Ok, I'm a big bloke (130kg+, but not all fat) and got back into cycling a
few months ago to help decrease the girth. With a 20k ride every morning and
a couple of hours in the gym at night so far I'm down about 15kg so all is
good. The Giant Sedona Comfort Bike was a great choice and is still up to
the job (I've only broken one spoke so far and the rear axle is only a
little bit bent.) but I was running out of legs all of the time. eg At
130rpm in top cog on a decent downhill I'm only just cracking 60kmh. So I'm
asking the bloke at the LBS about maybe fitting taller gears so I've got a
few more to play with, and he takes one look at my legs and tells me I'm not
pedalling fast enough. ;-)
Ok, so figuring that most of the techno/dance coming out of my MP3 player
was generally around ~140bpm, if I'm keeping time to the beat I was probably
pedalling in the 65-75rpm range. Fitted a cadence meter and discovered I was
pretty much on the money. Now, to get it up around the recommended 80-90rpm
I was going to need some practice, so I get some MTB shoes and clips and
start getting used to dropping down a cog or three below where I'd normally
be.
Straight away I discover that even though my average speed & time for the
route is about the same as it was, I'm seriously running out of puff and
getting home fairly messed up. But after about 3 weeks of this, my times are
starting to improve and my weight loss rate has also increased so I'm
definitely sold on the idea. However, today I've got a shocking cold and
feeling lousy but I decide to go out anyway and just take it easy. Low and
behold I get home most unexpectedly with a new PB time and speed but my
average cadence is only around 70 rpm because I was deliberately plodding
along without making any effort at all to spin. But I didn't feel like I
wasn't powering into it either and could have kept going at that pace
indefinitely so I didn't suspect for a moment that I was going any faster.
Why is it so?
--
www.ozcableguy.com
www.oztechnologies.com