[FIRE]

Originally Posted by AdamAshmore

While catching up on some reading over Christmas (the car is still in the garage ) I came across a letter to MotorSport from Peter Felder (p28 vol LXXXIII Jan 2007). It refers to the 1974 Interseries 917-20 (sic? 30?) and its adjustable wheelbase! How did this work?

http://www.racingsportscars.com

For more pictures see p203 in Porsche 917 The Heroes, the Victories, the Myth.* This book refers to the car having "served for wheelbase tests". It won four times that year.

*More reading to catch up on...

Today I received a copy of Porsche 917, The Winning formula by Peter Morgan. At page 183 & 184:

...
The first opportunity was at Paul Ricard, on the beautiful Mediterranean coastline near Bandol. Flegl and his engineers had cut their 917/10 test car in half, just behind the cockpit. The plan was that they could insert additional side-pieces of different lengths, so giving different wheelbase comparisons on the same car. As well as the standard 2,316 mm, they made enough parts to try 2,400 mm, 2,500 mm and 2,600 mm wheelbases. It wasn't as simple as just bolting and unbolting the tubes however and a large number of extra body panels, pipes, shifting levers, cables and so on were needed to cater for different lengths in the engine compartment. "When we realised it took one working day to modify the car, we knew it would take forever to test all. We just decided to go for the 2.5. I'm sure the 2.6 would have been even better but we were so happy with the results of the 2.5."
...

BTW Is Porsche 917 The Heroes, the Victories, the Myth a good book?