm), and then there's the suspension bike you see there, which, also...
Forum: Commuting
04-24-24, 09:36 PM
Replies: 208
Views: 9,499
Posted By Duragrouch

Depends if you want to food shop on the way home...

Depends if you want to food shop on the way home from work, that's where racks and panniers are awesome.

Only thing I don't like about that huge basket bike is that the wheels are too close to...
Forum: Bicycle Mechanics
04-24-24, 09:15 PM
Replies: 20
Views: 560
Posted By Duragrouch

Awesome! Glad it was the least serious issue in...

Awesome! Glad it was the least serious issue in terms of parts and labor. Plus it's an improvement, 11T really helps if you are on 20" wheels.
Forum: Bicycle Mechanics
04-24-24, 09:00 PM
Replies: 61
Views: 1,498
Posted By Duragrouch

I like that, I ran the numbers, fewer duplicate...

I like that, I ran the numbers, fewer duplicate gears in the middle, great gear range 500% without big jumps at the cogs. That's good news for me. If I need a higher high from my current 85 gear inch...
Forum: Bicycle Mechanics
04-24-24, 08:39 PM
Replies: 20
Views: 560
Posted By Duragrouch

Oh yes, I know that in normal function, a...

Oh yes, I know that in normal function, a freewheel will, uh, freewheel and not unscrew. If it did, I assumed something was broken in the bearings or ratchet enough to cause enough rotating friction...
Forum: Bicycle Mechanics
04-24-24, 08:32 PM
Replies: 61
Views: 1,498
Posted By Duragrouch

Huh, good to know. I think that was before lift...

Huh, good to know. I think that was before lift pins on the large chainring, right? So how big a jump would upshift OK? I'm thinking that lift pins (or formed protrusions in thin steel rings) help a...
Forum: Bicycle Mechanics
04-24-24, 08:26 PM
Replies: 52
Views: 1,269
Posted By Duragrouch

Even worse, you buy a Shimano chain and a SRAM...

Even worse, you buy a Shimano chain and a SRAM rear derailleur, sounds like you get nothing! My 50/34 hollow spindle 2-piece crank came with zero instructions. Fortunately, I was able to find online,...
Forum: General Cycling Discussion
04-24-24, 07:11 PM
Replies: 74
Views: 3,940
Posted By Duragrouch

Trivia, from wiki:

Trivia, from wiki:
Forum: Folding Bikes
04-24-24, 07:01 PM
Replies: 7
Views: 284
Posted By Duragrouch

Speed is speed, and especially if you enjoy a...

Speed is speed, and especially if you enjoy a light race-bike feel, you'll enjoy same on a similarly equipped folder. I've gone the opposite direction on my folder, larger heavier tires, both for...
Forum: Commuting
04-24-24, 06:53 PM
Replies: 208
Views: 9,499
Posted By Duragrouch

I'm so used to seeing 50/34 now, what used to be...

I'm so used to seeing 50/34 now, what used to be normal 42, now looks to my eye like half-step.

I made a breakthrough in climbing standing (efficiency) when I figured out, to not be geared too low...
Forum: General Cycling Discussion
04-24-24, 06:44 PM
Replies: 24
Views: 626
Posted By Duragrouch

Fatigue failure is a function of the magnitude of...

Fatigue failure is a function of the magnitude of fluctuation in stresses, in addition to the peak stress loads. Worse would be fully-reversing loads, not the case here as slender spokes will not...
Forum: Bicycle Mechanics
04-24-24, 05:53 PM
Replies: 52
Views: 1,269
Posted By Duragrouch

1X... good to know.

1X... good to know.
Forum: Bicycle Mechanics
04-24-24, 05:47 PM
Replies: 52
Views: 1,269
Posted By Duragrouch

I resemble that remark. I thought I was...

I resemble that remark.

I thought I was being original. But I went long, for reasons stated above (by me, and others), tried it out, worked fine.

I also don't like having the RD cage wound so...
Forum: Commuting
04-24-24, 05:39 PM
Replies: 208
Views: 9,499
Posted By Duragrouch

A-D: Nice classic bike. I see no triple crank,...

A-D: Nice classic bike. I see no triple crank, and also, is it me, or is the inner ring not a 42, but larger, closer to half-step gearing? Just curious. If you don't need the lows on the hills,...
Forum: Bicycle Mechanics
04-24-24, 05:31 PM
Replies: 61
Views: 1,498
Posted By Duragrouch

Middle gears... yeah that make sense. I just feel...

Middle gears... yeah that make sense. I just feel like I still have too much overlap. On my old race bike, 52/42x7, I think 6 gears were dupes. On my current 50/34x7, 5 gears are dupes. I'd like a...
Forum: Bicycle Mechanics
04-24-24, 02:48 AM
Replies: 6
Views: 190
Posted By Duragrouch

Like Andy above, I last rebuilt an internal gear...

Like Andy above, I last rebuilt an internal gear hub 50 years ago.

Aaron's Bike repair in greater Seattle has a great web page on internal gear hubs, they do a lot of servicing on them. Scroll way...
Forum: Bicycle Mechanics
04-24-24, 02:17 AM
Replies: 52
Views: 1,269
Posted By Duragrouch

Slightly different model of the same rear...

Slightly different model of the same rear derailleur below. I also suspected chain too short. However, my own philosophy is not, to make the chain as short as possible (big/big combo plus a couple...
Forum: Bicycle Mechanics
04-24-24, 01:49 AM
Replies: 2
Views: 138
Posted By Duragrouch

I wish I had that adjustment on my Microshift FD,...

I wish I had that adjustment on my Microshift FD, the return spring is massively strong, I can't use a gripshift because of it, and even a trigger shifter is a struggle. Shimano FDs are better but...
Forum: Folding Bikes
04-24-24, 12:58 AM
Replies: 7
Views: 284
Posted By Duragrouch

You might mount the drivetrain; cassette if it...

You might mount the drivetrain; cassette if it will fit on the existing Zizzo freehub body (don't know if it will accommodate 11sp), however the derailleur might hang too low on 20" wheels with a big...
Forum: Bicycle Mechanics
04-24-24, 12:26 AM
Replies: 61
Views: 1,498
Posted By Duragrouch

..

..
Forum: General Cycling Discussion
04-24-24, 12:22 AM
Replies: 24
Views: 626
Posted By Duragrouch

I've had cracks at spoke holes, that's the...

I've had cracks at spoke holes, that's the primary failure mode, on road bike wheels on smooth roads. But 35 miles a day, 8 months of the year, for 3 years, that's a lot of miles. Wore out the...
Forum: Bicycle Mechanics
04-24-24, 12:08 AM
Replies: 61
Views: 1,498
Posted By Duragrouch

I dunno about that. If, theoretically, you have a...

I dunno about that. If, theoretically, you have a big enough difference in chainrings so that there is no overlap, then you start on the small ring, go through the entire cassette, switch to the big...
Forum: Bicycle Mechanics
04-24-24, 12:01 AM
Replies: 20
Views: 560
Posted By Duragrouch

If the freewheel just unscrewed itself, you...

If the freewheel just unscrewed itself, you should be able to screw it back on (right hand thread) until snug, and just pedaling force will fully tighten it, especially in the lowest gear and...
Forum: Bicycle Mechanics
04-23-24, 11:54 PM
Replies: 61
Views: 1,498
Posted By Duragrouch

Yep. In flat land, I rode my road race bike with...

Yep. In flat land, I rode my road race bike with 52/42 for well over a decade. Moved to a place with hills, it wasn't long until I traded that out for a triple. But that was before wide doubles.
Forum: Folding Bikes
04-23-24, 11:39 PM
Replies: 88
Views: 32,066
Posted By Duragrouch

Thanks. Funny, the small bubble fairing I vaguely...

Thanks. Funny, the small bubble fairing I vaguely recall is not present in either photo. Maybe I'm thinking of seeing it on a different bike, probably. Now, the full-faired one, I was not aware that...
Forum: Folding Bikes
04-23-24, 01:41 AM
Replies: 88
Views: 32,066
Posted By Duragrouch

I'm new to this Argument Room. I've never...

I'm new to this Argument Room.

I've never ridden a Moulton of any kind. I'd love to own one as functional art.

Just a couple notes:
- IIRC, from decades ago, I thought a Moulton space frame,...
Forum: Bicycle Mechanics
04-22-24, 11:22 PM
Replies: 61
Views: 1,498
Posted By Duragrouch

Agreed, aesthetics do matter. That was why I...

Agreed, aesthetics do matter. That was why I wanted a 5 arm crank and not 4. But everything aftermarket seems black these days, not matching a bike with classic silver. It's cheaper to paint than...
Forum: General Cycling Discussion
04-22-24, 10:37 PM
Replies: 24
Views: 626
Posted By Duragrouch

Spokes on drive side are higher tension than...

Spokes on drive side are higher tension than non-drive side, to compensate for the lower lateral angle for the wheel dish on derailleur gearing. It makes complete sense that drive side cracked first....
Forum: Bicycle Mechanics
04-22-24, 10:19 PM
Replies: 61
Views: 1,498
Posted By Duragrouch

That's a good price. So perhaps. However in my...

That's a good price. So perhaps. However in my case, a 50/34 hollow spindle crank, including BB bearings, on sale for $52 (20% off $65), was a deal-and-a-half, as I needed a new BB also. I sure hope...
Forum: Road Cycling
04-22-24, 09:57 PM
Replies: 50
Views: 1,322
Posted By Duragrouch

You might be right, that I was originally right....

You might be right, that I was originally right. What I wrote above may make sense in the short term, like 8 or 10 links passage, but over the whole chain length, it has to average out, unless, there...
Forum: Bicycle Mechanics
04-22-24, 08:45 PM
Replies: 20
Views: 560
Posted By Duragrouch

There was another thread about bikes in big...

There was another thread about bikes in big airline boxes, needing to transport on top of car and possibility of it getting wet, and someone said, "Get thee to a nunnery and ask them to give you one...
Forum: Road Cycling
04-22-24, 08:27 PM
Replies: 50
Views: 1,322
Posted By Duragrouch

In a good way, or bad way? Debating for the sake...

In a good way, or bad way? Debating for the sake of debating, bad. Thinking with the ability of a supercomputer of all possibilities, not bad.
Forum: Road Cycling
04-22-24, 08:18 PM
Replies: 50
Views: 1,322
Posted By Duragrouch

OK, in opposition to my own stated logic,...

OK, in opposition to my own stated logic, thinking real hard about this, I may see a possibility of non-exact-digital tooth-for-tooth rotation. Or I could be wrong. Follow me here... Let's start with...
Forum: Folding Bikes
04-22-24, 04:16 AM
Replies: 8
Views: 651
Posted By Duragrouch

If the original paint is mostly there, I would...

If the original paint is mostly there, I would leave it and touch up where necessary, unless you hate the color. Touch up paints are now expensive at the auto parts store but nail polish works just...
Forum: Bicycle Mechanics
04-22-24, 02:16 AM
Replies: 35
Views: 813
Posted By Duragrouch

The tube may be too long. But first, understand...

The tube may be too long. But first, understand that the rim outside seating surface, is significantly smaller that the inside tire seating surface just under the tread. So, with bare minimum...
Forum: Advocacy & Safety
04-22-24, 12:08 AM
Replies: 30
Views: 675
Posted By Duragrouch

Let me rephrase. Go on the sidewalk from the...

Let me rephrase. Go on the sidewalk from the beginning. I realize with a high curb that they cannot easily go on the sidewalk midpoint. I was biking in an area where curb cutouts to the sidewalk were...
Forum: Advocacy & Safety
04-21-24, 11:56 PM
Replies: 55
Views: 2,298
Posted By Duragrouch

(above) Ah, thanks. No surprise on the high...

(above) Ah, thanks. No surprise on the high percentage cities.
Forum: Bicycle Mechanics
04-21-24, 11:33 PM
Replies: 20
Views: 560
Posted By Duragrouch

(above) I hadn't looked at your earlier links....

(above) I hadn't looked at your earlier links. That does in fact look like a freewheel, not a cassette/freehub. If it's "loose", it is either:
- Coming unscrewed from the hub threads (forward riding...
Forum: Advocacy & Safety
04-21-24, 11:22 PM
Replies: 55
Views: 2,298
Posted By Duragrouch

I'm astonished that 93,000 commute to work by...

I'm astonished that 93,000 commute to work by bicycle in Los Angeles. That's a lot, especially without dedicated bike infrastructure, unless there's more than I know, I'm not a resident.
Forum: Bicycle Mechanics
04-21-24, 11:05 PM
Replies: 20
Views: 560
Posted By Duragrouch

A new electric bike, I highly doubt is a...

A new electric bike, I highly doubt is a freewheel. It is probably a cassette (assembly of cogs) on a freehub. You may need to tighten the "lockring" that holds the cassette on the freehub body. The...
Forum: General Cycling Discussion
04-21-24, 10:56 PM
Replies: 26
Views: 905
Posted By Duragrouch

It's a confluence of bad: Aluminum has a high...

It's a confluence of bad: Aluminum has a high coefficient of thermal expansion, small diameter rim (20"), so less heat sink, and short spokes, so less elasticity. In my case, also add only using rear...
Forum: Hybrid Bicycles
04-21-24, 10:45 PM
Replies: 4
Views: 404
Posted By Duragrouch

I love having racks and panniers, and if planning...

I love having racks and panniers, and if planning a kid carrier long term, buy one capable of that. But I would not carry any age child on the bike until she has plenty of bike experience. And then,...
Forum: Road Cycling
04-21-24, 10:34 PM
Replies: 50
Views: 1,322
Posted By Duragrouch

Good explanation, but I would debate the bolded...

Good explanation, but I would debate the bolded above; Chain driving toothed cogs is about as discrete, dare I say digital, as it gets. These are not frictional belts. Perhaps as you get to very...
Forum: Touring
04-21-24, 10:25 PM
Replies: 19
Views: 888
Posted By Duragrouch

Oh for cargo or instruments, looks fine. It won't...

Oh for cargo or instruments, looks fine. It won't take the same loads as closed-section aerobars, but if a lot lower cost, a good solution for those. For equal money, I would buy good aerobars.
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