I've been wondering how fast a Serpent 950R might go with a .91 ducted fan engine in it!?
25,000 r.p.m. sustained, with almost 5 REAL horsepower...hmmm...

Edit: let's see if this link works? http://www.rcuniverse.com/forum/m_52...tm.htm#5234395

Might be wrong thread...but I didn't want to start a new one just for a random thought...

Edit #2: Yep...the link works...
There are some serious kick ***** engines there in case anyone's interested.