Since a couple of months I drive my VMC Speedster here in Germany. We are not having sun all day long, not even in summer. It happens that a shower is comming up while driving on highways.
Result : 1 quart of water on the floor on both sides .
I wonder where it is comming from.
Spend a lot of efforts to seal the windscreen frame r+l. Even on top between frame and roof. - I added rubber gaskets on both doors, A-pillar and B-pillar.
I closed the whole lhs where the cables are entering from the wing on top of the fuse box. I put grease in the windshield wiper-openings.
The roof is water tight. There are no obvious water leaks from inside.
The bottom of VW pan seems to be OK, however I re-sealed some areas where it looks suspicios. There is a rubber boot where the shifting rod is entering the VW-pan. I can seem foam had been spryed by VMS between body and pan in front of the engine.
I suspect that the air-drag of the closed roof is sucking water into the floor area - you can feel cold air is comming out of the handbrake/ heater lever while driving with closed roof. But you can not see it.
The air from handbrake is less when the roof is open.
Can you give some advise ? (other than to avoid driving in sunny weather only ;-)
Bjoern from Germany.