Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Folding Bikes Discuss the unique features and issues of folding bikes. Also a great place to learn what folding bike will work best for your needs.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 01-22-08, 05:04 PM   #1
pismocycleguy
Senior Member
Thread Starter
 
Join Date: Aug 2007
Location: Pismo Beach, CA
Bikes:
Posts: 114
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Dahon Lock Jaw Hinges

I notice a lot of the newer Dahon folding bikes come with Lock Jaw folding hinges. I have been unable to find a picture of these hinges. I would also like to see the folding in action. Where can I find a picture of these hinges, both static and dynamic pictures would be great.
Any commentary on the strength and/or durability and stability of these newer Dahon hinges?
Regards,
PCG
pismocycleguy is offline   Reply With Quote
Old 01-23-08, 08:58 PM   #2
pismocycleguy
Senior Member
Thread Starter
 
Join Date: Aug 2007
Location: Pismo Beach, CA
Bikes:
Posts: 114
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Well, I guess the Dahon Lock Jaw folding hinge is a very well kept secret!
Or, Dahon has never sold a bike with this hinge arrangment?
PCG
pismocycleguy is offline   Reply With Quote
Old 01-23-08, 09:09 PM   #3
brakemeister 
New usename ThorUSA
 
brakemeister's Avatar
 
Join Date: Nov 2004
Location: Southern Illinois USA
Bikes:
Posts: 2,469
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
http://www.dahon.com/technology/frame/lockjaw.htm

there is a pick and a little explanation as well

thor
__________________
www.thorusa.com
Dahon : Freedom Unfolds
Tern : all about the ride
brakemeister is offline   Reply With Quote
Old 01-23-08, 09:10 PM   #4
brakemeister 
New usename ThorUSA
 
brakemeister's Avatar
 
Join Date: Nov 2004
Location: Southern Illinois USA
Bikes:
Posts: 2,469
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
pick a pic
I mean ...lol
__________________
www.thorusa.com
Dahon : Freedom Unfolds
Tern : all about the ride
brakemeister is offline   Reply With Quote
Old 01-25-08, 03:45 PM   #5
CRM
Mernber
 
CRM's Avatar
 
Join Date: Aug 2004
Location: G'ville, FL / Rossie, MA
Bikes: '03 Dahon Speed 8 / '06 Dahon Boardwalk S1 Fixed
Posts: 40
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I just converted my Cadenza to fixed gear. Hopefully the hinges will hold up to the extra stress. I'll post more comments after several rides (maybe some pics a little sooner).
CRM is offline   Reply With Quote
Old 01-25-08, 08:57 PM   #6
pismocycleguy
Senior Member
Thread Starter
 
Join Date: Aug 2007
Location: Pismo Beach, CA
Bikes:
Posts: 114
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Chuck
What model year is your Cadenza?
Does it have the newer Lock Jaw Hinges?
I will be waiting to read your next post after your experiment.
PCG
pismocycleguy is offline   Reply With Quote
Old 02-02-08, 11:00 PM   #7
CRM
Mernber
 
CRM's Avatar
 
Join Date: Aug 2004
Location: G'ville, FL / Rossie, MA
Bikes: '03 Dahon Speed 8 / '06 Dahon Boardwalk S1 Fixed
Posts: 40
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
It's a 2007 model. The first one with lock jaw.

I just wrapped the drop bars that I put on it today so I'll have pics soon.
CRM is offline   Reply With Quote
Old 02-03-08, 12:33 AM   #8
Foldable Two
Senior Member
 
Foldable Two's Avatar
 
Join Date: Aug 2005
Location: Vancouver, Washington and Ocean Shores, Washington, USA
Bikes: 2 - 2007 Custom Bike Fridays, 2 - 2009 Bike Friday Pocket 8's, Gravity 29'er SS, 2 - 8-spd Windsor City Bikes, 1973 Raleigh 20 & a 1964 Schwinn Tiger
Posts: 1,319
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I just saw a picture of one on the "Crazy Guy on a Bike" website.

They were riding full sized Dahon folders around India. You can see the picture below and the bikes on this web page:

http://www.crazyguyonabike.com/doc/p...=Fa#pic_241655
Attached Images
File Type: jpg DSC06345.JPG (29.1 KB, 70 views)
Foldable Two is offline   Reply With Quote
Old 02-13-08, 12:32 PM   #9
pismocycleguy
Senior Member
Thread Starter
 
Join Date: Aug 2007
Location: Pismo Beach, CA
Bikes:
Posts: 114
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The Dahon Lock Jaw hinges appear to be constructed of aluminum. Aluminum is quite a soft metal. I wonder how the aluminum locking surfaces will hold up with a routine of folding and unfolding. It seems to me that the soft metal will be compressed and worn away in the locking area and become less than tight after several months of use. Any first hand experience with the durability of the mating locking surfaces?
I would hate to end up with an articulated bicycle frame. I wonder what the warranty by the manufacturer is for this frame hinge?
PCG
pismocycleguy is offline   Reply With Quote
Old 09-12-10, 09:14 AM   #10
tiger474
Junior Member
 
tiger474's Avatar
 
Join Date: May 2007
Bikes:
Posts: 18
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
from taipei cycle show

http://www.flickr.com/photos/davidon...7623518983167/
tiger474 is offline   Reply With Quote
Old 12-10-15, 05:18 AM   #11
Winfried
Senior Member
 
Winfried's Avatar
 
Join Date: Aug 2011
Location: Paris, France
Bikes:
Posts: 1,160
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
At this point, Dahon's website only mentions the Dash D18 and the very pricey Clinch:
DAHON Bikes:*Folding Bikes by DAHON

Does it mean the other lockjaw-based models (Smooth Hound and Bullhead) are no longer manufactured?
Winfried is offline   Reply With Quote
Old 12-10-15, 11:37 AM   #12
Ozonation
Senior Member
 
Ozonation's Avatar
 
Join Date: Apr 2012
Location: Ontario, Canada
Bikes: Rivendell Sam Hillborne DTT in Awesome Green; Brompton M6R (reduced gearing) in Sage Green; GT Timberline Hybrid (10 years old!)
Posts: 1,014
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Winfried View Post
At this point, Dahon's website only mentions the Dash D18 and the very pricey Clinch:
DAHON Bikes:*Folding Bikes by DAHON

Does it mean the other lockjaw-based models (Smooth Hound and Bullhead) are no longer manufactured?
I believe the Smooth Hound, Bullhead, and other similar 1st or even 2nd gen lock jaw bikes are no longer available. I looked into getting one for quite a while, and had to really scour the web to even find used ones. I think the Dash D18 is the latest version of this bike format.

I came across some of the same concerns (integrity of the lock jaw over extended use) in other forums. My impression is that the bike is first a minivelo that if you have to fold, then you can do so. But if you're folding it in and out day after day, you'd be better off with a folder that's designed expressly for folding.
Ozonation is offline   Reply With Quote
Old 12-10-15, 01:37 PM   #13
ThorUSA
Senior Member
 
ThorUSA's Avatar
 
Join Date: Dec 2013
Location: Olney Illinois USA
Bikes: to many
Posts: 634
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Quote:
Originally Posted by Ozonation View Post
I believe the Smooth Hound, Bullhead, and other similar 1st or even 2nd gen lock jaw bikes are no longer available. I looked into getting one for quite a while, and had to really scour the web to even find used ones. I think the Dash D18 is the latest version of this bike format.

I came across some of the same concerns (integrity of the lock jaw over extended use) in other forums. My impression is that the bike is first a minivelo that if you have to fold, then you can do so. But if you're folding it in and out day after day, you'd be better off with a folder that's designed expressly for folding.
agree ....however , never heard of frame failure yet. do sell about 6 bolt kits every year ( aroud the world)
ThorUSA is offline   Reply With Quote
Old 12-10-15, 02:44 PM   #14
Ozonation
Senior Member
 
Ozonation's Avatar
 
Join Date: Apr 2012
Location: Ontario, Canada
Bikes: Rivendell Sam Hillborne DTT in Awesome Green; Brompton M6R (reduced gearing) in Sage Green; GT Timberline Hybrid (10 years old!)
Posts: 1,014
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by ThorUSA View Post
agree ....however , never heard of frame failure yet. do sell about 6 bolt kits every year ( aroud the world)
You're probably correct. I think what I read dealt more with issues for the bolting system, rather than the frame itself.
Ozonation is offline   Reply With Quote
Old 01-22-16, 10:15 PM   #15
Abu Mahendra
Senior Member
 
Join Date: Jan 2016
Location: Bali
Bikes: Dahon Dash P18, Dahon Dash Altena.
Posts: 498
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 36 Post(s)
Quote:
Originally Posted by Ozonation View Post
I believe the Smooth Hound, Bullhead, and other similar 1st or even 2nd gen lock jaw bikes are no longer available. I looked into getting one for quite a while, and had to really scour the web to even find used ones. I think the Dash D18 is the latest version of this bike format.

I came across some of the same concerns (integrity of the lock jaw over extended use) in other forums. My impression is that the bike is first a minivelo that if you have to fold, then you can do so. But if you're folding it in and out day after day, you'd be better off with a folder that's designed expressly for folding.
New year-2015 Dahon Dash D18 can be found relatively easily in Malaysia. They are quite low specced out, though. New Dahon Dash P18 or XPs are out of production now, I believe. Dahon Dash Altena is available if you look for them. These are Japanese-market bikes where mini velos have more currency. I just bought a new one--well, just the frame, fork, stem and headset--in Singapore.


Last edited by Abu Mahendra; 01-22-16 at 10:19 PM.
Abu Mahendra is offline   Reply With Quote
Old 01-23-16, 08:34 AM   #16
dezzie
Senior Member
 
Join Date: Dec 2013
Location: Newcastle upon Tyne
Bikes: Xootr swift, Moulton Speed, Moulton Major.
Posts: 317
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Bicycle hero sell them from Korea - Folding Bike - Bikes

I like the Dash x20 - Dahon Dash X20 Folding Bike 2015
dezzie is offline   Reply With Quote
Old 01-23-16, 06:57 PM   #17
Abu Mahendra
Senior Member
 
Join Date: Jan 2016
Location: Bali
Bikes: Dahon Dash P18, Dahon Dash Altena.
Posts: 498
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 36 Post(s)
I own a Dash P18 and a Dash Altena. The Dash XP is the same frame as the Dash P18 and D18, just tricked out with road components. They are all 406 wheels. The Dahon Dash Altena has a different frame geometry, closer to a classic road bike, altogether with 451 wheels. Like so:
Abu Mahendra is offline   Reply With Quote
Old 01-29-16, 09:32 PM   #18
Abu Mahendra
Senior Member
 
Join Date: Jan 2016
Location: Bali
Bikes: Dahon Dash P18, Dahon Dash Altena.
Posts: 498
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 36 Post(s)
Quote:
Originally Posted by Foldable Two View Post
I just saw a picture of one on the "Crazy Guy on a Bike" website.

They were riding full sized Dahon folders around India. You can see the picture below and the bikes on this web page:

South India Mini Tour: Pre-Trip Stuff: Building bikes, planning a route and gear
That's a first gen LockJaw hinge, I believe. It's now in its third generation.

If ungreased the hinge will creak a little. Oil it, and it goes away.
Abu Mahendra is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 06:54 PM.