Thorn 'SONPak 7' OT 70.4

Thanks to John Mitchell for sending this fitting to me.

The floodlight had never been operated prior to its entering the collection. Very early versions of this fitting had aluminium bodywork; later versions (such as this one) saw the aluminium replaced with GRP. The same 'bubbled' aluminium sheeting used for the reflector in many outdoor lights is employed here.

These floodlights can often be identified by the distinctive tail section containing the gear and securing bolts for the mounting bracket.

Access to the gear is gained by removing the reflector. The capacitor and ignitor are hidden behind the ballast. Incidentally, the capacitor carries April 1990 as a date of manufacture.

The curved polycarbonate lens distorts the shape of the lamp somewhat.

The older version of this floodlight was installed alongside this fitting on Friday, 5th November 2010. The difference in the dimples on the two reflectors is very obvious here.

 

With the two floodlights operating, the effectiveness of both reflectors is shown - the older floodlight appears a little more glary than the newer example is; perhaps this is why the reflector patterning is different for the two versions.

How's this for a floodlighting scheme - having the fittings illuminate a street lighting display!

SONPak Floodlights in the Collection
1982	1983	1985	1990	1993 (150W)	2000
Installation and Servicing Instructions