On Wed, 09 Sep 2009 09:11:50 -0400, Jim wrote:

Richard Casady wrote:
On Mon, 07 Sep 2009 11:30:57 -0400, Jim wrote:

JohnH wrote:
After needing a jump start yesterday, I've decided to invest in one of
these:

http://tinyurl.com/lfnhqy

I'd appreciate any comments on the good, bad, or ugly. Thanks!
They work. Sort of. They help a tired battery start a car.

I had a mustang convertable with about ten bulbs that came on if the
door was even slightly ajar. It would kill the battery stone dead in
less than an hour. I hooked up a ten amp charger and in the five
seconds it took to walk to the door, reach in through the window and
twist the key it had enough juice to start. It doesn't necessarily
take much as anyone who ever started an aircraft engine by pulling on
the prop would tell you.

Casady

Depends on the vehicle. My Gold Wing would roll over to beat the band
but wouldn't start due to low voltage. A jump starter wasn't enough to
male the electronic controls come alive. Other vehicles will start if
you can get them to roll over twice at a slow crank.

My experience with kick starters and propellers, not to mention a
Graymarine 109 six with the crank, is that one compression stroke will
do.

Casady