[Shotimes] Clarification on: SHO cranking but not starting
Tom Teixeira
tjteixeira@earthlink.net
Thu, 4 Mar 2004 11:01:56 -0500
At 10:00 AM -0500 3/4/04, James F. Ryan III wrote:
>To para-phrase my previous e-mail:
>
>ALL STARTER MOTORS HAVE A SOLENOID INSIDE THE MOTOR. Your engine couldn't
>start if it wasn't there.
Actually, not true. I have an old flathead powered pickup truck.
There's no solenoid inside the starter motor, and in stock form, no
starter relay either. The starter switch was capable of handling high
current, and is actually mounted on the floorboards, like headlight
dimmer switches from the 50's, 60's and 70's.
The starter motor engages the flywheel using a "Bendix drive". This
is a purely mechanical device that moves a gear along a spiral shaft
when the starter motor starts up, and moves the gear back once the
engine is running and spinning faster than the starter motor.
http://www.indiacar.com/index2.asp?pagename=http://www.indiacar.com/infobank/battery1_od.htm
shows how the Bendix drive works, and also shows starter motors with
the starter relay on the starter (like Gen 2), and separate (like Gen
1).
--
Tom Teixeira mailto:tjteixeira@earthlink.net
Blue 94 5-speed 127K http://world.std.com/~tjt