Bike Forums

Bike Forums (https://www.bikeforums.net/forum.php)
-   Folding Bikes (https://www.bikeforums.net/folding-bikes/)
-   -   New Brompton Arrived and I rode it! (https://www.bikeforums.net/folding-bikes/1142852-new-brompton-arrived-i-rode.html)

dgodave 05-01-18 06:59 PM

New Brompton Arrived and I rode it!
 
Delivered last night.
Ridden this afternoon!
To be toured on starting the end of May.

https://farm1.staticflickr.com/946/2...f39c21fb_z.jpg

https://farm1.staticflickr.com/970/4...6274d5c7_z.jpg

https://farm1.staticflickr.com/974/2...7066d543_z.jpg

GTA 05-01-18 08:23 PM

nice bike, congratulations~~

reppans 05-01-18 08:47 PM

Congrats! You intend on self-supported (camping) touring? Just curious since you didn't get a rack.

dgodave 05-01-18 09:07 PM


Originally Posted by reppans (Post 20317844)
Congrats! You intend on self-supported (camping) touring? Just curious since you didn't get a rack.

No, this will be credit card touring this time... tho I still want lower gears. The 6 speed reduced isnt low enough.

tudorowen1 05-02-18 01:04 AM

Fit a 39 tooth chainwheel..26 inch to 83 inch gear range...

glowrocks 05-02-18 01:06 AM

Love the roads you ride on!

dgodave 05-02-18 07:21 AM


Originally Posted by tudorowen1 (Post 20318054)
Fit a 39 tooth chainwheel..26 inch to 83 inch gear range...

Thats more like it.

Tho I like the plastic pants guard on the stock chainring and dont want to give it up.

Wonder if I can swap out the 2 rear cogs for something slightly bigger?

FolderBeholder 05-02-18 10:32 AM


Originally Posted by dgodave (Post 20317870)
No, this will be credit card touring this time... tho I still want lower gears. The 6 speed reduced isnt low enough.

Color me....jealous!

(The -12% gearing isn't low enough?)

fietsbob 05-02-18 10:57 AM


Wonder if I can swap out the 2 rear cogs for something slightly bigger?
Count teeth, what is on there?

dgodave 05-02-18 11:47 AM


Originally Posted by FolderBeholder (Post 20318643)
Color me....jealous!

(The -12% gearing isn't low enough?)

Nooo. I climb some really steep hills here, plus my knees are getting old.

dgodave 05-02-18 12:11 PM


Originally Posted by fietsbob (Post 20318693)
count teeth, what is on there?

13t & 16t

FolderBeholder 05-02-18 03:01 PM


Originally Posted by dgodave (Post 20318891)
13t & 16t

Same amount of teeth my 3rd cousin has !

And my other 3rd cousin has 16....

LOL....keep us posted.

Joost 05-02-18 04:44 PM

Nice bike with a beautiful color! Enjoy!

badmother 05-03-18 01:03 AM


Originally Posted by FolderBeholder (Post 20319242)
Same amount of teeth my 3rd cousin has !

And my other 3rd cousin has 16....

LOL....keep us posted.

And they play the banjo? :innocent:

Nice colour. Stylish.

berlinonaut 05-03-18 05:34 AM


Originally Posted by dgodave (Post 20318255)
Wonder if I can swap out the 2 rear cogs for something slightly bigger?

You can go up to 17t (instead of the stock 16t) w/o filing on the frame. You can go up to 18t with light filing on the rear frame/chainstay. For anything bigger on the BWR hub it needs courage. :D

reppans 05-03-18 06:24 AM

Think I want to try a -22% with the 39T chainring for the 26-78" gi range... Can anyone advise a good 39T ring to buy, and do I need a specific bolt pattern for it?

1nterceptor 05-03-18 06:48 AM

Been using a Shimano Dura Ace 39T chainting for a few years.
Shimano Ultegra chain; both 10 speed. Stock rear sprockets/cogs:

dgodave 05-03-18 07:39 AM

Thanks for the compliments everybody!

I should have no problem finding a 130 BCD 40t chainring. But I really wanted to keep the "pants guard" thing.

dgodave 05-03-18 08:21 AM


Originally Posted by berlinonaut (Post 20320120)
You can go up to 17t (instead of the stock 16t) w/o filing on the frame. You can go up to 18t with light filing on the rear frame/chainstay. For anything bigger on the BWR hub it needs courage. :D

Interesting. I sure wont be filing the frame. Do you happen to know what brand/spec cogs I would need?

L Arnold 05-03-18 08:25 AM

My Velo Pant Guard (Nomadic built, Boulder, CO)
 

Originally Posted by dgodave (Post 20320259)
Thanks for the compliments everybody!

I should have no problem finding a 130 BCD 40t chainring. But I really wanted to keep the "pants guard" thing.

I'll send you a Pants Guard if you need. I'm with you generally on wearing pants not tights. This is actually mesh so it is very comfortable to wear.

Also, if you are interested, I've modified a Dahon to have a 17 to 96 Gear Inch range. Perhaps some angles like that for your Brompton.
Nice looking bike you have.

https://cimg1.ibsrv.net/gimg/bikefor...b201050956.jpg

https://cimg7.ibsrv.net/gimg/bikefor...95c69e6b4f.jpg

dgodave 05-03-18 08:32 AM


Originally Posted by L Arnold (Post 20320362)
I'll send you a Pants Guard if you need. I'm with you generally on wearing pants not tights. This is actually mesh so it is very comfortable to wear.

Also, if you are interested, I've modified a Dahon to have a 17 to 96 Gear Inch range. Perhaps some angles like that for your Brompton.
Nice looking bike you have.

Wow that is very generous of you. But first I'm going to try for a solution that keeps the pants guard on the bike, as I'd rather not add things to my bring-it-riding checklist.

L Arnold 05-03-18 08:48 AM


Originally Posted by dgodave (Post 20320377)
Wow that is very generous of you. But first I'm going to try for a solution that keeps the pants guard on the bike, as I'd rather not add things to my bring-it-riding checklist.

One method,
and definitely lighter than anything attached with bolts (Local crop too) :)

I also have some 46 or 42 Tchain ring protectors (I need to count). They can normally work for smaller chain rings too. I've been pulling these from bikes (below) to build the wide range version I mentioned.
https://cimg4.ibsrv.net/gimg/bikefor...57f77ca29f.jpg

https://cimg1.ibsrv.net/gimg/bikefor...cb0301b110.jpg

reppans 05-03-18 09:38 AM


Originally Posted by 1nterceptor (Post 20320198)
Been using a Shimano Dura Ace 39T chainting for a few years.
Shimano Ultegra chain; both 10 speed. Stock rear sprockets/cogs:
https://www.youtube.com/watch?v=5AT6...6zPoymgKaIoDLA

Thanks interceptor... saw your video before too - very helpful. Can I assume the Dura Ace 39T come in one standard bolt pattern (that matches the Brompton)? Also assume using a thinner chainring (for 10 speed rig) should be no problem with the wider(?) Brompton chain?

1nterceptor 05-03-18 09:59 AM


Originally Posted by reppans (Post 20320513)


Thanks interceptor... saw your video before too - very helpful. Can I assume the Dura Ace 39T come in one standard bolt pattern (that matches the Brompton)? Also assume using a thinner chainring (for 10 speed rig) should be no problem with the wider(?) Brompton chain?

Brompton uses the common 130 BCD. A lot of brands/models will also fit; SRAM, FSA, etc. Not sure how a 10
speed ring will behave w/ a stock B'ton chain. I'd go with a 8 or 9 speed ring if you want to stick w/ the stock chain.
https://farm6.staticflickr.com/5033/...58306855c7.jpg
2013 Brompton DA chainring Ultegra chain by 1nterceptor, on Flickr
To the Op; and others who want to change rings but still have a protector. I've seen mods where owners put a smaller ring(38T, 39T, 40T);
which were designed to be inner rings. At the same time, they install the outer ring(53T, 52T, etc); but they file the teeth off. Presto, guard. :D

fietsbob 05-03-18 10:06 AM

A Surly Stainless steel chainring https://surlybikes.com/parts/drivetr...eel_chainrings

would be my go to .. longer wearing , and flat , so you can flip it over & extend it's use-life ( still go 130 39t )
http://www.jensonusa.com/globalasset...l--130--39.jpg

I have had a Surly 110-38t on my Rohloff bike for many years..
'2.1mm thick' so works with 8 speed / 3/32" chain..

But in addition to the Ultegra-Dura ace 130-39t, you can find a lot of others of that size ,

using the same 7075-T6 aluminum alloy to machine into that part..



..

linberl 05-03-18 11:41 AM


Originally Posted by dgodave (Post 20320259)
Thanks for the compliments everybody!

I should have no problem finding a 130 BCD 40t chainring. But I really wanted to keep the "pants guard" thing.

Thor USA has litepro chainrings with integrated guards.

dgodave 05-03-18 12:07 PM


Originally Posted by linberl (Post 20320733)
Thor USA has litepro chainrings with integrated guards.

53t is the smallest. I'm looking to go down to 40t.

linberl 05-03-18 12:48 PM

You can get down to 42 if that would work for you, well 45 actually unless you can use an oval chainring
: https://www.ebay.com/itm/LITEPRO-MTB...b3SomYSzQigL_Q

berlinonaut 05-03-18 02:15 PM


Originally Posted by dgodave (Post 20320350)
Interesting. I sure wont be filing the frame. Do you happen to know what brand/spec cogs I would need?

On the 6-speed BWR: Shimano compatible ones. You can just buy a cassette and rip the cogs off it if you do not manage to get the desired sizes solo.

qwer 05-07-18 07:15 PM

Schlumpf Mountain Drive - Problem solved.

schlumpf drive - Home - schlumpfdrive - ultraflat Planetary Gear for Bikes


All times are GMT -6. The time now is 08:22 AM.


Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.