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 02-23-12, 11:04 AM   #1
pnp
Junior Member
Thread Starter
 
Join Date: Feb 2012
Location: Buenos Aires, Argentina
Bikes: Dahon Mu P24
Posts: 15
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Driveline chain guard for my Dahon Mu P24: question and tips

Hi!..
I want to buy a Driveline chain guard:

http://www.ebay.com/itm/300654781353...84.m1436.l2648

I have the model / spec of the crankset that ships with the Dahon Mu P24 (for my 2009 model):
Sugino XD, cold-forged crank arms, 2014 alloy 46T chainring

I'm looking to know the size that I should be buying...

Should I look for a 46T? Is that the measure that I should be looking for? Or is there any other parameter or any other way that I could fit some "not 46t" chainguard into my bike?


Any tip regarding some other chainguard apart from the driveline chain guard?... (looks like it is not easy to find)

Thanks!..

PnP
pnp is offline   Reply With Quote
Old 02-23-12, 11:20 AM   #2
BruceMetras
Senior Member
 
Join Date: Aug 2005
Location: San Rafael, California
Bikes:
Posts: 1,872
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 10 Post(s)
Quote:
Originally Posted by pnp View Post
Hi!..
I want to buy a Driveline chain guard:

http://www.ebay.com/itm/300654781353...84.m1436.l2648

I have the model / spec of the crankset that ships with the Dahon Mu P24 (for my 2009 model):
Sugino XD, cold-forged crank arms, 2014 alloy 46T chainring

I'm looking to know the size that I should be buying...

Should I look for a 46T? Is that the measure that I should be looking for? Or is there any other parameter or any other way that I could fit some "not 46t" chainguard into my bike?


Any tip regarding some other chainguard apart from the driveline chain guard?... (looks like it is not easy to find)

Thanks!..

PnP
From the picture off of the Dahon Site, if yours looks like the one pictured, then the Driveline chainguard will not work.. the original composite guard screws onto the chain ring and does not bolt to the crank spider..
BruceMetras is offline   Reply With Quote
Old 02-23-12, 11:23 AM   #3
pnp
Junior Member
Thread Starter
 
Join Date: Feb 2012
Location: Buenos Aires, Argentina
Bikes: Dahon Mu P24
Posts: 15
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
OOopps that's really bad!... Do you know any other chain guard similar to the Driveline that I could use? (I just want to change the one that comes with the bike, as it is kinda old and worn out)...
Thanks!
pnp is offline   Reply With Quote
Old 02-23-12, 02:28 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)
I am pretty sure the bolt circle is 110 mm on that crank ... if they make one for that boltcircle in the correct chainring size ( 53 ?) than you are golden, just unscrew the original Dahon thing and add the new alloy one... You might need longer chainring bolts also ...

thor
__________________
www.thorusa.com
Dahon : Freedom Unfolds
Tern : all about the ride
brakemeister is offline   Reply With Quote
Old 02-23-12, 04:19 PM   #5
badmother
Senior Member
 
badmother's Avatar
 
Join Date: Nov 2007
Bikes:
Posts: 3,191
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 38 Post(s)
Did you look at the Biologic Freedrive? I want to try it on a bike or two this summer. http://www.thorusa.com/accessories/biologic.htm Scroll down.
badmother is offline   Reply With Quote
Old 02-23-12, 05:05 PM   #6
kamtsa
Senior Member
 
kamtsa's Avatar
 
Join Date: Dec 2008
Bikes:
Posts: 1,815
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by badmother View Post
Did you look at the Biologic Freedrive? I want to try it on a bike or two this summer. http://www.thorusa.com/accessories/biologic.htm Scroll down.
With a rear derailleur?

pnp, did you try your local Dahon dealer?

Last edited by kamtsa; 02-23-12 at 06:43 PM.
kamtsa is offline   Reply With Quote
Old 02-23-12, 05:28 PM   #7
2_i 
Senior Member
 
Join Date: Sep 2005
Location: Michigan
Bikes: Trek 730, Bike Friday NWT, Brompton M6R*2, Trek 830, Trek 720, Dahon HAT060, Dahon HT060,...
Posts: 1,549
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Quote:
Originally Posted by pnp View Post
I have the model / spec of the crankset that ships with the Dahon Mu P24 (for my 2009 model):
Sugino XD, cold-forged crank arms, 2014 alloy 46T chainring

I'm looking to know the size that I should be buying...

Should I look for a 46T? Is that the measure that I should be looking for? Or is there any other parameter or any other way that I could fit some "not 46t" chainguard into my bike?
The rule is 4T more than the largest chainring, i.e. 50T for you. I started with a Driveline on a NWT and it worked there so well that I promoted it to my standard chain guard solution. What worries me, though, is that without the FD but RD there, the original guard acts likely also as a chain guide that you cannot afford to give up.
2_i is offline   Reply With Quote
Old 02-23-12, 11:32 PM   #8
pnp
Junior Member
Thread Starter
 
Join Date: Feb 2012
Location: Buenos Aires, Argentina
Bikes: Dahon Mu P24
Posts: 15
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by badmother View Post
Did you look at the Biologic Freedrive? I want to try it on a bike or two this summer. http://www.thorusa.com/accessories/biologic.htm Scroll down.
Well... I heard different (positive and negative) reviews of the biologic freedrive.
I dont want that for now!... I think that I have to, at least, see it on a bike and check if it is all about dust inside...

Thanks anyway!..

PnP
pnp is offline   Reply With Quote
Old 02-24-12, 12:14 AM   #9
vmaniqui
Senior Member
 
Join Date: Jan 2009
Location: Bay Area, SF California
Bikes: Citizen Tokyo, A-Bike, Dahon Boardwalk D6, Dahon Boardwalk D7, Dahon Curve D3, Dahon Mu XL, BF Tikit2, Dahon Speed TR, Dahon Curve SL.
Posts: 1,504
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
i have changed the chainguards on my speed tr and curve sl with drivelines. if you can get the exact size these chainguards are great. here's how to check bcd (bolt circle diameter) of your p24. http://www.hostelshoppe.com/tech_bol...e_diameter.php
vmaniqui is offline   Reply With Quote
Old 02-24-12, 09:51 AM   #10
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)
Reading through this it looks to me that you need to talk to a bike dealer .... This is all pretty easy if you do know the terminology and the different measuremnts and all.... only takes about 10 years working in the bike industry ...

Why I am saying this ? Its pretty simple to understand that a freedrive ONLY works with a non derrailleur equipped bike. A one speed or a bike with an internal hub.... no chaintensioner no nothing .....

and we are discussing ii that thing is worthwhile ?
As I said there are 3 or more issues here, which are all very different nature ...
-------------

1. you need to find out the bolt circle ..I think its 110 but not sure ....
2. your teeth ....
3. you will need the correct chainring bolt length to add the protector to the crankarms... most likely the provided bolts are too long, as they are meant to be put on a double, versus the single. And the existing bolts might or might not be long enough as they are designed for a single.
4. you will need to unsrew the plastic original ring

again ... I think that we are over our heads here, as we throw in several different things into one pot... best if a pro gets involved with your bike at hand

thor
__________________
www.thorusa.com
Dahon : Freedom Unfolds
Tern : all about the ride
brakemeister is offline   Reply With Quote
Old 02-24-12, 01:48 PM   #11
badmother
Senior Member
 
badmother's Avatar
 
Join Date: Nov 2007
Bikes:
Posts: 3,191
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 38 Post(s)
Quote:
Originally Posted by kamtsa View Post
With a rear derailleur?

pnp, did you try your local Dahon dealer?

Sorry, did not pay enough attention! It is all IGH in my head at the moment.
badmother 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 05:35 PM.