Administrator edit: Updates and full build pictures are available starting here:
http://www.ridemonkey.com/forums/showthread.php?p=2907166#post2907166
--------------------------------------------------------------
I have posted a few things over in the gearbox bike thread saying I have been designing and getting ready to build a dh race bike utilizing the g-boxx2 and making it sub 40lb for a full build with my buddy Ryan. I figured its at a point that people could check it out, parts are being made and we are getting ready to start building tooling.I feel that 40lb is the threshold where if you can make a gearbox bike this light, it is going to be easier to accept by the general DH race public. Super low CG and unsprung weight are big bonuses and I have a feeling this thing is going to be super snappy and ride much lighter that it is. The specs are as follows:
HA: 65.5
Eff. Top Tube: 22.38
BB height: 13.75
Travel: 7.25
Chain stay: 17.38
Wheel base:45.25 (full droop)
Target frame weight: 7lbs with hardware, no shock (optimized for 165lb rider)
Integrated seat mast
Ive designed this bike a little less slack, but with a decent length top tube (for me) to try and keep the wheelbase a bit longer for stability at speed, but also the rider CG further forward, to natural weight the front end for cornering. The rear end is 4130 steel and the front 7005 AL. I did this to stiffen up the rear end, as in the given volume, you can make the stiffness to weight much better with steel. If you have any questions, let me know. Here are some pics:
http://www.ridemonkey.com/forums/showthread.php?p=2907166#post2907166
--------------------------------------------------------------
I have posted a few things over in the gearbox bike thread saying I have been designing and getting ready to build a dh race bike utilizing the g-boxx2 and making it sub 40lb for a full build with my buddy Ryan. I figured its at a point that people could check it out, parts are being made and we are getting ready to start building tooling.I feel that 40lb is the threshold where if you can make a gearbox bike this light, it is going to be easier to accept by the general DH race public. Super low CG and unsprung weight are big bonuses and I have a feeling this thing is going to be super snappy and ride much lighter that it is. The specs are as follows:
HA: 65.5
Eff. Top Tube: 22.38
BB height: 13.75
Travel: 7.25
Chain stay: 17.38
Wheel base:45.25 (full droop)
Target frame weight: 7lbs with hardware, no shock (optimized for 165lb rider)
Integrated seat mast
Ive designed this bike a little less slack, but with a decent length top tube (for me) to try and keep the wheelbase a bit longer for stability at speed, but also the rider CG further forward, to natural weight the front end for cornering. The rear end is 4130 steel and the front 7005 AL. I did this to stiffen up the rear end, as in the given volume, you can make the stiffness to weight much better with steel. If you have any questions, let me know. Here are some pics: