The "Build" - Final Keyway Design - Part 1

 

I made a morning appointment and today took all of the parts and adapters to Pioneer Conversions for the official “build” of the drive train.   As in all projects, there are speed bumps.  Initially, the hub adapter would not slide fully onto the shaft, but Pioneer expertly pressed the bronze bushing a little further into the hub and it seated perfectly.  Then it was realized that the end plate on the Warp 11 motor that I purchased was an older design with a smaller 1.400 inch center opening.  This compares to the newer versions of the Warp 11 that have a 2.300 center opening.  Since the hub adapter as received has a diameter of 2.00 inches and it was designed to be recessed into the face of the newer version of the Warp 11, the build thus screeched to a halt in less than 45 minutes!!

 
It is frequently true that a man’s luck is proportional to the number of people that they have the privilege of knowing.  In my case, George Hamstra of NetGain Motors (the creator of the Warp  motors), had agreed to meet with me at Pioneer Conversions to watch the build.  He immediately got on the phone and confirmed that the modern style motor end plate was in stock at the factory, which was just a short drive from Pioneer Conversions.  We got in the car, drove to the factory and picked up the replacement end plate, a quick lunch, but, by the time we returned to Pioneer Conversions, it was too late to continue work.  So, I needed to reschedule.
                    

                               Final Design of the 1992 BMW 325i Drive Train Assembly

Moving from left to right:  the armature shaft passes thru the bearing, then thru the 2.300 inch opening of the Warp 11, followed by insertion into the hub adapter.  The hub adapter flange is drilled to accommodate the flywheel.  Located on the spline and sandwiched between the flywheel and the pressure plate is the clutch disk.  To the immediate left of the spline, the pilot of the transmission rests within the bronze bushing.  The critical dimension is marked and labeled at 0.795 inches.  To the far right is a crude rendition of the outline of the Getrag transmission housing.  Please feel free to contact us if you have any questions about the drawing.