I lasercut some plates to hold the Hokuyo laser upside-down vertically over the RPLIDAR. This got the plane of both sensors as close as it's possible to get. Even so, there's about 40mm gap between the two. This means that we shouldn't expect the scans to line up perfectly (for sloping objects), but it should be fairly close.
Rough view from the laser's point of view. Stairway, posts and other crap in abundance.Laserbag_loop.bag:
Do the scanners ‘fight’ each other?
Red dots are RPLIDAR, white dots are HokuyoYes, it has more obviously moving parts and it's probably not going to last as long as the hokuyo in the field, but for now it looks good.