The enthusiast following for Triumph cars, especially the sports cars, carries on undiminished, even though the marque has been defunct for 20 years - the Triumph Sports-Six Club has 16,000 members and the TR Register 8,000. Here, from a celebrated Triumph expert, is the inside story of a popular make that has always had a special place in the hearts of sports car enthusiasts. The varied content includes technical information, driving impressions and buying hints