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Just wondering if anyone knows about modding the sub frame I read in marches issue of dirt wheels about Josh Creamers kfx having the sub frame shortened to his specs im not understanding what this does or how they do it so if anyone could shine some light on this.
 

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QUOTE (kfx450ripper @ Mar 27 2009, 09:07 PM) index.php?act=findpost&pid=16636
Just wondering if anyone knows about modding the sub frame I read in marches issue of dirt wheels about Josh Creamers kfx having the sub frame shortened to his specs im not understanding what this does or how they do it so if anyone could shine some light on this.
The lower leg of the subframe is shortened and then rebolted to the main frame allowing the sub frame to swing down and this in return lowers the grab bar height. Basicly you are lowering the center of gravity and making a flatter seat. Some guys just cut a part of the lower subframe mount out and then reattach it, while others cut the sub frame and then insert a block so they can drill and tap it for a heim joint.
 

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QUOTE (Conrad @ Mar 28 2009, 11:47 AM) index.php?act=findpost&pid=16639
The lower leg of the subframe is shortened and then rebolted to the main frame allowing the sub frame to swing down and this in return lowers the grab bar height. Basicly you are lowering the center of gravity and making a flatter seat. Some guys just cut a part of the lower subframe mount out and then reattach it, while others cut the sub frame and then insert a block so they can drill and tap it for a heim joint.
the problem with attaching a heim joint is there is an incredible amount of stress put in that location, and during much testing with these heim joints, weve broken several of them, so now we just cut a section out and then reweld it back on, looking factory. There is no height adjustment but you never have to worry about your subframe breaking in a crutial spot while riding/racing.
 
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