Jake Brakes & dynos

[Doug Rorem]

>From: "Robert J. Harris" <bob at bobthecomputerguy.com>
>>Mark, DYI_EFI
>>
>>EMF retarders have been around for at least 15 years on various
>>heavy vehicles like trucks, buss's etc.  Used one's should be
>>available in heavy vehicle boneyanrds. Newer ones are smaller,
>>lighter and cost more. Prices vary by customer attitude, time
>>of day, need for commission and just for the fun of it - typical
>>boneyard pricing structure.  Old city buss's typically have
>>them - Jake Brake's suck in rich neighborhoods.

 The Jake Brake (Jacobs engine brake) on trucks don't work by EMF. It
causes the engine to become an air compressor when the driver engages
it (typically when they take their foot completely off the throttle). They
have a Jacobs driveline brake which does work by EMF. Their WWW site:

http://www.jakebrake.com

>>
>>They fit in the driveline - after the transmission - sort of like an
>>overdirve transmission kit.  Will post the cost and dimensions
>>when I get them.  Sorry I missed the opening parts of the
>>dyno thread.
>>
>>
>>
>>Remember the Reichstag - don' let Billie repeat it
>>

--
Doug Rorem
University of Illinois at Chicago         (312)-996-5439  [voice]
EECS Department  RM 1120                  (312)-413-1065  [fax]
851 S. Morgan Street                      (708)-996-2226  [pager]
Chicago, IL 60607-7053                    rorem at uic.edu