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Eurobike 2015: Dahon announces Curl for a record seventh time!

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Eurobike 2015: Dahon announces Curl for a record seventh time!

Old 09-08-15, 05:30 AM
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Eurobike 2015: Dahon announces Curl for a record seventh time!




Here's the latest from the company
. Anybody's guess as to what 'the long-awaited Curl is finally being mass-produced for the Spring of 2016 for test marketing' means? Anyway, they claim ISO355 wheels, no rear suspension. The bike pictured has the less innovative 'Western' frame and the new side-fold saddle.

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Old 09-08-15, 07:49 AM
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Old 09-08-15, 02:16 PM
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Originally Posted by tcs View Post
Anyway, they claim ISO355 wheels, no rear suspension. The bike pictured has the less innovative 'Western' frame and the new side-fold saddle.
They should just…
  1. copy Brompton's folding method since its patent expired years ago
  2. make the bike look different enough so that Brompton's lawyers can't sue them (What about Birdy's sexy frame?)
  3. fix Brompton's weaknesses (crappy brakes, 2x3 odd system to get six speeds, wobbly steering)
  4. sell it for about $€1,000

They'd clean up.

Incidently, a Korean company is gathering money to manufacture a carbon copy (litteraly) of the Brompton:

chedech.com

Do you think they'll get away with it?
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Old 09-12-15, 08:13 AM
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And now the latest iteration is back on Dahon's home market website. The spec's say it's equipped with a Nexus 3 IGH. If that's true and the pictures are accurate - no guarantees on either! - then it's the new SG-3R75 hub. That would mean the OLD is wide enough to fit almost any IGH.

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Old 09-12-15, 11:56 AM
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Originally Posted by Winfried View Post
Incidently, a Korean company is gathering money to manufacture a carbon copy (litteraly) of the Brompton:

chedech.com

Do you think they'll get away with it?
While obviously Brompton influenced, that bike looks unique enough to claim its own style. One of the things some people like about Bromptons is how unchanged they are in a couple decades (and in fairness - it seems a "timeless" design), but that of course creates vulnerabilities. Which this bike takes advantage of. It may be incremental innovation... but it is innovation.
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Old 09-12-15, 12:34 PM
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Originally Posted by tcs View Post
And now the latest iteration is back on Dahon's home market website. The spec's say its equipped with a Nexus 3 IGH. If that's true and the pictures are accurate - no guarantees on either! - then it's the new SG-3R75 hub. That would mean the OLD is wide enough to fit almost any IGH.
Being upgradeable to an 8 speed IGH would be excellent,...if it actually HAPPENS!!! So far it's major vaporware.
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Old 09-12-15, 04:32 PM
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Originally Posted by tcs View Post
And now the latest iteration is back on Dahon's home market website. The spec's say its equipped with a Nexus 3 IGH.
Hopefully, they'll offer it with a 7-8 speed IGH as well

It's a shame they didn't weld a lug in the front, unlike other Dahon bikes. It's so convenient when commuting.
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Old 09-13-15, 09:03 AM
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Hopefully they will bring it to market soon.
Competition would be good for Brompton.

I agree that no carrier block is a big oversight.
I see room for improvement like having a 1 piece stem to keep flex down and losing some rear spokes.
Smaller wheels are supposed to be stronger than larger ones so why use so many heavy spokes in back?
They should just skip a few spokes or actually order hubs and rims with less holes.
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Old 09-13-15, 06:02 PM
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Originally Posted by ttakata73 View Post
Smaller wheels are supposed to be stronger than larger ones so why use so many heavy spokes in back?
They should just skip a few spokes or actually order hubs and rims with less holes.
Yeah, looking at the millions of foldies Dahon has produced in the past, I'd say they're up to speed on the small wheels need fewer spokes thing. Any other bike & I'd suggest the prototype used an off the shelf SG-3R75 and the production bikes will have 28 spokers...but it's hard to use the words 'Curl' and 'production' in the same sentence with a straight face.
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Old 09-18-15, 09:12 AM
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Suspension is the crucial factor in a Brompton's ride being reasonable, IMO.
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Old 09-18-15, 04:53 PM
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Big apples in 305 etro always made the Dahon curve just as comfortable imo as brommie.
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Old 09-28-15, 06:19 PM
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Originally Posted by Winfried View Post
Incidently, a Korean company is gathering money to manufacture a carbon copy (litteraly) of the Brompton:

chedech.com

Do you think they'll get away with it?
Looking at this again it strikes me that they've changed the geometry slightly, slackened the headtube angle and increased the trail, which might improve the ride considerably.
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Old 09-29-15, 08:12 PM
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oh by the way I haven't seen the curl on Interbike booth this year lol
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Old 09-30-15, 12:34 PM
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Well, you know, Dahon is listed on the Taiwan stock exchange now, so they have to keep public investors happy. Their stated thrust at the int'l dealer's meeting (PowerPoint slide @ 2:09) is to streamline the product offerings into a single international line up, put their efforts into manufacturing rather than new product introductions, and only take orders for designs that are ready to ship. The Curl saga continues...

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Old 10-01-15, 08:33 AM
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Considering the number of people who benefit from a compact folder to combine cycling + public transit, and being able to park the bike at the office/home, it's amazing Dahon still doesn't have a Brompton-like bike that would improve on the B's weaknesses.

At $€1,000, they'll clean up.
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Old 10-03-15, 01:45 PM
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Originally Posted by Winfried View Post
At $€1,000, they'll clean up.
Yeah - but it's not like they're scraping by now.
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Old 10-03-15, 02:35 PM
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But not a few people would certainly buy a Brompton-like bike if it sold for $€700-1,000.

€1,500 is a harder sell for people who either commute by public transit or own a car and new to keep it.

Besides, the Brompton is not without defaults. It's about time it gets some competition.
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Old 10-05-15, 05:38 PM
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The long-awaited Curl is finally being mass-produced for the Spring of 2016 for test marketing. […] The novel “V” coupling of the rear to the front triangles. This turns The Curl into a hard-tail bicycle without the bounciness and inefficiency during pedaling notorious for some bikes. The down-tube, separating into a pair, allows the front frame to closely resemble a triangle, providing much needed strength and stiffness.An extra-large head-tube and handlebar-post, along with an inverted fork stem, provide even more strength and stiffness."
DAHON Bikes:*News



It doesn't sound like a smooth ride to the office, does it?
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Old 10-05-15, 05:55 PM
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Folding bikes have more to gain from carbon construction than almost any other kind of bike. All those extra welds and large diameter tubes are just crying out for a monocoque replacement. Weigh is really critical in a folder, yet most are too heavy.
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Old 10-05-15, 08:32 PM
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Originally Posted by MichaelW View Post
Folding bikes have more to gain from carbon construction than almost any other kind of bike. All those extra welds and large diameter tubes are just crying out for a monocoque replacement. Weigh is really critical in a folder, yet most are too heavy.
Common mistake here. The assumption that just because the frame is a large visual part, it necessarily dominates the overall weight.

Not so. If the same dedication to weight shaving is applied to a folding bike that is commonly applied to top end racing bikes, you end up with a very light weight folder. A good case in point: Just a few days ago someone posted a link to a Brompton of all bikes, weighing less than 7kg. You'll agree that we are hardly starting with the world's lightest frame here. Sorry I can't find the link.
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Old 10-06-15, 03:11 AM
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Originally Posted by jur View Post
Not so. If the same dedication to weight shaving is applied to a folding bike that is commonly applied to top end racing bikes, you end up with a very light weight folder.
If your starting point is a Brommie, even a Ti version,yes, you can "add lightness".
Brommies were designed primarily for size, not weight.
I think there is a place for an ultralight folder designed from the ground up, esp for riders who can't lift weights. Carbon gives you much more freedom to create shapes, assymetric parts, and do away with the multitude of short tubes and complex welds. Lightweight has it's virtuous circle. Less weigh -> easier pedalling-> fewer gears required. A 3-speed hub with a Gates drive would be sufficient and stay cleaner.

If a Brommie can be reduced to 15 lbs, what is the limit for a purpose-designed ultralight folder. Could you crack 10lbs for a serious riding machine.
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Old 10-06-15, 03:20 AM
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ORi supra carbon is 8.7 KG afaicr. Thats a 20" , 10 speed bike that has a compact fold for a 20" as its based on a Mezzo. I Only know of one Mezzo failure to seatpost tube and owner admitted over extending. Easy repair I would have thought.
So 10 kgs seem perfectly possible with a rack and mudguard ,even at a push.

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Old 10-06-15, 04:38 AM
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Originally Posted by MichaelW View Post
Folding bikes have more to gain from carbon construction than almost any other kind of bike.
Right, but carbon is 1) less reliable than steel, and 2) much more expensive. Not a few people already choke at the $€1,500 price tag of the six-speed Brompton, while its carbon equivalent would cost about twice that.

Originally Posted by MichaelW View Post
A 3-speed hub with a Gates drive would be sufficient and stay cleaner.
A belt drive is incompatible with the compact fold of the Brompton.
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Old 10-06-15, 05:07 AM
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Originally Posted by MichaelW View Post
If your starting point is a Brommie, even a Ti version,yes, you can "add lightness".
Brommies were designed primarily for size, not weight.
I think there is a place for an ultralight folder designed from the ground up, esp for riders who can't lift weights. Carbon gives you much more freedom to create shapes, assymetric parts, and do away with the multitude of short tubes and complex welds. Lightweight has it's virtuous circle. Less weigh -> easier pedalling-> fewer gears required. A 3-speed hub with a Gates drive would be sufficient and stay cleaner.

If a Brommie can be reduced to 15 lbs, what is the limit for a purpose-designed ultralight folder. Could you crack 10lbs for a serious riding machine.
Actually there are quite a few carbon folders out there. Hasa has one. Maybe not designed from the ground up though, but the alloy version built from carbon.

I used to like carbon... now the idea of a plastic bike seems thoroughly unappealing. Not that I think they any less reliable, just the idea... titanium is my metal of choice.
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Old 10-06-15, 06:15 AM
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Id love a carbon folder. I would love someone else to pay for it....
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