Search found 485 matches

by AndyA
24 Jan 2021, 1:09am
Forum: Bikes & Bits – Technical section
Topic: Mudguard screws sheared off and embedded in frame
Replies: 53
Views: 1685

Re: Mudguard screws sheared off and embedded in frame

You're definitely fighting an uphill battle here. Are the screws steel or aluminium? My course of action would be centre-punch, start a hole with a centre drill (wanders less than a normal drill), change to left-hand drill. It'd have to be with a 90' attachment on the drill to get square between the...
by AndyA
13 Jan 2021, 10:34pm
Forum: Bikes & Bits – Technical section
Topic: Buying replacement Shimano lever hoods
Replies: 9
Views: 342

Re: Buying replacement Shimano lever hoods

Sometimes SJS can be very quick posting stuff out, sometimes it can be a week. Best range of parts in the UK for my purposes
by AndyA
13 Jan 2021, 10:20pm
Forum: Bikes & Bits – Technical section
Topic: shabby cranks: painted vs anodised vs polished
Replies: 47
Views: 1592

Re: shabby cranks: painted vs anodised vs polished

I am of the view that the only black on a bike should be the tyre tread and maybe the brake blocks. Shiny silver all the way for metal bits. Once stuff gets scabby, as in the pic above. I polish it up. If it gets a bit dull a fee minutes with some Autosol sorts it out. I had a 'silver' Rohloff. It ...
by AndyA
2 Jan 2021, 4:17pm
Forum: Bikes & Bits – Technical section
Topic: Tool tip - tapping a thread
Replies: 23
Views: 818

Re: Tool tip - tapping a thread

I often use those 8 sided nipple wreckers/spoke keys as tap wrenches. Just the job when there isn't enough room for a normal or ratchet tap handle. Particularily useful for chainstay/seatstay bridge mudguard eyelets. 11ga fits my M5 taps well
by AndyA
25 Dec 2020, 11:18pm
Forum: Bikes & Bits – Technical section
Topic: 1x spoke length issue
Replies: 17
Views: 576

Re: 1x spoke length issue

I think the flanges are drilled inaccurately. You can check this by measuring the distance between holes. It might also be that the flanges are eccentric. Errors are amplified by distance from centre if that is the datum. I also hate building e-motor wheels
by AndyA
25 Dec 2020, 10:29pm
Forum: Bikes & Bits – Technical section
Topic: best way to remove bearings from eccentric bottom bracket?
Replies: 32
Views: 1014

Re: best way to remove bearings from eccentric bottom bracket?

Get someone to machine you a set of tube blocks that are 0.2mm less than the OD of the eccentric and clamp them in the vice. Hardwood would work fine but aluminium is best. If the torque proves too much put a bit of emery between the blocks and eccentric for extra friction. I also think a decent str...
by AndyA
11 Dec 2020, 11:29pm
Forum: Bikes & Bits – Technical section
Topic: yet another brake thread; not all about discs
Replies: 111
Views: 3527

Re: yet another disk brake thread

Surely you’ll see the lever travel change and need to pull the lever closer to the bar if the hydraulic adjustment runs out? Unless the bite point is really close to the bar (in normal auto adjusting use) that’ll give you warning in time for new pads. It won’t go from effective braking to nothing i...
by AndyA
20 Nov 2020, 1:33am
Forum: Bikes & Bits – Technical section
Topic: Preparing for Winter - central London commute mudguards & brakes
Replies: 24
Views: 770

Re: Preparing for Winter - central London commute mudguards & brakes

No chance of fitting a proper mudguard under there! Too tight You'd squeeze raceblades under there, or giant defy mudgaurds It's possible your brakes lack power because the pivots in the brake mechanism/cables are full of crud from road spray. Do they return freely? Is there slack at the cable/lever...
by AndyA
17 Nov 2020, 10:56pm
Forum: Bikes & Bits – Technical section
Topic: UN55 BBs not so good anymore?
Replies: 112
Views: 4493

Re: UN55 BBs not so good anymore?

This looks to be the same type of construction as the UN55 - can't say I'm a fan of the blue cups, but I could accept them if the unit works https://www.ebay.co.uk/itm/68x103-124-5mm-Bottom-Bracket-Bike-Bicycle-Axle-Square-Taper-Sealed-Cartridge/303320956062?_trkparms=aid%3D111001%26algo%3DREC.SEED...
by AndyA
17 Nov 2020, 9:51pm
Forum: Bikes & Bits – Technical section
Topic: COmpatability
Replies: 6
Views: 300

Re: COmpatability

Actually, the Campagnolo/Fulcrum lockrings aren't as expensive as I recall, Condor are selling them for £6.99 https://www.condorcycles.com/products/campagnolo-afs-disc-lockring?variant=32173789872266&wgu=281345_187205_16056496318825_e87a74288b&wgexpiry=1613425631&source=webgains&site...
by AndyA
17 Nov 2020, 8:45pm
Forum: Bikes & Bits – Technical section
Topic: COmpatability
Replies: 6
Views: 300

Re: COmpatability

Yes, but expect the rotor to be somewhere between 0 and 1mm out of position to the left or right. Similarily with the cassette. So expect to either adjust your gears and brakes every time, or shim the rotor and cassette as required, or pay someone else to do it. The fulcrum wheels are centrelock, or...
by AndyA
15 Nov 2020, 11:12pm
Forum: Bikes & Bits – Technical section
Topic: Stuck seatpost Blues redux
Replies: 6
Views: 295

Re: Stuck seatpost Blues redux

A good way to grip a stuck seatpost is with a set of aluminium tube blocks. I made some and they work well for medium stuck seatposts, sometimes I add some emery cloth between post and block for extra grip. If the post is really stuck they won't help, and its definitely possible to damage a frame li...
by AndyA
15 Nov 2020, 11:01pm
Forum: Bikes & Bits – Technical section
Topic: Repair a "sealed" bottom bracket
Replies: 21
Views: 908

Re: Repair a "sealed" bottom bracket

I've always felt slightly bad that I wasn't able just to unscrew a cartridge bottom bracket and just replace the bearings. After all there's a lot of metal which is senselessly beginning recycled... ...so I drew this 20201115_220456.jpg It looks like a normal bottom bracket apart from the grease in...
by AndyA
13 Nov 2020, 12:01am
Forum: Bikes & Bits – Technical section
Topic: Sturmey Archer AW; the thing that wouldn't die?
Replies: 31
Views: 1380

Re: Sturmey Archer AW; the thing that wouldn't die?

I sometimes use an oxalic acid bath to remove rust from steel, is there a good reason not to for hardened/high carbon steel like this?
by AndyA
12 Nov 2020, 7:51pm
Forum: Bikes & Bits – Technical section
Topic: Sturmey Archer AW; the thing that wouldn't die?
Replies: 31
Views: 1380

Re: Sturmey Archer AW; the thing that wouldn't die?

The latter hubs suffer from the rather fundamental issue that they will only build into a seriously dished, seriously weakened wheel. One of the Big Advantages of IGHs is that they build into wheels which are inherently stronger than those found on derailleur geared bikes; well not this one. All th...