Search found 119 matches

by bgnukem
29 Nov 2018, 1:04pm
Forum: Bikes & Bits – Technical section
Topic: Would new wheels really make a difference to my speed?
Replies: 92
Views: 2766

Re: Would new wheels really make a difference to my speed?

Regardless of actual speed difference, I find a lightweight pair of wheels make the bike more enjoyable to ride, it's easier to accelerate up to speed, the steering is quicker (reduced gyroscopic effect), potentially there's an improvement in braking (less rotational mass to slow), and I do seem to ...
by bgnukem
27 Sep 2018, 4:38pm
Forum: Bikes & Bits – Technical section
Topic: Hub Dynamo for winter commute.
Replies: 25
Views: 1391

Re: Hub Dynamo for winter commute.

There are 2 types of SP dynohub - the SD8 or SV8 (disc and rim brake), and PD8 or PV8 The S?8 models are the equivalent of the Sondelux, with fewer magnets for smaller wheels and lower rolling resistance, and give less power at low speed when used with a 700c wheel which spins slower at the same sp...
by bgnukem
26 Sep 2018, 1:50pm
Forum: Bikes & Bits – Technical section
Topic: Hub Dynamo for winter commute.
Replies: 25
Views: 1391

Re: Hub Dynamo for winter commute.

Having used both systems, I like the low weight and looks of the SP dynohub but find that it cuts the light at lower speeds than the Shimano hubs (have had both 3N71 and 3N80), which can be an issue manoeuvring at low speeds in winter, e.g. making a U-turn on unlit lanes. My commuter has 26" wh...
by bgnukem
20 Sep 2018, 12:41pm
Forum: Bikes & Bits – Technical section
Topic: N+1: A fast commuter reverie
Replies: 48
Views: 1515

Re: N+1: A fast commuter reverie

As a daily commuter myself I reckon it's worth spending decent money to buy a quality bike for commuting. My commuter is currently 12 years into it's commuting career and has saved me many times its value and upkeep in bus fares and petrol. It cost around £900 to build back in 2000. I find I ride th...
by bgnukem
13 Sep 2018, 5:47pm
Forum: Bikes & Bits – Technical section
Topic: Spa Cycles' Disc Braked Tourer and Audax
Replies: 89
Views: 6935

Re: Spa Cycles' Disc Braked Tourer and Audax

Also interested in how harsh the ride is compared to a rim-braked bike. I recently fitted Surly disc forks to my 26"-wheeled commuter after getting fed up of wearing out today's chocolate rims, but the stiffer fork made for a very unyielding ride quality noticeably harsher than before (and the ...
by bgnukem
13 Sep 2018, 10:35am
Forum: Bikes & Bits – Technical section
Topic: Spa Cycles' Disc Braked Tourer and Audax
Replies: 89
Views: 6935

Re: Spa Cycles' Disc Braked Tourer and Audax

Me....33.5" leg ….54 frame, 10 cm seat post (total 64) You ...36.5" leg ....57 frame, 26cm seat post (total 83) So your leg is 7 or 8 cm (3") longer than mine, and your saddle is 19 cm higher......seven and a half inches. That is absolutely bonkers. Bgnukem, Something's going on. Col...
by bgnukem
17 Aug 2018, 5:44pm
Forum: Bikes & Bits – Technical section
Topic: Spa Cycles' Disc Braked Tourer and Audax
Replies: 89
Views: 6935

Re: Spa Cycles' Disc Braked Tourer and Audax

Don't know what to say RE riding position but I seem to get on with a high saddle position and I'm pretty sure dropping it by 6cm would make me pretty uncomfortable very quickly! I've never broken a frame yet but a friend of mine cracked the weld on his Giant between the top and seat tubes, the comp...
by bgnukem
8 Aug 2018, 10:42pm
Forum: Bikes & Bits – Technical section
Topic: Spa Cycles' Disc Braked Tourer and Audax
Replies: 89
Views: 6935

Re: Spa Cycles' Disc Braked Tourer and Audax

bgnukem could you give us an actual on-bike measurement of BB -> saddle top in cm as I can't see how your maths is working out? 36.5in inside leg is 92.7cm a 57.5cm frame + 450mm seapost, with 100mm in the frame means 57.5cm + 35cm = 92.5cm from BB centre to saddle rail clamp, assume another 20mm (...
by bgnukem
3 Aug 2018, 12:01pm
Forum: Bikes & Bits – Technical section
Topic: Do we really need hub dynamos any more?
Replies: 71
Views: 3927

Re: Do we really need hub dynamos any more?

I used a bottle dynamo for a while commuting but the noise, the drag and slippage in the wet got on my nerves. Certainly there's a lot less drag with a hub dynamo. Used with LED front lights it can be difficult to tell of the lights are on or off. In Autumn/Winter I tend to leave the lights on all t...
by bgnukem
3 Aug 2018, 11:54am
Forum: Bikes & Bits – Technical section
Topic: Spa Cycles' Disc Braked Tourer and Audax
Replies: 89
Views: 6935

Re: Spa Cycles' Disc Braked Tourer and Audax

Thanks for the reply Colin. Interesting that the available carbon fork dictates the size of the frame! I guess that's one advantage of the steel-forked models! I can appreciate the need for a longer steerer as I use 40 degree stems on all my bikes to get the bars up (but still below saddle height) e...
by bgnukem
2 Aug 2018, 11:19am
Forum: Bikes & Bits – Technical section
Topic: Do we really need hub dynamos any more?
Replies: 71
Views: 3927

Re: Do we really need hub dynamos any more?

Wouldn't swap my hub dynamos for any number of expensive battery lamps, particularly for commuting. The hub goes on the bike in September and stays on until the following April. Always got instant light whenever I need it. No 'battery life anxiety' as they inevitably die before the rated running tim...
by bgnukem
1 Aug 2018, 6:12pm
Forum: Bikes & Bits – Technical section
Topic: Spa Cycles' Disc Braked Tourer and Audax
Replies: 89
Views: 6935

Re: Spa Cycles' Disc Braked Tourer and Audax

Hi Colin. Thanks for the reply. Couldn't find any geometry info on the website yesterday so will have another look. I need a larger frame than 58cm as otherwise I have too much seatpost showing. E.g. My commuting bike is only 57.5cm (bought 20 years ago) and I need a 450mm seatpost to make it fit. M...
by bgnukem
1 Aug 2018, 11:41am
Forum: Bikes & Bits – Technical section
Topic: Spa Cycles' Disc Braked Tourer and Audax
Replies: 89
Views: 6935

Re: Spa Cycles' Disc Braked Tourer and Audax

Question for Colin: I liked the look of the Spa Elan very much as I've been looking for a light-ish, fast-ish bike with decent tyre and mudguard clearance for a while but sadly they don't make the bike in a large enough size for me - 58cm is the biggest. I'm also now interested in the Aubisque and i...
by bgnukem
1 Jun 2018, 1:50pm
Forum: Bikes & Bits – Technical section
Topic: 180 or 185mm cranks
Replies: 11
Views: 632

Re: 180 or 185mm cranks

Cheers for the replies. Might be able to buy the Carmina cranks more cheaply from that other supplier and get the other bits via TA themselves. Hard to explain why but I do feel more comfortable riding longer cranks, perhaps my slow pedalling style favours pushing and not spinning but with long legs...
by bgnukem
31 May 2018, 1:17am
Forum: Bikes & Bits – Technical section
Topic: 180 or 185mm cranks
Replies: 11
Views: 632

Re: 180 or 185mm cranks

Thanks for the replies. Didn't know the Carmina was still available special order and though not cheap (£270 for cranks and spider) they might be the only option for 185mm cranks. The Middleburn 'set is cheaper but looks like I'd need the R01 cranks for a road bike (RS7 are MTB with high Q factor) a...