Both of those are RV-8's. I assumed we were talking about the -6/7/9 since there is no tip-up available for the -8. Completely different airframe with different air loads.
If you do a search on the side-by-side RV's who have left the canopy open, apparently they won't budge with air loads applied.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC