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Friday, March 12, 2010

Caterpillar into butterfly: proving metamorphosis works to a 3 year-old (almost 4!)

We've read about it, and like most of us he knows the theory. But is it for real? Like tadpoles growing into frogs, caterpillars turn into butterflies. Yeah, right. As if. So we carefully captured a fat stripey caterpillar and temporarily relocated him/her/it from a ficus in a pot to a plastic bug holder. Within 2 days we had a lumpy blobby chrysalis that dried overnight to a dramatic gold sheen. And a week or so later emerged a Common Crow butterfly (black with white spots). Theory turned into practice, we let the butterfly flutter by, off to sip nectar somewhere nice....

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Friday, March 05, 2010

The 20 year old Look KG76 wore out so I got another Felt. (Warning: bicycle pics attached.)

Monday, February 01, 2010

Some pics of local central coast cockatoos including full-flap landings at my seed bowl (OK, their seed bowl)

Bike stuff. I swear this shifter cable was perfectly fine a week, or maybe a month, ago. Or was it?

Clearly it wasn't. Despite knowing that I should clean, inspect, lube and replace cables (having broken plenty of gear cables in my time, and clutch and accelerator cables in cars, too) somehow this one passed me by. In hindsight I knew I had a problem. I saw the cable wearing against the head tube and I should have wrapped it with some tape. I also noticed the lack of responsiveness in shifting but I assumed it was related to cable tension and friction, and having lubed it where I thought it "needed it", I left it at that. Indeed, performance had improved markedly, so I thought I had nailed it. Then yesterday it started to skip gears, or shift belatedly under power. At the end of the ride it refused to go into the smallest gear. No big deal, I thought. I'll adjust it later. But later didn't come.

Instead I went for another training ride today and forgot about yesterday's problems. Until I tried to grab a bigger-diametre rear cog. No dice. It would go up but not down the range. (Which is to say I could grind out a bigger, harder gear but I wasn't going to get a smaller, easier ratio if I needed it. Considering I live on a hill this was no small thing.) That's when I started playing with the cables, looking for a kink - whoa. That's not a kink. That's a snap. You'd think after almost 30 years of bike riding I'd be on top of this stuff... but complacency never lets up, does it?

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Monday, January 18, 2010

Last Friday's crit - the iBike power-meter view of 10 laps in D-grade

I had a break. Well several breaks really, and a fall (with no breaks, just pain!). But I'm back on the bike and racing - and training - with the intention of staying race-fit until the "road season" (which is Aussie-speak for our winter as we do track and crits in summer). We shall see. Although I raced at least twice (maybe 3 times) back in October/November last year I have taken January 2010 as the "real" starting point. I am training, rather than just riding, and trying to have an influence on the race.

So here's an iBike power-meter view of what was race 2 for me in 2010. I was carrying a hamstring injury (of all things) and wasn't sure how hard I could push it - I could feel a twinge of pain when I rose from the saddle or pulled up with the right leg - so I "sat-in" as any old ex-Randwick-Botany racer would do and just followed wheels. For the 2nd race in a row - hey this is only D-grade at CCCC's Lucca Rd circuit, don't get excited - I got 3rd place. But I contested the sprint and didn't ever feel like getting dropped. Average speed was just under 33kmh for the 30mins + 1 lap. Nornalised power (my own formula with coasting "zeroes" removed and weighting given to "power-on" rather than "slacking off") was just under 200W (seeing as how I have been cracking 200W training it shows that I was taking it easy, but the iBike is also not that great at measuring power whilst sucking wheels, either). You can see that the sprint (end of the bike race, folks) was the only time I exceeded 50kmh but we cracked 40 every lap. That's on a downhill but there was a headwind!!) There's a small but painful "rise" that starts at a left-hand turn (so only the brave really take a run-up at it) every lap and the wattage hit 450-600 every time up that incline as someone always "had a go" to dislodge a few non-trainers. There's also a smaller power peak each lap just after the "big" hill and past the start-finish straight where we go left again and kick up a smaller but noticeable gradient. The speed rises once more as we hit that gentle climb - must be enthusiasm or the excitement of it all. If you took this seriously you could train to these conditions and increase output in key situations. You could replicate the course or sections thereof and impose repeated loads. Or you could use this race data to optimise race speed whilst keeping the lid on over-enthusiasm, power-wise. Hang back a bit, save the powder as it were. Now you could do this without a power meter - heck, I raced for more than 20 years without one - but it's so nice to get pictures, isn't it?

Onward, ever onward. Even at 52.

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