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Re: New Bike

CTC Forum - On the road - 9 August 2015 - 9:59pm
blinkered wrote: ....This needs more thought.

it could keep you going for ages....

cheers

Re: New Bike

CTC Forum - On the road - 9 August 2015 - 9:53pm
661-Pete wrote: This discussion on sizing inspired me to do a quick check, seeing as it's some years since I bought myself a new bike and I'd forgotten what 'my' size was.

Well, I'm 1.73m tall (about 5'8") and my steel road bike, with drop bars and horizontal top tube, measures 57cm - at least, that's the measurement from centre of B/B spindle to top of seat tube (point where seat post emerges). Is that the correct way to state a frame size, these days? And what does one do with a frame with sloping top tube (as most road frames are these days)?

But my preferred frame size seems unduly large for my height, here, as compared with the choices of others on this thread. Am I doing something wrong?

My understanding is that (unless otherwise stated) a (say) 23" frame is implicitly a Centre to Top (CT) measurement whereas a (say) 57cm frame would be a Centre to Centre (CC) measurement. Which probably means your frame is 55.7cm or 22.5", or 57cm CT (or even 22" CC, but you don't often see that one).

The sloping top tube (STT) complicates things; hence the frame geometry may contain such items as 'VTT' (virtual top tube) and virtual/equivalent seat tube measurements, which are meant to guide you to a comparison with a frame with a horizontal top tube.

Frame sizes in the 22" to 23" range often vary more in top tube length between manufacturers than they do between these two sizes in any one brochure, and furthermore the amount of exposed seat pin (as well as the sloping top tube angle) is subject to the vagaries of fashion, just like ladies' hemlines. So I wouldn't get over-exercised about the exact frame size. I ride bikes with horizontal top tubes (HTT) that vary between about 21-1/2" and 23" and they all fit me just fine, despite the fact that I'm a bit fussy about position. However if you want to fit a particular model of rack, a frame fit pump, more bottles, or get certain handlebar height, the frame size might be important in ways that are not obvious.

So interestingly, in that kind of size frame you can choose a HTT frame with a rather short head tube or a STT with a head tube maybe up to about twice as long. The long head tube either lets you build the frame in lighter tubing or it stiffens the front end of the frame (for the same tube gauges) but not the fork depending on how you look at it. A ballpark figure for a bike with a nice fork and rim brakes is that about 1/3rd of the spring in the front end might come from the frame (flex in the top tube and the down tube) and the rest from the fork. When you make the head tube longer the frame gets stiffer (in the vertical plane vs fork loadings, but not otherwise) however the steerer flexes a fair bit more, because it is longer. It isn't perfectly clear what the net effect might be but the frame will feel different, usually flexier over the bumps, whenever the head tube gets longer. I think that many bikes with 1-1/8" steerer tubes, and oversize top tubes etc need all the help they can get in terms of unladen flex/comfort, even if they do handle loads with more aplomb.

cheers

Re: New Bike

CTC Forum - On the road - 9 August 2015 - 9:50pm
BigFoz wrote:Do like that colour scheme. I've been playing ion the Mercian Bike Builder to configure my next bike (saving in progress), but hadn't tried that combination. Was looking at plum with cream highlights, but that looks at least as nice!

Take a look at grey and gold I think that has the potential to look really good.

Also in case it helps with your planning Mercian have a 10 month wait for frames at the moment.

Re: New Bike

CTC Forum - On the road - 9 August 2015 - 9:37pm
Brucey wrote:ah, but that is just the start! What colour are all the other bits going to be....?

cheers

OMG i'd barely considered that!

Thanks

I don't really know where to start. Wheels and groupset are the biggies I guess. Which I suppose I will match as closely as possible to the grey with silver / alu components. Match the bar tape to the blue detailing.

This needs more thought.

Re: Calais Battlefield Tour

CTC Forum - Touring & Expedition - 9 August 2015 - 9:24pm
Thanks Iain, sounds just what we are looking for
I will do a bit of research
Thanks again

Re: New Bike

CTC Forum - On the road - 9 August 2015 - 9:17pm
Brucey wrote:ah, but that is just the start! What colour are all the other bits going to be....?

cheers

Urban camo of course [emoji41]

Re: New Bike

CTC Forum - On the road - 9 August 2015 - 9:15pm
ah, but that is just the start! What colour are all the other bits going to be....?

cheers

Re: Doored cyclist almost run over - good driving?

CTC Forum - On the road - 9 August 2015 - 9:01pm
Mike Sales wrote:It seems to me that the first step in stopping incidents like this happening again is to work out why this one happened.

I think we have 3 options:

1) Try to get ever driver to look before opening their doors ( good luck with that, and I still wouldn't ride in the door zone)

2) Inform and convince every cyclist to not ride in the door zone, while making sure that drivers don't intimidate cyclists who aren't ride in the door zone ( again, good luck with that)

3) Stop building infrastructure that encourages or 'forces' cyclists to ride in the door zone; e.g. by having a fast moving, narrow road. Instead, build segregated and safe infrastructure.

Although the third one requires money and political will, it's the only option I see as actually being one that could generate results.

Re: Calais Battlefield Tour

CTC Forum - Touring & Expedition - 9 August 2015 - 8:58pm
Hi there

If you're going from Ypres to Dunkirk a slight detour to the south will take you throug hthe "Monts des Flandres" on the Belgian / French border - Kemmelberg, Mont Noir, Mont des Cats and through to Mont Cassel. I've been a couple of times, rode around the Ypres salient, where there's an excellent cycle path network and really enjoyed it, hope to go again next month. Some pave on the top section of Kemmelberg ( about 20% gradient) and up to Cassel from where you get a fantastic view on a clear day.
Not much more than 20 miles from Cassel to Dunkirk
Regards

Iain

Re: Doored cyclist almost run over - good driving?

CTC Forum - On the road - 9 August 2015 - 8:58pm
Mike Sales wrote:robing wrote:People seem obsessed with apportioning blame on this forum.

It seems to me that the first step in stopping incidents like this happening again is to work out why this one happened.

And you do that by analysing the causes. This is not the same as apportioning blame. Quite the reverse.

Re: Doored cyclist almost run over - good driving?

CTC Forum - On the road - 9 August 2015 - 8:53pm
robing wrote:People seem obsessed with apportioning blame on this forum.

It seems to me that the first step in stopping incidents like this happening again is to work out why this one happened.

Re: Pride comes before a fall

CTC Forum - On the road - 9 August 2015 - 8:44pm
Whatever the rights and wrongs of this video I find the statements made by the car driver alarming and actually indicate his attitude towards non motorists.
"How f$$$$ big is that bicycle?"

.......You're f$$$$ lucky I didn't hit you then!"

"Are you a f$$$$ taxi? No. Are you a car? No, but you're a f$$$$ little bicycle" - driver indicates a narrow width with his hands - "but you seem to want to be in the middle of the road so it's your problem if you get knocked off"

So basically he can drive into anyone who isn't in a vehicle!

It's reported "The video now has more than 3 million views on YouTube and after the incident, Thames Valley Police confirmed an investigation was carried out into the incident. A caution for a public order offence was handed to the driver on Saturday, August 1."

Unfortunately this driver is not alone in his attitude. I had a similar conversation, but not heated like this, with an (elderly) - like me - driver in Tunbridge Wells who had passed me very closer when I was standing with bike at the side of a road. He had exactly the same attitude; if you're in the road you can expect to hit. Amongst his other moans was cyclists hold up traffic on Major York's Road (if anyone knows it) and should be riding on the pavement. That road is narrowed by legally parked cars, but they weren't the problem according to him!

Re: Large Volume 700c slick tyre

CTC Forum - Touring & Expedition - 9 August 2015 - 8:40pm
Hi,
I taken to the woods the moors and green laning many times and on 37's which actually are only a real 32

You say slick but how slick and what will it shave of time wise

I would of thought that your MTB background would draw you there more often, so I would fit semi off road tyres and be happy with the versatility..........

Re: Should I buy this bike? King of Mercia

CTC Forum - Touring & Expedition - 9 August 2015 - 8:39pm
also the bike has cantilever brakes

Re: Doored cyclist almost run over - good driving?

CTC Forum - On the road - 9 August 2015 - 8:39pm
robing wrote:People seem obsessed with apportioning blame on this forum. But it's no good lying in the hospital bed saying it was the parked car's fault, or relying on the quick reflexes of a taxi driver to avoid being run over. I repeat, if you ride so close to a line of parked cars, sooner or later you are going to get doored.

I don't ride in the door zone, but what you're conveniently forgetting are some of the less pleasant and dangerous side-effects of riding five feet beyond parked cars: tailgating, verbal abuse, close, punishment passes, getting clipped by a wing mirror, getting brake tested, getting hit from behind etc. I've been the victim of all of these different consequences when avoiding the door zone over the last 20 years.

Re: Large Volume 700c slick tyre

CTC Forum - Touring & Expedition - 9 August 2015 - 8:35pm
Schwarbe make it, I've just used the link.

Re: Large Volume 700c slick tyre

CTC Forum - Touring & Expedition - 9 August 2015 - 8:33pm
That's a good idea using his wheel. I think I have enough clearance Disc brakes and when I measured it was about 50mm wide and tall.
Who makes marathon supreme? schwarbe?

Re: Large Volume 700c slick tyre

CTC Forum - Touring & Expedition - 9 August 2015 - 8:26pm
Does your bike have sufficient clearance for the type of tyre you'd like to fit? Why not try your mate's wheel in your bike?

Re: Should I buy this bike? King of Mercia

CTC Forum - Touring & Expedition - 9 August 2015 - 8:24pm
thank you! I also have a carry freedom trailer so maybe it would bo ok. Good enough to get back in to it I guess, then I could sell it once I felt the need for something sturdier?

Will it handle tow path kind of stuff?
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