return line to gas tank

[Clive Apps Techno-Logicals 416 510 0020]

> >
> >PS detonation is not a problem over 3000 rpm (more flames).
> 
> No flames here. Just would say that reduction is proportional to speed, not
> an absolute transition at 3K. Increased engine speed is a well documented
> antidote to detonation. Drag racers could not begin to run nitro ("Pop") if
> they did not turn their motors so fast! I suspect that a lot of the really
> spectacular blows happen when the tires hook up too well, and slow the
> engine down enough to where detonation matters! Never seen any numbers
> (doubt if it is testable), but I suspect that nitro might have an octane
> rating in the high seventies or low eighties, if that high!!

combine that with the fact that it has a very slow burn rate and requires
lots of advance to make any power (50-70^) and you have a real problem
when RPM drops

Clive