And see this on ES for wider bottom brackets ?
http://endless-sphere.com/forums/viewtopic.php?t=26023
http://endless-sphere.com/forums/viewtopic.php?t=26023
Maybe mount the pv cells under a clear Plexiglas or polycarbonate fairing?
Polycarbonate is quite often used in building applications etc, Wickes etc sell it, look for a damaged sheet and haggle?
And see this on ES for wider bottom brackets ?
Endless-sphere.com • View topic - Extra wide bottom brackets for battery box clearance