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Subject:Re: Gear driven, timing belts, chains, etc. NVC
From:Benny boy
Date:Tue, 26 Jun 2007 11:40:33 -0400

Ducati need frequent (3k to 5k miles) adj. They are nice exotic V-Twin
bike... period.

My Suzuki SV1000S V-Twin goes a 20k miles  between valve adj. produce way
more power and torque for the same amounth of CC.

The RC51 is also an awsome V-Twin, sadly, it's run way to hot for the legs.

They all use T-Chain, but i fitted mine with an external T-Belt :-), a Subi
one...

Ben

On Tue, 26 Jun 2007 00:46:58 -0400, Karl Mullendore
<groups@WESTYVENTURES.COM> wrote:

>What rock have you guys been sleeping under? :-) Ducati has been continually
>using desmodromic valvetrain for years. Some kinda linkage?? How about two
>rocker arms, one opens, one closes, both running on the same camshaft, so
>they can't possibly get out of sync. And they still use this today, works
>great. BTW, the bevel-gear shaft? Gone, MANY years ago, like the early
>'80's, replaced by a wonderfully reliable two-belt system. Something about
>Italian metallurgy, but my 1992 907ie has always had the valves spot-on
>every time I've checked them in the past 30,000 miles. In fact, the bike has
>not needed anything other than oil changes, tires, and a chain, in addition
>to the regular tune-ups and belts.
>
>On Tue, 26 Jun 2007 14:01:11 +1200, Andrew Grebneff
><andrew.grebneff@STONEBOW.OTAGO.AC.NZ> wrote:
>
>>>   Ducatti had a desmodromic valve train..One tower shaft driven gear
>>> between the cylinders with some kinda linkage to both open and close
>>> each valve...no springs..
>>
>>Yep. Imagine what happens ig the open & close cam settings interfere with
>>one another... no wonder Ducatis are normally buggered before the warranty
>>period runs out (a local used-bike importer refiuses to touch 'em for this
>>reason). I wonder why Ducati dropped desmos...

Ducati