RICE MARINE, INC.
 YOUR MARINE TRANSMISSION SOURCE FOR SALES & SERVICE
VELVET DRIVE, ZF/HURTH, PARAGON, KANZAKI, WALTER V-DRIVE

FAQ

FREQUENTLY ASKED QUESTIONS

           General FAQ's
          
   1.  Q. I don't have a tag on my transmission, how can I tell what it is?
        A. Go to our section on Determining Models

   2.  Q. My transmission fluid smells burnt and is discolored should I have the transmission replaced?
        A.  After rebuilding hundreds of transmissions of various makes we have found that in every case where
             the fluid smells burnt or is at all discolored the clutch plates have slipped and are worn or even warped
             out of shape.  There is no way short of replacing these plates during a rebuild, or replacing the whole
             transmission, that this condition does not lead to total clutch failure in a short time.  The clutch pack
             will continue to slip and generate heat leading in the end to the plates welding themselves together.
             In addition, pieces may be lost off the plates during this heating process that damage the other parts
             of the transmission.
   3.  Q. My transmission fluid looks like milkshake, what happened?
        A.  Water leaking into the transmission via the cooler makes it look like either strawberry milkshake if ATF
             is used, or vanilla milkshake if oil is used.  Just draining the transmission and refilling it will not remove
             all the water no matter how many times you do it!   Some water will always remain in the clutch cylinders
             and low spots in the case. As quickly as possible have the transmission disassembled and cleaned ASAP.
             If it cannot be serviced quickly then
drain the old fluid and refill as full as possible with ATF, motor oil,
             kerosene, diesel fuel or paint thinner to prevent rust till service can be obtained.  
            

   4.  Q. Why can't I use an automatic car transmission in my boat?
        A.  All the push developed by the propeller is applied to the output bearing of the marine transmission.  It is
             designed to handle this force.  A car or truck transmission is not designed to have any push applied to
             the output bearing


   5.  Q. What if I install a bearing between the car transmission and the prop shaft?
        A.  I haven't tried it but I've been told that an automatic transmission will go up through the gears then start
             to shift back and forth between the top two gears.  If using auto transmissions was a viable option then
             I'm sure boat builders would have gone to them long ago as they were cheaper than boat transmissions!



   6.  Q. How about using a stick shift auto transmission?
        A.  Consider the linkage required both for the clutch and the shift.  Such an arrangement would be difficult on
             anything larger than a ski boat.


   7.  Q. What is meant by Left Hand (LH) and Right Hand (RH) rotation?
        A.  An engine that is turning counter-clockwise from the rear, the top of the flywheel turns to the left,
             is called a Left Hand engine.  It is also called automobile rotation or standard rotation. 
             An engine that turns clockwise from the rear, the top of the flywheel turns to the right, is called a
             Right Hand (RH) engine.  This is also called marine rotation or counter rotation


   8.  Q. Why is the replacement of the fluid cooler required by the warranty?
        A. Every time the engine is stopped the cooler flow stops and any particles in the fluid settle out.  some
            particles clump together and are not picked up when the fluid starts to move again.  Because of baffles
            built into almost all fluid coolers total clean out is almost impossible.  Leftover particles in the cooler
            can break loose and go through the transmission.  Also, over time corrosion and scale can build up on
            the inside of the cooler and reduce heat transfer. 




   A. FAQ's about Velvet Drive & Borg-Warner Marine Transmissions:

       Q. Is it true that you can run Borg-Warner/Velvet Drive marine transmissions with either LH or RH 
            engines?
       A. Some models will operate with either LH or RH engines if the pump is set to match the engine
           rotation.  Some models are made to only operate with LH engines.  See the Rotation Guide page
           for a list of models that will and will not work with both rotations.

       Q. How can I make my Velvet Drive transmission reverse its output rotation in forward?
       A.  You can't on models 71C, 72C, 1017, 1018, 1013, 1014, 1004 & 1005. The reason is that, except
            for certain models specifically designed to reverse the output rotation in forward, the reverse gear
            is not made to handle speed higher than idle RPM.  
Reversal or non-reversal of rotation between
            input and output is due to the internal layout of the gear reduction section and it is not changeable
            without changing the reverse pinion carrier and/or all the reduction gearing.  This option is normally
            more expensive than replacing the transmission.  See the Rotation Guide page or call us for specific
            rotation information.

       Q. I have a sailboat, will it hurt my Velvet Drive transmission to free-wheel when I am under sail?
       A. Free-wheeling is not recommended. All Velvet Drive / Borg-Warner Marine Transmissions require 
           the engine to be running to deliver lubrication to the various bearing and gears.