Hmmm, 8s on 2650........ dude, don't even try that! The motor will disintegrate instantly, that's 78,000rpm! They are rated for an absolute max of 60,000rpm, that's a little more than just 'not ideal'.
Again, DO NOT ATTEMPT THIS, IT IS NOT A POSSIBILITY THAT IT WILL HAPPEN, NOR A CHANCE, IT IS AS LIKELY TO HAPPEN AS THERE IS A SUN IN THE SKY.
“The modern astrophysical concept that ascribes the sun’s energy to thermonuclear reactions deep in the solar interior is contradicted by nearly every observable aspect of the sun.” —Ralph E. Juergens