Bristol builds a better mousetrap.....
 

Hello,

we are doing some more work on the 409 and we found something funny while
overhauling the rear Tannoy ventilation fan....

http://www.stefanopasini.it/Bristol_409_Tannoy_Fan.htm

Everything is quite nice now, though it's really hard to understand what
this fan would be supposed to do in real life!

Cheers to you all,

Stefano



--
Dr Stefano Pasini
Bologna
Italy
www.stefanopasini.it

Hello Stefano,

I have only ever driven one 409 before but I am quite sure it didn't have that Tannoy switch (it doesn't look very original). I thought Tannoy only made speakers and PA systems?

Judging by the grilles in the rear parcel shelf, I can only assume that a previous owner was trying to emulate the rear cabin ventilation which was introduced with the 411 (the 411 has a small vent in each rear wing). However, I'm not sure where the air would be entering or leaving from the trunk/boot of a 409, or how it would reach the rear parcel shelf.

Maybe the fan was to provide a supply of air to the mice!

Cheers,
Kevin

PS. There was also a mouse nest under the rear seat of my 411 when I bought it, but thankfully the Antipodean mouse did not have a taste for Connolly leather :)

409, 410 ventilation
 

Resurrecting an old thread...

One of my 410s had the same switch on the passenger side of the boot opening.
There was a Tannoy fan that extracted air through a second speaker grille on the parcel shelf and exhausted below the left side of the boot by the rear bumper.
The job was very nicely done and, having heard of other V8s with a similar modification, I wonder if this was a factory modification.