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.

Reply
 
Thread Tools Search this Thread
Old 09-17-13, 09:55 AM   #1
Winfried
Senior Member
Thread Starter
 
Winfried's Avatar
 
Join Date: Aug 2011
Location: Paris, France
Bikes:
Posts: 1,142
A couple of questions about two models from Dahon

Hello

I went through the Dahon global site looking for faster bikes, and have the following questions:

Dr. Hon
  • Gear Inches 92"- 304". 304 * 0.079 = 24,016m. Can't be. Is this a typo?

Mu P27
  • What are the gear inches?
  • SRAM 3 x 9 SPEED DUALDRIVE II (FINGER TAP SHIFTERS): How well does this derailleur + hub thingie work in practice?


Thank you.
Winfried is offline   Reply With Quote
Old 09-17-13, 03:54 PM   #2
dynaryder
PatronSaintOfDiscBrakes
 
dynaryder's Avatar
 
Join Date: Apr 2005
Location: BicycleSPACE warehouse in SW Washington DC
Bikes:
Posts: 6,985
Sheldon says the Dr is 32.3 - 94.1".

He says the Mu is about 21 - 120.3"(crank length not given).

Dual Drive systems work well,they just add weight and complicate wheel removal somewhat. You'll have to carry a 15mm wrench for the hub's nuts(no QR) and you'll have to pop off the shifter box. On the plus side you can shift your 'triple' at a complete stop.
__________________

C'dale BBU('05 and '09)/Super Six/Hooligan8and 3,Kona Dew Deluxe,Novara Buzz/Safari,Surly Big Dummy,Marin Pt Reyes,Giant Defy 1,Schwinn DBX SuperSport,Dahon Speed Pro TT,Brompton S6L/S2E-X
dynaryder is offline   Reply With Quote
Old 09-18-13, 12:28 AM   #3
bhkyte
Senior Member
 
bhkyte's Avatar
 
Join Date: Sep 2008
Location: York UK
Bikes: 2X dualdrive Mezzo folder,plus others
Posts: 2,776
Hi.
Dual drive does add a little weight, but its not as much as people often believe.
I looked in to this using the weight weenie site and came to the conclusion it was about half a kilo heavier than a equivalent set up using a front triple.
bhkyte is offline   Reply With Quote
Old 09-18-13, 03:45 PM   #4
dynaryder
PatronSaintOfDiscBrakes
 
dynaryder's Avatar
 
Join Date: Apr 2005
Location: BicycleSPACE warehouse in SW Washington DC
Bikes:
Posts: 6,985
I'm pretty sure it adds more than that. The rear wheel on my SPTT weighs 3lbs 11oz w/cassette. I'm not going to pull the wheel off my Mu and weigh it(it's a low spoke Kinetix so apples/oranges anyway),but there's def a big difference. A front der and triple aren't going to add that much more weight.
__________________

C'dale BBU('05 and '09)/Super Six/Hooligan8and 3,Kona Dew Deluxe,Novara Buzz/Safari,Surly Big Dummy,Marin Pt Reyes,Giant Defy 1,Schwinn DBX SuperSport,Dahon Speed Pro TT,Brompton S6L/S2E-X
dynaryder is offline   Reply With Quote
Old 09-19-13, 12:06 AM   #5
bhkyte
Senior Member
 
bhkyte's Avatar
 
Join Date: Sep 2008
Location: York UK
Bikes: 2X dualdrive Mezzo folder,plus others
Posts: 2,776
Yes its quite hard to do a direct compairasion. But it is surprising when you add up the weight of a tripple the front mech etc.
bhkyte 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 01:06 AM.