Lost? No, seeing America.
Join Date: Sep 2008
Location: Webster NY
Bikes: '02 Fuji Finest AL, '97 Trek Multitrack 730, Amped kit rear
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35 is realistic, but unsafe sounding for your bike. I don't think I'd like to go over 30 unassisted on my current bike (I do pedal up to mid-40's going down smooth familiar hills). 22 unassisted is entirely fine with me.
With a very solid frame you could get yourself up to 45-50+ if that's what you want. Here's some info for you to look into, but I DO NOT recommend it. Get as big a controller as you can. 72 v, and like 35+amp (or bigger, if you want...). Get two Ping 36v 20ah and hook them up to give 72v. Get a 1000w BMC rear hub motor. Wear all sorts of padding and hard helmet. Be sure to leave all your bike parts to charity in your will.
Do some more research over at endless-sphere. I know some of them really like to push some theoretical limits just for the sake of seeing what controllers etc can handle.
Oh, and make sure your brakes can handle it, too.
ps- don't do it on a road, because when you crash and burn it gives the rest of us a bad image.