Search found 316 matches

by interestedcp
25 Sep 2020, 11:35am
Forum: Bikes & Bits – Technical section
Topic: Dynahub lamp recommendations
Replies: 37
Views: 1000

Re: Dynahub lamp recommendations

There is indeed a bewildering amount of dynolights on the market, however I think that in reality there are only a few models that are relevant for you (I assume a few things based on your current setup). The 80 lux B&M CYO Premium (model nr. 1752QSNDI): https://www.bumm.de/en/products/dynamo-sc...
by interestedcp
18 Sep 2020, 2:18pm
Forum: Bikes & Bits – Technical section
Topic: Bike for a heavy rider
Replies: 6
Views: 319

Re: Bike for a heavy rider

When it comes bicycle durability, simple weight limits are difficult to issue because dynamic forces and the muscle power of the rider plays a significant role too. A 700c wheel with 36 spokes has a theoretical static load carrying capacity of around 400 kg. But because of dynamic forces like landin...
by interestedcp
23 Jul 2020, 10:18pm
Forum: Bikes & Bits – Technical section
Topic: SHIMANO DH-3N72 dynamo - less available?
Replies: 15
Views: 752

Re: SHIMANO DH-3N72 dynamo - less available?

Did the disc version DH-3D71 also have thin cones? The LH cone is different. I have no personal experience with the DH-3D71 or its cones, but from an online photo from a Dutch dealer that amazingly has a cone in stock, it doesn't give me confidence that the cone walls are thicker. A DH-3D71 LH cone...
by interestedcp
23 Jul 2020, 6:35pm
Forum: Bikes & Bits – Technical section
Topic: SHIMANO DH-3N72 dynamo - less available?
Replies: 15
Views: 752

Re: SHIMANO DH-3N72 dynamo - less available?

Slight update. Shimano's "Line-up chart 2020-21" contradicts their website. According to the line up chart, the only 3W "Sport" dynamo beside the UR70X series still in production this year will be the DH-3N72. It makes sense in that the UR700 series doesn't have a non-disc versio...
by interestedcp
23 Jul 2020, 3:50pm
Forum: Bikes & Bits – Technical section
Topic: SHIMANO DH-3N72 dynamo - less available?
Replies: 15
Views: 752

Re: SHIMANO DH-3N72 dynamo - less available?

Rose bikes claim to have the 36H SHIMANO DH-3N72 dynamo in black or silver. https://www.rosebikes.co.uk/shimano-dh-3n72-hub-dynamo-287963?product_shape=black I have one of each in my basket at the moment, so I assume that means they are in stock. Better remove them now or I will find I have two sur...
by interestedcp
23 Jul 2020, 1:49pm
Forum: Bikes & Bits – Technical section
Topic: SHIMANO DH-3N72 dynamo - less available?
Replies: 15
Views: 752

Re: SHIMANO DH-3N72 dynamo - less available?

As I understand it, all the Shimano "Sport" 3 Watt hub dynamos like the 3N72, 3N80, T780 etc. are being discontinued, except the Alfine DH-S501 and the DH-T8000-3D (identical to the 3D80 hub except branding). The DH-UR70X-3D series is the new 3W "Sport" Dynamo series. Baring the ...
by interestedcp
17 Jun 2020, 12:26am
Forum: Bikes & Bits – Technical section
Topic: Servicing a Shimano Dynamo Hub
Replies: 47
Views: 2226

Re: Servicing a Shimano Dynamo Hub

So it would be easily serviceable if it wasn't for the fact the both cones are quite different, the internal assembly cone (RH cone) is not sold as a spare and, by the look of it, I am almost certain it doesn't match any other Shimano cone that you can source. Thanks to your photos, I am now quite ...
by interestedcp
28 Mar 2020, 1:16pm
Forum: Bikes & Bits – Technical section
Topic: Spokes; choosing between the 'Big Three'
Replies: 20
Views: 1274

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: 1958

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: 47
Views: 2226

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: 2627

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: 2627

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: 7997

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: 815

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: 445

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...