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 09-13-11, 06:18 PM   #1
ubringliten
Senior Member
Thread Starter
 
ubringliten's Avatar
 
Join Date: Sep 2010
Location: Oakland, CA
Bikes: 2010 Wabi Lightning, 2014 Brompton S2L-X
Posts: 213
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Bromptons worsen lower back pain?

Hi folks,

I was at Clever Cycles in Portland and was so close in getting the Brompton M until it was a little too bumpy on a test ride. I have lower back pain/soreness that is tolerable but I am scared of the bumpiness that might worsen it. I think the upright position is good but is it good enough to counter the bumpiness? Right now I have a fixed gear that I am thinking of converting to single speed (and raising the handlebar is another option but it would look awkward with the frame-style) which I hope can help with my lower back, if not I will forgo the bike, and getting the Brompton might help even more. I am not getting the Brompton solely for this reason. I think it just a really versatile bike.

Thanks!

Chris
ubringliten is offline   Reply With Quote
Old 09-13-11, 06:38 PM   #2
CSG
Senior Member
 
Join Date: May 2002
Location: Idaho
Bikes: 2002 Novara Ponderosa HT MTB, 2011 Brompton ML6
Posts: 214
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
How were the tires inflated and which tires were they? Which suspension block was on the bike?
CSG is offline   Reply With Quote
Old 09-13-11, 06:46 PM   #3
ubringliten
Senior Member
Thread Starter
 
ubringliten's Avatar
 
Join Date: Sep 2010
Location: Oakland, CA
Bikes: 2010 Wabi Lightning, 2014 Brompton S2L-X
Posts: 213
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by CSG View Post
How were the tires inflated and which tires were they? Which suspension block was on the bike?
All good questions but no idea. I asked the worker and she said that I can change out the block which means I probably got the firm one. So there are different suspension blocks?

Thanks,

Chris
ubringliten is offline   Reply With Quote
Old 09-13-11, 06:51 PM   #4
CSG
Senior Member
 
Join Date: May 2002
Location: Idaho
Bikes: 2002 Novara Ponderosa HT MTB, 2011 Brompton ML6
Posts: 214
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
I'd head over to Brompton's website and do a little research. Once you're informed you'll have a better idea what you'll need and will work for you. Just stay away from Calhoun Cycles out of Minnesota!
CSG is offline   Reply With Quote
Old 09-13-11, 10:44 PM   #5
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Bikes: 7
Posts: 22,221
Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 1146 Post(s)
Shown at this years Euro bike trade show, reported here,
in the pipeline is a different steerer tube riser , about 3" higher M bar setup..
given the name H bar.. might offer the fit you want.

if you get the telescopic seatpost option, it's possible to add a suspension seat post
Substituted, in the upper section ..

Last edited by fietsbob; 09-14-11 at 10:13 AM.
fietsbob is offline   Reply With Quote
Old 09-13-11, 11:31 PM   #6
pacificcyclist
Senior Member
 
Join Date: Dec 2007
Location: Canada
Bikes: 2012 Masi Speciale CX : 2013 Ghost 29er EBS
Posts: 918
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by ubringliten View Post
Hi folks,

I was at Clever Cycles in Portland and was so close in getting the Brompton M until it was a little too bumpy on a test ride. I have lower back pain/soreness that is tolerable but I am scared of the bumpiness that might worsen it. I think the upright position is good but is it good enough to counter the bumpiness? Right now I have a fixed gear that I am thinking of converting to single speed (and raising the handlebar is another option but it would look awkward with the frame-style) which I hope can help with my lower back, if not I will forgo the bike, and getting the Brompton might help even more. I am not getting the Brompton solely for this reason. I think it just a really versatile bike.

Thanks!

Chris
Chris,

You are going to feel more bumpiness and a harsher ride with the Brompton's smaller wheels, albeit pretty much all the folders running small wheels. You can combat this by running with a lower rear tire pressure, plus choosing the standard suspension rather than firm for more comfort. If that's not enough for you, you can add options for a suspension seatpost.
pacificcyclist is offline   Reply With Quote
Old 09-14-11, 04:39 AM   #7
chagzuki
Senior Member
 
Join Date: Jul 2008
Bikes: Brompton, Dahon Vitesse D5
Posts: 1,871
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
I have the standard block and the suspension works very well for me. The same can't be said for the front end where rough surfaces can result in extreme vibrations coming through the bars, but in terms of cushioning the spine the rear suspension is great, I think.
chagzuki is offline   Reply With Quote
Old 09-14-11, 06:54 AM   #8
bendembroski
My legs hurt
 
Join Date: Apr 2008
Location: Farther behind you than I'd like to be
Bikes: Vaya, Brompton, '73 Schwinn Super Sport, Cresswell Fold-it, '81 Trek 610
Posts: 683
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
+1. Add a sprung saddle, and the rear half is as comfy as any other bike I've ridden.
bendembroski is offline   Reply With Quote
Old 09-14-11, 10:05 AM   #9
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)
From my experience lifting the Brompton in and out the trunk is worse than riding it.

I started with the firm suspension but did not like and and switched to the standard. Also added a sprung Brooks.
kamtsa is offline   Reply With Quote
Old 09-14-11, 10:05 AM   #10
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Bikes: 7
Posts: 22,221
Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 1146 Post(s)
For the front end,
Pan Tour, a California company, make a hub with suspension in it, 12mm of travel,
to take some road buzz out of the front end, they're made in the narrow width of folding bikes.
fietsbob is offline   Reply With Quote
Old 09-14-11, 10:10 AM   #11
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Bikes: 7
Posts: 22,221
Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 1146 Post(s)
Also A good sized load in the front bag , mounted on the quick release frame block ,
the mass softens a lot of harshness and light steering feel.
fietsbob is offline   Reply With Quote
Old 09-14-11, 10:41 AM   #12
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 fietsbob View Post
For the front end,
Pan Tour, a California company, make a hub with suspension in it, 12mm of travel,
to take some road buzz out of the front end, they're made in the narrow width of folding bikes.
Very instesting. The FAQ says that they adds only 50g to the wheel weight. Anybody sells pantour wheels for Brompton? Does it need anti rotation on the axle to keep the suspension oriented properly?
kamtsa is offline   Reply With Quote
Old 09-14-11, 11:12 AM   #13
chagzuki
Senior Member
 
Join Date: Jul 2008
Bikes: Brompton, Dahon Vitesse D5
Posts: 1,871
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Since Dahon stopped fitting Pantour hubs on their bikes I've seen very little mention of the hub and the company is unresponsive. I think the standard Brompton rim has too little brake contact area to accomodate the vertical travel of the hub. . . it might just about work. Also I think the Pantour hub has a 9mm axle which would mean shaving 1mm off the fork dropout.
chagzuki is offline   Reply With Quote
Old 09-14-11, 11:32 AM   #14
bendembroski
My legs hurt
 
Join Date: Apr 2008
Location: Farther behind you than I'd like to be
Bikes: Vaya, Brompton, '73 Schwinn Super Sport, Cresswell Fold-it, '81 Trek 610
Posts: 683
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I seem to recall people not being happy with Pantour hubs for some reason... Too lazy to look it up.
bendembroski is offline   Reply With Quote
Old 09-14-11, 12:32 PM   #15
ubringliten
Senior Member
Thread Starter
 
ubringliten's Avatar
 
Join Date: Sep 2010
Location: Oakland, CA
Bikes: 2010 Wabi Lightning, 2014 Brompton S2L-X
Posts: 213
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thank you.

I like the sprung saddle idea. Easy to remedy.

When is the H-bar coming out?
ubringliten is offline   Reply With Quote
Old 09-14-11, 12:34 PM   #16
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Bikes: 7
Posts: 22,221
Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 1146 Post(s)
the front axle is not round, that keeps it from rotating,

and it seems to me a more horizontal motion still reduces the buzz,

it's adjustable, as described, is still keeping the brake shoes, over the rim.

H bar setup, was shown at the recent German Trade show,
so they are tooled up to make them,
so perhaps if you order one now the option will be fitted,
when the order is filled.

I think the .5mm per side .. is not much shaving ..

Last edited by fietsbob; 09-14-11 at 12:39 PM.
fietsbob is offline   Reply With Quote
Old 09-14-11, 01:43 PM   #17
bhkyte
Senior Member
 
bhkyte's Avatar
 
Join Date: Sep 2008
Location: York UK
Bikes: 2X dualdrive Mezzo folder,plus others
Posts: 2,870
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 40 Post(s)
Have you had a diagonisis for your back? Advise from a physiotherapist should be better guidance than vauge suggestions from people who do not know your condition. Ie is it upper or lower back, do you prefer flex or extention, is it a disc type problem, muscular?
bhkyte is offline   Reply With Quote
Old 09-14-11, 02:35 PM   #18
alhedges
Senior Member
 
alhedges's Avatar
 
Join Date: Mar 2008
Location: Naptown
Bikes: NWT 24sp DD; Brompton M6R
Posts: 1,133
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
+1 for the sprung saddle; I recommend the B-67.
alhedges is offline   Reply With Quote
Old 09-14-11, 03:35 PM   #19
mulleady
The Metropolis, UK
 
Join Date: Aug 2007
Bikes:
Posts: 2,353
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I have a Brompton front wheel with a pantour hub for sale. PM me if interested. I simply opted for a Son hub and better lighting system. The Pantour does work but you need to know your bike mechanics well or your LBS does.
mulleady is offline   Reply With Quote
Old 09-14-11, 09:05 PM   #20
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 bhkyte View Post
Have you had a diagonisis for your back? Advise from a physiotherapist should be better guidance than vauge suggestions from people who do not know your condition. Ie is it upper or lower back, do you prefer flex or extention, is it a disc type problem, muscular?
This is probably the best advice posted today on Bike Forums.
kamtsa is offline   Reply With Quote
Old 09-14-11, 09:08 PM   #21
jur
Senior Member
 
Join Date: May 2005
Bikes:
Posts: 6,966
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 91 Post(s)
Quote:
Originally Posted by kamtsa View Post
This is probably the best advice posted today on Bike Forums.
Yeah, once we know what your problem is we'll be able to recommend the exact bike for your condition.
jur is offline   Reply With Quote
Old 09-14-11, 11:33 PM   #22
ubringliten
Senior Member
Thread Starter
 
ubringliten's Avatar
 
Join Date: Sep 2010
Location: Oakland, CA
Bikes: 2010 Wabi Lightning, 2014 Brompton S2L-X
Posts: 213
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by bhkyte View Post
Have you had a diagonisis for your back? Advise from a physiotherapist should be better guidance than vauge suggestions from people who do not know your condition. Ie is it upper or lower back, do you prefer flex or extention, is it a disc type problem, muscular?
I went to the doctor, albeit only one and he's not a specialist (but he's an avid rider/commuter), and he said I didn't have a problem with strength so he recommended acupuncture or physical therapy. I also got some stretching exercise that minimizes the pain. I am thinking of going to an acupuncturist this late fall/winter because I know the therapy is going to include not riding a bike. I also noticed that my lower back pain is not that bad after riding upright rental bikes and even I continue riding an upright position bike my pain might eventually go away. Either its the upright position or the freewheel that is easing on my pelvic muscles. In any case, I still want to ride bikes despite the pain which means I still want to get that Brompton!

Thanks all for your comments.

Last edited by ubringliten; 09-14-11 at 11:40 PM.
ubringliten is offline   Reply With Quote
Old 09-14-11, 11:49 PM   #23
Sixty Fiver
Bicycle Repair Man !!!
 
Sixty Fiver's Avatar
 
Join Date: Sep 2007
Location: YEG
Bikes: See my sig...
Posts: 27,264
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 10 Post(s)
For some sitting in a more upright position alleviates pain while for others like myself, a more aggressive position is the cure for what ails us.

Riding a Brompton is an exercise in pain for me and my wife does not like them either but loves her vintage Raleigh Twenty.

I know the folks at Clever Cycles and they do know their stuff... if the person helping you had a nice German accent and a pleasant demeanor you were dealing with the owner (Martina).

Just ask them how the bike was set up and which suspension block was used on the demo bike as I am sure they could swap it for the softer one and give advice on how to soften the ride.

They also have a nice stock of Brooks saddles there.
Sixty Fiver is offline   Reply With Quote
Old 09-15-11, 09:29 AM   #24
crackerdog
Senior Member
 
Join Date: Mar 2008
Location: Port Townsend, WA
Bikes: xtracycle, electric recumbent, downtube folder and more
Posts: 982
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I'd see a doctor who knows something about backs. If he suggested acupuncture, he is suggesting your problem is in your head since it is a placebo. I had a bad back for many years but found that hard work keeps it healthy. Resting makes it bad. Every couple of months I have to do heavy lifting and digging to keep it healthy. Strange but true.
crackerdog is offline   Reply With Quote
Old 09-15-11, 01:10 PM   #25
bhkyte
Senior Member
 
bhkyte's Avatar
 
Join Date: Sep 2008
Location: York UK
Bikes: 2X dualdrive Mezzo folder,plus others
Posts: 2,870
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 40 Post(s)
Yes, usually an active back is healthier. Riding a bike should no be contra indicated in treatment most of the time.

There are lots of ways of sitting in an upright position or a more aggressive racing set up. There are right ways ,wrong ways and different ways. Bike set up is not exclusively the answer. Two people with identical dimensional will adapt different postures on identical bikes ,therefore loading muscles/joints/nerves in different ways.

Nearly always unloaded lumber extension helps pain on flexion,( ie a pelvic press ups). If you prefer an upright cycling posture, you probably have a preference for extension rather than flexion.

Google the "MacKenzie directional preference" approach for some exercises, but get some advise from a professional. Its cheaper in the long term.

Last edited by bhkyte; 09-15-11 at 01:19 PM.
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 11:56 PM.