I had a letterbox screen on my ST1100, it was an OEM Honda part for the police bikes. I think that it's main function was to stop the turbulence generated by the bigger wider screen, with the slot closed the rain swirled around behind the screen. It was a lot calmer with it open.

Some Honda Gold Wing screens had a vent in them, mainly the 1500 one I think.

OK, not a scooter. Or is it? Not really a motorcycle is it?

Bikerbaker wrote: ↑Wed Oct 31, 2018 1:45 pm Some Honda Gold Wing screens had a vent in them, mainly the 1500 one I think.

OK, not a scooter. Or is it? Not really a motorcycle is it?

Well, I believe the forthcoming version of the Goldwing will be DCT only, so even closer to a scoot!

Bikerbaker wrote: ↑Wed Oct 31, 2018 1:45 pm Some Honda Gold Wing screens had a vent in them, mainly the 1500 one I think.

OK, not a scooter. Or is it? Not really a motorcycle is it?

It's the ones with underfloor heating, loudspeakers, and disco lighting in the cornices that get me!