I’m in the  process of replacing worn out bits of the drivetrain on the (now almost 3  year old)  Fuego, and have been pondering whether I can improve the  chainline at  all (which is currently very tube-y).  The current plan is  to go for the  double terracyle idler under the seat, and a single one  on the boom to  hoik the return line over the front wheel.  However,  being somewhat  tightfisted, I’m wondering what the implications of just  running the  return straight to crankset alongside the front wheel is,  cutting out an  idler for the sake of adding in a short length tube.   All the “fast  people”TM do this, but then they also probably have fancy wonky forks and don’t have to deal with buses and sharp left-handers.There’s   not a huge amount I can find on the web on chainline for commuting   recumbents, and even fewer pictures of what works and what doesn’t.  The  current plan is to get hold of a load of side-on pictures of  bikes  (hopeful posts are currently on YACF and citycyclingedinburgh),  highlight the chainline, idlers, tubing and any other fancy bits  with  bright colours, include them with the rider’s comments on how it  works,  and then stick them all together in a blog post as a reference  for  anyone else who’d be interested.  If anyone has come here without  passing via either of these fora it’d be great if you could donate a  side-on picture of your beloved steed along with any  pertinent comments  (model of recumbent, is the chainline standard or  have you tweaked it,  does it work well, etc), I’ll then colour it in and  post it (together  with credit and references etc), and then maybe we  can all steal each  others ideas!  The picture at the top shows what I’m planning.  Something like green for drive side and blue for return.  Thin and light is bare chain, thick and dark is tube.  Idlers are round.  Obviously.  And similar pictures for a whole load of different recumbents.  Anyway, watch this space.  Recumbent Chainline Gallery coming to a site near you!

I’m in the process of replacing worn out bits of the drivetrain on the (now almost 3 year old) Fuego, and have been pondering whether I can improve the chainline at all (which is currently very tube-y).  The current plan is to go for the double terracyle idler under the seat, and a single one on the boom to hoik the return line over the front wheel.  However, being somewhat tightfisted, I’m wondering what the implications of just running the return straight to crankset alongside the front wheel is, cutting out an idler for the sake of adding in a short length tube.  All the “fast people”TM do this, but then they also probably have fancy wonky forks and don’t have to deal with buses and sharp left-handers.

There’s not a huge amount I can find on the web on chainline for commuting recumbents, and even fewer pictures of what works and what doesn’t.  The current plan is to get hold of a load of side-on pictures of bikes (hopeful posts are currently on YACF and citycyclingedinburgh), highlight the chainline, idlers, tubing and any other fancy bits with bright colours, include them with the rider’s comments on how it works, and then stick them all together in a blog post as a reference for anyone else who’d be interested.  If anyone has come here without passing via either of these fora it’d be great if you could donate a side-on picture of your beloved steed along with any pertinent comments (model of recumbent, is the chainline standard or have you tweaked it, does it work well, etc), I’ll then colour it in and post it (together with credit and references etc), and then maybe we can all steal each others ideas!

The picture at the top shows what I’m planning. Something like green for drive side and blue for return. Thin and light is bare chain, thick and dark is tube. Idlers are round. Obviously. And similar pictures for a whole load of different recumbents.  Anyway, watch this space. Recumbent Chainline Gallery coming to a site near you!

Blackout SOPA

To add weight behind the shoal of minor websites shutting down tomorrow in protest at SOPA (wikipedia and reddit, to name two) Darkerside will also be going dark. Or at least, not updating.

Given the ability of the American legal folk to create vague legislation and then hand out astronomical penalties for breaching the footnote on page 47 (ITAR springs to mind), freedom of speech on the web strikes me as something worth standing up for.

In addition, with wikipedia down I’d have nothing intelligent to say anyway.

In another lucky break with available user names, I’ve broken into twitter. Part of the logic was it’s much easier to update twitter via text, and 3G signal across much of the west coast is patchy at best. It also seems a better platform for random thoughts, grumblings and photos and lets me keep this blog for more in-depth stuff that might be vaguely interesting to read…

Anyway. It’s there if you fancy a nosey. Along with the fetching new black/orange/white colour scheme. Can you tell all my education was science side? Thought so.

Although I could see the bin possibly prompting competitions on the theme of accuracy/passing speed…

You are not stuck in traffic.  You are traffic

Finally found what I hope is the original source of this image - Lisbon Cycle Chic*

I’m going to neatly use this image to illustrate a point made by ExcitableBoy on a recent CityCyclingEdinburgh thread, which I hadn’t really thought about before.  Namely:

Cyclists do not delay motor vehicles.  Motor vehicles delay cyclists.

Neat, eh?  Let me expand a bit.  In my mind, a delay has occurred if you get to your destination later than you would have otherwise done.  So, lets take a road-hogging, slow, always-in-the-way cyclist called Bob, and (just to keep any public key fanatics happy) a speedy Audi driver called Alice.  Who’s on the way to a meeting. 

Alice comes up behind Bob on a blind right hand bend.  Because Alice is a better than average driver, she decides against chancing it and hooning round the bend on the opposite side of the road and instead sits behind Bob all the way round the bend.  Call it 5mph (Bob’s having a bit of a lazy day, truth be told.  He might be whistling).  15 seconds (30ish metres) later the road straightens out, Alice checks the coast is clear, moves smoothly out, passes Bob and heads off at speed.  Now, has Bob delayed Alice, maybe putting her all-important meeting at risk?  Only if Alice is able to maintain the maximum safe road speed all the way to her destination, without any other events causing her to slow down for more than 15 seconds**.  Hits a traffic light?  Catches up with a car in front?  Has to wait to turn right into the company car park?  The cyclist delay is wiped out.  Bob has had no effect on the time taken for Alice to get to her meeting.

Switch it around.  Cyclists rarely catch things powered by burning oil in freely flowing traffic, after all, all we have is Weetabix and the odd banana.  We also generally travel at our maximum possible speed (rather than an artificially limited top speed limit), so have much less capacity for making up time lost by delays.  Almost every second lost due to the number of vehicles on the road is added on to our total journey time.

So.  Drivers.  Next time you’re part of a traffic jam and see a cyclist slowly filter past, or stuck behind you sucking in your exhaust fumes, be embarrassed in the knowledge that your choice to pick a 2 tonne metal box to get to the shops is making that cyclist late for their tea.  And when you politely wait for chance to safely pass another cyclist, be safe in the knowledge that you’ll still get to that meeting at the same time.

* As an aside, whilst trawling their site to confirm this I also came across a surreal video of naked women riding multicoloured fixies.  From this I draw the conclusion that it’s warmer in Lisbon than Glasgow.  I digress

** OK, well actually this is only really accurate if you also factor in the speed difference.  Assume Alice was doing 30mph and lets assume this is a really upmarket Audi with instant acceleration.  Lets also switch to metric (the cyclist’s favourite ego-flattering trick).  In 15 seconds she should have gone 166m at 40kph, but instead only went 33m (15 secs at 8kph).  She’d lose the same 133m progress with a 12 second stop at traffic lights.

Bike shed no match for wind in “Scotland occasionally breezy” shocker.

Bike shed no match for wind in “Scotland occasionally breezy” shocker.

Drying out after its winter bath…

Drying out after its winter bath…

MacGyver’s Shoes

As subtly hinted at by this morning’s tweet, I have been road testing a budget option of winter-proofing my SPD shoes.

The shoes in all their glory

Shown half-way through the delicate procedure, you may notice one of the bomb-proof Shimano shoes has been subtly modified to block off the toe ventilation.  The end result should hopefully be toasty piggies, whatever the weather.

Does this work?

No.  No it doesn’t.  Snug feet are achieved, even in the stiff breeze and sleet we had this morning.  However, the gaffer cap is already separating off from the toe, so unless you’re happy to recreate this every night, it might be time to pony up for some overshoes.

Anyway, I’ve decided that unless I am physically unable to open the front door due to snow fall tomorrow, the recumbent is getting an outing.  Upright bikes in a headwind are such hard work.  This means that I’ll be leading with a good half inch of rubber sole, and warm feet are a happy bonus.

I find this kind of thing oddly fascinating. Look at them go! Ahem…

Anyway, first snow of the winter, so still on the spikey-tyred upright. Mainly slush, so only real issue is hidden potholes. Dug the helmet out of the cupboard for a bit of extra warmth and muppetry insurance.

Oscar mans the breach

Excitingly (and somewhat mysteriously) the recumbent front disc brake managed to eat its own pads on the way home last night.  I know, I didn’t know that could happen either.  As a result, you may have heard me limp past last night making a noise like a tin can in a washing machine.  It appears that part of the spring which keeps the two pads apart somehow got sucked between the caliper and the rotor, and punched a hole straight through the pad.  I was quite impressed at the damage…

One knackered disc

Staggeringly the rotor has survived unscathed. However, whilst I wait for Wiggle to shunt me a new set of pads, the upright was pressed into service as a commuter.

Meet Oscar.

Oscar the cycling tank

Oscar was my daily commuter until I went all recumbent-y. It’s a Kona Sutra, in what I’m sure Kona would rather call metallic chocolate but is in fact brown and glittery. It’s a spectacular bike, has no problem with the weekly shop/recycling load, was the only thing moving (ok, moving under vague control) in the Glasgow Day Of Snow And Ice last year and weighs the same as a small moon. Sadly in full winter get-up, with spikey tyres, DIY fenders, kickstands, a stupid amount of racks and me wheezing on top of it, it did get slightly left behind in the train of bikes powering into the base today.

Still, it was fun being able to see over cars for a change!