I'll probably end up adding another 1/2" or so to the effective top tube and chainstay lengths (and therefore roughly an inch to the wheelbase). I expect a long 25.5" top tube will give me some more stem options (I don't want to limit myself to a 135mm stem). I also think it's a good idea to add some extra space behind the bottom bracket. Fitting the chainstays between the crank arms, chainrings and tire might be a bit interesting.
I am also considering a dual top tube, since that is one big front triangle! Something like this or this.
The geometry is essentially a longer version of the first generation Fargo, with a couple tweaks. I'm guessing the final design won't be too far off from this sketch, although I anticipate making a few minor adjustments. The big question is... can I can miter and braze the tubes accurately enough? We'll find out! Whatever happens, I'm confident the bike will be rideable even if a few angles and lengths aren't spot on.
On a related note, I had a 20% off coupon for a local bike shop so I picked up a tire for the fat bike...
I've considered saving up for another Big Fat Larry, but I have the feeling there will be more "big fat" options in the future. My hope is that with the increased popularity of fat bikes, Surly (and others) will be introducing more fat tire options at Interbike in September. For the record, the BFL I got came in at 1522 grams, which is almost 200 grams lighter than the 27tpi Nate I got last fall... I'm not much of a weight weenie, but I really should have spent the extra money to get the 120tpi Nate.
3 comments:
Hi,
Will you be using the application tubemiter, with which you can print a layout of the miter and scribe it on the tube?
Frank, the guy borrowing your art for an avatar on mtbr.
It's fun seeing the process. From the jig to the concept drawing. For what it's worth, I think the dual top tube could be kind of a cool design feature. Just on looks alone, I like the them closer together. Thanks for bringing us along on this interesting project!
Thanks Scott! I like the dual top tube in the first link too. I just have to figure out whether I can make it work or not.
Frank - Yup, I'll be using a mitering app for the main tubes. Not sure about the stays though... I might do those by hand. So now I'm curious, who are you on MTBR?
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