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 09-07-10, 02:16 PM   #1
JimmY_Brazil
Junior Member
Thread Starter
 
Join Date: May 2010
Location: Brasília, DF, Brazil
Bikes: 1992 Trek 800, 2008 Kona Fire Mountain
Posts: 23
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Dahon Eco3 BottomBracket upgrade? Which BB?

Hi there!
It's my first post at Folding Bikes section.
Recently, I bought this Dahon Eco3.

The problem is that its bottom bracket and crankset seem too fragile! I want to put a new crank and BB on it. But what kind of BB is this one that comes with Eco3?
Can I replace it by any other BB?
Can I use any BB from this list on my bike?
http://www.chainreactioncycles.com/C...rtBy=SalesRank

Thanks!
JimmY_Brazil is offline   Reply With Quote
Old 09-07-10, 02:32 PM   #2
Dynocoaster
Senior Member
 
Join Date: May 2004
Location: Pacific Northwest
Bikes: Too many....................
Posts: 3,075
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
According to the Dahon website the crank is cold forged and that should be pretty tough.
Dynocoaster is offline   Reply With Quote
Old 09-07-10, 02:53 PM   #3
JimmY_Brazil
Junior Member
Thread Starter
 
Join Date: May 2010
Location: Brasília, DF, Brazil
Bikes: 1992 Trek 800, 2008 Kona Fire Mountain
Posts: 23
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Dynocoaster View Post
According to the Dahon website the crank is cold forged and that should be pretty tough.

Yeah, that's true. Actually, the crankset is OK for me. The problem is the BB.
I believe it's a cup-and-cone BB. Can I replace it by a SealedCartridge BB?
JimmY_Brazil is offline   Reply With Quote
Old 09-07-10, 03:08 PM   #4
Dynocoaster
Senior Member
 
Join Date: May 2004
Location: Pacific Northwest
Bikes: Too many....................
Posts: 3,075
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I would get hold of Thor at www.thorusa.com and ask him what is available.
Dynocoaster is offline   Reply With Quote
Old 09-07-10, 03:28 PM   #5
JimmY_Brazil
Junior Member
Thread Starter
 
Join Date: May 2010
Location: Brasília, DF, Brazil
Bikes: 1992 Trek 800, 2008 Kona Fire Mountain
Posts: 23
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Dynocoaster View Post
I would get hold of Thor at www.thorusa.com and ask him what is available.
Just did this right now.
Thank you!
JimmY_Brazil is offline   Reply With Quote
Old 09-07-10, 03:37 PM   #6
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)
you can use any bottom bracket for square axle .... cup and cone is sometimes not so bad though ..:-) ( old school )

thor
__________________
www.thorusa.com
Dahon : Freedom Unfolds
Tern : all about the ride
brakemeister is offline   Reply With Quote
Old 09-07-10, 03:49 PM   #7
JimmY_Brazil
Junior Member
Thread Starter
 
Join Date: May 2010
Location: Brasília, DF, Brazil
Bikes: 1992 Trek 800, 2008 Kona Fire Mountain
Posts: 23
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by brakemeister View Post
you can use any bottom bracket for square axle .... cup and cone is sometimes not so bad though ..:-) ( old school )

thor
Wow, just saw your email right now! Hehe!
OK then, thank you very much.
I'm gonna replace it only when problems appear.
Another question, what are the measures of the Eco3/EcoD7 BB?

Thanks!
JimmY_Brazil is offline   Reply With Quote
Old 09-07-10, 04:12 PM   #8
AEO
Senior Member
 
AEO's Avatar
 
Join Date: Jun 2007
Location: A Coffin Called Earth. or Toronto, ON
Bikes: Bianchi, Miyata, Dahon, Rossin
Posts: 12,258
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
for that cheap stock crank, same one I removed, 122mm.
If nothing changed, that is.
__________________
Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
http://sanfrancisco.ibtimes.com/arti...ger-photos.htm
AEO is offline   Reply With Quote
Old 09-07-10, 04:58 PM   #9
JimmY_Brazil
Junior Member
Thread Starter
 
Join Date: May 2010
Location: Brasília, DF, Brazil
Bikes: 1992 Trek 800, 2008 Kona Fire Mountain
Posts: 23
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by AEO View Post
for that cheap stock crank, same one I removed, 122mm.
If nothing changed, that is.
Thank you!
What if I want a new crank? The measures of the BB change?
Do you have a pic of your bike with new BB and Crank?

Thanks!
JimmY_Brazil is offline   Reply With Quote
Old 09-07-10, 06:15 PM   #10
AEO
Senior Member
 
AEO's Avatar
 
Join Date: Jun 2007
Location: A Coffin Called Earth. or Toronto, ON
Bikes: Bianchi, Miyata, Dahon, Rossin
Posts: 12,258
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
a different crank will require different length almost every time.

I think I used a 117.5mm BB to set the ultegra/600 cranks out far enough so I could use the clamp on FD thor sells.
normally, you use ultegra/600 cranks with a 110 or 113mm BB.
__________________
Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
http://sanfrancisco.ibtimes.com/arti...ger-photos.htm
AEO is offline   Reply With Quote
Old 09-07-10, 07:11 PM   #11
JimmY_Brazil
Junior Member
Thread Starter
 
Join Date: May 2010
Location: Brasília, DF, Brazil
Bikes: 1992 Trek 800, 2008 Kona Fire Mountain
Posts: 23
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks sir!
JimmY_Brazil 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 05:48 PM.