I’m just about done with the second dirt road bike except for braze-ons.  The second one turned out a little better, so I will be sending it to spectrum in the next few days.  Some quick stats include OX Platinum 31.8mm DT and 28.6mm TT, both with .7-.4-.7 wall thickness for the front triangle.  The back half has true temper 16mm-11mm tapered seatstays and Columbus teardrop shaped chainstays.  A Columbus 1.1mm head tube and True Temper externally butted seat tube complete the frame.

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Chainstays and Seatstays ready to be mitered.

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It’s essential that the seat tube is perfectly aligned perpendicularly with the bottom bracket or the rider will be biased towards one side of the bike.  The rider will then have to rock his/her hips to compensate for this.  If it’s perfect the bar will slide in without having to push the seatube up or down.   It’s stepped for different size seattubes.

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Checking for fender/tire fit one last time before I weld the rear triangle on.  At this point, it’s only tacked and can be adjusted if needed (read: break the tacks, bend or dimple stays, retack, recheck).  I can simulate this in the fixture to a certain extent, but I like to have the real thing fit before I weld the frame.  

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