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Re: Best Farcility of the Year?? £210,000 Wasted?? Chicheste

CTC Forum - On the road - 2 hours 23 min ago
661-Pete wrote:I cannot figure out how any oversized roundabout aka 'gyratory', constructed usually by imposing one-way flow on existing streets, has actually improved the traffic flow.
I have no solid information, but I can imagine how they might.

When a conventional (Tee or crossroads) junction carries one road with most traffic, and one or more side roads with give-way, a roundabout gives people coming out of the side-roads a chance to get out. The larger the roundabout, the more opportunity to tune the road layout to give "straight-through" ease to some directions, and sharper curves to slow down other directions. Through this, all motorists can use the junction at the same speed, which eases merging and queueing, and maximises throughput (motorists per hour).

And the larger the roundabout is, the greater the speed at which it can be driven across, which motorists love.

But a junction that also carries cyclists should (IMHO must) meet other criteria. I want all vehicles to travel at the same speed, say 10 mph. This means slowing motorists down, heavily. It needn't mean reducing the throughput (motorists per hour) but will of course increase the time for the motorists' journeys.


Encouraging cyclists to ride on the left naturally increases the risk of left-hooks. Reducing the speed of motorists to that of cyclists, and having all road-users in the same lanes, is a better solution. Best of all, in my view, is to re-engineer so cyclists have priority. If that means bollards all over the town, so be it.

Re: Touring bike choice for people with long legs

CTC Forum - Touring & Expedition - 5 hours 33 min ago
22camels wrote:
Edit: I'm now even more puzzled why you say drops exacerbate the problem as it seems to me I can get the same reach and and bar height with drops as I can with straights (possibly with different frame sizes), provided I don't use the drop position on the drops. Yet I'm also a bit puzzled about Thorn having separate sizing for drops and straights frames, as it seems they're assuming a lot about how most people will use drops and straights eg if I spent most of my drop time on the tops and most of my straights time on the ergon gp5 bar ends, I would need a shorter top tube on the latter, contrary to the thorn philosophy..


The idea is that you ride with your hands on the brake hoods (comfy, good position, quick brake response). So good in fact that tandems sometimes have false stoker brake hoods. That puts you about 12 cm further forward than you would be with straights at the same level. But yes, if you go a bit further forward with bar ends on straights but ride on the shoulders of the drops it would be reversed. Bar ends give you an extra bit of height though.

Re: Geraint Thomas E3 Harelbeke win

CTC Forum - Racing - 29 March 2015 - 11:35pm
cycleruk wrote:Gent-Wevelgem. What a race.
Geraint showed his tenacity catching up the group after being blown into the ditch.
Not only that but chasing down every break for a deserved podium finish.

+1
I watched the whole coverage on Eurosport.I always enjoy the spring classics(more than the TdeF TBH) but today's race was a classic among classics!
G just gets better,I was amazed how quick he got back to the lead group after being literally blown off the road!
Thogh IMHO Paolini deserved the win,doing what G did in the E3.

Great TV!!!

Re: Reducing pannier weight

CTC Forum - Touring & Expedition - 29 March 2015 - 11:06pm
I've yet to put my theory into practice, but I've a spare pair of walking shoes in the pannier so that when I reach the campsite after a wet rainy ride, I have something dry to put on while the spd shoes dry out (hopefully).

Re: Is insurance for a tour in Europe a worthwhile purchase?

CTC Forum - Touring & Expedition - 29 March 2015 - 11:03pm
£49 sounds a lot

My standard travel insurance covers me for cycling provided that I'm not racing...that's free from my bank

My house insurance covers my bike when I'm on holiday....cover up to £500 is included

My 4 expensive bikes are insured on the same policy for a few pound per month with ensure

I had my wallet stolen in Nice and got all my money and expenses back in 1 phone call

I had a bike accident and had a new for old replacement in a couple of weeks worth £2500

Worth it to me

Re: Touring frame differences

CTC Forum - Touring & Expedition - 29 March 2015 - 10:56pm
Really appreciate your input though these are two completely separate threads, maybe I should have delayed one of them so as not to cause confusion . Re the test rides, no I've so far found it impossible to set up my desired position on any test ride bikes, because the bars always end up at least a couple of inches too low due to my high saddle height.

Re: Best Farcility of the Year?? £210,000 Wasted?? Chicheste

CTC Forum - On the road - 29 March 2015 - 10:54pm
I cannot figure out how any oversized roundabout aka 'gyratory', constructed usually by imposing one-way flow on existing streets, has actually improved the traffic flow. Can anyone convince us that, for instance, the notorious Vogue Gyratory in Brighton has done just that? Or any other such construct, anywhere in the country?

If we're talking roundabouts, I am very much more comfortable with small roundabouts where one can see all the vehicles on the roundabout at any one time. That makes it far easier for the cyclist to judge whether it's OK to venture onto the roundabout itself, inserting him/herself into the normal traffic flow round it. Certainly I don't find any problems with negotiating such a roundabout.

Of course it is possible for the highwaymen to screw-up over a perfectly normal roundabout, for example a newish one in Haywards Heath which I've posted about before. But there's little increased risk if you ignore the 'infarcestructure' on the pavements and traverse the roundabout normally. The main danger is that hostile motorists, seeing you not on the infarcestructure, may execute a 'punishment pass'. Which on a roundabout would be extremely dangerous. I just hope every motorist I encounter has more sense.

I'm not familiar with this part of Chichester, but it seems to me that the problem lies in it being a gyratory in the first place. The problem is that all vehicles circulating on a gyratory are going to turn left at some point. That's an awful lot of left-turns, hence an awful lot of chances of a left-hook. The 'give-way' markings, I notice, favour users of the main carriageway against cyclists on the cycle lane, and I can understand why. Understand, but not condone.

Re: Round the world on a unicycle

CTC Forum - Touring & Expedition - 29 March 2015 - 10:54pm
DarkNewt wrote:can you go off road? (there will be someone somewhere who has ridden up the Eiger on one)
Well a couple rode down a 3000+m mountain in the Dolomites at least


& the same guy has ridden down the 5671m high Damavand in Iran!


Re: so when do the shorts come out?

CTC Forum - On the road - 29 March 2015 - 10:44pm
Went out in shorts this arvo & despite the wind it felt quite mild, had long sleeve base layer, windproof top and a gilet on though, I must be hardening up..lol

Side winds off the open fields though..very very strong

Re: maps for the west of USA

CTC Forum - Touring & Expedition - 29 March 2015 - 10:41pm
I'm planning to ride the Northern Tier and would like the ACA, Gps data, but it's going to cost a fortune to get it because if you live outside America, you pay a premium for the membership. There is lots of stuff on the web and thats what I'll use, where do you plan to ride because I'll be riding the Great Basin of Utah via the backroads at some stage but will use the Topo scans on RideWithGps and topo maps in my primary Nav app, http://gaiagps.appspot.com/ I'm in the planning stage now.

Is insurance for a tour in Europe a worthwhile purchase?

CTC Forum - Touring & Expedition - 29 March 2015 - 10:39pm
Hi tourers

The above might sound like a daft question but I'd appreciate it if some people could share their experiences around whether it is a worthy purchase or not.

I work in the insurance industry and place importance on being adequately covered but I'm also aware that a policy is only as good as the claims service provided should things go wrong.

£49 for a 3 week tour of Holland and Germany doesn't sound like much but after looking at the small print I didn't get far before beginning to consider just going with a European Health Insurance Card.

Take the loss of bike for example. My bike is 13 years old and cost £600 new. With the 10% reduction per year for the age of the bike I'd get nothing.

Loss of cash? Why not just take 100 euros or so and a prepaid debit card. If you lose the cash, take the hit and get some more out (by contacting the card issuer if your card is lost too).

Repatriation of the bike? If it's beyond repair any undamaged accessories will be stripped and it'll be scrapped.

I'm struggling here folks to justify the expense.

Re: Touring bike choice for people with long legs

CTC Forum - Touring & Expedition - 29 March 2015 - 10:34pm
thanks horizon, you make some really interesting points, like number (2) and (4) - don't very short stems (under 70mm) give funny steering? I'm actually also undecided about drops vs straights, having being used to drops for a while though I rode straights once, and I'm really tempted to go for straights again as they have way more convenient controls, more accurate steering due to width, multiple positions with bar ends and more options if I don't like them (-> other types of bar ends or the multiple configs of trekking bars) whereas with drop levers you're stuck with drops or bullhorn it appears to me, that's before taking into account reach adjustments. Anyway I'm also most likely going for a Thorn Sherpa, probably pretty soon, and trying to decide my size - I've been there and they told me if I want drops I'm most likely a 600S (based on my standover... I thought the ETT was the most important dimension) but would also fit a 565S, and with straights I'm a 600L or a 565L. My current thinking is the 565L with straights which would give me options if I didn't get on with the straights to change to drops or trekking (though the reach might be 2-3cm too long..). I'm interested why you suggest going for a drop bar spec and changing to straights? It appears to me that the 565S would give me too short a reach for straights.. But perhaps short reach is what I want.

Edit: I'm now even more puzzled why you say drops exacerbate the problem as it seems to me I can get the same reach and and bar height with drops as I can with straights (possibly with different frame sizes), provided I don't use the drop position on the drops. Yet I'm also a bit puzzled about Thorn having separate sizing for drops and straights frames, as it seems they're assuming a lot about how most people will use drops and straights eg if I spent most of my drop time on the tops and most of my straights time on the ergon gp5 bar ends, I would need a shorter top tube on the latter, contrary to the thorn philosophy..

I know custom frames are the ideal solution but they're outside my budget.

I also suspect posture, strength and flexibility are crucial but trying to do the bike geometry first..

(Sorry for double post).

Re: Would this bike be a suitable entry level tourer

CTC Forum - Touring & Expedition - 29 March 2015 - 10:18pm
Someone with more expertise than me will be along soon, but personally i would avoid anything with suspension.

Actually i would avoid anything with suspension for use as a regular city bike.

I speak/write as someone who has two bikes a amongst several with suspension. Although both are fun bikes, since neither are used for flying down mountain tracks the suspension is a needless expense and complication.

Pneumatics are your friend.

Re: Touring frame differences

CTC Forum - Touring & Expedition - 29 March 2015 - 10:18pm
22camels wrote:"Ditch the spreadsheet, get out and ride some test bikes." I've test ridden a few but none have yet felt like my destiny, maybe cos it just takes time to get used to a new bike. It's hard to tell, there are too many variables at play to compare test rides side by side, and in my opinion you need at least a few hours, better a day, and preferably two days, to get a good idea of what the bike is about, which is hard to arrange and time consuming.

I'm not just being argumentative for the sake of it, there isn't another option. The numbers don't tell you how the bikes ride, however hard you look, however much experience you have.
Somewhere on these 2 threads you mention "high stack to reach ratio". If a bike has a high stack, it necessarily has a short reach, because reach is measured vertically above the BB, but in the plane of the head tube.
effective top tube varies much less with height, as seat and head tubes are nearly parallel.....but top tube length needs to be considered in parallel with seat tube angle, otherwise its near meaningless.
Its pretty quick to set up a bike to your accustomed position, if that's what you want. Take your saddle, set it at the right height above and horizontal distance behind the BB, use a plumb line for the latter. get the shop to swap the stem for the right reach and height, and you have replicated your position for a test ride.
BTW, I don't think you have long legs either, I'm 5' 10", crotch to floor about 33"

Re: Best Farcility of the Year?? £210,000 Wasted?? Chicheste

CTC Forum - On the road - 29 March 2015 - 9:43pm
It doesn't seem to have occurred to them that the injury rate for cyclists is due to a crap design.

Or that signs don't do anything to prevent the conflicts.

Re: Best Farcility of the Year?? £210,000 Wasted?? Chicheste

CTC Forum - On the road - 29 March 2015 - 9:40pm
Oh dear oh dear. Techno-gadgetry to inform drivers that there are cyclists about. And when the techno-gadgetry fails, the driver has the perfect excuse for driving into a cyclist. This is an amazingly stupid idea.

From the video, it seems a very car-friendly gyratory. Very large radii for the motorists enable them to speed around. Cyclists are expected to always give way to the important people, who are in cars.

The order could be inverted. Most space would be given over to cyclists who always got a clear run, with motorists always having to give way to them. The roadworks could leave the junction open for cyclists, and motorists given helpful information on finding alternative routes.

Re: Touring frame differences

CTC Forum - Touring & Expedition - 29 March 2015 - 9:29pm
Not everything is what it seems.
Why the long trail on bike "X"? well, if you want to use an existing manufactured fork, it will usually have 45mm offset. With straight bars, you can have an acceptable reach and toe clearance. Fit drop bars, and you can get some rather stark choices.....what do you want, of a choice between too long reach, or toe overlap?....or shall we partner the fork with a shallow head angle that will give excess trail, but a bearable reach with toe clearance?
The numbers hide more than they reveal.....you have to ride the things.
Elsewhere, you tell us you are tall. Most manufacturers use the same size tubes for the big frames as for the small frames, so the big frames will be more flexible than the small (the tubes are longer) when really the big frames should be stiffer, because the rider is likely to be heavier, and his weight will certainly be higher up, and his luggage may well be further back (although maybe not if the chainstays are the same length on all sizes)
I'm 5' 10" and weigh 11 stone....the current fashion for oversize steel tubes means that fashionable bikes are all over-engineered for me, and stiffer than comfortable.
If you are 6' 4", twenty stone and carry survival gear, you should look for a stiff bike.
Ditch the spreadsheet, get out and ride some test bikes.

Re: Geraint Thomas E3 Harelbeke win

CTC Forum - Racing - 29 March 2015 - 9:24pm
Gent-Wevelgem. What a race.
Geraint showed his tenacity catching up the group after being blown into the ditch.
Not only that but chasing down every break for a deserved podium finish.
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