Search found 2600 matches

by Samuel D
23 Apr 2019, 12:17am
Forum: Bikes & Bits – Technical section
Topic: Preventing spokes unwinding
Replies: 24
Views: 560

Re: Preventing spokes unwinding

fatboy wrote:Hubs are Sora and I'm around 85 to 90 kg so not light

Not light but not unusually heavy, and Sora hubs, even the latest ones, have less offset than comparable Shimano 11-speed hubs. So I’m slightly surprised at your trouble! Oh well.
by Samuel D
22 Apr 2019, 7:36am
Forum: Bikes & Bits – Technical section
Topic: Preventing spokes unwinding
Replies: 24
Views: 560

Re: Preventing spokes unwinding

The Open Elite (and the Open Pro you first said you were using) do have a lower tension limit than some rims. It’s still well over 100 kg, though.

You still haven’t mentioned what hub you’re using. I for one am curious about that and your weight.
by Samuel D
21 Apr 2019, 11:18am
Forum: Bikes & Bits – Technical section
Topic: 103 mm square-taper bottom brackets
Replies: 8
Views: 310

Re: 103 mm square-taper bottom brackets

I wonder if the hollow axle on the 7922 is forged then machined, I suspect it is. I suspect so too. Going the other way, do you think the LN-3912 is CrMo too? And how are its tapered flats made if not also machined? While we’re taking about bottom brackets, do the Shimano BB-UN55 and BB-UN26 have a...
by Samuel D
21 Apr 2019, 9:50am
Forum: Does anyone know … ?
Topic: Worn tyres on brand new bike
Replies: 13
Views: 715

Re: Worn tyres on brand new bike

The video is mostly out of focus but the tyres look new to me. They’d get as dusty rolling across a warehouse or a few metres over a gravel drive. A week or two of use will cause visible wear, not just dust. The scratch is minor but of course you hope a new bike to be scratch-free. The reality with ...
by Samuel D
20 Apr 2019, 1:42pm
Forum: Bikes & Bits – Technical section
Topic: Preventing spokes unwinding
Replies: 24
Views: 560

Re: Preventing spokes unwinding

What hub is it? Shimano ones have wide bracing angles but that tends to result in the left spokes having a low tension.

More to the point, 8/9/10-speed hubs have better geometry than 11-speed ones. Unless you’re using an 11-speed cassette you’d be wise to seek out an older hub.
by Samuel D
20 Apr 2019, 8:00am
Forum: Bikes & Bits – Technical section
Topic: Front QR lever - what o’clock?
Replies: 41
Views: 939

Re: Front QR lever - what o’clock?

Image

… from Retrogrouch Rules: Proper Bike Setup.

Jobst Brandt did the rear the same way but the front in front of the fork leg, like me.
by Samuel D
19 Apr 2019, 8:06pm
Forum: Bikes & Bits – Technical section
Topic: 103 mm square-taper bottom brackets
Replies: 8
Views: 310

103 mm square-taper bottom brackets

A friend has offered to give me, for free, in exchange for nothing, a pair of Shimano Dura-Ace FC-7410 cranks. These take a 103 mm square-taper bottom bracket that Shimano no longer makes. Tange Seiki makes two potential candidates: ⋅  LN-3912 with “forged steel solid axle” and “steel blac...
by Samuel D
19 Apr 2019, 5:43pm
Forum: Bikes & Bits – Technical section
Topic: Spa Audax build photos
Replies: 15
Views: 562

Re: Spa Audax build photos

By the way, weight as photographed was 9.4 kg.
by Samuel D
19 Apr 2019, 5:36pm
Forum: Bikes & Bits – Technical section
Topic: Spa Audax build photos
Replies: 15
Views: 562

Re: Spa Audax build photos

Just needs a pair of 32mm Hypers and it'll look reet :wink: The first time I wrecked my rear wheel on the old frame, I borrowed a friend’s wheel which happened to have a genuine 35 mm tyre. That fitted fine without a mudguard. However, the carbon fork won’t take more than a 28 mm tyre with reasonab...
by Samuel D
19 Apr 2019, 5:32pm
Forum: Bikes & Bits – Technical section
Topic: Spa Audax build photos
Replies: 15
Views: 562

Re: Spa Audax build photos

Can't make out if you've gone for form or function or just had some random parts - the brakes look great, but are they a match for modern ones? Then there's that crankset, it draws my eye from everything else, looks like it belongs on another bike or era. Have you heard my rants about pads rising i...
by Samuel D
19 Apr 2019, 8:35am
Forum: Bikes & Bits – Technical section
Topic: Spa Audax build photos
Replies: 15
Views: 562

Re: Spa Audax build photos

Modern compact bars just do not seem to me to provide as much scope for varying hand positions and grip on the bars. I also find that traditional lever shape much more comfortable than Shimano's modern STI levers with their large/bulky flat surface, which do not offer the same flexibility of choice...
by Samuel D
18 Apr 2019, 11:34pm
Forum: Bikes & Bits – Technical section
Topic: Simple guide to worn rear cassette
Replies: 14
Views: 544

Re: Simple guide to worn rear cassette

Various photographs were presented in this thread including a close-up by me and an example of extreme wear by rjb. While wear can readily be seen on a sprocket, I don’t believe it’s practical to visually judge whether a new chain will skip on a given sprocket. You have to try it and see. That is no...
by Samuel D
18 Apr 2019, 11:08pm
Forum: Bikes & Bits – Technical section
Topic: Derailleur hanger, B-screw, chain tension...?
Replies: 5
Views: 305

Re: Derailleur hanger, B-screw, chain tension...?

One thing you should triple-check before spending too much time with other adjustments is that the tab on the cable clamp of the rear derailleur is properly orientated. If this is wrong – and the correct orientation is 90 degrees off what you might expect at first glance – the shifting on small spro...
by Samuel D
18 Apr 2019, 10:55pm
Forum: Bikes & Bits – Technical section
Topic: Spa Audax build photos
Replies: 15
Views: 562

Spa Audax build photos

Some of you may know I recently got a 58 cm Spa Audax frame to replace my 54 cm model. The 54 cm had some battle scars but was good enough to build up in a different way for another user. Besides moving across my old components, deep-cleaning and lubricating everything as I went, I installed a pair ...
by Samuel D
17 Apr 2019, 4:08pm
Forum: Bikes & Bits – Technical section
Topic: Derailleur Hanger alignment tool ?
Replies: 45
Views: 1135

Re: Derailleur Hanger alignment tool ?

Since these tools don’t have an inboard nut, I tighten the screw into the hanger fairly hard, probably around 10 Nm. That way pressure is maintained on the side of the face that bears a reduced load during the bending of the hanger. With insufficient screw preload one side of the face would lift off...