Motor Mount for the Sprite

This is a neat trick. After the motor and transmission were joined and placed into the engine compartment, the motor just floats in the engine bay. 

The trick is we used a really secure stack of lumber scraps to position the transmission in the same alignment as when it mated to a gas engine.  We defined the correct position of the motor based on the alignment of the transmission.

There are three M12 bolts on the front of this motor.  Trying to purchase the correct bolts, I learned that there are three pitches of screw threads for metric bolts.  This motor takes the extra fine pitch, for maximum bolt shear strength. 

This structure matches the bolt pattern on the front of the motor.  Don't worry, we come back and give it full welds after we check for fitment.

And it does fit. These bolts were merely fine thread, and won't go in any more than a quarter turn.

This view from above shows that the gap is closing, and more importantly we have a weldable surface to extend the structure.

 

Ears are welded on and reinforced. The ears will serve as a mounting surface for a pair of rubber dampers. Even through electric motors have far less vibration and rumble than the gas engine, a rigid mount to the vehicle's frame is not desirable.

Here the rubber is present, as well as a structure that we made to reach the stock motor mounting holes in the car.  We did this because drilling the fewest number of holes in the car is desirable, and the existing mount location is already engineered to be strong.

Here is the bottom view of the motor mounting bracket.

The fit looks good.  And we have the proper M12 x 1.25 exrta fine pitch bolts installed.