(See FAM)

The sports and tourism aircraft factory “Avions Robin” developed the PRV, starting from a V-6-cylinder car engine (Peugeot-Renault-Volvo) and which had to make test flights on the R-3000.

-The transmission belt of the gearbox had internal steel reinforcements (wires, like certain tires).

“PRV engine”

From Appendix 12: Company that made an air engine based on Peugeot-Renault-Volvo, for general aviation.

"Power output through the clutch area" (PiP)