damerell: (cycling)
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posted by [personal profile] damerell at 04:32pm on 25/09/2007


This Audax was the 50km ride in Liz Creese's Autumn Assortment; I'd gone for the 50 because I'd hoped to have a fresh new fixie to test run, but the parts only came on the Friday. However, since I'd left my normal tourer in Cambridge, this meant the only bike I had was the Brompton, so being on the 50 was no bad thing.

Ruislip's a little way from Hampton - I cut the journey up a little short (and eliminated some really huge roads) by riding up to Greenford and taking the Tube to Ruislip Gardens (I'll bet not many people have managed to take the Tube to the start of an Audax), but I'd still clocked about 11 miles up to the start, which meant the usual early start to assemble two piles of food and eat one.

There were only seven of us on the 50, including a worried-looking auk-girlfriend-on-first-Audax (whose worries were not justified, she had no real trouble keeping up), a small boy, and the chap running the first control (who I gather would have zoomed ahead if anyone else had felt like a big hero). One of the other riders was on a shiny new race bike with a kickstand fitted, which struck me as slightly subversive - unfortunately he also had two big chainrings and a tight back block, which meant he ended up walking a bit.

The ride was generally north-easterly out towards Chipperfield. It's not a desperately lumpy route but there are some steep sections - my B has standard 3-speed gearing, which means below about 8mph I was standing on the pedals and honking, but none of the hills were too long to just bull up, and I'm glad to say I never had to walk. The converse of that is that I've never been at 36mph on a Brompton before - with worries about heating the tiny tyres up, I was sitting bolt upright being an airbrake more than once.

First control was in a garden centre; stopped for tea and cakes which took about half an hour. Not really necessary, but we had plenty of time in the bag.

Second control was an info at the top of a hill near Chalfont St Giles. We stopped to wait for the walkers, a short rest, and a newton of figgs - irritatingly, it was at the end of the five-minute rest when I noticed that two-big-chainrings' front tyre didn't have the bead seated and was on the verge of herniating out and bursting. He and the controller set to to fix it - in the course of that they noticed a loose brake block - and by the end of all that, we'd bled half an hour. However, the controller said he'd explain to the organiser and we need not fret about the cutoff time.

After that we pressed on, getting a bit more strung out - about 2 miles from the finish, I figured I could just squeeze in before the 1405 cutoff, and I'd prefer not to chance it. Off I went - pant gasp - and just made it, only to find the cutoff was 1415 and everyone else would just make it anyway.

More tea and cakes and then home - feeling lazy, so Tube to North Acton, cycle to Acton Town, Tube to Hounslow West, cycle home.

My hands were quite sore by the end - I wouldn't care to do twice the distance on flat bars - and my knees were quite sore when I got home (again), but that passed very quickly.
There are 7 comments on this entry. (Reply.)
pm215: (Default)
posted by [personal profile] pm215 at 06:59pm on 25/09/2007
So how much time do they give you to do the 50km?
 
posted by [identity profile] damerell.livejournal.com at 12:36am on 26/09/2007
Typically the minimum speed is 12.5 km/h, although the minimum here was 12 km/h over 51 km, allowing 4h 15m after a 1000 start. This is pretty slow, but without the hour's farting around we'd have been over the Brevet Randonneur 15 km/h minimum.
 
posted by [identity profile] rax.livejournal.com at 07:06pm on 25/09/2007
I am _certain_ my folding bike would fall apart at 36mph. I might have to make the next one Brompton; I had a coworker who very much liked his as well.

...and if you were hitting 36mph on a Brompton, you intended to take a fixie on this course? Are you mad, or just hardcore?
pm215: (Default)
posted by [personal profile] pm215 at 10:12pm on 25/09/2007
I've done nearly 40mph on my Raleigh Twenty and it didn't fall apart, fold up or fail to brake on demand :-)
 
posted by [identity profile] rax.livejournal.com at 10:28pm on 25/09/2007
Mine is an old Dahon. It's... rickety. I've managed to get the seat to stop falling down while I ride it! :)
 
posted by [identity profile] damerell.livejournal.com at 12:42am on 26/09/2007
The Brompton isn't really an alternative to the Dahon. As you know, folding bikes compromise a few factors - folded size, ease of fold, ride quality, cheapness and crapness of design. The B is quite small when folded, folds in 15 seconds (no, really) - it is only because it is very well designed that the ride quality is acceptable.

It's not the same job as "slow to fold, rides something like a non-folding bike".

England has a really unusual propensity to short sharp climbs compared to most places (Scotland is much more "normal" with long slow ascents) and that means short fast descents. I would expect to get to around 35mph at least once on any reasonable length country ride - if you ride fixed over here, you just have to be able to do 120rpm and brake a bit...
 
posted by [identity profile] damerell.livejournal.com at 12:43am on 26/09/2007
British bicycles of that vintage have a number of oddities but a tendency to disintegrate unexpectedly isn't really one of them. :-)

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