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Re: [TR] TR3A radiator re-core

To: <Triumphs@autox.team.net>
Subject: Re: [TR] TR3A radiator re-core
From: "Karl Vacek" <kvacek@ameritech.net>
Date: Tue, 6 Jan 2009 20:34:41 -0600
>   I  do recommend keeping all of your fingers and your thumb on the same
>   side  of  the crank handle though (don't grab it like a baseball bat).
>   Sometimes  there's a bit of a kickback and if your thumb's in the way,
>   well...


Here's the real story on keeping your thumb on the same side as your 
fingers.  I've owned a 1916 Model T Ford for 40 years - and starters weren't 
even available as an option until 1917.

When there's a kickback, that crank can spin like a propeller for a second 
or so - really scary especially if you've never seen it before, or if your 
hand and wrist are in the middle of the spinning steel.  Of course, you're 
doing something wrong if there's a kickback -- but they can and sometimes do 
happen.

As long as you're pulling UP on the crank handle, if there's a kickback (the 
result of too-early spark) the crank will pull away from you and your hand. 
Having your fingers and thumb all on one side (the outside) lessens the 
strength of your grip and helps the crank throw your hand out and away.  But 
even if you wrap your thumb around the other side, chances are you'll be OK.

The really bad problem - and the usual cause of broken thumbs, wrists, arms, 
shoulders, etc. - is PUSHING down on the crank.  DON'T EVER PUSH DOWN ON THE 
CRANK.  If you push and there's a kickback, the crank (and engine) is 
pushing back against you.  Even if your fingers and thumb are on the same 
side - even if they're on the outside - you're pushing down into that crank 
that's pushing back at you.  It's stronger than you and all your bones. 
People have even literally been launched into the air by a kicking crank 
when they've pushed down and had a kickback.

Soooo...  To crank a car, only pull up.  Try to set it up so the crank is at 
the 7:30 to 8:00 position or so, and pull up about 90 degrees.  Have your 
fingers and thumb on the outside of the circle described by the crank 
handle, so if it kicks back your hand will be flung AWAY.  Don't ever try to 
crank round-and-round - just pull up a quarter turn or so at a time.  If the 
engine is in tune it'll start that way and you'll be safe.

A car is really nothing to crank start.  Try flipping a (sharp trailing 
edge) metal airplane propeller in the winter time.  That really feels nice 
when it kicks back against your frozen hands   ;-)

Good luck, and be careful !!
Karl


PS - There are times you need to crank a Model T round-and-round, 
specifically to crank out a flood.  When doing that you open the throttle 
all the way, make triple-sure the ignition is off and the spark is all the 
way retarded, and give a few tentative test pulls before spinning it all the 
way around a few turns.  In a Triumph you probably won't ever need to do 
that, and you can clear the flood by pulling the plugs too.  In a TR you 
don't have any overt control over the ignition timing except to turn it off. 
Please don't even try it. 
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