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


Go Back   > >

Recumbent What IS that thing?! Recumbents may be odd looking, but they have many advantages over a "wedgie" bicycle. Discuss the in's and out's recumbent lifestyle in the recumbent forum.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 05-16-13, 06:56 PM   #1
chrisblessing
Junior Member
Thread Starter
 
Join Date: Apr 2013
Location: Kuala Lumpur, Malaysia
Bikes: Hand-built LWB recumbent, Cruzbike conversion on a SpeedOne 20" folding frame.
Posts: 13
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
20" recumbent and internally geared hub

Greetings,

I have a question I'm hoping some folks here might answer. I recently added an FSA Patterson-Metropolis CVT to my 20" recumbent. I'm running an SRAM 11-28 cluster. My gear inches went from 25-89 to 18-75. With only limited riding, I can say that I'm please with its performance. And it's nice to be able to climb the many hills here in Kuala Lumpur.

I'd next like to swap the SRAM for an internally geared hub. I'd like to keep the low gearing where it is, but get the high gearing to mid 90s or above. A Sturmey Archer XRF8 and the Nuvinci N360 both achieve this.

I'm aware of the weight of both, and of some issues regarding reliability with SA. One potential issue with the Nuvinci N360 is the input torque in the low gears. I regret that I'm not entirely clear how this works, but I don't want to have a setup that is outside the warranty.

As I'm in Malaysia where I won't have any support for either product, I need something less likely to fail. So, if you had to choose...?

Many thanks to those who respond.

Chris
chrisblessing is offline   Reply With Quote
Old 05-17-13, 01:58 PM   #2
osco53
Old Fart In Training
 
osco53's Avatar
 
Join Date: Oct 2012
Location: Central Florida
Bikes: Easy Racer Tour Easy LE, Sun EZ-3, Scott Spark 760 2014 Dahon Speed P8
Posts: 1,930
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
,,,A Larger Large Chaining ?,,,,,a Larger middle chaining ? to soften the step up ?,,,,,
osco53 is offline   Reply With Quote
Old 05-18-13, 06:35 AM   #3
chrisblessing
Junior Member
Thread Starter
 
Join Date: Apr 2013
Location: Kuala Lumpur, Malaysia
Bikes: Hand-built LWB recumbent, Cruzbike conversion on a SpeedOne 20" folding frame.
Posts: 13
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks osco53, but note that I just added an FSA Patterson-Metropolis CVT to replace my chainring. I'm afraid I'm stuck with the 28/45. In any event, the more I read the more confident I am that I'll not exceed the torque limit.
chrisblessing is offline   Reply With Quote
Old 05-18-13, 05:55 PM   #4
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Bikes: 7
Posts: 18,781
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 211 Post(s)
S-A 8 is 1:1 low and 7 overdrive gears , so say 20T cog.. [23, or 25t],
so the combination with the FSA Patterson-Metropolis 28 and the 45 ..

low is 28" the 8th gear in the hub is like 3.5:1 so that '44.8t' acts much bigger ..
pretty huge actually.

http://www.sturmey-archer.com/products/hubs/cid/5/id/6/specs/1

S-A , Sun Race , like so Much of the Bike Biz is Taiwan based,
so maybe a Hong Kong Connection, for service is available.

Last edited by fietsbob; 05-18-13 at 06:01 PM.
fietsbob 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 12:43 PM.