This is the good stuff...

After thinking about it, nay -- dreaming about it -- for a year and a half, at least, I've finally gone and ordered the parts for a really, really slick set of wheels for my road bike. I have an older set of American Classic hubs (no, they weren't subject to the recall) with Sapim CX-Ray spokes and Speedcific Niobium 30 aero rims. If that means nothing to you, trust me when I say that this makes for an utterly swanktastique wheelset. CX-Ray spokes are over $2 - EACH. (and that was a really good price) They're an ultra-lightweight spoke that's formed into an aerodynamic blade, and this process actually makes them tremendously strong... so strong that they've been used in downhill mountain bike wheels. That's the last place you'd expect to find ultra-lightweight spokes!

The Speedcific Niobium 30 rims are a deeper aero section rim made with an aluminum alloy that uses Niobium to make it far stronger than normal aluminum, so it can be used to make surprisingly light rims. For most aero section rims, we'd be talking about over 500g each, but these were 457g and 443g!

Blah, blah, blah, words, words, numbers, words! Forgive me, I like this stuff... so I like to talk about it. The ultimate result is a light wheelset which will still be quite aerodynamic and strong.

The best part about it is that since I had the hubs, and bought the rest of the parts from Mike Garcia of Odds and Endos and now Speedcific fame... that means I have to build the wheels myself. Considering that's one of my favorite things, it makes the whole project even better!

Tonight, I got home at about 5:30pm, got to work on the wheels, and now it's after 9pm, the front wheel is done, and the rear is coming together. I really took my time building up this set, and hope it shows when they finally hit the road. Of course there are other things that I really should be doing with that time, but I enjoy this far too much to go and waste my time being responsible. :)

Project... 17?

Just for grins, I got a pair of Kenda Klimax Lite tires for Grace's bike. While the Karmas are light at 450g, the Klimaxes are deep into ludicrous territory -- 345g each!! They're listed as a 2.0, and although I haven't measured, they look more like a 1.8, maybe a 1.7. They're SLIM. There's also a bare minimum of tread... they look more like cyclocross tires than MTB tires... and I think most cyclocross tires are even heavier.

So, with all this in mind, I tell Grace that I'm putting them on so she can try them, and we both more or less expect she won't like them. One time we tried Racing Ralphs, which are another light race tire, and she hated them, and wound up crashing. So, with that in mind, she set off on a ride today. (I actually tried to join her, but that's a story for another post... soon to come.)

I nervously awaited her return from the ride, to find out what she thought of the tires, fully expecting something along the line of "get these $%&#ing things off my bike"... but when I see her, she's SMILING. Ask her how the ride was -- it was REALLY GOOD! The tires? She loves them. Had some problems on steep, loose climbs with insufficient traction (not surprising!) but beyond that, they were FAST and they accelerated like nobody's business.

So, it's all good, surprisingly. We won't leave them on for daily riding, but they'll be great for hardpack events like Fair Hill.

Oh, and with those tires on ... 18.06lb!

Problems can be opportunities!

Grace has found a new riding buddy in the form of another woman mountain bike racer, and they've been riding like crazy! They're getting along great, and having a bunch of fun. Just the other day, they went out and rode High Rocks (aka Ralph Stover) and found some new, technical trails. Riding some of these trails, Grace breaks a spoke in her rear wheel. When she tells me about this, I'm a little worried that she's getting into freeriding, something you don't necessarily want to do on an 18lb bike!

Well, turns out the broken spoke wasn't caused by her abuse, but instead by a mistake of mine... when we first got the wheels, her chain overshifted the big cog and wound up between the cassette and the spokes, which chewed up the spokes. The spoke that broke was one of those, and broke at the spot where the chain had chewed it up. So that's good news. Looking at the spokes, I realize I could just replace the damaged spokes, but what's the fun in that?

A little bit of research later, and an email to Larry at Bike Tools Etc., and I decided on the Sapim CX-Ray aero spokes. Aero spokes are ovalized to help them slice through the air, but on a mountain bike, the speeds aren't high enough for that to really be a benefit. No, the real reason for using the CX-Rays is that they are supposed to be incredibly strong, despite being among the lightest spokes out there. I guess the forming process which turns them into an aero spoke strengthens the metal. Either way, they've got a great rep, and will save almost 90 grams over the spokes I pulled out of the wheel!

When I rebuild the wheel, I'm also going to replace the Stan's rubber NoTubes strip with a valve stem and 3M Kapton tape, which should save about 50 grams. I also have a pair of new Kenda Klimax tires ready to go, which I fully expect won't get the Grace seal of approval, as they're only 345g and really have no real tread to speak of. Still, that's another 100g and it's at least worth a try!

With those changes, if I were to do them to the front wheel as well... we're nearing sub 18lbs on her bike... and aside from the Klimax tires, it should still be perfectly usable and reliable, not just a scale queen.

Project 18 - adjustment...

I may have been a little hasty in my initial numbers on Grace's Scale, and I have to adjust the claimed weight of the bike.

I realized that the thick neoprene chainstay guard was still in place, and there was quite a bit of dried mud on the frame. Okay, so that's getting a little crazy -- but after pulling off the chainstay guard and giving the bike a good wash, the weight is now 18.52lbs.

Yeah, I fully realize that I'm taking it a bit too far, but let's be honest, to get it this light, you really kinda have to. I'm enjoying myself and Grace is happy with the results, so no problem!!

Project 18 - success!

Back in March, I mentioned my plans to get Grace's mountain bike down to the 18lb range. While a fully rideable and reliable mountain bike weighing in under 19lbs sounds like an impossibility, it's been done. Of course, she's riding a road cassette and dérailleur, and the front dérailleur has been pulled off and replaced by a very minimalist chain guide -- you can't get to 18lbs without making some compromises (or massive investments) -- but we've succeeded. I still have some work to do and some more parts I'd like to order. Unfortunately we're into the realm of diminishing returns, and to see a sub 18lb weight, we're going to be looking at those massive investments.

At some point I'll detail the work I've done to get the bike down this low. In the meantime, Grace has been absolutely LOVING the bike!

The typical response of the non-weight weenie to the investment of time and money required to accomplish a bike this light is "why not just lose 5lbs from yourself". Sure, that can be done ( and she's been doing that, too) but if you've ever ridden a bike that's 5lbs lighter, you'll know it rides TOTALLY different, and if it's been done right, it's different in a fantastically good way. Ask Grace, she'll attest to it.

What's really sad about this success is that Grace's 18.65lb bike is still equivalent to a 32.6 -- that's thirty two point six -- pound bike for me, based on body weight percentage!! To draw even with the 26.6lb weight of my Santa Cruz, we'll have to get her bike down to 15.2lbs!

Like a bucket of grapes...

Okay, that's it, no more making Grace's bike lighter and faster. Screw project 18, it's time for project fill-the-damned-seat-tube-with-lead-shot. We rode on Friday with BVL and Lance, where I was happy to discover that I wasn't the slowest of the group-- Lance hasn't been riding at all and had him a good suffer fest on his singlespeed... on the other hand, Grace did really well, passing me on several occasions.

Then, Saturday, I took the opportunity to swap her tires for the Kenda Karmas, and we got out last night to ride. This time it was just me and her, and she stomped me like a bucket of grapes at the winery. Stomped me like a bug. She just stormed right up the hills, she took off on the flats, and she even rocked the downhills. We didn't have much light, thanks to a late start, so had to bail out early and ride back on Forbidden, and towards the end, I couldn't even hang onto her wheel. The sprint at the end was utterly out of the question.

So she was getting fast before, and now she's officially there. She loves the tires, said she could feel a real difference on the climbs, and I felt a real difference trying to keep up with her on Forbidden. She didn't even notice that I had swapped out her 11-34 cassette for a 11-32, saving over 40g in the process.

So am I bitter? Will I stop making her bike lighter and faster? Hell no! I'm just gonna have to step it up and see what I can do about catching her. :)

18lbs, here we come...

Anyone who knows me in a bike context probably knows that I'm what's called a "weight weenie". I like light bikes, always have, back from the days when I was younger and bought a gram scale from a coworker at the bike shop. It was a scientific beam scale -- more accurately a "balance" and had a range of 0-300g with a resolution to .01 grams. In retrospect I probably should have wondered why he had a gram scale accurate to .01 grams... but I never did... I was just happy I could weigh my stuff. Using that I had my Cannondale road bike down to 18.5 lbs, which at the time actually WAS an accomplishment.

Oh, and yes, I recorded every part I weighed in a notebook, and listed the weight all the way down to a hundreth of a gram. That should give you a pretty good idea of how I approached things. I would weigh 10 bolts and use the two lightest... even though we're talking a 10th of a gram difference.

For a while, my weight weenieism was in remission... probably had something to do with me owning a Rocky Mountain Element, which was going to be heavy no matter what. Recently, however, it's been flaring up... first with Grace's Santa Cruz, now with her Scott. I had her Santa Cruz down to 22.8lbs, which is REALLY good for a full suspension bike. But when we got her the Scott Scale... well, look at the name... the "Scale". You know this is a bike made specifically for weight weenies, and you also know you can't go hanging heavy parts on it.

So, with that in mind, I built it up using what we had on hand, and it came out to be around 20lbs... just a little over. I wound up stealing more and more parts from her Santa Cruz, and as it stands right now, the bike hangs from the scale at 20.00lbs. DAMN!

Well, there's hope. To fit the bike to her, I was using various stems that I had on hand, and the one that wound up being the most comfortable was a 105mm no-name brick of polished aluminum that weighs in at 170g. I just ordered up a 106g Syntace F99 -- she's got a 90mm on the Juliana already. So that's 64g.

Next, I convinced her to let go of her trusty Panaracer Fire XC Pro tires. They're reasonable at 580g, but the Kenda Karmas she'll be trying are 450g -- 130g lighter a piece, for 260g total reduction, and at the wheels where it makes a bigger difference. I ran those tires for most of last summer, and thought they worked great, so she should like them better than the Schwalbe Racing Ralphs we tried a while back.

Another big difference will be in losing the e-type LX front dérailleur. Right now I am using the front derailleur as a chain guide, since the bike is set up as a 1x9. At 185g, that chain guide is almost as heavy as the downhill/freeride/4x chainguides available now! Plus, I run an outboard "ring guard" to keep the chain from jumping off to the outside... and even as a lightweight Spot guard, it's still 60g. Ditch the two of those, and you're looking at 245g of weight saved! I'm currently talking to a guy in Canada who has a carbon fiber chain guide which weighs in at around 10g!

Finally, I'm looking to replace the full run dérailleur housing with Nokon housing and a special rigid aluminum tubing I've been testing on my bike.

With all these changes -- the bike should wind up under 19lbs... my estimates are at around 18.6lbs! That's for a mountain bike... and it's in the same range as my old Cannondale road bike.

Awesome!