Do some radial engine planes have a two-speed starter motor?
There seems to be only one starter speed:


  Proper sequence for starting radial engines...DC-6B style, with P&amp;W
  R-2800's.
  
  
  Engage start and start safety switches. 
  Rotate thru 9 blades. 
  While continuing to rotate the engine with the starter, engage primer and
  ignition boost switches, and at the same time, select magnetos to
  'both'. 
  When engine fires, continue starting with the fuel primer
  engaged, releasing the start and start safety switches. 
  Slowly move
  mixture control to the autolean position, then release fuel prime
  switch. 
  Engine continues to run (hopefully). 
  Taxi in autolean, until
  engine run-up desired. 
  Complete run-up and propellor checks in
  autorich. 
  Return mixture to autolean. 
  Prior to takeoff, ensure engine
  mixture controls are in autorich (very important).
  
  
  Have a pleasant day, thereafter (hopefully). ;-)
  
  DC-3 about the same, except...
  
  
  use autorich for all ground ops. 
  Engine
  type, P&amp;W R-1830-92. 
  Curtis Wright engines...can't remember.
  
  
  Stratocruiser, same as the DC-6B. DC-7 and Lockheed 1649, same also,
  as the DC-6B.
  
  NB. Operating in autolean helps to prevent plug fouling while on the
  ground.


[Posted by 411A on May 18th, 2008 at pprune.org]