c. Clutch Driving Spider.
Number required
-------------------------------------------------------------------------- 2.
Material
-------------------------------------------------------------------------- Semisteel.
Rough weight
-------------------------------------------------------------------------- 50 lb.
Finished weight
-------------------------------------------------------------------------- 29.12 lb.
Outside diameter
-------------------------------------------------------------------------- 1111/16.
Number of teeth
-------------------------------------------------------------------------- 63.
Pitch
-------------------------------------------------------------------------- 6/8, 20 angle.
Depth of teeth
-------------------------------------------------------------------------- 0.3185.
Bore
-------------------------------------------------------------------------- 3.189-3.188.
Keyway width
-------------------------------------------------------------------------- 0.750-0.749.
Shaft outside diameter, small ------------------------------------------------------------------- 4.241-4.240.
medium --------------------------------------------------------------- 4.2520-4.2530.
large ------------------------------------------------------------------- 4.876-4.877.
Set screw hole
-------------------------------------------------------------------------- -18 pipe tap, 2%4
drill.
d. Double Speed Pinion.
Number required
-------------------------------------------------------------------------- 1.
Material
-------------------------------------------------------------------------- A5140 fine grain
-------------------------------------------------------------------------- HRS.
Rough weight
-------------------------------------------------------------------------- 24 lb.
Finished weight
-------------------------------------------------------------------------- 9.5 lb.
Outside diameter, large -------------------------------------------------------------------------- 5.900-5.896.
Number of teeth
-------------------------------------------------------------------------- 22.
Pitch
-------------------------------------------------------------------------- 4/5
Depth of teeth
-------------------------------------------------------------------------- 0.5393.
Outside diameter, small -------------------------------------------------------------------------- 3.650-3.645.
Number of teeth
-------------------------------------------------------------------------- 13.
Pitch
-------------------------------------------------------------------------- 4/5.
Depth of teeth
-------------------------------------------------------------------------- 0.5393.
Bore
-------------------------------------------------------------------------- 1.5625-1.5620.
Overall width
-------------------------------------------------------------------------- 2 3/4
Keyway width
-------------------------------------------------------------------------- 0.500-0.499.
Treatment
-------------------------------------------------------------------------- Heat to 1525-1550.
quench in oil,
draw; Rockwell
"C"-34-38.
e. Fast Gear.
Number required ------------------------------------------------------------------------------------ 1.
Material------------------------------------------------------------------------------------------------ SAE 5140 steel forging
Rough weight ---------------------------------------------------------------------------------------- 42 lb.
Finished weight-------------------------------------------------------------------------------------- 17.4 lb.
Outside diameter------------------------------------------------------------------------------------ 9.900.
Number of teeth ------------------------------------------------------------------------------------- 38.
Pitch---------------------------------------------------------------------------------------------------- 4/5
Depth of teeth---------------------------------------------------------------------------------------- 0.5393.
Bore before heat treatment ----------------------------------------------------------------------- 3.2000-3.1995.
Bore after heat treatment ------------------------------------------------------------------------- 3.2500-3.2495.
Number of holes ------------------------------------------------------------------------------------ 16.
Hole diameter---------------------------------------------------------------------------------------- 27/64 drill 11/16deep.
Hole spacing ----------------------------------------------------------------------------------------- Equal; spot with 3/4
drill 3/32 deep.
355
