Classic/Antique Car Repair: 1967 Rolls Royce Brakes, rolls royce silver shadow, royce silver shadow

Question
I have a friend that has a 1967 Rolls Royce Silver Shadow.  He wants me to look at this problem he has and I have no experience at all with these cars.  Anyway, the front brakes start to drag when you drive it a while and the brake light comes on the dash.  He has had it to another mechanic and he said he fixed it, but it still drags.  From all I can see he replaced the rubber lines going to the calipers.  Also, this might sound silly, but where is the battery located?
Thanks for your time.

Pete

Answer
Hi Pete:
The Rolls Royce brake system is one of the most complicated and sophisticated ever built. It is totally Hydraulic and has dual brakes on the front and back wheels. Overkill, but that is the way it was designed. The brakes are controlled by dual nitrogen-charged accumulator that requires rebuilding about every 30,000 miles or so. This could be your problem. The hydraulic system controls the brake as well as the auto leveling system that automatically adjust the car height base on the weight being carried.

The only thing I can tell you is, "Don't let any rookie mechanic mess with those brakes. They will screw it up for sure".

Find a Bentley dealer / repair shop or a British repair shop. They are your best source for working on the complicated parts of these cars.