LOL 120 mph on a bicycle!!!! that is insane... I suppose that next year you will be going with the pulse jets that make 100 pounds of thrust each. yeah so, I resubmit my worried observation about the springer on this bike... I really REALLY don't think that the springer was meant for 100+ mph.
I appreciate your concern and sorry to hear of your accident and actually we are planning 2 x 200# thrust engines each side but that will be a custom frame i am working on now, which brings me to ask is there any one using "solid works" application I need some help on animate.
Cheers
Royz