Archive for November, 2009

New Tools

I’m out of the shop this week, well at least Carl’s shop.  I’m in Hailey for Thanksgiving and my birthday.  My good friend Eric Coury is also in the process of becoming a framebuilder.  I stopped by his shop to check out some of his new tools.  He just received a new sputnik frame fixture that is nice!  He is currently working on a pair of pump track bikes for some friends of ours, which are also looking nice.  In his free time the shop guys mess around with vintage Ferrari restorations.

I also received a new tool for my birthday last Saturday.  My dog loves nothing more than to open presents.  I think it was just as much fun for him to rip open that Anvil BBG!

One Year

Today marks one year since I left Bend to start my apprenticeship.  Carl and Loretta had an awesome surprise party for me.  Loretta made all the food, not to mention some of the best ice cream cake ever!  Dave Kirk even made it down from the mountains known as Story Mill.

 I’ll tell you what; it sure doesn’t feel like a year has past.  The job is the highlight of my week, so it’s never difficult to show up.  I’m really starting to roll on my frames, and I feel like I’ve accomplished a lot in one year.  The apprenticeship is a lost method of teaching in the framebuilding world, and I’m thankful Carl is one of the only builders keeping it alive.

 I also had the chance to make a new head tube adapter for the frame fixture.  We needed a new “puck” to fit the larger diameter of a carbon head tube with an internal headset (we have others for 1 inch, 1 1/8, and King Inset).  I turned a new one down on the lathe.

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We also started working on the prototype carbon bike.  I’m very excited about this bike, because it’s a size that Carl, Jared, and myself can ride.  I think that carbon fiber is an excellent material for bikes.  However, the unfortunate mass producing and marketing of it has left a sour taste in a lot of mouths.  Many people will accuse carbon for not having any “soul”.  I feel this is a problem due to construction and geometry choices, rather than material.  As a material, it’s damp and stiff; at least more so than other options.  However it’s very tunable, and in the right hands, can give great road feedback to the rider.

It’s also very entertaining to work with.  It behaves so much differently than metals during machining and fitting of parts.  It’s hard to put into words; you just have to build something with it to realize it’s not just another material.  Carl and I are already taking bets on frame weight.

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I finished my new mountain bike last week.  I haven’t had a chance to ride it on dirt yet, maybe this weekend though.  I have been using it for commuting duties, because the streets are scary icy right now.  The cross bike with 35c’s and rim brakes was just asking for trouble.

I’m going to start a new town bike this week.  In the past I’ve always thrown some fenders on my cross bike and called it good.  Now that I have the option to make anything I want, I’m going to go with a more purpose built machine.  I’m thinking disc brakes, 42c knobby tires, riser bar and some more fender/tire clearance.  Maybe even a rear rack, instead of stringing grocery bags from my brake hoods.   For some reason those eggs always levitate towards my spokes at any sign of a pothole.

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Winter Commuting

There are days when it’s not so much fun……………

 

Just a note, riding season is officially over!

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Product Testing

I’m  rounding the bend on finishing up the new hardtail.  However, I got a little distracted riding the old one this weekend.

 

It will be a sad day when the Ibis griptape final wears off the welder footpedal.

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Redo

So, I decided to rebuild my hardtail from a couple of weeks ago.  It rides and fits great, but I was a little unhappy with the build quality. 

More importantly, I want to practice making chainstays from raw material.  I will be offering titanium bikes in the future, and the vast majority of the seatstays and chainstays are made from raw tubing.  The builder selects the diameter and wall thickness to tune the ride.  The builder also has to place all the bends for tire/heel clearance, as well as, adding clearance for chainrings. 

Comparing the cost of titanium to 4130 steel leads me to believe it’s best to start with stuff that’s about 3 dollars a foot.  I also think that most of the current mountain bike chainstays are just so-so.  The bends usually aren’t big enough, so you have to increase them.  This tends to flatten the stay even more.  Also, it can be difficult to add a second bend for heel clearance without wrinkling the stay.  The factory s-bend models don’t have the bends placed in the correct location for tire clearance (supposedly true temper has a new model out).  To top it off, all of the production 29er chainstays are tall and narrow, which is not the best shape for handling lateral loads. 

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Whole Lot of Finish Work

I’ve been doing a lot of finish work lately.  Carl just keeps them coming!  The tap handle for the seat tube reamer finally gave up the ghost after 16 years.  I had three bikes piled up to go to paint, so we fashioned up a new handle.  We made it out of a piece of bar stock steel and welded it on.  It’s a little cowboy, but now it has a ton of leverage

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