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mine doesn't have a rubber bottom--there is nothing there but the nut and t=
he "bolt" that the nut screws onto.
----- Original Message -----
From: john harper <ah100tech@gmail.com>
To: Michael Salter <michaelsalter@gmail.com>
Cc: Healeys <healeys@autox.team.net>
Sent: Fri, 25 Mar 2022 14:01:31 -0400 (EDT)
Subject: Re: [Healeys] Fried OD Solenoid
Simon
The overheating is likely to because the armature has not risen enough to b=
reak the contacts to the heavy pick coil. There is for a short while about =
22 amps is flowing which heats up the heavy coil to the point where it fail=
s or the heavy contacts burn out. When operating correctly only the hold cu=
rrent should be taken; perhaps 3 amps. The action is that the heavy coil i=
s needed to raise armature until when it is at the top it breaks the heavy =
current. The hold coil is sufficient to do as it says and keeps the armatur=
e in place causing the overdrive to operate.
A frequent cause of the ODs with an open frame and with a rubber bottom sto=
p is that this rubber button rots with oil or falls out. With the armature =
lower than it should be with the button in place the pick current is insuff=
icient to lift the armature with only part of it inside the coil. the coil=
will then keep taking current.=20
On mine, I have drilled and tapped the hole in which the rubber stop was fi=
tted to allow a bolt and nut to be fitted that can then be adjusted as is p=
ossible on the enclosed versions
Best regards
On Fri, 25 Mar 2022 at 15:13, Michael Salter <michaelsalter@gmail.com> wrot=
e:
Bluntly Simon, the operating valve was NOT set up correctly. The "pull" coi=
l was still being powered and drawing probably some 20 amps.New solenoid re=
quired and some careful setup.
M
On Fri., Mar. 25, 2022, 10:50 a.m. Simon Lachlan via Healeys, <healeys@auto=
x.team.net> wrote:
Since we=E2=80=99re on the OD topic=E2=80=A6.I took my MkII BT7 out the oth=
er day, first time for ages, 8 weeks+/-.Anyhow, the OD didn=E2=80=99t work.=
I=E2=80=99d been to a carpet trimmer and left my tunnel cover with him so =
access was easy=E2=80=A6=E2=80=A6The solenoid was very hot=E2=80=A6too hot =
to touch which made me suspicious. Anyhow, I did my OD electrical click-tes=
t and it failed at the first hurdle. So, I took the solenoid out and=E2=80=
=A6well, look at the picture.The plastic/nylon cover to the points and wiri=
ng was virtually welded in place. And the inside is a complete mess.So, the=
OD was rebuilt about 50 miles ago by OD Spares and I=E2=80=99m happy with =
the wiring. My question is this=E2=80=A6is there a frequent or a probable c=
ause to these fry ups?? These things check out at about =C2=A350:00 so I do=
n=E2=80=99t want to be chucking them in at regular intervals. Anything in p=
articular that I should look out for???Thanks,Simon________________________=
_______________________
Archive: http://www.team.net/pipermail/healeyshttp://autox.team.net/archive=
/healeys
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
lter@gmail.com
_______________________________________________
Archive: http://www.team.net/pipermail/healeyshttp://autox.team.net/archive=
/healeys
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
@gmail.com
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<html><head><style> body {height: 100%; color:#000000; font-size:12pt; font=
-family:arial, helvetica, sans-serif;}</style></head><body><div>mine doesn'=
t have a rubber bottom--there is nothing there but the nut and the "bolt" t=
hat the nut screws onto.</div><div><br data-mce-bogus=3D"1"></div><div><br =
data-mce-bogus=3D"1"></div><div><br></div><div>----- Original Message -----=
<br>From: john harper <ah100tech@gmail.com><br>To: Michael Salter <=
;michaelsalter@gmail.com><br>Cc: Healeys <healeys@autox.team.net><=
br>Sent: Fri, 25 Mar 2022 14:01:31 -0400 (EDT)<br>Subject: Re: [Healeys] Fr=
ied OD Solenoid<br></div><div><br></div><div dir=3D"ltr">Simon<div><br></di=
v><div>The overheating is likely to because the armature has not risen enou=
gh to break the contacts to the heavy pick coil. There is for a short =
while about 22 amps is flowing which heats up the heavy coil to the point w=
here it fails or the heavy contacts burn out. When operating correctly only=
the hold current should be taken; perhaps 3 amps. The acti=
on is that the heavy coil is needed to raise armature until when it is=
at the top it breaks the heavy current. The hold coil is sufficient to do =
as it says and keeps the armature in place causing the overdrive to op=
erate.</div><div><br></div><div>A frequent cause of the ODs with an op=
en frame and with a rubber bottom stop is that this rubber button rots with=
oil or falls out. With the armature lower than it should be with the butto=
n in place the pick current is insufficient to lift the armature =
with only part of it inside the coil. the coil will then keep taking =
current. </div><div><br></div><div>On mine, I have drilled and tapped =
the hole in which the rubber stop was fitted to allow a bolt and nut t=
o be fitted that can then be adjusted as is possible on the enclosed versio=
ns</div><div><br></div><div>Best regards</div></div><div><br></div><div cla=
ss=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Fri, 25 Mar 202=
2 at 15:13, Michael Salter <<a href=3D"mailto:michaelsalter@gmail.com"; t=
arget=3D"_blank" data-mce-href=3D"mailto:michaelsalter@gmail.com";>michaelsa=
lter@gmail.com</a>> wrote:<br></div><blockquote class=3D"gmail_quote" st=
yle=3D"margin: 0px 0px 0px 0.8ex; border-left: 1px solid #cccccc; padding-l=
eft: 1ex;" data-mce-style=3D"margin: 0px 0px 0px 0.8ex; border-left: 1px so=
lid #cccccc; padding-left: 1ex;"><div dir=3D"auto">Bluntly Simon, the opera=
ting valve was NOT set up correctly. <div dir=3D"auto">The "pull" coil=
was still being powered and drawing probably some 20 amps.</div><div dir=
=3D"auto">New solenoid required and some careful setup.</div><div dir=3D"au=
to"><br></div><div dir=3D"auto">M</div></div><br><div class=3D"gmail_quote"=
><div dir=3D"ltr" class=3D"gmail_attr">On Fri., Mar. 25, 2022, 10:50 a.m. S=
imon Lachlan via Healeys, <<a href=3D"mailto:healeys@autox.team.net"; tar=
get=3D"_blank" data-mce-href=3D"mailto:healeys@autox.team.net";>healeys@auto=
x.team.net</a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=
=3D"margin: 0px 0px 0px 0.8ex; border-left: 1px solid #cccccc; padding-left=
: 1ex;" data-mce-style=3D"margin: 0px 0px 0px 0.8ex; border-left: 1px solid=
#cccccc; padding-left: 1ex;"><div lang=3D"EN-GB"><div><p class=3D"MsoNorma=
l">Since we=E2=80=99re on the OD topic=E2=80=A6.<u></u><u></u></p><p class=
=3D"MsoNormal">I took my MkII BT7 out the other day, first time for ages, 8=
weeks+/-.<u></u><u></u></p><p class=3D"MsoNormal">Anyhow, the OD didn=E2=
=80=99t work. I=E2=80=99d been to a carpet trimmer and left my tunnel cover=
with him so access was easy=E2=80=A6=E2=80=A6<u></u><u></u></p><p class=3D=
"MsoNormal">The solenoid was very hot=E2=80=A6too hot to touch which made m=
e suspicious. Anyhow, I did my OD electrical click-test and it failed at th=
e first hurdle. So, I took the solenoid out and=E2=80=A6well, look at the p=
icture.<u></u><u></u></p><p class=3D"MsoNormal">The plastic/nylon cover to =
the points and wiring was virtually welded in place. And the inside is a co=
mplete mess.<u></u><u></u></p><p class=3D"MsoNormal">So, the OD was rebuilt=
about 50 miles ago by OD Spares and I=E2=80=99m happy with the wiring. My =
question is this=E2=80=A6is there a frequent or a probable cause to these f=
ry ups?? These things check out at about =C2=A350:00 so I don=E2=80=99t wan=
t to be chucking them in at regular intervals. Anything in particular that =
I should look out for???<u></u><u></u></p><p class=3D"MsoNormal">Thanks,<u>=
</u><u></u></p><p class=3D"MsoNormal">Simon<u></u><u></u></p></div></div>__=
_____________________________________________<br><div><br></div>Support Tea=
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_______________________________________________
Archive: http://www.team.net/pipermail/healeys
http://autox.team.net/archive/healeys
Healeys@autox.team.net
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