Search found 487 matches
- 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...
- 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
Are you talking about fatbikes?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!
As we speak a real plague around Amsterdam....
- 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
Exactly this.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!
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.
- 20 Feb 2024, 11:38am
- Forum: Bikes & Bits – Technical section
- Topic: Enviolo, made a mistake?
- Replies: 13
- Views: 1079
Re: Enviolo, made a mistake?
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"
- 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...
- 30 Jan 2024, 11:26pm
- Forum: Bikes & Bits – Technical section
- Topic: Dropout hangers.
- Replies: 25
- Views: 1180
Re: Dropout hangers.
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.....
- 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.
Buy a new fork and brake and there you are with minimal expenses.
- 30 Jan 2024, 10:03am
- Forum: Bikes & Bits – Technical section
- Topic: Dropout hangers.
- Replies: 25
- Views: 1180
Re: Dropout hangers.
True, so the tabs are useful for older suspension forks with quick release AND disk brake...and I do not touch them.
- 30 Jan 2024, 9:57am
- Forum: Bikes & Bits – Technical section
- Topic: Dropout hangers.
- Replies: 25
- Views: 1180
Re: Dropout hangers.
Is your brother in law an average American?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!
- 29 Jan 2024, 3:05pm
- Forum: Bikes & Bits – Technical section
- Topic: Dropout hangers.
- Replies: 25
- Views: 1180
Re: Dropout hangers.
I consider myself as blessed with a lot of common sense and I grind off the tabs from every fork I own.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.
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.
- 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.
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.
- 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)
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)
- 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.
As in : braking with aluminium rims works better than steel&chrome rims.
- 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?
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.
- 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.
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.