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Posted by Don T on August 14, 2009, 4:24 am

Nah.  Blowers were shaft driven off a gear set on the rear of the engine.
One fairly common problem with the Jimmy 6-71 was for the shaft to break and
unless the mechanic had seen that particular problem before he might spend
2 - 3 hours finding out that the blower wasn't turning with the engine. It
would start but wouldn't pull the hat off your head before it died from lack
of air.

 Just in case you want to argue the point look here:



Don Thompson

Stolen from Dan:  "Just thinking, besides, I watched 2 dogs mating once,
and that makes me an expert. "

There is nothing more frightening than active ignorance.

It is a worthy thing to fight for one's freedom;
it is another sight finer to fight for another man's.
~Mark Twain

Posted by David Ornitz on August 16, 2009, 1:05 pm

ery important you get a hold of me ASAP. Thanks.

Posted by You on August 14, 2009, 5:38 pm
  clare@snyder.on.ca wrote:

I don't know what Scream'en Jimmys you have ever worked on but ALL
the one's I have worked on, for the last 3 decades, are Driven off
the Cam Gear Train thru the quill shaft.......  NEVER seen a belt driven
DD Blower on anything but a Dragster.......

Posted by clare on August 15, 2009, 1:48 am

 Sorry, you are right - the jimmies were gear driven. I should have
said "engine driven" instead of belt drivem

The 6v71t and ta, as well as the 8v71t and ta were turboed 2 strokes

Anyway, the new DD15 series is also "turbo compounded", although a 4

Posted by clare on August 14, 2009, 1:51 am
 On Thu, 13 Aug 2009 08:17:00 -0400, user@domain.invalid wrote:

Not ALL 2 strokes, but any two stroke that crankcase scavenges and
uses total loss lubrication sure is.

A valve timed, supercharged pressure lubricated 2 stroke engine could
be VERY efficient, and very clean with todays engine control
electronics. Particularly with direct gasoline injection.

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