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WERK I WERK I is offline
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Join Date: Jan 2003
Location: Wisconsin
Posts: 3,267
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Quote:
Originally Posted by Rawknees'Turbo View Post
If referring to Ducati, there is almost no valve train noise because with the Desmodromic valve system, the opening and closing rocker arms (no traditional valve springs) are held under slight tension against the cam with a helper spring - otherwise the clatter would be very loud.

Called "lash spring" in pic.

Love the "Desmo's"......though the dry clutch more than makes up for the quiet valve train.
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Dave
'85 930 Factory Special Wishes Flachbau
Werk I Zuffenhausen 3.3l/330BHP Engine with Sonderwunsch Cams, FabSpeed Headers, Kokeln IC, Twin Plugged Electromotive Crankfire, Tial Wastegate(0.8 Bar), K27 Hybrid Turbo, Ruf Twin-tip Muffler, Fikse FM-5's 8&10x17, 8:41 R&P
Old 06-09-2017, 02:14 PM
  Pelican Parts Technical Article Directory    Reply With Quote #223 (permalink)