[Y-Blockhead]

Originally Posted by MikeK

The RP envelopes followed in a further attempt to change and reduce the blackening pattern as lamp aged. You may notice many RP envelope lamps have black dots or caps (skew caps) attached. These are more effective than the ridges in reducing glare to oncoming traffic.

As a side-note here, you will notice 'modern' halogen headlamp assemblies all have mechanical caps in front of the envelopes to prevent direct line of sight.

Mike, If I remember correctly you mentioned installing "Skew Caps" in the past. I am running Ron Francis Brite Bulbs (125/75 CP) and was wondering if I installed "Skew Caps on the bulbs it would cut the glare as they are pretty bright. Again going from memory you suggested using aluminum foil? Thanks.