Search found 189 matches

by TwoWheelsGood
17 Mar 2015, 11:48pm
Forum: Bikes & Bits – Technical section
Topic: Sturmey Archer WRD5 (W) Adjustment
Replies: 13
Views: 4356

Re: Sturmey Archer WRD5 (W) Adjustment

One review claims that these hubs are very reliable if set up properly, which makes me think that the seemingly-dodgy SLS50 thumbshifter could also be the cause of other problems where the hub gets damaged due to being ridden out of adjustment? There are also push button and twist shifters available that are worth trying for a better shift action.

And a review of the Pashley Speed 5 did mention the "not being able to tell two gears apart" problem as well; the Speed 5 uses the same SLS50 thumbshifter.
by TwoWheelsGood
5 Jan 2015, 12:08pm
Forum: Does anyone know … ?
Topic: SRAM G8 & G9 Hubs...
Replies: 10
Views: 4153

Re: SRAM G8 & G9 Hubs...

Noticed that Raleigh are now offering a bike with the SRAM G8 hub:

http://www.raleigh.co.uk/ProductType/Pr ... 6&pg=11400

My local bike shop has one but unfortunately don't offer test rides so can't try one to see what it's like. However the G8 twist shifter has a stiffer, more 'positive' action compared to an older Nexus 8 twist shifter (my only point of reference), accompanied by a louder 'click'.

The good news is that Raleigh are now also distributing SRAM parts in the UK alongside Fisher, which should make obtaining and maintaining SRAM hub gears easier, especially as Raleigh dealers are selling bikes with SRAM hub gears fitted as original equipment. As Brucey says, the G8 sight unseen looks somewhat redundant compared to the Nexus 7 (one extra gear, similar range and a higher cost/weight), but the G9 could be an interesting alternative to an Alfine/Nexus 8 and is still cheaper than an Alfine 11 (perhaps less fiddly to maintain as well?), especially if you dislike the Alfine 8's uneven gear spacing that's perhaps its only weakness. It will be interesting to see an efficiency comparison between the G9 and the Alfine 8/11, especially as the 11's less efficient than the 8 according to one test.
by TwoWheelsGood
21 Oct 2014, 12:12am
Forum: Bikes & Bits – Technical section
Topic: Hi vis jacket
Replies: 79
Views: 6039

Re: Hi vis jacket

SteveHunter wrote:Unfortunately there are no reliable statistics that show if you are more or less likely to be hit if you are wearing Hi Viz.

Forgotten the source but I've seen one survey that claims it makes no difference whatsover at least during the daytime, and I personally believe this to be the case.

The only time it may make a difference is when there's very poor visibility/lighting and there's a vehicle travelling just a bit too fast for the prevailing road conditions, but even then it's really up to the driver to avoid hitting parked cars/the kerb/pedestrians/cats/foxes/etc. in the road, and nearly all pedestrians/cats/foxes/etc. won't be wearing reflective jackets. And I've seen a pedestrian walk into the path of a cyclist wearing such a jacket (in broad daylight) so it doesn't protect against absent-mindedness either.

Emergency service workers wear such jackets because they need to find each other quickly when working in a large crowd of people, but a cyclist on a road or path is just another road or path user. That's the difference.
by TwoWheelsGood
21 May 2014, 11:20am
Forum: Bikes & Bits – Technical section
Topic: Bottom Bracket - Average Life Expectancy?
Replies: 29
Views: 6247

Re: Bottom Bracket - Average Life Expectancy?

I was told by a dealer that bike manufacturers often fit cheaper components in places that aren't so obvious in order to save money, so a particular bike might have an expensive Shimano derailleur but the bottom bracket could be the cheapest they could get away with using in order to save money. (Especially true in relation to bikes costing under £500, perhaps.)

Certainly I've been amazed by (a lack of) bottom bracket life expectancy especially for new bikes purchased during the last 10 years or thereabouts (the problem seems to have got much worse recently), and the cheap bike I bought late last year's now making protest noises under hard pedalling...
by TwoWheelsGood
14 May 2014, 9:10pm
Forum: Does anyone know … ?
Topic: Wold Cycles
Replies: 5
Views: 9151

Re: Wold Cycles

I've been looking at Wold as well and they're on my shortlist for a future custom cycle if I decide to go down that route. Wold Cycles only officially launched at last month's Bespoked show so it's too early to obtain any meaningful feedback about their products unless one of their early customers reads this message and decides to reply. Having said that, Wold has the involvement of Dominic Thomas who used to work for Genesis Bikes as "bike designer" so they should know what they're doing.

Unless your friend is prepared to wait for purchaser feedback and magazine reviews, perhaps the short-term answer is for your friend to visit Wold in person, talk to them and see the production process if possible; it's up to them whether or not they want to proceed as a consequence. If not a Wold then there are other companies like Shand Cycles (http://www.shandcycles.com/) in Central Scotland who do something similar, though of course there's an ever-growing selection of other framebuilders who provide a full custom build service.
by TwoWheelsGood
6 May 2014, 2:30pm
Forum: Bikes & Bits – Technical section
Topic: Sturmey Archer 5-speed ( sprinter, etc. )
Replies: 65
Views: 32700

Re: S.A. 5speed

Sturmey Archer's 2014/2015 Catalogue:

http://www.sunrace.cz/dokumenty/sturmey ... 4-2015.pdf

Big disappointment with the new C50 series is the weight; the lightest hub in the range being 1,950g (heavier than a Rohloff 14 speed hub). And the S-RF5(W) has been discontinued, though there are similar-looking TS-RC5 and TS-RF5 hubs listed under the Quadricycle/Tricycle category.
by TwoWheelsGood
26 Apr 2014, 11:16am
Forum: Bikes & Bits – Technical section
Topic: Sturmey Archer 5-speed ( sprinter, etc. )
Replies: 65
Views: 32700

Re: S.A. 5speed

SA_SA_SA wrote:For 3 speeds, how come sunrace SA don't raid the SA back catalogue of patents, for neater ways of making a simpler NIG hub?

They also patented some different 5 speeds but never made them...

Sunrace SA may have done this with their forthcoming C50 5 speed hub; they claim that you don't have to stop pedalling to change gear and it uses a rotary gear select mechanism. Of course this hub has yet to be proven and may not be available for a while yet; there's still very little information available online but this page shows two hubs and a twist shifter:

http://www.radmarkt.de/nachrichten/stur ... -range-aus

There's also a new SA 4 speed hub but that has direct drive at first gear just like their 8 speed hub. Also of interest is a new SRAM 3 speed hub with a kick back gear change, though the disadvantage appears to be that you can't change down a gear without braking, and a special version will be produced that can also power machinery. Available perhaps by the end of this year:

http://www.bikerumor.com/2014/04/07/sra ... huck-corn/
by TwoWheelsGood
20 Feb 2014, 11:31pm
Forum: Bikes & Bits – Technical section
Topic: custom made frame vs off the peg
Replies: 45
Views: 14157

Re: custom made frame vs off the peg

These are the steps I would personally take for a custom-built frame when I can afford to (and will hopefully do this sometime later this year).

Firstly find an off-the-peg bicycle you (almost) really like, and ride it for a few weeks to get used to it and its characteristics. Then learn about and/or get the advice of a bike fitting 'expert' BUT you don't have to stick with their advice if you dislike the results. Try the suggested riding position for a while before making a decision, then decide whether to stick with it or make further tweaks or revert to a position that's more comfortable for you. Then get a custom builder to replicate all the necessary contact points/geometry, though getting things like the required level of comfort/stiffness right will require further care if changing the frame material from, say, aluminium to steel.

From what I've read about the experiences of other people, it's still possible to be disappointed in the longer term even if you've spent a large sum of money on a very expensive custom frame from a highly respected builder, but any discontent appears to relate to having subsequently tried another bicycle and finding that you prefer its steering characteristics or some other factor, therefore take time to decide on such characteristics (and its intended use) before committing to a specific geometry.
by TwoWheelsGood
31 Oct 2013, 11:07pm
Forum: Cycling Goods & Services - Your Reviews
Topic: Harry Halls Cycles - Manchester
Replies: 19
Views: 53879

Re: Harry Halls Cycles - Manchester

If Urmston's accessible to you then you could try Eddie McGrath Cycles; I've personally had excellent service from them. Also some suggestions that aren't personal recommendations but I've heard good things about Ken Fosters Cycle Logic (Chorlton), Pop Up Bikes in Corporation Street and the revolveMCR mobile workshop (there's a call out charge if they come to you; better value if you have 2+ bikes to service/repair).
by TwoWheelsGood
21 Oct 2013, 6:58pm
Forum: Bikes & Bits – Technical section
Topic: Hub gear ideas
Replies: 66
Views: 6907

Re: Hub gear ideas

MartinC wrote:I preferred the old Spectro 7 for commuting/utility (not enough range for touring or MTB though). Seven gears was enough and you could spend the most time in the efficient gears if you chose spocket and ring carefully. The one extra gear on the Alfine 8 isn't much of a benefit but going from most to least efficient between 4 and 5 is a pain. OK, you get efficient gears in 1 and 2 but if you ride somewhere hilly you'd want a better range anyway. I'd like to understand what the deal with the G8 is.

New SA 5' looks interesting. In my book 8 gears is too much, 3 a bit limited and 7 is only a bit better than 5 - so good and common (in the UK) 5 speeds are worth having. Rotary shifters are good too - I hope it's a SRAM style i-motion one rather than the fiddly Shimano cassette joint.

I've tried a bike with the Alfine 8 hub and was distinctly underwhelmed despite being a fan of hub gears. The gap between gears 4 and 5 was more noticeable than I thought it would be, the hub was slow to change between certain gears and it didn't feel that efficient at times either, though at least Shimano have now changed the push-button shifter so that it shifts the same way as their derailleur set-ups (the old shifter was distinctly annoying for that reason alone). The Alfine 11's supposedly faster to shift and feels more efficient but of course is more expensive (initial purchase price as well as an expensive and mandatory oil change early on) and less tolerant of abuse.

The SRAM G8 could be good but its relatively narrow overall gear range does make me question its actual worth; all that additional complexity, weight and potential for efficiency loss over a 5 speed hub for something that doesn't exactly give that much back in return aside from narrower gear steps, though I suspect that the G8's target market relates to heavy, continental-style utility bikes that could be towing trailers. If the hub was lighter, the bike would be lighter and there would arguably be less need for narrow(er) gear steps as a consequence.

And then there's the new SA 5 speed hub, which is arguably the most interesting of the lot for many purposes, having a wider gear range than the original SA 5 speed hub but narrower than the 256% of its successor (which is possibly too wide a range for only 5 gears) but still wide enough to offer benefits over a tradtional 3 speed hub. There's also an extremely rare Shimano Nexus 5 speed hub (overall range 206%, gears roughly equivalent to 2,4,5,6,7 of a Nexus 7) which may be officially launched next year (my guess) if Shimano decides to make it more widely available, but it doesn't offer a significantly greater range compared to a 3 speed hub.
by TwoWheelsGood
18 Jun 2013, 1:41pm
Forum: Bikes & Bits – Technical section
Topic: Saracen Kili Comp Retro Advice needed desperately !!
Replies: 4
Views: 1017

Re: Saracen Kili Comp Retro Advice needed desperately !!

If you bought a bike because it's a "legendary classic" then my advice is to keep it as standard as possible apart from a few minor changes to your personal preference. Otherwise if you just want a modern mountain bike with front suspension, etc., then it would be easier to buy one off the shelf instead as opposed to modifing an old bike which in particular may not have been designed with suspension in mind. Only you know whether or not you really need front suspension, and that will also depend on how rough the terrain is where you want to ride it.

What I would do now is to get a local bike shop to give it a full service, because they will be able to check and adjust the brakes and gears as well as lubricating various parts to ensure that everything runs smoothly after a long period of storage. (They may also be able to give you advice on upgrades.) After it has been set up correctly for you, ride the bike in the places where you want to ride it; only then will you know whether or not the bike is basically what you want or whether you will be better off selling the bike unmodified (most likely it will worth more to the right buyer) and buying something more modern instead.

The Retrobike forums also provide a wealth of information and advice, and they will be able to guide you as to what change(s) are required if you decide to keep the bike.
by TwoWheelsGood
12 Jun 2013, 11:35am
Forum: Does anyone know … ?
Topic: 25mm Paselas.
Replies: 7
Views: 1155

Re: 25mm Paselas.

25mm is a sizeable 25% increase from the previous 20mm so it's possible that the tyre may have been too big for the rim especially given its flexible sidewalls.

As for any problems relating to the previous 28mm Pasela tyre, bear in mind that they may not exist with either the newly upgraded PT model or with the white version of the same tyre. I'm thinking of trying the 28mm tyre myself sometime because it's a good performer as well as being good looking. (I've had a good experience with the 32mm TG tyre.)
by TwoWheelsGood
23 Apr 2013, 10:28pm
Forum: Bikes & Bits – Technical section
Topic: Bike Painting
Replies: 5
Views: 577

Re: Bike Painting

tatanab wrote:A bit closer to you - Argos in Bristol - also offer a collect and return service for £35 http://www.argoscycles.com/faq/how-to-post-a-frame/ Resprays start at £140, I've had several done over the years.

You might also try Rotrax in Southampton, but being local I guess you've already done that. http://rotraxcycles.wordpress.com/category/details/ http://www.cyclinglinks.co.uk/bike-shop ... ails/2575/

The Rotrax shop address mentioned on cyclinglinks.co.uk is out of date (the retail shop closed down several years ago); use their contact page http://rotraxcycles.wordpress.com/about/ instead.

However on their contact page it states that Rotrax use C&G Finishers for their enamelling and they're based in Liverpool, though Rotrax may be able to deal with them on your behalf. Demon Frameworks are also based in Southampton and they apparently use the same paint shop as Feather Cycles because it has a top-class reputation: http://www.demonframeworks.com/
by TwoWheelsGood
2 Mar 2013, 11:14pm
Forum: Bikes & Bits – Technical section
Topic: Squeaking Sram hubgear
Replies: 37
Views: 3365

Re: Squeaking Sram hubgear

ukdodger wrote:Interesting. The Sram I-motion 9 was discontinued last year. Wonder what the replacement will be. If any.

The replacement is the 8 speed SRAM G8:

http://www.sram.com/sram/urban/products/g8

Indeed SRAM claim "Shifting under load or when stopped", but there are supposedly fundamental differences between the G8 and the innards of other hub gears.

Apparently the G8 was meant to go into production last November but production has only just commenced:

http://www.bikebiz.com/news/read/sram-g ... ins/014441

Despite now being in production there are still remarkably few technical details supplied for the G8 apart from a weight for the hub with coaster brake (2188g). This table is the only thing I've found that mentions an overall gear range (260%), but the figure conflicts with a SRAM employee who stated a figure just above 300%:

http://www.test.de/Fahrradtechnik-im-Ue ... 8-1791324/

From my perspective, the overall range really needs to be around 300% otherwise it's just a pointlessly heavy and less well-proven alternative to the Shimano Nexus 7.
by TwoWheelsGood
13 Dec 2012, 8:38pm
Forum: Bikes & Bits – Technical section
Topic: Shimano Alfine 11 - Longer term reliability
Replies: 833
Views: 178711

Re: Shimano Alfine 11 - Longer term reliability

Someone really ought to produce an updated version of these hub gear efficiency tests:

http://www.ihpva.org/HParchive/PDF/hp52-2001.pdf

(Some of the tested hubs have also been further improved since the report's publication therefore the quoted efficiency figures may also be out of date.)