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Re: [Mgs] Slow cranking, was Siphoning Gas

To: <h.duinhoven@planet.nl>
Subject: Re: [Mgs] Slow cranking, was Siphoning Gas
From: "PaulHunt73" <paulhunt73@virginmedia.com>
Date: Sun, 15 Nov 2020 14:45:24 -0000 yIcS+3xlDmpFeagmiHvLKaqVisHKorPooPULp9TI22LkEA4wBrFXQJcTVRasegx6REPACAnU9aN4cNBKbY2gu4ai/klW8Sro+WEL1o2VgeTJ+yHw2DVuAmep
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Yes it is a good value, but you need to measure the voltage at the =
starter battery cable terminal and body as well.

The starter is a bit chicken and egg.  As less voltage reaches the =
starter from, say, poor connections the battery voltage will go up even =
though the cranking speed goes down, because the starter voltage has =
gone down. =20

If the circuit though the starter - which includes the solenoid on a =
pre-engaged is poor then voltage at the battery and the starter =
terminals will be good even though cranking speed is low.

If there is excessive mechanical load on the starter causing the slow =
cranking, then both battery and starter voltage will be lower even with =
a good battery.

And of course if the battery is weak then the voltage measured right on =
the battery posts will be low.

Geared starters are very good seemingly achieving the impossible of =
reducing battery drain whilst increasing cranking speeds and making =
starter easier, but are expensive.

A better bet is a modern non-geared starter which goes some way to =
achieving the benefits of a geared at a lighter weight and about half =
the price of an original.  Moss Europe for example have the geared at =
=C2=A3223, the light-weight at =C2=A388, and the OE at =C2=A3130 plus =
=C2=A315 returnable surcharge on a rebuildable unit.  The term =
'hi-torque' can be confusing, some suppliers apply that to the geared =
and some to the lightweight.  The difference between the two is that in =
the geared the solenoid with its connections is in line with the output =
pinion and the motor is on the side, instead of being the other way =
round.  Also the solenoid and the motor are very nearly the same sizes, =
again unlike the others.  A drawback with the geared, and maybe the =
light-weight, is that they don't have the rubber bumper coil boost =
contact which aids starting.  The geared may well not need it, and it =
can be replicated with an additional relay, or more easily with a =
split-charge relay with two output connections, or a diode if you know =
what you are doing.

PaulH.

----- Original Message -----=20


  =20

  I measured the voltage on the posts while cranking =3D 10,5 volts. It =
is on a digital meter, so I wonder if that=E2=80=99s a good value.

  The same value is measured on the starter ingoing post.

  So no tension loss on the electrical circuits.



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bgColor=3Dwhite=20
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<DIV><FONT size=3D2>Yes it is a good value, but you&nbsp;need to measure =
the=20
voltage at the starter battery cable terminal and body as =
well.</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>The starter is a bit chicken and egg.&nbsp; As less =
voltage=20
reaches the starter from, say, poor connections the battery voltage will =
go up=20
even though the cranking speed goes down, because the starter voltage =
has gone=20
down.&nbsp; </FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>If the circuit though the starter - which includes =
the=20
solenoid on a pre-engaged is poor then voltage at the battery and the =
starter=20
terminals will be&nbsp;good even though cranking speed is =
low.</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>If there is excessive mechanical load on the starter =
causing=20
the slow cranking, then both battery and starter voltage will be lower =
even with=20
a good battery.</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>And of course if the battery is weak then the =
voltage measured=20
right on the battery posts will be low.</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>Geared starters are very good seemingly achieving =
the=20
impossible of&nbsp;reducing battery drain whilst increasing cranking =
speeds and=20
making starter easier, but are&nbsp;expensive.</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>A better bet is a modern non-geared starter which =
goes some=20
way to achieving the benefits of a geared at a lighter weight and about =
half the=20
price of an original.&nbsp; Moss Europe for example have the geared at =
=C2=A3223, the=20
light-weight at =C2=A388, and the OE at =C2=A3130 plus =C2=A315 =
returnable surcharge on a=20
rebuildable&nbsp;unit.&nbsp; The term 'hi-torque' can be confusing, some =

suppliers apply that to the geared and some to the lightweight.&nbsp; =
The=20
difference between the two is that in the geared the solenoid with its=20
connections&nbsp;is in line with the output pinion and the motor is on =
the side,=20
instead of being the other way round.&nbsp; Also the solenoid and the =
motor are=20
very nearly the same sizes, again unlike the others.&nbsp;&nbsp;A =
drawback with=20
the geared, and maybe the light-weight, is that they don't have the =
rubber=20
bumper coil boost contact which aids starting.&nbsp; The geared may well =
not=20
need it, and it can be replicated with an additional relay, or more =
easily with=20
a split-charge relay with two output connections, or&nbsp;a diode if you =
know=20
what you are doing.</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>PaulH.</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV>----- Original Message ----- </DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; =
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  <P class=3DMsoNormal><SPAN style=3D"mso-fareast-language: EN-US" =
lang=3DEN-GB>I=20
  measured the voltage on the posts while cranking =3D 10,5 volts. It is =
on a=20
  digital meter, so I wonder if that=E2=80=99s a good =
value.<o:p></o:p></SPAN></P>
  <P class=3DMsoNormal><SPAN style=3D"mso-fareast-language: EN-US" =
lang=3DEN-GB>The=20
  same value is measured on the starter ingoing =
post.<o:p></o:p></SPAN></P>
  <P class=3DMsoNormal><SPAN style=3D"mso-fareast-language: EN-US" =
lang=3DEN-GB>So no=20
  tension loss on the electrical circuits.<o:p></o:p></SPAN></P>
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face=3DArial></FONT></o:p>&nbsp;</P></DIV></BLOCKQUOTE></BODY></HTML>

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