Search found 53 matches

by Tompsk
17 Nov 2019, 10:48pm
Forum: Does anyone know … ?
Topic: Are Radial cycles still going?
Replies: 1
Views: 105

Are Radial cycles still going?

I bought an alloy frame set and carbon fork from Radial Cycles but the web site today had "out of stock" on every item I looked at (I didn't look at every item though!). Does anyone know if they are still trading? If not a pity as I got what seemed a good product (apart from what I think w...
by Tompsk
2 Nov 2019, 10:43pm
Forum: Does anyone know … ?
Topic: Bike security
Replies: 38
Views: 2448

Re: Bike security

Reminds me of the old saying that all bikes weigh the same, or rather that all bikes plus suitable lock weigh the same.

Light bike + secure (heavy) lock = heavier bike + less secure (lighter) lock.

Although not strictly true there is some truth in there :-)
by Tompsk
31 Oct 2019, 4:44pm
Forum: Bikes & Bits – Technical section
Topic: mudguards are back in fashion
Replies: 10
Views: 649

Re: mudguards are back in fashion

I'd agree they probably contravene something (isn't there a rule about things extending in front of a vertical line above the front hub?) But look at all that advertising space :-) Broad down tubes are loved for the advertising space as well as aero effect.
by Tompsk
28 Oct 2019, 7:58am
Forum: Bikes & Bits – Technical section
Topic: Long vertical/height adjustment cantilever & v-brakes
Replies: 15
Views: 749

Re: Long vertical/height adjustment cantilever & v-brakes

The item referenced below looks ideal for me. Sadly an internet search suggests they are discontinued :-( Does anyone know of an alternative or NOS source for these? if the bosses are the same spacing you could always pack one of these in your spares kit http://rs.130928.mrsite.com/images/thumbs/000...
by Tompsk
23 Oct 2019, 7:25am
Forum: Bikes & Bits – Technical section
Topic: Chainline considerations when using triple chainset as double
Replies: 6
Views: 293

Re: Chainline considerations when using triple chainset as double

My preference is to have the chainrings slightly more 'inboard' than 'central'. Reason being is higher chain tension when on the smaller ring for a given pedal push so the chain losses / wear will be worse. This assumes of course that you don't plan to cross the chain on a regular basis! As for bott...
by Tompsk
20 Oct 2019, 9:58pm
Forum: Bikes & Bits – Technical section
Topic: 9 into 7 won't go.....
Replies: 9
Views: 707

Re: 9 into 7 won't go.....

Ditto, 9 of a 10 on a 7 works well too. See Sheldon Brown pages on this topic.
by Tompsk
18 Sep 2019, 9:33pm
Forum: Bikes & Bits – Technical section
Topic: Disc Brake Rotor Torque Ratings?
Replies: 6
Views: 379

Re: Disc Brake Rotor Torque Ratings?

AFAIK the bolts holding on a disc rotor act like pegs with most of the force at 90 degrees to the thread. The torque they are done up to must be sufficient to stop them coming undone and to resist the (comparatively small) forces of the disc moving sideways. NB the bolts holding car and lorry wheels...
by Tompsk
23 Jul 2019, 7:20am
Forum: Bikes & Bits – Technical section
Topic: Bike fit - change from mtb to tourer with drop bars
Replies: 27
Views: 1911

Re: Bike fit - change from mtb to tourer with drop bars

Brake levers seem to be too far from the bars. On the drops behind the brake levers she can only reach the levers with the end of her fingers. On the hoods it's even worse. Looks like the bike industry 'one size fits all' for the brifters (brake & shifters) falls down here. I'm not sure if you ...
by Tompsk
20 Jul 2019, 6:29pm
Forum: Bikes & Bits – Technical section
Topic: wife's triple...difference in mid chain ring distance....
Replies: 7
Views: 300

Re: wife's triple...difference in mid chain ring distance....

Ideally, the middle ring and middle of the cassette align, maybe not too much difference in practice if nothing fouls. I did this with my Spa triple with a 9 speed cassette. I had to get a shorter bottom bracket than recommended and even had to remove a tiny bit of the centre of the driveside chain...
by Tompsk
3 Jan 2018, 6:36pm
Forum: Bikes & Bits – Technical section
Topic: Poor frame design?
Replies: 47
Views: 2273

Re: Poor frame design?

Sounds poor to me. At the 'other end' how is the toe overlap with the front wheel? From memory this was seen as a safety issue but AFAIK the construction rules allow designers to get around this by assuming everone has a tiny shoe size, perhaps they do this at the back too? Not sure if construction ...
by Tompsk
27 Dec 2017, 6:50pm
Forum: Bikes & Bits – Technical section
Topic: It Doesn't matters, It's not the bike/kit you have...
Replies: 27
Views: 1547

Re: It Doesn't matters, It's not the bike/kit you have...

Oh no! It's turned into another gear & chain selection thread!
by Tompsk
27 Dec 2017, 11:28am
Forum: Bikes & Bits – Technical section
Topic: It Doesn't matters, It's not the bike/kit you have...
Replies: 27
Views: 1547

Re: It Doesn't matters, It's not the bike/kit you have...

I'm curious as to whether this is a 7 speed spaced 7 speed or 11speed spaced 7 speed!? From what I've read it's 7 cogs with 11 speed spacing so you can still use your nice new 11 speed shifters. They can only eat so many of their own words in one go. Give it time and they will bring out a high stre...
by Tompsk
26 Dec 2017, 10:34pm
Forum: Bikes & Bits – Technical section
Topic: It Doesn't matters, It's not the bike/kit you have...
Replies: 27
Views: 1547

Re: It Doesn't matters, It's not the bike/kit you have...

Agree with your post but would add reducing tranmission losses by using a bit of lube and replace drive train components when worn. This isn't rocket science and wont keep the marketing people in employment so they come up with all sorts of reasons for you to spend your money. The latest I saw (I je...
by Tompsk
16 Dec 2017, 3:35pm
Forum: Bikes & Bits – Technical section
Topic: Excess price rise(s)?
Replies: 24
Views: 1668

Excess price rise(s)?

Been musing about buying the following tyres. I'd swear these were £8 a week or so ago (not on a special offer), now listed at £12 each - I can't think what justifies a +50% price rise... http://www.wiggle.co.uk/lifeline-essential-road-tyre/ http://www.wiggle.co.uk/lifeline-essential-commuter-road-t...
by Tompsk
6 Dec 2017, 9:01pm
Forum: Bikes & Bits – Technical section
Topic: Seatpost: how loose is acceptable? - Solved
Replies: 8
Views: 894

Re: Seatpost: how loose is acceptable? - Solved

I've now solved the problem (spending an unnecessary extra £20 on my "buy a frame and build a bike from the spares box" project) by buying a 25mm post and a 25 to 27.4mm shim, both from SJS. The shim is sprung wide and so a very tight fit in the tube - not sure if that is going to come out...