Today's Message Index:
----------------------
1. 06:49 AM - Safety wire? (Grant Corriveau)
2. 12:12 PM - AOPA call to action on Washington, D.C., ADIZ (John Loram)
3. 09:32 PM - Starter not disengaging (HCRV6@comcast.net)
4. 09:59 PM - Re: Starter not disengaging (923te)
Message 1
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--> Engines-List message posted by: Grant Corriveau <grantc@ca.inter.net>
> Engines-List message posted by: Gary Casey <glcasey@adelphia.net>
> Some observations from a non-professional outside observer:
>
> Some aircraft bolts (not all by any means) have some sort of
> retention device and others don't. Same is true in the automotive
> world.
...
Gary,
Thanks -- that was a very helpful summary of basic principles involved.
That's what I like to discover, so I can make better decisions in the many
cases where there is no specific guidance. This arises often in the
amateur-building process, especially with an auto-conversion engine.
--
Grant Corriveau
C-GHTF / HDS / CAM100
Message 2
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| Subject: | AOPA call to action on Washington, D.C., ADIZ |
--> Engines-List message posted by: "John Loram" <johnl@loram.org>
http://www.aopa.org/adizalert/
Take 15 minutes to make you voice heard! -john-
Message 3
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| Subject: | Starter not disengaging |
INNOCENT GLOBAL 0.0000 1.0000 -4.4912
1.53 RCVD_NUMERIC_HELO Received: contains an IP address used for HELO
--> Engines-List message posted by: HCRV6@comcast.net
Hey guys, I should have guessed things were going too well. At 146 hours the Sky
Tec starter pinion gear on my factory new (from Van's) O-360 A1A has started
to hang up for a second or two on each engine start. I'd sure appreciate any
insight anyone can provide as to what is causing this and what the fix is.
--
Harry Crosby
RV-6 N16CX, 146 hours
Hey guys, I should have guessed things were going too well. At 146 hours the Sky
Tec starter pinion gear on my factory new (from Van's) O-360 A1A has started
to hang up for a second or two on each engine start. I'd sure appreciate any
insight anyone can provide as to what is causing this and what the fix is.
--
Harry Crosby
RV-6 N16CX, 146 hours
Message 4
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| Subject: | Re: Starter not disengaging |
--> Engines-List message posted by: "923te" <923te@cox.net>
Here is a fix and an explanation from a Skytek person:
Lots of folks with experimental aircraft use the solenoid on our starter as
the only starter relay, running the push-button to the S terminal of our
solenoid and removing the jumper we supply. This eliminates the 'after
run'.
The Sky-Tec permanent magnet starters like your 149-24LS act as generators
while they spin down after you release the start switch. During this time,
the flywheel spins the one-way clutch behind the pinion gear. The clutch
prevents the engine from spinning the starter armature while it coasts to a
stop. While the armature is still spinning and coasting down, the power it
generated causes the engagement solenioid to hold in. When the armature
spins down to a slow enough point, the solenoid releases and the pinion
disengages from the ring. The hold-in time depends on the starter RPM and
the friction in the starter, which probably becomes less as the starter gets
used. This time ranges from unobservable to about 8 seconds, in our
experience. This is normal operation and is not a problem.
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