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Search: Posts Made By: Duragrouch
Showing results 1 to 50 of 1000
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Forum: Folding Bikes
09-24-24, 01:56 AM
Replies: 8
Views: 363
Posted By Duragrouch

Unless they fly even occasionally with the bike....

Unless they fly even occasionally with the bike. But only local use, very infrequent folding, I'd agree. It can't be due to suspicion about the hinge on a bifold, as Bromptons have a hinge, just...
Forum: Framebuilders
09-24-24, 01:36 AM
Replies: 38
Views: 2,349
Posted By Duragrouch

Sorry, I forgot about my earlier postings in this...

Sorry, I forgot about my earlier postings in this thread. That's kinda par for the course for me these days.
Forum: Bicycle Mechanics
09-23-24, 10:55 PM
Replies: 15
Views: 290
Posted By Duragrouch

Another possibility: Chain and/or cogs worn, such...

Another possibility: Chain and/or cogs worn, such that no longer a good match:
- With a stretched chain, when you pedal hard, all the force is going into the tooth on top, and the pinging is the...
Forum: Bicycle Mechanics
09-23-24, 10:44 PM
Replies: 15
Views: 290
Posted By Duragrouch

I didn't find online an engineering or mechanical...

I didn't find online an engineering or mechanical definition for Twinning. Please do enlighten us. Thanks.
Forum: Touring
09-23-24, 10:38 PM
Replies: 106
Views: 3,250
Posted By Duragrouch

All good info. But... getting back to my original...

All good info. But... getting back to my original question, someone implied with a post seen online, that 29er rims were hard to find in a particular country. Keeping in mind that 29er uses same 622...
Forum: Bicycle Mechanics
09-23-24, 10:23 PM
Replies: 111
Views: 3,619
Posted By Duragrouch

Yes, I had been aware. But I never dropped chains...

Yes, I had been aware. But I never dropped chains on my old race bike. But, it had closer cog spacing (in teeth, not width), and the original crank on my folder had a very slightly wobbly chainwheel....
Forum: Framebuilders
09-23-24, 10:11 PM
Replies: 38
Views: 2,349
Posted By Duragrouch

That's such a weird failure mode, given that...

That's such a weird failure mode, given that stresses on that side of the seat tube are in compression. The cracks at seatstays, I can only guess that the stays flared out enough so that under...
Forum: Folding Bikes
09-23-24, 09:58 PM
Replies: 77
Views: 6,063
Posted By Duragrouch

Well, since you made it obvious with actual...

Well, since you made it obvious with actual pictoral evidence :), yeah it might be close for 62" combined girth for checked baggage. But I have thought for some time, that airlines should offer bikes...
Forum: Folding Bikes
09-23-24, 04:55 AM
Replies: 77
Views: 6,063
Posted By Duragrouch

A 16" Brompton has huge space between the rear...

A 16" Brompton has huge space between the rear tire and the front of the rear triangle. So a 20"/406 may fit on the same triangle length.

The chainstay length for a good fold can be finessed by...
Forum: Folding Bikes
09-23-24, 04:37 AM
Replies: 8
Views: 363
Posted By Duragrouch

Well that explains it. And I mispoke, I...

Well that explains it.

And I mispoke, I meant to say my bifold, not trifold.
Forum: Touring
09-23-24, 04:10 AM
Replies: 106
Views: 3,250
Posted By Duragrouch

(above) It's not a question of what is common, I...

(above) It's not a question of what is common, I think; 700C used to be de rigueur for touring bikes (at least I thought), ETRTO 622, same as 29er, so my question is, uses same rims, or are typical...
Forum: Folding Bikes
09-23-24, 04:03 AM
Replies: 8
Views: 363
Posted By Duragrouch

Are you a "frequent folder" and carrier, like on...

Are you a "frequent folder" and carrier, like on a daily basis? Or do you mostly fold your bikes for travel?

The last time I folded my trifold bifold was several years ago for a train trip...
Forum: Bicycle Mechanics
09-23-24, 01:57 AM
Replies: 13
Views: 356
Posted By Duragrouch

In addition to all of the above: Check that...

In addition to all of the above:

Check that the cassette is tight (lockring) on the cassette body. Now try to wiggle the big cog laterally; This is bearing slack in the freehub body, a little is...
Forum: Touring
09-23-24, 01:36 AM
Replies: 106
Views: 3,250
Posted By Duragrouch

(above) 29er touring rims? In other words,...

(above) 29er touring rims? In other words, 700C/622 touring rims? Hard to find? What am I missing, wider?

And did he get hit by a can, or a cab? b and n are next to each other in QWERTY.
Forum: Bicycle Mechanics
09-23-24, 01:29 AM
Replies: 15
Views: 290
Posted By Duragrouch

A new wheelset will sometimes ping, if any of the...

A new wheelset will sometimes ping, if any of the spokes got wound up during truing. As that spoke goes to the bottom near the ground, the rider weight will slightly reduce tension enough to reduce...
Forum: Fatbikes
09-23-24, 01:17 AM
Replies: 16
Views: 723
Posted By Duragrouch

Brooks makes a quality leather saddle, normally...

Brooks makes a quality leather saddle, normally needs extensive breaking-in, but these days they sell ones that are preconditioned. They also make one with 2 coil springs under the aft end, I don't...
Forum: Folding Bikes
09-23-24, 12:55 AM
Replies: 8
Views: 363
Posted By Duragrouch

No, only because the shipping cost is over $300. ...

No, only because the shipping cost is over $300.

Oh, 20", not 16". There's a BIG thread, Folders For Family Fun, the OP bought 2 different 20" trifolds, my guess is from Ali, but I don't know....
Forum: Folding Bikes
09-22-24, 11:36 PM
Replies: 8
Views: 275
Posted By Duragrouch

I know it's possible to have non-radial but...

I know it's possible to have non-radial but without the spokes crossing and touching, but instead converge at a point further in radially. But I don't see that here, that looks pure radial spoking. I...
Forum: Folding Bikes
09-22-24, 10:50 PM
Replies: 77
Views: 6,063
Posted By Duragrouch

I thought liquid cooling was also for emissions,...

I thought liquid cooling was also for emissions, but I couldn't remember if there were USA emission standards now for motorcycles.

BMW designed the K series (inline 3 and 4 laid on its side),...
Forum: Folding Bikes
09-22-24, 10:35 PM
Replies: 397
Views: 17,962
Posted By Duragrouch

If you want the lightest steering, yes. But I...

If you want the lightest steering, yes. But I like that some steered mass, especially forward of the steering axis, calms the steering. It doesn't take much, I noticed improvement just from the rack...
Forum: Bicycle Mechanics
09-22-24, 10:22 PM
Replies: 51
Views: 2,649
Posted By Duragrouch

You ain't kidding; when Harbor Freight had really...

You ain't kidding; when Harbor Freight had really nice looking click-stop torque wrenches (so much easier to use than beam type which are hard to read in some applications) in 1/4" drive...
Forum: Folding Bikes
09-22-24, 10:06 PM
Replies: 77
Views: 6,063
Posted By Duragrouch

I looked up the Caracle, impressive folded size....

I looked up the Caracle, impressive folded size. Only thing I don't like, is that the main frame tube low, but with a hinge, there is no way to improve things without a compression strut above it....
Forum: Folding Bikes
09-22-24, 10:02 PM
Replies: 77
Views: 6,063
Posted By Duragrouch

Their newer engine bikes are liquid cooled. But...

Their newer engine bikes are liquid cooled. But the worst thing about a H-D is the 45 degree V angle, so they have terrible secondary engine balance, especially with such a big engine. 90 degree...
Forum: General Cycling Discussion
09-22-24, 09:48 PM
Replies: 129
Views: 6,784
Posted By Duragrouch

I've read good things in the forum and reviews...

I've read good things in the forum and reviews about Tubus racks. The other one caught my eye because 3 supports per side for the pannier lower tier. Rear racks are getting mighty scarce at my LBS,...
Forum: Folding Bikes
09-22-24, 09:35 PM
Replies: 397
Views: 17,962
Posted By Duragrouch

(above) Thanks for the link, and the note about...

(above) Thanks for the link, and the note about the front block.

I'd probably split the load; My current brake post rack, deck about 2" above the tire, hangs panniers low but about 2/3 of them...
Forum: Bicycle Mechanics
09-22-24, 03:15 AM
Replies: 21
Views: 585
Posted By Duragrouch

(above video) OK, the front hub looks like a...

(above video) OK, the front hub looks like a dynamo (generator) hub, until I realized that is a front-wheel-drive electric. That is a motor. Falling over could damage a lot inside, like bending the...
Forum: Folding Bikes
09-22-24, 02:24 AM
Replies: 10
Views: 388
Posted By Duragrouch

Thanks. That explains a lot. My bike universe...

Thanks. That explains a lot. My bike universe began at 126mm, so I'm weak on stuff before then, even though I rode a 3 speed thru the '70s, I never did any technical work on it. Actually, I did fix...
Forum: Folding Bikes
09-22-24, 01:45 AM
Replies: 397
Views: 17,962
Posted By Duragrouch

Gosh, just nice looking bikes. I don't think you...

Gosh, just nice looking bikes. I don't think you could have done better. I'm gonna have to wade back into the early posts to see where you sourced the frames like the Fnhon Storm disc, as I just...
Forum: General Cycling Discussion
09-22-24, 01:20 AM
Replies: 129
Views: 6,784
Posted By Duragrouch

If you don't mind... who makes the rear rack? I...

If you don't mind... who makes the rear rack? I like the lower tier for panniers, and that it is supported at 3 positions per side, the aft pannier position, and wide lower section to keep the back...
Forum: Folding Bikes
09-22-24, 12:02 AM
Replies: 77
Views: 6,063
Posted By Duragrouch

Wow, that is a big selection of tires! Helix...

Wow, that is a big selection of tires!

Helix actually specs the outside diameter at 23", and I think that is essential for the fold.

The hub is spec'ed as "Formula Helix". Sounds like made for...
Forum: Folding Bikes
09-21-24, 11:14 PM
Replies: 77
Views: 6,063
Posted By Duragrouch

I think the decision for 24" was them looking at...

I think the decision for 24" was them looking at gear inches versus fast bikes. My 20" has a tall enough top gear (50x11x406) for me, I can pedal down mild grades, but it's no race bike. Given that...
Forum: Touring
09-21-24, 10:28 PM
Replies: 106
Views: 3,250
Posted By Duragrouch

I cared for mine like fine wine, dark and cool....

I cared for mine like fine wine, dark and cool. Derek said in his book, the original round rubber hatch covers were from round storage containers found along beaches in the UK either during or after...
Forum: Folding Bikes
09-21-24, 09:43 PM
Replies: 77
Views: 6,063
Posted By Duragrouch

Unsurprising, given that they both use swinging...

Unsurprising, given that they both use swinging rear triangles that need to package the same, forward of the bottom bracket, and similar tires. However I'd be curious how that compares to a typical...
Forum: Fatbikes
09-21-24, 08:48 PM
Replies: 16
Views: 723
Posted By Duragrouch

That's a really good point that didn't occur to...

That's a really good point that didn't occur to me (because I don't run fat tires). Like stacked springs of different rates, the low rate will compress more easily.
Forum: Classic & Vintage
09-21-24, 08:43 PM
Replies: 25
Views: 599
Posted By Duragrouch

Very cool car. Treated like the b@stard child...

Very cool car. Treated like the b@stard child because assembled by Audi, but superior balance and driving dynamics than a 911 chassis. 914/6 was a wolf in sheep's clothing.

My early 20s car had...
Forum: Folding Bikes
09-21-24, 05:17 AM
Replies: 10
Views: 388
Posted By Duragrouch

I just realized that clearing up a couple things...

I just realized that clearing up a couple things may help.

Usually, an internal gear hub is a *more expensive* option on bikes that offer both IGH or external derailleur gears. Like $300 for an...
Forum: Folding Bikes
09-21-24, 05:06 AM
Replies: 77
Views: 6,063
Posted By Duragrouch

Thanks. Yeah I would have suspected as much...

Thanks. Yeah I would have suspected as much regarding 451, but I thought you or someone else on here had mentioned they now have a wider selection of tires, such as wider Schwalbes, on 451, during a...
Forum: Touring
09-21-24, 04:55 AM
Replies: 106
Views: 3,250
Posted By Duragrouch

Nice boat. IIRC, I think Skerray was 24" beam and...

Nice boat. IIRC, I think Skerray was 24" beam and stable feeling, I think I may have paddled one for a few minutes. I had a P&H Dawn Treader fit out like yours with pump, got for a great deal with no...
Forum: General Cycling Discussion
09-21-24, 02:18 AM
Replies: 13
Views: 355
Posted By Duragrouch

Fatigue failure over many years. Aluminum is...

Fatigue failure over many years. Aluminum is particularly susceptible. The straight-across break indicates it failed from bending fatigue, not torsion which would cause a spiral break at 45 degrees...
Forum: Bicycle Mechanics
09-21-24, 01:19 AM
Replies: 111
Views: 3,619
Posted By Duragrouch

If 1X, more than about twice a year is too much...

If 1X, more than about twice a year is too much for me, given the messiness in the field to put the chain back on.

For 2X or 3X, depends on the cause; If front derailleur or shifter out of...
Forum: Folding Bikes
09-21-24, 01:09 AM
Replies: 77
Views: 6,063
Posted By Duragrouch

I also thought about the Helix at that price....

I also thought about the Helix at that price. However the 24"/507(?) wheels are the drawback, with limited tire selection. Given that the Helix is disc brake, I wondered if possible to fit 20"/451...
Forum: Folding Bikes
09-20-24, 10:27 PM
Replies: 10
Views: 388
Posted By Duragrouch

I mentioned on another thread on this same topic,...

I mentioned on another thread on this same topic, that I just realized, that 120mm may not be an odd size, that may have been standard O.L.D. for English 3-speeds with Sturmey-Archer hubs.
Forum: Folding Bikes
09-20-24, 10:22 PM
Replies: 397
Views: 17,962
Posted By Duragrouch

Oh absolutely. As soon as I saw the chrome-moly...

Oh absolutely. As soon as I saw the chrome-moly steel Storm available with discs, I was drooling. But the frame isn't available that cheap here, although I think ChiapasFixed may have gotten a good...
Forum: Bicycle Mechanics
09-20-24, 10:14 PM
Replies: 40
Views: 1,574
Posted By Duragrouch

Sounds about right. I normally think in metric...

Sounds about right. I normally think in metric these days, but if I recall, pedal threads are 20 TPI, so 0.050" pitch, so fractions of that, or if too thin, then 1-1/4 pitch thickness instead of 1/4....
Forum: Folding Bikes
09-20-24, 09:58 PM
Replies: 397
Views: 17,962
Posted By Duragrouch

Up until now, no question, your points are all...

Up until now, no question, your points are all correct.

Hopefully the market will surprise us and offer a trifold that satisfies all of the above. It's these kinds of things where I love to be...
Forum: Bicycle Mechanics
09-20-24, 09:50 PM
Replies: 11
Views: 315
Posted By Duragrouch

I'm guessing they mean, that with the schrader...

I'm guessing they mean, that with the schrader adaptor screwed onto the end of a presta valve, the schrader pump head is not depressing the presta valve core. I can't remember if that is necessary to...
Forum: Folding Bikes
09-20-24, 09:41 PM
Replies: 397
Views: 17,962
Posted By Duragrouch

It's new knowledge to me this year, I've only...

It's new knowledge to me this year, I've only become active on BF early this year (didn't know about the folding group before then). I suppose on the original 349 Brompton, Andrew Ritchie was...
Forum: Touring
09-20-24, 09:30 PM
Replies: 106
Views: 3,250
Posted By Duragrouch

Valley Nordkapp?

Valley Nordkapp?
Forum: Classic & Vintage
09-20-24, 04:53 AM
Replies: 25
Views: 599
Posted By Duragrouch

Then, yes. Now... "Where's the distributor?" ...

Then, yes. Now...
"Where's the distributor?"
"What's a distributor?"
Forum: Folding Bikes
09-20-24, 04:22 AM
Replies: 10
Views: 388
Posted By Duragrouch

Bromptons have weird rear dropout spacing...

Bromptons have weird rear dropout spacing (O.L.D.), you can't just drop in any IGH, they get theirs made custom. An shop in Scotland makes rear triangles for 349 Bromptons in widths to accommodate...
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