#1
|
|||
|
|||
FOLDING BIKE
On Wednesday, November 22, 2017 at 10:30:49 PM UTC-5, wrote:
NYT'S TRAVEL section gift list https://www.nytimes.com/guides/gifts...t-folding-bike Only time will tell. Dahon design flaws can show up after a while. For example, I was surprised to find the spoke nipples on my relatively high end Dahon Speed 7 were aluminum -- discovering this only after stress fractures dislodged the spokes. Why would the designers choose failure prone aluminum over the standard brass nipples? I was luckier than my friend, who's aluminum Dahon frame also developed stress fractures. Over time, many of the nuts and bolts rusted on various parts of my bike rusted. The Speed 7 looked good when I bought it. Over time, the design flaws blossomed. I have bikes that are older, and held together much better. |
Ads |
#2
|
|||
|
|||
FOLDING BIKE
try odorless paint thinner thinned linseed oil applied with a art painters brush see Walmart for brushes
how's are the aluminum/steel contact areas ? |
#3
|
|||
|
|||
FOLDING BIKE
On 12/2/2017 11:10 PM, LF wrote:
On Wednesday, November 22, 2017 at 10:30:49 PM UTC-5, wrote: NYT'S TRAVEL section gift list https://www.nytimes.com/guides/gifts...t-folding-bike Only time will tell. Dahon design flaws can show up after a while. For example, I was surprised to find the spoke nipples on my relatively high end Dahon Speed 7 were aluminum -- discovering this only after stress fractures dislodged the spokes. Why would the designers choose failure prone aluminum over the standard brass nipples? I was luckier than my friend, who's aluminum Dahon frame also developed stress fractures. Over time, many of the nuts and bolts rusted on various parts of my bike rusted. The Speed 7 looked good when I bought it. Over time, the design flaws blossomed. I have bikes that are older, and held together much better. The Ancients actually knew something: http://i.ebayimg.com/images/i/172045...-1/s-l1000.jpg -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#4
|
|||
|
|||
FOLDING BIKE
On 12/3/2017 12:10 AM, LF wrote:
On Wednesday, November 22, 2017 at 10:30:49 PM UTC-5, wrote: NYT'S TRAVEL section gift list https://www.nytimes.com/guides/gifts...t-folding-bike Only time will tell. Dahon design flaws can show up after a while. For example, I was surprised to find the spoke nipples on my relatively high end Dahon Speed 7 were aluminum -- discovering this only after stress fractures dislodged the spokes. Why would the designers choose failure prone aluminum over the standard brass nipples? I wonder if that was just a marketing decision, little different than designing stupid-light components into an ordinary bike. There are customers who will spend extra money for the chance to say "Look! It's got aluminum spoke nipples!!" I was luckier than my friend, who's aluminum Dahon frame also developed stress fractures. Over time, many of the nuts and bolts rusted on various parts of my bike rusted. The Speed 7 looked good when I bought it. Over time, the design flaws blossomed. I have bikes that are older, and held together much better. It occurs to me that folding bike design is much more difficult than standard bike design. There are lots more compromises (cost vs. weight vs. compactness vs. ride quality vs. speed of folding, etc.). There are lots of ways of achieving the folding. Most folding bikes have much less triangulation than standard frames, so forces and torques are concentrated in smaller areas and potentially generate higher stresses. And of course, different designers strive to come up with "innovative" solutions, for market differentiation. Also, I think designers may push limits a bit more, justifying that by saying "People are going to carry it, so it's got to be light; and nobody's going to ride it very far." Our Bike Friday New World Tourists are doing fine, although I've heard (rarely) of some big guys having trouble with cracks around the bottom bracket hinges. But there have been more problems with Bike Friday's more "innovative" Tikit model. -- - Frank Krygowski |
#5
|
|||
|
|||
FOLDING BIKE
On 12/3/2017 10:49 AM, AMuzi wrote:
On 12/2/2017 11:10 PM, LF wrote: On Wednesday, November 22, 2017 at 10:30:49 PM UTC-5, wrote: NYT'S TRAVEL section gift list https://www.nytimes.com/guides/gifts...t-folding-bike Only time will tell.Â*Â* Dahon design flaws can show up after a while. ForÂ* example, I was surprised to find the spoke nipples on my relatively high end Dahon Speed 7 were aluminum -- discovering this only after stress fractures dislodged the spokes.Â* Why would the designers choose failure prone aluminum over the standard brass nipples? I was luckier than my friend, who's aluminum Dahon frame also developed stress fractures.Â* Over time, many of the nuts and bolts rusted on various parts of my bike rusted. The Speed 7 looked good when I bought it. Over time, the design flaws blossomed. I have bikes that are older, and held together much better. The Ancients actually knew something: http://i.ebayimg.com/images/i/172045...-1/s-l1000.jpg I'm curious about the age of that advertisement. As I understand, during the first huge bike boom of the 1890s, steel had the same high tech cachet as titanium or carbon fiber has today. It was still relatively rare and pretty expensive, even if far cheaper than it had been in (say) the 1850s. So I wonder if the ad was from a time when they were bragging that it was new, or from a time (kind of like today) when they were bragging that they don't need none of that new-fangled aluminum? -- - Frank Krygowski |
#6
|
|||
|
|||
FOLDING BIKE
On 12/3/2017 10:04 AM, Frank Krygowski wrote:
On 12/3/2017 10:49 AM, AMuzi wrote: On 12/2/2017 11:10 PM, LF wrote: On Wednesday, November 22, 2017 at 10:30:49 PM UTC-5, wrote: NYT'S TRAVEL section gift list https://www.nytimes.com/guides/gifts...t-folding-bike Only time will tell.  Dahon design flaws can show up after a while. For example, I was surprised to find the spoke nipples on my relatively high end Dahon Speed 7 were aluminum -- discovering this only after stress fractures dislodged the spokes. Why would the designers choose failure prone aluminum over the standard brass nipples? I was luckier than my friend, who's aluminum Dahon frame also developed stress fractures. Over time, many of the nuts and bolts rusted on various parts of my bike rusted. The Speed 7 looked good when I bought it. Over time, the design flaws blossomed. I have bikes that are older, and held together much better. The Ancients actually knew something: http://i.ebayimg.com/images/i/172045...-1/s-l1000.jpg I'm curious about the age of that advertisement. As I understand, during the first huge bike boom of the 1890s, steel had the same high tech cachet as titanium or carbon fiber has today. It was still relatively rare and pretty expensive, even if far cheaper than it had been in (say) the 1850s. So I wonder if the ad was from a time when they were bragging that it was new, or from a time (kind of like today) when they were bragging that they don't need none of that new-fangled aluminum? It was indeed touting a technological breakthrough. The first bicycles were seamed steel tube brazed to cast iron joints. Raleigh was first with "The All Steel Bicycle" having developed bulge-formed steel bottom bracket shells to go along with their pressed steel lugs and thimble crown forks. start at 3:30 he https://www.youtube.com/watch?v=dqoGAXuE4eU also http://www.yellowjersey.org/photosfr...st/THIMBLE.JPG -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#7
|
|||
|
|||
FOLDING BIKE
On 03/12/17 17:28, AMuzi wrote:
On 12/3/2017 10:04 AM, Frank Krygowski wrote: On 12/3/2017 10:49 AM, AMuzi wrote: On 12/2/2017 11:10 PM, LF wrote: On Wednesday, November 22, 2017 at 10:30:49 PM UTC-5, wrote: NYT'S TRAVEL section gift list https://www.nytimes.com/guides/gifts...t-folding-bike Only time will tell. ÂÂ* Dahon design flaws can show up after a while. ForÂÂ* example, I was surprised to find the spoke nipples on my relatively high end Dahon Speed 7 were aluminum -- discovering this only after stress fractures dislodged the spokes.ÂÂ* Why would the designers choose failure prone aluminum over the standard brass nipples? I was luckier than my friend, who's aluminum Dahon frame also developed stress fractures.ÂÂ* Over time, many of the nuts and bolts rusted on various parts of my bike rusted. The Speed 7 looked good when I bought it. Over time, the design flaws blossomed. I have bikes that are older, and held together much better. The Ancients actually knew something: http://i.ebayimg.com/images/i/172045...-1/s-l1000.jpg I'm curious about the age of that advertisement. As I understand, during the first huge bike boom of the 1890s, steel had the same high tech cachet as titanium or carbon fiber has today. It was still relatively rare and pretty expensive, even if far cheaper than it had been in (say) the 1850s. So I wonder if the ad was from a time when they were bragging that it was new, or from a time (kind of like today) when they were bragging that they don't need none of that new-fangled aluminum? It was indeed touting a technological breakthrough. The first bicycles were seamed steel tube brazed to cast iron joints. Raleigh was first with "The All Steel Bicycle" having developed bulge-formed steel bottom bracket shells to go along with their pressed steel lugs and thimble crown forks. start at 3:30 he https://www.youtube.com/watch?v=dqoGAXuE4eU also http://www.yellowjersey.org/photosfr...st/THIMBLE.JPG Where did they get commentators with those accents?! |
#8
|
|||
|
|||
FOLDING BIKE
On 12/2/2017 9:10 PM, LF wrote:
On Wednesday, November 22, 2017 at 10:30:49 PM UTC-5, wrote: NYT'S TRAVEL section gift list https://www.nytimes.com/guides/gifts...t-folding-bike Only time will tell. Dahon design flaws can show up after a while. For example, I was surprised to find the spoke nipples on my relatively high end Dahon Speed 7 were aluminum -- discovering this only after stress fractures dislodged the spokes. Why would the designers choose failure prone aluminum over the standard brass nipples? I was luckier than my friend, who's aluminum Dahon frame also developed stress fractures. Over time, many of the nuts and bolts rusted on various parts of my bike rusted. The Speed 7 looked good when I bought it. Over time, the design flaws blossomed. I have bikes that are older, and held together much better. Dahon showed one really nice folder at Interbike in September, the Curl i8. It's the only Dahon frame where the chain is on the inside when folded (like the Brompton). Very pricey. They only made 500 of them. Has a telescoping stem, like older Dahon models, but that was dropped on newer models to reduce weight and cost. https://dahon.com/news-story/35th-an...ble-pre-order/ The new management at Dahon is pretty clueless, following the death of Pete Mole. When I mentioned the fact that their 35th anniversary model had a big advantage of the chain being on the inside they had no idea why that would be something that anyone would care about, even though Brompton figured that out a long time ago. I have a Dahon Speed TR 3x7 which I really like. I've had it for probably 20 years now, and bought it when I had my folding bicycle website and Josh Hon gave me a good deal on it (40% off MSRP). Now he's moved on to Tern. |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Dahon Folding Bike vs Friday Folding Bike | [email protected] | General | 33 | January 6th 09 07:53 PM |
Folding Bike Fastest Folding Time Video | SMS | General | 2 | August 18th 07 10:22 AM |
Folding Bike Fastest Folding Time Video | SMS | Techniques | 2 | August 18th 07 10:22 AM |
Seeking folding bike travel case for S&S Coupled bike | robert perkins | General | 1 | July 25th 04 02:49 PM |
Seeking folding bike travel case for S&S Coupled bike | robert perkins | General | 0 | July 25th 04 06:55 AM |