The Aerodrome Forum - View Single Post - THE HISPANO-SUIZA V-8 718 & 1127c.i. CRANKSHAFT PROBLEMS

m9a3r5i7o2n · 10 July 2008, 01:40 PM

#8 (permalink) 7 July 2005, 02:40 PM
Quote from

an_San_Abbott
Forum Ace of Aces
Contributor
Join Date: Aug 2001
Location: Ceres, California
Posts: 6,742
The sweet sound of a Hisso.
Retread:
My friend Lee Branch and I were discussing the gear problems with the Hispano-Suiza 8Ba engine. I had thought the problem was improperly heat treated reduction gears. Lee said, "No, it was design failure in the copper feed pipe that brought oil to the reduction gears, the wall of the copper tubing was too thin and it failed under pressure, thus depriving the reduction gears of the necessary lubrication. Hispano-Suiza did not want it known that it was a design error, so they put out the story of the improper heat treating of the reduction gears."

Yours, M.L. Anderson

10 July 2008, 01:40 PM	#70 (permalink)
m9a3r5i7o2n Two-seater Pilot Join Date: Dec 2007 Location: Las Cruces New Mexico U.S.A. Posts: 166	Quote below from a previous post I finally refound. #8 (permalink) 7 July 2005, 02:40 PM Quote from an_San_Abbott Forum Ace of Aces Contributor Join Date: Aug 2001 Location: Ceres, California Posts: 6,742 The sweet sound of a Hisso. Retread: My friend Lee Branch and I were discussing the gear problems with the Hispano-Suiza 8Ba engine. I had thought the problem was improperly heat treated reduction gears. Lee said, "No, it was design failure in the copper feed pipe that brought oil to the reduction gears, the wall of the copper tubing was too thin and it failed under pressure, thus depriving the reduction gears of the necessary lubrication. Hispano-Suiza did not want it known that it was a design error, so they put out the story of the improper heat treating of the reduction gears." Yours, M.L. Anderson