... brilliantly effective as is the Land Rover drum hand brake on the prop shaft..
So long as you only use it as a parking brake.
Apply while moving and you will have a vehicle jumping about and often breaking a half shaft.
The transmission brake on early Discoveries worked well for parking as it works on all four wheels although if you put the transfer box in neutral, you have no handbrake at all.
You could only ever use it once as an emergency brake when moving as it tended to break the prop shaft UJs. You then had a huge problem as you had no handbrake & leaving it in gear had no effect.
