Originally Posted by Yeroon
This is all wrong. Tires have a slip %, steering has Ackerman, and you do not want your frame/chassis to flex if you want any kind of handling performance. Monoque chassis' are quite common on many performance cars (no frames).
A bike might be built with intentional give on a certain plane to increase rider comfort or add predictability, but otherwise the stiffer the chassis the more predictable to suspension will be to set up.
3d printed parts are weak, even the metal printers, if not more so. Metal printed parts are akin to green stage powdered metal parts before sintering. Its the post printing processing that makes these parts useful (forging, hydraulic pressure) and even then, only really complicated parts are made this way in production (ie in newer turbine engines) otherwise are used for "rapid" prototyping.
One thing first
I've been racing numerous bikes since i turned 14 (from 125's to 1200cc's BMW boxer s1100r's.
In the last years electronics start to make a big deal.
Before that we would take original frames (especially that of the suzuki GSXR1000 K6) to frame builders to alter the regity and stiffness.
They were way to stiff "off shelf" to cope with 200+ Bhp.
Our frame builder made itflex mutch more,
our frame flex'ed with a max of 12mm on a 47 degree lean angle (Front axle / rear axle).
Without it , you couldn't get the max potential out of the chassis.
Wich resulted in 0.5Sec. advantage per lap .
And 0.5Sec is ALLOT!
Over a 25 lap race that's 10 seconds.
Nowaday's with the new R6's , you can change the frame response on the fly.
And the numerous electronics options makes it much easier to ride and alter.
And yes , tires have a slip% , but without frame flex it would be to unpretictable to handle.