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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.

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Old 03-03-18, 05:53 PM   #76
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Originally Posted by linberl View Post
You cycle SF hills on a 2 speed???? Okay, you are now my HERO! Damn, you must be strong. I've got an 8 speed Bike Friday pakiT and I struggle on anything in the City over around 10 degrees.
Cycling in San Francisco is very challenging to me. I even modified one of my my Brompton from 2 speed to 4 speed (11T/13T/17T/21T) because of the steepest hills in San Francisco.

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Old 03-03-18, 11:30 PM   #77
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Actually 18. There are 10 Bromptons from that picture I post.
Holy cow!!
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Old 03-03-18, 11:31 PM   #78
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You cycle SF hills on a 2 speed???? Okay, you are now my HERO! Damn, you must be strong. I've got an 8 speed Bike Friday pakiT and I struggle on anything in the City over around 10 degrees.
My hero as well!!
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Old 03-04-18, 04:59 AM   #79
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Cycling in San Francisco is very challenging to me. I even modified one of my my Brompton from 2 speed to 4 speed (11T/13T/17T/21T) because of the steepest hills in San Francisco.
That's a mod I'd not heard of before; would you mind giving details of it in a dedicated thread?
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Old 03-04-18, 07:10 AM   #80
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That's a mod I'd not heard of before; would you mind giving details of it in a dedicated thread?
You can get a kit from Brombacher:
(for whatever reason the link to their Facebook-profile where they offer it get's eaten by the forum for me).
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Old 03-04-18, 07:35 AM   #81
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Saw this, it is 3 speed Sprocket Assy for Brompton External 3-Speed Using 11s cogs - Brombacher
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Old 03-04-18, 09:37 AM   #82
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No, this is 3-speed, we are talking about 4 speed via derailleur.
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Old 03-04-18, 12:46 PM   #83
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the BWR hub driver uses a 9 spline cog, Shimano pattern*, the BSR is still using the old AW3 cog..

Mk3 they went to Sachs, there the 3 by 2 used a thinner 2mm cog, 13t , and a 15t that skipped 3 teeth as shift gates..
did not change the 3 spline interface, just made it wider.. to fit 2..

I've been using a 15t on my Brompton BSR from that parts spares, for years..


* perhaps he crammed on a 4th cog on the BWR Driver.. I guess, There is some serious money in SF

Fremont is where the Tesla Car factory is.. ..

people can make things..





...

Last edited by fietsbob; 03-04-18 at 12:53 PM.
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Old 03-04-18, 01:05 PM   #84
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Mk3 they went to Sachs, there the 3 by 2 used a thinner 2mm cog, 13t , and a 15t that skipped 3 teeth as shift gates..
did not change the 3 spline interface, just made it wider.. to fit 2..
They did not make anything wider. I had the same upgrade on a Sachs-3-speed back in the 80ies and is was an official upgrade for retrofit from Sachs at that time. You can do this with any Sachs 3-speed-hub, possibly since the 70ies.
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Old 03-04-18, 01:26 PM   #85
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Any how Sachs was who Brompton went to when no SA 5 speeds were available to them any more.. AFAIK..

the 15t , 12 full teeth, works with my 3/32 wide Whipperman full bushing chain..
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Old 03-05-18, 03:02 PM   #86
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That's a mod I'd not heard of before; would you mind giving details of it in a dedicated thread?
I ordered my 4 speed kit from Korea. You can find the info by searching Brombacher_Brompton 4 speed on google. It is on their Facebook page.




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Old 03-05-18, 04:31 PM   #87
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Hub still under 120 mm wide?
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Old 03-08-18, 09:16 AM   #88
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OP here... Still waiting for the bike to arrive at the shop... Debating whether I should just go ahead and upgrade the steel headset from the get-go. Thinking of having the shop order a Chris King black sotto voce one (would match nicely with the black lacquer/black edition). Anyone done this? Worth the money? Or is it just Chris Bling?!? Thanks.
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Old 03-08-18, 12:20 PM   #89
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I would ride the bike first. The headset can be changed at anytime in the futrue. Of course if the $$$ are burning a hole in your pocket go right ahead. Roger
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Old 03-08-18, 01:10 PM   #90
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That is an upgrade I would probably wouldn't do until the headset that is already installed died. I love King headsets but to me not worth the cost at this point in the game. The wait must be the most difficult part at this point.
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Old 03-08-18, 02:21 PM   #91
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I certainly wouldn't replace the headset on functional grounds, so it's a matter of spending the money for blingy coolness. Which, let's be honest, is a perfectly valid reason!
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Old 03-08-18, 03:07 PM   #92
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After owning a few Bromptons over the years, and talking to a lot of other owners -
headset is not the 1st thing I'd worry about.

-It's nice that Brompton includes a pump with most models(except superlight/titanium).
But just like most portable pumps; it sucks. I carry a Topeak Morph G.
-Depending on you weight, how much you stand, masher or spinner; right/drive side pedal
gives up too fast for some. Some in as little as three months.
MKS ESPRIT SUPERIOR PEDALS by 1nterceptor, on Flickr
-Front carrier block is a very useful option. Can accept many kinds of luggage; big or small.
I'm using a Demano messenger bag since 2013:
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Old 03-09-18, 03:44 AM   #93
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Get the cheap Tange sealed bearing headset which fits, I forget the name. I did years back and it's perfect.
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Old 03-09-18, 09:39 AM   #94
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Get the cheap Tange sealed bearing headset which fits, I forget the name. I did years back and it's perfect.
Thanks. I read about that one too. Velo Orange has a Grand Cru one too in a couple different colors for a fraction of the Chris King price...

Now I need to decide whether I want to throw on my Brooks B-17 narrow (over 500 grams!) or just get a Fabric saddle (closer to 200 grams). I know this isn't a weight weenie build but the Brooks just sounds like it'll be an anchor!
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Old 03-09-18, 10:22 AM   #95
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It's a 1.125" OD, threaded fork, 1" ID, get the measurements from the frame when you remove the stock parts..
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Old 03-09-18, 10:38 AM   #96
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As much as the Brooks look great, I agree they are boat anchors. I finally took mine off because I could never get use to it and I replaced it with a Specialized Avatar Gel. The bike doesn't have that classic look anymore but that's the price I paid. I wouldn't mind trying the Brooks C series saddles.
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Old 03-09-18, 11:07 AM   #97
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Thanks. I read about that one too. Velo Orange has a Grand Cru one too in a couple different colors for a fraction of the Chris King price...

Now I need to decide whether I want to throw on my Brooks B-17 narrow (over 500 grams!) or just get a Fabric saddle (closer to 200 grams). I know this isn't a weight weenie build but the Brooks just sounds like it'll be an anchor!
Saddle choice is one area where I don't give a toss about weight, I gotta be comfortable. The standard width B17 is the only one I can ride, I have a ti rail version on my Rivendell.
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Old 03-09-18, 01:39 PM   #98
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lol ... Just saw the thread.... I have both of them, chpt3 6spd and Black Lacquer 2spd. Bought last year from Thanksgiving sale with 15% off and free shipping.

I live in bay area. When I go to San Francisco, I used to ride my Titanium Ni edition 6 speed but now I just ride my 2 speed Ti Brompton. (12T/17T) The bike is about 8kg so it is easier for me to carry around the bart stations and cycling up hills in San Francisco.

BTW, I like the Brompton grips because of lightweight. However, I replaced them with Ergon Brooks grips because they caused my hand numbness.
.
Here is the picture of my Black Raw Laquer 2 speed. My chpt3 is on the shelf.
Just an FYI-

I posted a picture of a knife I have on a knife forum I belong to, and shortly thereafter received a fairly creepy PM from someone else on that forum that with data encrypted on that iPhone picture...he knew where I (and my knife(s)) lived.

I'm cautious, but not paranoid but that gave me pause. An unintended consequence of today's technology I never thought of.

Just saying...one Brompton is worth more than my ENTIRE knife collection.
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Old 03-09-18, 01:57 PM   #99
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Just an FYI-

I posted a picture of a knife I have on a knife forum I belong to, and shortly thereafter received a fairly creepy PM from someone else on that forum that with data encrypted on that iPhone picture...he knew where I (and my knife(s)) lived.

I'm cautious, but not paranoid but that gave me pause. An unintended consequence of today's technology I never thought of.

Just saying...one Brompton is worth more than my ENTIRE knife collection.
You sure he didn't get it off what appears to be a shipping label on that box in the pic?
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Old 03-09-18, 02:07 PM   #100
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You sure he didn't get it off what appears to be a shipping label on that box in the pic?
I was speaking of my experience with a picture I posted elsewhere...w/o any boxes or labels showing.

Point being, there's a lot of hidden data to be "mined" encrypted in a lot of digital media...photos included.

I was surprised a picture of a pocket knife I own essentially held my residence address in it's inner sanctum and more surprised someone would actually look at that data...

YMMV
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