Search found 487 matches

by Keezx
9 Mar 2024, 11:12am
Forum: Bikes & Bits – Technical section
Topic: Campag freehub failure
Replies: 17
Views: 1123

Re: Campag freehub failure

A 1994 Campagnolo chainset was never polished , neither front or backside.exept maybe by someone who likes it...out of the factory everything was anodised...
by Keezx
27 Feb 2024, 11:22pm
Forum: Electrically assisted pedal cycles
Topic: Should electric bikes go faster
Replies: 96
Views: 5857

Re: Should electric bikes go faster

simonineaston wrote: 27 Feb 2024, 1:36pm …on the other hand, there’s the two kids on a tatty-looking no-pedal jobbie, with flattish tyres, pelting past me towards the mini-roundabout at the main road, which they just about managed to negotiate… their speed? It’s hard to judge, I know, but I’d peg it at somewhere between 20 and 30 mph. Exciting stuff!
Are you talking about fatbikes?
As we speak a real plague around Amsterdam....
by Keezx
27 Feb 2024, 10:24am
Forum: Electrically assisted pedal cycles
Topic: Should electric bikes go faster
Replies: 96
Views: 5857

Re: Should electric bikes go faster

toontra wrote: 13 Feb 2024, 12:37pm Talking of cycle lanes, if electric bikes were going at 20mph that would bring them into more conflict with un-powered cyclists. At 16mph we muddle along together ATM - at 20 there would be more dangerous overtakes.

I'm in central London where the mix of powered/unpowered bikes is now approaching 50/50%. Personally as a "regular" rider I don't mind electric bikes. I use them to pace my riding, sometimes drafting, sometimes overtaking, but generally co-existing. 20mph would change all that - I'd have to be going flat out all the time!
Exactly this.
16 mph is a fine average for slow traffic on bike paths, the old, narrow infrastructure is not suitable for much faster.
Only IF the existing infrastructure for slow traffic would be say 4 feet wider , that creates space for faster vehicles.
by Keezx
20 Feb 2024, 11:38am
Forum: Bikes & Bits – Technical section
Topic: Enviolo, made a mistake?
Replies: 13
Views: 1079

Re: Enviolo, made a mistake?

Brucey wrote: 19 Feb 2024, 11:14am I wonder if the enviolo hub (like many other IGHs) is susceptible to use with a welded double sprocket? If so, then this could be used to give a wider range and improved overall efficiency too.
The splined Eviolo spocket driver cannot take 2 sprockets normally (just a 2 mm filling washer) but a'm prettey sure it's possible to fit 2 sprockets with some "home engineering"
by Keezx
1 Feb 2024, 2:11pm
Forum: Bikes & Bits – Technical section
Topic: Replacing a CR18 rim with an Exal EX17
Replies: 13
Views: 727

Re: Replacing a CR18 rim with an Exal EX17

ERD of KinLin ADHN is 606, not expensive also...
by Keezx
30 Jan 2024, 11:26pm
Forum: Bikes & Bits – Technical section
Topic: Dropout hangers.
Replies: 25
Views: 1180

Re: Dropout hangers.

drossall wrote: 30 Jan 2024, 1:27pm
Keezx wrote: 30 Jan 2024, 10:03amTrue, so the tabs are useful for older suspension forks with quick release AND disk brake...and I do not touch them.
I'm not sure what would happen with disc brakes if a Q/R came loose, even with lawyers' lips, and I'm not going to test :shock: Certainly the whole business pre-dates any widespread use of discs, so the arguments at the time didn't involve them.
I remember some discussions on Usenet in the late ninenties with Jobst Brandt about disk brakes and quick release hubs, so i assumed the arguments were actually involved in the history of laywer's rtabs.
I do own an old MTB with a diks brake front wheel and quick release and I'm glad with them...pretty sure they will prevent the wheel leaving the bike unwanted.....
by Keezx
30 Jan 2024, 11:09am
Forum: Bikes & Bits – Technical section
Topic: Conversion Rim to Disc Frames
Replies: 10
Views: 691

Re: Conversion Rim to Disc Frames

IMO there is nothing wrong with a hybrid configuration, a disk front and rear as it was .
Buy a new fork and brake and there you are with minimal expenses.
by Keezx
30 Jan 2024, 10:03am
Forum: Bikes & Bits – Technical section
Topic: Dropout hangers.
Replies: 25
Views: 1180

Re: Dropout hangers.

drossall wrote: 29 Jan 2024, 9:39pm I've ground them off some steel road forks. Quick release is meant to be that. Lawyers' lips spoil it. QR was for road bikes originally, and only later used on MTBs.
True, so the tabs are useful for older suspension forks with quick release AND disk brake...and I do not touch them.
by Keezx
30 Jan 2024, 9:57am
Forum: Bikes & Bits – Technical section
Topic: Dropout hangers.
Replies: 25
Views: 1180

Re: Dropout hangers.

Mike Sales wrote: 29 Jan 2024, 1:52pm CUT
I have found it impossible to convince my brother in law that the QR is not a sort of folding wing nut. He also has a difficulty understanding brake quick release levers!
Is your brother in law an average American?
by Keezx
29 Jan 2024, 3:05pm
Forum: Bikes & Bits – Technical section
Topic: Dropout hangers.
Replies: 25
Views: 1180

Re: Dropout hangers.

rareposter wrote: 29 Jan 2024, 1:47pm
And no, I've never filed the tabs off a set of forks - the idea of taking a file to a significant structural part of a bike for literally no benefit whatsoever (other than "ooh look, I've saved myself half a second taking a wheel off, I'll now spend 10 minutes fixing the puncture...") is one that no-one with any sense would ever consider.
I consider myself as blessed with a lot of common sense and I grind off the tabs from every fork I own.
No moron American should force me to something I do not like.

BTW, I'm 71 now and NEVER in my 55 year cycling career a front wheel came out due to unsufficient holding of the quick release.
by Keezx
27 Jan 2024, 5:41pm
Forum: Bikes & Bits – Technical section
Topic: How straight does a frame been to be?
Replies: 59
Views: 3592

Re: How straight does a frame been to be?

Last week I was involved in an accident with a car which came from the left and hit the rear part of my winterbike (heavy steel frame) pretty hard.
Fell in the grass, and no noticable injuries....lucky me.
At first look, only the tire was punctured and the bars not straight, the rest looked fine.
A friendly witness brought me home, where it turned out that the left seatstay was dented heavily inside , a lot more than the design of the manufacturer (no cracks though), so that the rear wheel lent over to the right appr. 1 degree.. alignment in length seems okay.
Decided to ride it to test if it still was a usable bike, and i did not notice any discrepancy in riding perception., compared with before.
by Keezx
5 Jan 2024, 5:18pm
Forum: Bikes & Bits – Technical section
Topic: Braking upgrades on Brompton
Replies: 29
Views: 3811

Re: Braking upgrades on Brompton

Had a 16"Dahon folding bike with Weinmann or so sidepull rim brakes, which never impressed me.
They were good enough for flat terrein and low speed, like most folders are used, but sensitive for cable issues while folding and insufficientr in the wet.
I still regret I coudn'd find a front hub for the narrow fork. either for di8sk brake or Shimano roller brake (likely good enough for small wheels)
by Keezx
4 Jan 2024, 1:09pm
Forum: Bikes & Bits – Technical section
Topic: Best material for a shim for seat post?
Replies: 50
Views: 2523

Re: Best material for a shim for seat post?

My guess is that on a microscopic level , aluminium oxide has more grip on a soft surface (Carbon seat post) than titanium oxide.
As in : braking with aluminium rims works better than steel&chrome rims.
by Keezx
3 Jan 2024, 12:00pm
Forum: Bikes & Bits – Technical section
Topic: Best material for a shim for seat post?
Replies: 50
Views: 2523

Re: Best material for a shim for seat post?

Brucey wrote: 31 Dec 2023, 12:23pm
Keezx wrote: 31 Dec 2023, 9:14am .......Diameter of the titanium sleeve was spot-on , but the inner surface was too smooth........
how did you measure it? I have never seen a moving seatpost that did not also wobble, and Ti would be the last material I'd expect problems with.
That sleeve was slotted over the entire length (80 mm) so measurement is not relevant.
The post did slide in with some effort though, so to my assessment it had the right dimensions.
by Keezx
31 Dec 2023, 9:14am
Forum: Bikes & Bits – Technical section
Topic: Best material for a shim for seat post?
Replies: 50
Views: 2523

Re: Best material for a shim for seat post?

It was definately the material responsable for the slipping post.
Diameter of the titanium sleeve was spot-on , but the inner surface was too smooth.
My first impression was that the sleeve was welded in the seat tube, but it turned out ( after 2 or 3 years), that is was only pressed in and I could buy a similar aluminium alloy sleev to replace it.