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Jun 14th, 2026
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Joined: Aug 2013
Posts: 15,794 Likes: 15
Formerly known as Aldermog Member of the Inner Circle
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OP
Formerly known as Aldermog Member of the Inner Circle
Joined: Aug 2013
Posts: 15,794 Likes: 15 |
We went over to seem Mark M this morning, weather dull, roads damp and greasy. Hood down...
After about 10 miles I could't see through the rear mirror, so wiped it clean. Then started to wonder why the view through the screen was dim, the wipers made no difference. Odd: I then realised the road crud was on the inside of the screen, mostly in the centre...
Stopped to clean it down and noticed the crud was also on the instruments...and on the back of the seat headrests!
It seems as though dirty damp air is comming into the cabin, possibly between the seats and slowing as it hits the inside of the screen.
This is most odd. Our Roadster didn't do this, so the aerodynamics must be different yet the car looks much the same.
Has anyone else noticed this "problem"?
If you have experienced it is there a solution?
Peter,
66, 2016 Porsche Boxster S
No longer driving Tarka, the 2014 Plus 8...
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Joined: May 2007
Posts: 849 Likes: 2
TM Photographer of 2008 Talk Morgan Regular
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TM Photographer of 2008 Talk Morgan Regular
Joined: May 2007
Posts: 849 Likes: 2 |
This also happens in my Plus 4.
Ken
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Joined: Jul 2011
Posts: 3,643
Talk Morgan Addict
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Talk Morgan Addict
Joined: Jul 2011
Posts: 3,643 |
Yes, occurs on my Plus 4 too.
Ian
2011 Plus 4
Wild Mogs Reims 2019, Goodwood 2018, Isle of Man 2017, Carried on to Caramulo" 2016
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Joined: Feb 2012
Posts: 5,654 Likes: 4
Charter Member
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Charter Member
Joined: Feb 2012
Posts: 5,654 Likes: 4 |
I have noticed that the plus 8 pulls a lot of rubbish and dust into the interior which I have not experienced on any other Morgan.
Martin (Deano)
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Joined: May 2014
Posts: 5,437 Likes: 131
Black Rat Charter Member
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Black Rat Charter Member
Joined: May 2014
Posts: 5,437 Likes: 131 |
It'll no doubt be due to the vortices created by the wider wings. The answer drive slower  
Keith
2013 narrow bodied + 4 Ruby.
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Joined: Aug 2013
Posts: 15,794 Likes: 15
Formerly known as Aldermog Member of the Inner Circle
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OP
Formerly known as Aldermog Member of the Inner Circle
Joined: Aug 2013
Posts: 15,794 Likes: 15 |
Perhaps your roadster wasn't driven in quite the same combination of weather and speed.
Certainly driven in the same weather, and given the state of the roads today, certainly as fast!
Peter,
66, 2016 Porsche Boxster S
No longer driving Tarka, the 2014 Plus 8...
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Joined: Aug 2013
Posts: 15,794 Likes: 15
Formerly known as Aldermog Member of the Inner Circle
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OP
Formerly known as Aldermog Member of the Inner Circle
Joined: Aug 2013
Posts: 15,794 Likes: 15 |
It'll no doubt be due to the vortices created by the wider wings. The answer drive slower The Roadster, and +4, are trapezoidal in shape, the front track narrower than the rear. The Plus 8 is square, same track at both ends. The Plus 8 has rather wider rear tyres too! Another difference is that the Trads have a curved fairing under the back of the car incorporating the reversing and fog light. The Aero chassis doesn't. Together I suspect the result is a much more pronounced vortex off the back. I don't suppose the car has been in a wind tunnel.... A diffuser screen is very probably the answer...
Peter,
66, 2016 Porsche Boxster S
No longer driving Tarka, the 2014 Plus 8...
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Joined: May 2007
Posts: 849 Likes: 2
TM Photographer of 2008 Talk Morgan Regular
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TM Photographer of 2008 Talk Morgan Regular
Joined: May 2007
Posts: 849 Likes: 2 |
This also happens in my Plus 4. Yes, occurs on my Plus 4 too. The Plus 4 may be different but it still gets covered in crud.
Ken
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Joined: Aug 2013
Posts: 15,794 Likes: 15
Formerly known as Aldermog Member of the Inner Circle
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OP
Formerly known as Aldermog Member of the Inner Circle
Joined: Aug 2013
Posts: 15,794 Likes: 15 |
Now I'm very confused! In aldermog there was an occasional trace of crud on the inside mirror, but nothing on the screen or instruments. I've spoken to a couple of other Roadster owners and they both report similar experiences. So +4, new +8 get dirty. Perhaps that is what the "Plus" means... 
Last edited by Peter J; 01/12/14 09:13 AM.
Peter,
66, 2016 Porsche Boxster S
No longer driving Tarka, the 2014 Plus 8...
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Joined: Apr 2014
Posts: 3,550 Likes: 5
Talk Morgan Addict
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Talk Morgan Addict
Joined: Apr 2014
Posts: 3,550 Likes: 5 |
I took mine out in similar conditions after Peter and Caroline left.
Apart from the airflow deposited muck on the wings I had nothing in the Roadster or on the rear. The roads may have been a tad drier but they were still wet enough and dirty..
There is no mistaking it on the plus 8.
It is a bit strange.
Has anyone got access to aerodynamic modeling software? We could get to the bottom of it.
Mark - No Longer driving Archie the Old English Sheep Mog........... 2010 Roadster 3.0 V6 (S3) 
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