Search found 309 matches

by interestedcp
28 Mar 2020, 1:16pm
Forum: Bikes & Bits – Technical section
Topic: Spokes; choosing between the 'Big Three'
Replies: 15
Views: 836

Re: Spokes; choosing between the 'Big Three'

I find this pretty mysterious because AFAICT Sapim use the same exact wire (from Sandvik I think) as DT. If so they must not apply the same QA to it or something I am pretty sure that DT Swiss and Sapim doesn't use the exact same spoke wire. Can't find a really authoritative source anymore, but app...
by interestedcp
24 Feb 2020, 7:17pm
Forum: Bikes & Bits – Technical section
Topic: A better chain wear checker?
Replies: 43
Views: 1844

Re: A better chain wear checker?

Hate to admit I don't understand why using most chain checkers is not accurate (sorry Brucey). All that stuff about rollers and pins does my head in; too many words where a nice diagram would be much clearer to me. This old site that discusses chain wear checkers has several diagrams and illustrati...
by interestedcp
6 Feb 2020, 6:33pm
Forum: Bikes & Bits – Technical section
Topic: Servicing a Shimano Dynamo Hub
Replies: 24
Views: 1408

Re: Servicing a Shimano Dynamo Hub

Have You seen this document? https://www.docdroid.net/0CQRiqZ/overhauling-shimano-dynamo-hubs-dh-3n72.pdf Thank you. Picture = 1000 words. I love a bit of guts and gore. Here are some photos showing the overhauling a Shimano 3N80 dynamo hub: https://www.flickr.com/photos/28712360@N08/albums/7215764...
by interestedcp
28 Jan 2020, 11:55pm
Forum: Bikes & Bits – Technical section
Topic: B&M Quality.
Replies: 36
Views: 2545

Re: B&M Quality.

I have had two Busch Muller rear battery lights pack up on me within two months of purchase. Other brands I have owned have lasted for years. I am of the opinion that B&M are expensive and substandard in quality. Anyone else had issues. I don't share that opinion after having used B&M light...
by interestedcp
28 Jan 2020, 11:19pm
Forum: Bikes & Bits – Technical section
Topic: B&M Quality.
Replies: 36
Views: 2545

Re: B&M Quality.

I have bought a Busch Muller rear battery light D Toplight at nearinf £20. I don't think it is a fake. Assuming it is the D Toplight model 328BL, that design is at least 12 years old probably 16 years. They have tweaked it slightly over the years and still sell spare parts to it (the red transparen...
by interestedcp
7 Jan 2020, 2:13am
Forum: Bikes & Bits – Technical section
Topic: Hub Dynamo for winter commute.
Replies: 166
Views: 7600

Re: Hub Dynamo for winter commute.

I do however know a couple of Brompton-Shimanos that broke. They were probably Shimano DH-F703 Capreo dynamo hubs. These hubs are cheap entry level hubs that are far from having the high quality bearings and build quality as the high end Shimano dynamo hubs like the Shimano 3N72. All the Shimano hi...
by interestedcp
26 Nov 2019, 11:53pm
Forum: Bikes & Bits – Technical section
Topic: Tyre Tales
Replies: 9
Views: 774

Re: Tyre Tales

I have been using Gatorskins for many years on my commuter bike since the choice of 28mm tyres once was very limited; they did roll well and had reasonably wear and puncture protection and were cheapish too. A weak point was always their not so good road grip, especially in the wet. But for years th...
by interestedcp
14 Nov 2019, 1:42pm
Forum: Bikes & Bits – Technical section
Topic: Spoke length check
Replies: 13
Views: 409

Re: Spoke length check

The same figures come out using https://leonard.io/edd/ Any idea what nipple length calculaors default to? I normally go for 14mm. The most common ones assume a standard 12 mm nipple, since both Sapim and DT Swiss and probably many others informally have standardized this as the cheap, standard &qu...
by interestedcp
14 Nov 2019, 1:15pm
Forum: Bikes & Bits – Technical section
Topic: Spoke length check
Replies: 13
Views: 409

Re: Spoke length check

Can someone check my numbers for spokes before I order? Rim ERD 548 The above ERD is extremely likely to be wrong, because the manufacturer says " 548mm (not including nipple head dimension) ". The problem with supplying a correct ERD number is that ERD depends on the dimensions of the ni...
by interestedcp
2 Nov 2019, 7:04pm
Forum: Bikes & Bits – Technical section
Topic: Dynamos - Hub or Bottle?
Replies: 210
Views: 10233

Re: Dynamos - Hub or Bottle?

incidentally I have often wondered if published tests are skewed in favour of generators that use sealed bearings, in that hubs are tested 'as is' i.e. without adjustment or lubrication. I am pretty sure they are tested "as is". The best dynamo hub tester I know off, Olaf Schultz, have ne...
by interestedcp
27 Oct 2019, 12:21pm
Forum: Bikes & Bits – Technical section
Topic: Measuring Spoke Length
Replies: 11
Views: 442

Re: Measuring Spoke Length

I'm confused, aren't those just extension lines? It doesn't suggest any difference in measurement to me. Yes, they are extension lines. What the red lines show is the two points on the spoke where DT Swiss measures spoke length from; the bottom of the spoke (threaded end), and from the start of the...
by interestedcp
27 Oct 2019, 1:38am
Forum: Bikes & Bits – Technical section
Topic: Measuring Spoke Length
Replies: 11
Views: 442

Re: Measuring Spoke Length

When doing this do you position the spoke head in the cut-out in the ruler like how the spoke head would sit in the spoke hole of a hub? Thanks. It is the only way that makes sense to me considering how the most common spoke-length calculation formula describes spoke-length as an ideal line from th...
by interestedcp
2 Oct 2019, 12:46pm
Forum: Bikes & Bits – Technical section
Topic: Buchel stainless mudguards, sold without stays
Replies: 4
Views: 351

Re: Buchel stainless mudguards, sold without stays

One thing that confuses me is they seem to be sold without stays, so how does one fit them? Just had a look in their 2019 catalogue and all the stainless mudguards was sold without any fittings. Büchel is one of those "umbrella" companies that distributes the whole range of bicycle access...
by interestedcp
23 Jun 2019, 2:43pm
Forum: Bikes & Bits – Technical section
Topic: Hub gear spare parts suppliers
Replies: 12
Views: 466

Re: Hub gear spare parts suppliers

The Hub is a Sach’s Pentasport (just checked) I haven’t spotted the year of manufacture but now know where to look, thanks. I believe that it has a steel shell, so hopefully it’s robust then. Oh, so it is a Pentasport. While the Pentasport is often labeled Sram/P5, its proper name is I believe; &qu...
by interestedcp
22 Jun 2019, 7:30pm
Forum: Bikes & Bits – Technical section
Topic: Hub gear spare parts suppliers
Replies: 12
Views: 466

Re: Hub gear spare parts suppliers

First, there are different variations/models of the Sram P5, but assuming it isn't a drum brake version, it probably is either is the "SRAM P5 MH5215" (produced until sep. 2005) or the "SRAM P5 MH5215 Spectro" (produced until sep. 2005).* The production year and week ought to be ...