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 01-26-08, 10:47 PM   #1
bellweatherman
Senior Member
Thread Starter
 
bellweatherman's Avatar
 
Join Date: Aug 2005
Location: Austin
Bikes: Too many to count
Posts: 2,103
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Using an indoor trainer with a 20" wheeled folder?

OK, this is going to sound stupid, but does anyone know if there is an indoor trainer out there that will fit onto a 20" rear wheel? Well, is there such a beast?
bellweatherman is offline   Reply With Quote
Old 01-27-08, 12:08 AM   #2
Rincewind8
Radfahrer
 
Rincewind8's Avatar
 
Join Date: Mar 2004
Bikes:
Posts: 656
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by bellweatherman View Post
OK, this is going to sound stupid, but does anyone know if there is an indoor trainer out there that will fit onto a 20" rear wheel? Well, is there such a beast?
The 1upusa trainer apparently is adjustable to fit 16"-29" wheels, but it's pricey. Others might fit, too.
__________________
TH 1.81 (133kg*62)
Rincewind8 is offline   Reply With Quote
Old 01-27-08, 02:07 AM   #3
4cmd3
Senior Member
 
Join Date: Jul 2006
Bikes:
Posts: 375
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
CycleOps sells an adapter for 20" wheel bikes that will work with their trainers.
http://www.cycleops.com/

I believe some other manufacturers sell similar adapters for their products - but not all
4cmd3 is offline   Reply With Quote
Old 01-27-08, 04:34 AM   #4
Ericx25
Commuter
 
Ericx25's Avatar
 
Join Date: Dec 2005
Location: Grand Duchy of Luxembourg
Bikes: Fort Trekking, Xootr, Dahon Impulse, Bike Friday NWT
Posts: 54
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I use an ELITE Crono Fluid.

No problem. No need for an adapter for any of my folders : SWIFT, Bike Friday NWT , Dahon.

Last edited by Ericx25; 01-27-08 at 04:58 AM.
Ericx25 is offline   Reply With Quote
Old 01-27-08, 09:45 AM   #5
brommie
Senior Member
 
brommie's Avatar
 
Join Date: Aug 2007
Bikes: Brompton T6, Koga Miyata Distance, Airnimal Joey
Posts: 155
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
16 inch

Did you try it with a 16 inch. I would like to bike indoors with my Brommie, just to keep fit in wintertimes.

Plooifiets
brommie is offline   Reply With Quote
Old 01-27-08, 11:22 AM   #6
Giro
Senior Member
 
Join Date: Aug 2007
Location: USA
Bikes:
Posts: 501
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Kurt Kinetic has a small wheel adapter for wheels down to 16" diameter LINK.

The Kurt Kinetic models and the 1Up are both well regarded trainers on these forums as a search on "1Up" or "Kurt Kinetic" will demonstrate. The fluid Kurt Kinetic models and the 1Up are also fairly quiet; a smooth surfaced tire also helps. The dedicated trainer tire, Continental's Hometrainer, is not available in your wheel size.
Giro is offline   Reply With Quote
Old 01-27-08, 03:20 PM   #7
14R
Bromptonaut
 
14R's Avatar
 
Join Date: Feb 2005
Location: Jersey City, NJ
Bikes: 2012 Brompton S6R;1993 Diamond Back Racing Prevail ti; 2003 Litespeed Firenze; 1994 Diamond BAck Axis TT
Posts: 1,681
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
What about the rollers? Are they suppose to be better anyway?
14R is offline   Reply With Quote
Old 01-27-08, 08:43 PM   #8
Giro
Senior Member
 
Join Date: Aug 2007
Location: USA
Bikes:
Posts: 501
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Rollers & 20" wheel might be challenging for watts & balance

Quote:
Originally Posted by 14R View Post
What about the rollers? Are they suppose to be better anyway?
Rollers that I am familiar with have a fixed distance between the two rear rollers. The smaller wheel would drop down between them more, resulting in higher forces on the rear tire since it is more "wedged" between the rollers. Unless rollers have a separate drag unit (fan, magnetic, etc.), most of the resistance comes from tire deformation LINK. Thus unless you drilled new holes for one of the rear rollers, the resistance might be relatively high. Even then, I suspect smaller diameter wheels just by themselves give more resistance on a rollers.

Second, balancing on rollers is largely dependent on spinning the front wheel at reasonable speed for the gyroscopic effect (except for those exceptional cyclists who can even track-stand on rollers). The smaller diameter wheels would have less of this (unless you put a weighted strip of lead or something inside the rim instead of rim tape to increase the wheel's moment of inertia). Thus balancing would be even more difficult.

Undoubtedly it could be done, but it would not be easy. Large diameter rollers (4.5") would helpful.
Giro is offline   Reply With Quote
Old 01-29-08, 12:45 PM   #9
bellweatherman
Senior Member
Thread Starter
 
bellweatherman's Avatar
 
Join Date: Aug 2005
Location: Austin
Bikes: Too many to count
Posts: 2,103
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Giro View Post
Kurt Kinetic has a small wheel adapter for wheels down to 16" diameter LINK.

The Kurt Kinetic models and the 1Up are both well regarded trainers on these forums as a search on "1Up" or "Kurt Kinetic" will demonstrate. The fluid Kurt Kinetic models and the 1Up are also fairly quiet; a smooth surfaced tire also helps. The dedicated trainer tire, Continental's Hometrainer, is not available in your wheel size.



That adaptor from the Kurt Kinetic website looks like it might work ok. I'm going on the cheap and probably will buy a trainer from like Performance or Nashbar. I've never owned an indoor trainer before so I'm not really sure how about how the rear tire touches the trainer. Does anyone know if this adaptor might fit on any run-of-the-mill trainer?

bellweatherman is offline   Reply With Quote
Old 01-29-08, 09:26 PM   #10
Bop
Journey-man
 
Join Date: Mar 2006
Location: Juneau, Alaska
Bikes: Custom S&S coupled cross bike and a custom S&S coupled 29er single speed
Posts: 97
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Undoubtedly it could be done, but it would not be easy. Large diameter rollers (4.5") would helpful.[/QUOTE]

I keep my Swift at the office for use when I travel. I just took my rollers there for lack of space at home. Lo and behold the Swift fits just the same as my roadie, at least wheelbase-wise. No adjustment of the rollers was necessary. Indeed it is a bit wild. Greater effort and concentration is needed, but most of what you say is academic. Yes it's more difficult but all the more reason to try, eh?.

All the riders at the office are getting a big laugh out of riding the Swift on rollers. Some of us might even get good at it.
Bop is offline   Reply With Quote
Old 01-30-08, 06:23 AM   #11
social suicide
Senior Member
 
social suicide's Avatar
 
Join Date: Oct 2007
Location: Marquette
Bikes:
Posts: 673
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I rode my 16" schwinn run-a-bout on a treadmill. Not much room for those stingray handlebars though....Balances above 7.5mph but don't hit the stik-shift with your knee into first or things get interesting quick!
social suicide is offline   Reply With Quote
Old 03-20-11, 08:43 PM   #12
mdfolders
mdfolders
 
mdfolders's Avatar
 
Join Date: Dec 2010
Location: Maryland
Bikes: Bike Friday, Dahon, Kestrel, Rayleigh
Posts: 5
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Training rollers with 20" Bike Friday folder

This Youtube video shows you how to ride rollers with a folding bike.

This is using a simple step ladder available from hardware stores.

Actually I find the 20" format easier to ride on rollers than full sized bike.

Enjoy.
mdfolders is offline   Reply With Quote
Old 03-20-11, 09:03 PM   #13
bored117 
Senior Member
 
Join Date: Jun 2010
Location: Riverside, CA
Bikes: Helium SL DA DI2, Defy Advanced 0 Di2, 6KU Fixie
Posts: 1,041
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Roller works just fine with 20". I have ravel Trac Technique PRO Alloy Rollers from Performance bikes... (Got it just around $90 after tax and all when they had sales coupon with misprinted pricing somewhere I managed to match up for..)
It is similar to real road effort up to about 17-18mph for my bike configuration (scorcher 20x1.5" on dahon Speed TR). Beyond that, it's easier on roller probably due to lack of air resistance really (but I am not usually going for recover ride or zone 2,3 on the roller anyways).
Didn't really need to adjust anything for it to be useful... I use it when I didn't get a ride out for more than couple of days to keep my leg in tune.
bored117 is offline   Reply With Quote
Old 03-20-11, 09:51 PM   #14
fwd-bwd
Senior Member
 
Join Date: Feb 2009
Bikes:
Posts: 218
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Sportcrafters makes a mini roller trainer for rear wheel only:
http://www.sportcrafters.com/minirollers.htm

Redline (rebranded Minoura) has a rim drive trainer that does not touch the tire, thus no tire wear:
http://www.redlinebicycles.com/components/trainer
http://www.minourausa.com/japan/trai.../erda2024.html
fwd-bwd is offline   Reply With Quote
Old 03-21-11, 12:46 AM   #15
Folding-Bikes
Senior Member
 
Folding-Bikes's Avatar
 
Join Date: Oct 2009
Location: London
Bikes: Pacific-Reach SL
Posts: 302
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Yes!



Quote:
Originally Posted by 14R View Post
What about the rollers? Are they suppose to be better anyway?
Rollers too Nice video btw mfolder! thanks for sharing
Folding-Bikes is offline   Reply With Quote
Old 03-21-11, 01:16 AM   #16
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Bikes: 7
Posts: 18,841
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 223 Post(s)
Rollers are about wheel base length not wheel size

I have a foam plastic captive air tire perfect for a trainer, its a significant rolling resistance on the road

but workout is what riding on a trainer is all about, so I won't matter..
fietsbob is offline   Reply With Quote
Old 03-21-11, 06:52 AM   #17
Bacciagalupe
Professional Fuss-Budget
 
Bacciagalupe's Avatar
 
Join Date: Aug 2005
Bikes:
Posts: 6,438
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
And out of left field...

What about an exercise / stationary bike? They aren't all that much more expensive than a trainer, only need to be set up once, and won't wear down your tires.
Bacciagalupe is offline   Reply With Quote
Old 03-21-11, 09:37 AM   #18
chucky
It's got electrolytes!
 
chucky's Avatar
 
Join Date: Aug 2009
Bikes: Self-designed carbon fiber highracer, BikesDirect Kilo WT5, Pacific Cycles Carryme, Dahon Boardwalk with custom Sturmey Archer wheelset
Posts: 1,388
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by fwd-bwd View Post
Redline (rebranded Minoura) has a rim drive trainer that does not touch the tire, thus no tire wear:
http://www.redlinebicycles.com/components/trainer
http://www.minourausa.com/japan/trai.../erda2024.html
Nice find.
chucky is offline   Reply With Quote
Old 03-27-11, 08:09 AM   #19
special_k
Senior Member
 
Join Date: Sep 2007
Location: Baltimore, MD
Bikes:
Posts: 202
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by fwd-bwd View Post

Redline (rebranded Minoura) has a rim drive trainer that does not touch the tire, thus no tire wear:
http://www.redlinebicycles.com/components/trainer
http://www.minourausa.com/japan/trai.../erda2024.html
I have one of those I'm looking to sell...Worked great on my mini velo with 451mm tires too.
special_k 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 01:35 AM.