John Varley - Red Thunder

Varley, John. Red Thunder. R.X. 20060806. good story, lots of gosh wow, great fun yay we did it, and excellent built it ourselves stuff. a 6. The adventure is great, the afterwards was inconclusive, and sort of a let down. but easily dismissable. an excellent hard sf story, with the addition of the one 'fantasy' element of the drive, all else is quite 'real' science and tech. very like a perhaps somewhat more thoughtful Heinlein juvenile.
If you like this you might like Frankowski, Leo & Dave Grossman. The War with Earth.