I've got my first bike on the road and I'm loving it!
Just wanted to say a big thanks to all those on the forum who have helped me thus far with a special thanks to Hugues, Hjns, Dogman, Ice57 and NeilP.
I think the big thing I have learned is that most of my questions could have been answered by using the brilliant ebike simulator.
My intention was always to build a test-bed bike to learn what kind of speeds, distances and hill climbing ability I would get in the real world with my setup.
As it turns out, so far after testing, the simulator has given me data to within a few percent of real world results.
Notice to all noobs like myself, play around with the ebike simulator, it's a bit daunting at first but it utterly invaluable in working out what kind of setup you need to build, to achieve your goals.
I bought a single 10S nanotech lipo battery which I run from 42V Hot down to 36.5V on 40A with a hs3540. I've set my LVC to 36.5 on my xlyte APM.
To my amazement it propels me at 25mph which is (currently) as fast as I want to go with a range of about 5 miles and my awesome lipo harness from ice will allow me to add more lipo in parallel and series.
What has amazed me the most though is that I can climb what I consider to be very steep hills throttle only. The grin-factor is high when doing this I can assure you....
I have two 6S bricks winging their way to me now, so combined with the 10S brick I'll have the option of 10S1P, 12S1P and 11S2P.
My controller's max voltage is 55V so in theory I could go to 13S 54.6V but I honestly don't think I need 32mph just yet.
I'm now more interested in range, the cavernous capacity of my falconev frame bag means I could fit more lipo then I'm ever likely to need !
Once again thanks to all who have helped thus far.