Rule #31 was conceived out of necessity, aesthetics and plain good taste. Seeing an oversized saddle bag hanging limply by velcro under a Flite, Arione or Regal just isn’t right. Frame pumps, while they undoubtedly do the finest job of inflating a tube, add nothing but bulk and clutter to the lines of a frame (and aren’t compatible with the majority of curvy, plastic frames prominent today). While a folded tubular held under the seat with a Christophe toe-strap may have been de riguer and kinda cool back in the day, running tubs nowadays is not only uncommon, but an exercise in futility should one ride on any road less smooth and glass-free than a baby’s bum. So you see, Rule #31 was a no-brainer.
But even this most important of Rules has its drawbacks; stuffing the three pockets of your jersey can leave you looking like the Hunchback of Notre Dame, albeit with the hunch on the lower back, and more akin to a series of tumours across the hips and lower spine. Not a pretty sight. My usual pocket-stuffing routine would entail a tube and tyre levers bundled together with a rubber band, stuffed in the middle pocket, with a mini pump accompanying it. The phone would go in the right hip pocket, along with a camera (if there were to be some photo ops along the route, or blatant bike porn shots) and gels and bars in the left. Any extraneous clothing shed en route (arm warmers, cap, gloves) would then be forced in wherever they would fit. If a jacket was required, then all hell would break loose.
But recently I happened by chance upon an item that has made my life, and my riding experience all the easier and clutter-free. Lezyne products were having a season launch of their new, cool gear, and everyone attending received a free gift; in my case, I was handed the Caddy Sack, a simple PVC pouch. Inside was a metal patch kit with glueless patches, and a pair of mini tyre levers. I took it with a degree of dismissal, thinking it would just end up in the pile of superfluous bike crap scattered around my house. But I decided I’d see how much I could load it up, and was surprised to find that it holds a veritable shitload of gear. There’s room aplenty for a tube, levers, patch kit, multi tool, card wallet and phone. But if I want to, I can easily ft in another tube, a bar or two and a couple of gels. And it fits with ease into the middle pocket of all my jerseys, especially the sweet V jersey which is always the go-to garment of choice. This leaves the two outside pockets with more room than ever for whatever the ride requires from the aforementioned list-of-crap-one-may-carry.
Sitting alongside the 31 Sack is always the best mini pump I’ve ever used, the Lezyne Pressure Drive M (for medium). Why is it the best? Just look at it! It’s sexy, yeah, but for such a small unit it packs plenty of air into each stroke, and I can get a geniune 100PSI into my tubes during any roadside repair. But the best feature is the flexible screw-in hose, which eliminates the chance of breaking off the screw-on end of Presta valves, as has happened to the best of us when vigourously hacking away with a fixed-head pump. C’mon, admit it, you’ve done it. No more chance of that with this little beauty. Quite simply, it rules (31 especially).
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I'm a heavy fellow (ah yes, the world of cycling, where 180 is heavy) and I run my rear tire at 110-120, and my front around 100-110. I just try to eye it with my floor pump, so I'm never exact.
The only time I've really noticed tire pressure adversely affecting me was when I neglected to pump my tires for several weeks, and on a ride home from work noticed it was taking more effort than it should to go up moderate hills.
Since I don't race, my ride times and speeds are all over the map depending on how I feel any given day, so I haven't really tried to correlate poor performance to my normal tire pressure, or if changing it slightly would help at all.
@Pedale.Forchetta
As am I. On my 25's, I put 120 in the rear and 105 up front.
Then again I'm 97 kg on a 9 kg bike. And not fast.
@xyxax
Road surface has a lot to do with it too. I weigh 155-160 (in/out of season) and usually ride 95 in back and 85 in front on 25s for training, a little more in 23s to race, a little less in 28s for brevets. That's optimized for crappy New England roads - out West and down South you can run higher pressure on smoother pavement...
That's not high for a big fella - at about 100kg and a tad slower than I once was I also run 120 rear and 110 front on my Pro3s. My earlier comments were related to racing sardines who waste heaps of energy riding tyres at too high pressures - there's absolutely no way a 60kg-ish rider needs more than 120psi in any tubular tyre, even racing in the dry.
@Oli Brooke-White
Heh; I like "racing sardines". Time spent bouncing in the vertical plane is not well rewarded, if I understand correctly. That said, gravity for us non-wee fellows is a bitch.
@blaireau
True enough; other than the Brooklyn-Queens Expressway, which I am loathe to ride, we might have more hard tire-forgiving surfaces here in... where are we...Middle England? I do commute on 28s at 90, though
@all
while this is a metric-centric site, I am glad we are not speaking in kilopascals.
Check out Mike Varley's take on tyre pressures, and follow the links to more in depth corroboration from experienced guys like Sheldon Brown and Nick Legan.
And more from the cats at Wheel Energy via cyclingnews.com
@Oli Brooke-White
Thanks for that second link... super interesting. Amazing that there is a rolling resistance difference between latex and butyl tubes.
Oli... thanks for these links. V helpful. As a 95kg rider, now realise I've been running far too high a pressure... and suffering from punctures accordingly... probably another symptom of my chronic Gyllenhaal Syndrome. Now corrected...
On another topic - have you read the transcript of the Landis / Kimmage interview... sad stuff, but a surprisingly compelling read.
Check out the description of the lezyne caddy sack on realcyclist.com: http://www.realcyclist.com/lezyne-caddy-sack-tool-bag
I just happened to be researching this bag and I thought the references to the rules were interesting, although a primarily online cycling retailer like realcyclist referencing the rules seems wrong somehow and also seems to really violate rule 58.