If you like all things V twin and also like a bit of engineering thrown in for good measure then this website has something for you. It has been one of my favourites and I thought others might also get a kick out of it. I am not affiliated with the website in any way. As you scroll through the pages there is a pile of interesting builds by like minded people. Some high quality and some not but still interesting!
I hope you enjoy as much as I do.
http://www.diagnosis2012.co.uk/vtwinnews.html

5 Litre V Twin

If only I had more spare time https://www.youtube.com/watch?v=eNCMT5R-VUk