Complex sentence: After initial testing the LH.41, re-engined with the intended Lorraine 9Nb driving a Levasseur metal fixed pitch propeller Fitteditted with a dorsal oil cooler in place of the side mounted cooler the 9Nb was fitted with a short chord Townend ring by the time the race began.
Split into simpler sentences: After initial testing the LH.41, re-engined with the intended Lorraine 9Nb driving a Levasseur metal fixed pitch propeller fitted with a dorsal oil cooler in place of the side mounted cooler. The 9Nb was fitted with a short chord Townend ring by the time the race began.