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Search: Posts Made By: Winfried
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Forum: Folding Bikes
03-08-21, 08:17 AM
Replies: 1
Views: 40
Posted By Winfried

Never seen any in the wild. Maybe they've been...

Never seen any in the wild. Maybe they've been end-of-lifed due to low sales?
Forum: Folding Bikes
03-06-21, 08:55 PM
Replies: 12
Views: 309
Posted By Winfried

For extra protection, I tried liners on two...

For extra protection, I tried liners on two Marathon tires, and both tires ended with hernias. I guess the liners rub against the inside of the tire.

Having the front wheel suddenly go flat while...
Forum: Folding Bikes
03-06-21, 10:09 AM
Replies: 83
Views: 18,705
Posted By Winfried

Yes, I'll play it safe, and find some ~3mm tall,...

Yes, I'll play it safe, and find some ~3mm tall, OD 15mm wide, ID 3/8" nut so it fits both the Nexus axle and the Brompton chain tensioner.
...
Forum: Folding Bikes
03-05-21, 12:12 PM
Replies: 83
Views: 18,705
Posted By Winfried

One among others: ...

One among others:
https://www.aliexpress.com/item/4000922614652.html

I emailed Aceoffix and Twtopse to suggest they offer a 135mm steel triangle as a more affordable alternative to their titanium...
Forum: Folding Bikes
03-05-21, 06:14 AM
Replies: 83
Views: 18,705
Posted By Winfried

Also, considering the tiny difference in...

Also, considering the tiny difference in diameters between the SA axle (10mm) and the Shimano (3/8" = 9.525mm), I wonder if using the SA nut + lock washers is really an issue.
...
Forum: Folding Bikes
03-05-21, 05:38 AM
Replies: 83
Views: 18,705
Posted By Winfried

He bought it second hand from someone who had it...

He bought it second hand from someone who had it done. At some point, he no longer liked the way the chain tensioner had been modified, so went ahead and 3D-printed two spacers.

I guess it was...
Forum: Folding Bikes
03-04-21, 06:23 PM
Replies: 83
Views: 18,705
Posted By Winfried

No, both jockeys must be modified since they both...

No, both jockeys must be modified since they both move (when using the derailleur, and now to match the new chain line with the Nexus).

Looks like a 3D printer would be easier than finding someone...
Forum: Folding Bikes
03-04-21, 05:50 PM
Replies: 83
Views: 18,705
Posted By Winfried

Or do the jockey wheels on the 1/3 speed chain...

Or do the jockey wheels on the 1/3 speed chain tensioner have a smaller diameter than those on the 2/6 speed?
...
Forum: Folding Bikes
03-04-21, 05:20 PM
Replies: 83
Views: 18,705
Posted By Winfried

What does the sleeve rest on once the jockey...

What does the sleeve rest on once the jockey wheel has been moved outward?

I happened on the following page (https://aussieonabrompton.com/2013/06/21/ralph-refreshed/), although the idea did occur...
Forum: Folding Bikes
03-04-21, 01:28 PM
Replies: 83
Views: 18,705
Posted By Winfried

Thanks for the feeback. What I don't...

Thanks for the feeback.

What I don't understand, is how the original chain tensioner could work with the sleeves not resting on anything unless the idlers haven't been pushed out too much (ie.part...
Forum: Folding Bikes
03-04-21, 12:01 PM
Replies: 83
Views: 18,705
Posted By Winfried

Thanks, I'll experiment and see if the sleeves...

Thanks, I'll experiment and see if the sleeves don't bend.
Forum: Folding Bikes
03-04-21, 11:20 AM
Replies: 83
Views: 18,705
Posted By Winfried

Looks like that's exactly what Brommieplus did to...

Looks like that's exactly what Brommieplus did to fit the Sturmey Archer X-RF8 gear hub:...
Forum: Folding Bikes
03-04-21, 11:14 AM
Replies: 83
Views: 18,705
Posted By Winfried

Won't the axle break because of the leverage,...

Won't the axle break because of the leverage, since it's no longer resting within the body?...
Forum: Folding Bikes
03-04-21, 08:50 AM
Replies: 83
Views: 18,705
Posted By Winfried

Yes, some parts were likely added to move the...

Yes, some parts were likely added to move the idlers, and I wonder what they are so I could do it myself.
Forum: Folding Bikes
03-03-21, 12:54 PM
Replies: 83
Views: 18,705
Posted By Winfried

No, it's the original that was "simply" cold-set...

No, it's the original that was "simply" cold-set (https://junik-hpv.de/arbeitsbereiche/brompton/).

But then, the tensioner has to tweaked as shown so that the idlers are moved inward to match the...
03-03-21, 11:47 AM
Replies: 36
Views: 857
Posted By Winfried

https://bicycles.stackexchange.com/questions/51203...

https://bicycles.stackexchange.com/questions/51203/is-white-spirit-a-too-aggressive-degreaser
Forum: Folding Bikes
03-03-21, 11:40 AM
Replies: 83
Views: 18,705
Posted By Winfried

It's a picture I found on the Net. It seems...

It's a picture I found on the Net.

It seems to be using the 1/3 speed Brompton tensioner, with some serious spacers added to remedy the chain line: The idlers are sitting between the wheel and the...
03-02-21, 11:53 PM
Replies: 11
Views: 242
Posted By Winfried

Even after shaving 12mm from the left side? ...

Even after shaving 12mm from the left side?

https://cimg8.ibsrv.net/gimg/bikeforums.net-vbulletin/473x500/img_20210301_115400_edited_634481c001bd3e167aa66306b134e55a3064b19a.jpg...
03-02-21, 01:49 PM
Replies: 23
Views: 1,894
Posted By Winfried

Shimano Hub Gear Oil Port...

Shimano Hub Gear Oil Port (http://www.astounding.org.uk/ian/hubgear/oilport.html)

You could use this drain plug from Rohloff...
Forum: Folding Bikes
03-02-21, 01:29 PM
Replies: 83
Views: 18,705
Posted By Winfried

Reviving an old thread with a question about...

Reviving an old thread with a question about Brompton's 1/3 speed chain tensioner: How do you think the idlers (jockey wheels) were pushed inward to have a correct chain line and keep the idler...
03-02-21, 01:18 PM
Replies: 11
Views: 242
Posted By Winfried

It's how Shimano calls it: "Left Hand Dust Cap...

It's how Shimano calls it: "Left Hand Dust Cap Unit (Y-34R 98100).

Regardless, it then opens a new issue: Using that trick, the rim would now be way too far to the left :-/
03-01-21, 12:54 PM
Replies: 11
Views: 242
Posted By Winfried

Got a reply from gear hubs expert Aaron Goss...

Got a reply from gear hubs expert Aaron Goss (http://www.rideyourbike.com/): "It is fine. We have done it. Yes grease more often."
03-01-21, 11:47 AM
Replies: 11
Views: 242
Posted By Winfried

Another thing that must be addressed: After...

Another thing that must be addressed: After removing those parts on the left side, the hub will be moved to the left, so when cold-setting the frame, it should be pulled asymetrically so the right...
03-01-21, 11:44 AM
Replies: 11
Views: 242
Posted By Winfried

However, the BWR from Sturmey-Archer that powers...

However, the BWR from Sturmey-Archer that powers the six-speed Brompton has no dust cap, just a lock nut + cone:
...
03-01-21, 05:51 AM
Replies: 11
Views: 242
Posted By Winfried

[SOLVED] [Nexus 8] Riding without left hand-side dust cap?

Hello,

To stick a Shimano Nexus 8 gear hub into a Brompton (OLD 112mm), I'm thinking of removing the left hand-side "dust cap unit"...
02-28-21, 11:12 AM
Replies: 8
Views: 2,866
Posted By Winfried

It wasn't obvious, but I'll keep that in mind.

It wasn't obvious, but I'll keep that in mind.
02-27-21, 05:36 AM
Replies: 8
Views: 2,866
Posted By Winfried

It's gear hubs, not dynohubs. I might use...

It's gear hubs, not dynohubs.

I might use either an SG-8R31 or an SG-C6011.

Is there no part that could be used as dust cap, even if it's not originally meant for that purpose?
Forum: Folding Bikes
02-26-21, 03:27 PM
Replies: 12
Views: 419
Posted By Winfried

As a reference, using the B clamp and this front...

As a reference, using the B clamp and this front derailleur, both from Litepro, the fork rests (ie. meant to hover above the smallest chainring) at about 35mm from the inside of the clamp:...
02-26-21, 06:23 AM
Replies: 8
Views: 2,866
Posted By Winfried

I'll add a question to this thread, since it's...

I'll add a question to this thread, since it's close.

To reduce the width of a Nexus 8 from 132mm to 120mm to fit in a slimmer fork, you can remove the left-side dust cover.

I'm concered about...
Forum: Folding Bikes
02-22-21, 09:32 AM
Replies: 2
Views: 276
Posted By Winfried

Thanks for the infos. I vaguely remember having...

Thanks for the infos. I vaguely remember having struggled myself when trying to use standard gear.
Forum: Folding Bikes
02-22-21, 09:30 AM
Replies: 4
Views: 369
Posted By Winfried

BTW, Tern has two different racks that might work...

BTW, Tern has two different racks that might work on the Link

Rapid Transit (https://www.ternbicycles.com/ph/accessories/471/rapid-transit-rack-l)

Trolley Rack...
Forum: Folding Bikes
02-22-21, 07:14 AM
Replies: 2
Views: 276
Posted By Winfried

[Brompton] Making sense of gear/brake cables and housing

Hello,

On a Brompton, there are so many options when remplacing a cable and housing, depending on the year of production, brake (https://www.sjscycles.co.uk/cables-brake/?brand=brompton)/gear...
Forum: Folding Bikes
02-20-21, 12:51 PM
Replies: 4
Views: 559
Posted By Winfried

At 6+ feet, did you get the extended seat pillar...

At 6+ feet, did you get the extended seat pillar (https://www.sjscycles.co.uk/seat-posts/brompton-extended-seat-pillar/), the telescopic seatpost extender...
02-20-21, 12:25 PM
Replies: 17
Views: 295
Posted By Winfried

How does the differential work? Is the magic all...

How does the differential work? Is the magic all into that part?

Is a rear drive trike (delta) harder to move than a front drive (tadpole)?
...
02-20-21, 08:18 AM
Replies: 17
Views: 295
Posted By Winfried

Rather than steering, I'm concerned about the...

Rather than steering, I'm concerned about the effort required to spin the two front wheels (instead of just one).

Or maybe with "turning", you meant what I just wrote :-p
02-20-21, 07:56 AM
Replies: 17
Views: 295
Posted By Winfried

[trike] Two wheel-drive = more effort?

Hello,

Denmark's BellaBike trikes (http://bellabike.dk/) are unusual with their two front wheel-drive, and the rear wheel that steers.

Empty, the bike weighs about 40 kg/80 lbs. It comes with a...
02-19-21, 11:11 AM
Replies: 8
Views: 294
Posted By Winfried

I'll check it out.

I'll check it out.
02-19-21, 09:24 AM
Replies: 8
Views: 294
Posted By Winfried

Thanks. I'll tell him to check if the...

Thanks. I'll tell him to check if the controller+display can handle 48V.

Otherwise, maybe he could stick to what he has (36V) and just upgrade the battery to 20-30 amps ?
02-19-21, 08:48 AM
Replies: 33
Views: 1,615
Posted By Winfried

A French brand, but I'm sure there are others. ...

A French brand, but I'm sure there are others.

https://cimg8.ibsrv.net/gimg/bikeforums.net-vbulletin/750x370/moustache_tandem_vae_1f2d264bea445949a8b51768b3a3df03ffa20e25.png...
02-19-21, 07:39 AM
Replies: 8
Views: 294
Posted By Winfried

Question Trike with Bafang BBS01 too slow

Hello,

Do you think a BBS01 (ie. 250W) powered by a 36V 17Ah battery is enough to ride a ~200kg/440lbs (rider + bike + load) trike with a Nexus 7 gear hub, 32/20T cogs, and 20" (406) wheels?
...
Forum: Folding Bikes
02-18-21, 08:46 AM
Replies: 10
Views: 1,862
Posted By Winfried

I had a seasoned professional do it. AFAICT,...

I had a seasoned professional do it.

AFAICT, he bent both the stays and the drop outs.
Forum: Folding Bikes
02-18-21, 07:52 AM
Replies: 1,502
Views: 405,888
Posted By Winfried

Besides the tube diameter, the adapter might...

Besides the tube diameter, the adapter might prevent folding, as the front+rear tubes are very close to each other.

If it does work it'd be a nice add-on for Strida riders....
Forum: Folding Bikes
02-18-21, 07:45 AM
Replies: 10
Views: 1,862
Posted By Winfried

Using the 8L+8R blue+green anti-rotation washers...

Using the 8L+8R blue+green anti-rotation washers (https://www.sheldonbrown.com/nexus-mech.html#washers), I notice the pulley arm of the Alfine 11 cassette joint is way too low when fit inside a...
Forum: Folding Bikes
02-18-21, 04:36 AM
Replies: 1,502
Views: 405,888
Posted By Winfried

https://www.valeriasbikeaccessories.com/en/accesso...

https://www.valeriasbikeaccessories.com/en/accessories-/402-front-carrier-block-universal-adapter-set-for-scooters-and-bicycles.html

Incidently, does it fit a Strida?
...
Forum: Folding Bikes
02-17-21, 01:57 PM
Replies: 46
Views: 3,372
Posted By Winfried

They look as puncture-resistant as Kojaks. ...

They look as puncture-resistant as Kojaks.

Is Primo a Japanese brand? I found no corporate site.

https://www.radicaldesign.com/tire-primo-comet-37-349-with-inner-tube-16
Forum: Folding Bikes
02-17-21, 12:43 PM
Replies: 46
Views: 3,372
Posted By Winfried

So, a pair of Schwalbe One...

So, a pair of Schwalbe One (https://andythousand.com/brompton-schwalbe-one-long-term-review/) and a pint of Stan's Tire Sealant (https://www.bike24.com/p236072.html) is a good, worry-free alternative...
02-17-21, 06:24 AM
Replies: 25
Views: 595
Posted By Winfried

All else being equal, rims on smaller wheels...

All else being equal, rims on smaller wheels obviously wear faster. Besides, those used by Brompton are on the cheap side.

I've already laced/weaved rims myself. Worth the effort, at least for...
02-16-21, 06:17 PM
Replies: 25
Views: 595
Posted By Winfried

Anything besides asphalt, nothing the Brompton...

Anything besides asphalt, nothing the Brompton was meant for, so I can't complain.

I doesn't take long for rims to look like this:...
Forum: Folding Bikes
02-16-21, 04:42 AM
Replies: 14
Views: 1,062
Posted By Winfried

There's a business opportunity right there.

There's a business opportunity right there.
Forum: Folding Bikes
02-16-21, 04:38 AM
Replies: 4
Views: 369
Posted By Winfried

What's the diff, you ask? ...

What's the diff, you ask?

https://cimg4.ibsrv.net/gimg/bikeforums.net-vbulletin/776x1538/tern_carryon_popcover_7d202d9a437a913ff6cb9b409753f2a0f19db4db.png

I would get the CarryOn, as I used...
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