Good RPM from a standard 2.4 200

[jackeen's Missus]

You tearing down the Long Mile Road in that Hydro?

Missus

[Hydrostream]

No, was not me I assure you, 70 is enough to scare me at the moment. Lol

Also my dash isn't that fancy Need new gauges

[Hydrostream]

Matt; Intimidator 21 at 94mph. I don't think the phantom has a pad though so I don't know!

http://forums.screamandfly.com/forum...threadid=61125

[Rogue Wave]

Originally posted by Matt
So, really, how much HP to make a phantom 21 go 100 mph?
I reckon absolute minimum of 450hp. More if multiple engines.

that's a hard question I know a guy with 650 hp in a phantom 28 and that doesn't gp very fast. (luvly wiring job though)

[Jon Fuller]

Neil Holmes put together a pretty special P21, all fancy stuff, + loads of very stiff balsa bits 'n' bobs, called 'Here on Business'

It had summat like 330hp from the worked 2.5 EFI, and ran (a genuine) 93mph.

You could use the old Levi formula to work out the extra required for 100 mph, I would take a rough guess at 400hp, but matt could be right, of course, it would have been set up for alround use, so if pure top speed were the only requirement, mebbe a ton would have be pos with the existing power.