I was looking for some expert opinions on some additional frame tubes on my RF80. I am making some safety-ralated frame modifications, but would also like to increase chassis stiffness while I'm at it. I plan on running more "modern" spring rates and ride height.
Tube #1, with Blue tape. Does this tube add any stiffness? It competes the load path of the upper diagonal nicely, but the tube it's supporting is 1-3/8"x.080, with a 12" span between supports. It will add a small ammount of intrusion protection, but adds ~ .4 Lbs.
Tube #2, with Red tape. Stiffness benefit? There would be a second diagonal tube, forming an X. It has to be fairly low to clear the bodywork. 1"x.035 would add 1.7 Lbs. , and 1"x.049 would add 2.3 Lbs.
Thanks in advance.