On Sun, Feb 28, 2021 at 08:51 PM, Craig Briggs wrote:
Hey Arno,Hi Craig,
Have a look at the enclosed PDF.
As you can see it's drawn in the early nineties. It is the top end of the C-Drive and it shows clearly the double lipped seal at the ingoing shaft of the C-drive. I'm not exactly sure about the build years of the different Amels but I'm pretty sure this drawing originates from the Super Maramu-era.
As this is only a single seal my guess is they wanted to maximize its lifetime by using a double lipped seal.
And about dust in the air, you should visit Curacao at some days, lots of Sahara Dust in the air. Typically our Amel is covered in the stuff after we collect her at the end of the hurricane season. Speaking from experience that dust works its way into everything. An intake filter is always a good idea.