Today's Message Index:
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1. 05:35 AM - Re: Re: LED wig-wag (Robert L. Nuckolls, III)
2. 06:05 AM - Re: LED wig-wag (Eric M. Jones)
3. 11:33 AM - Re: Re: S702-1 Intermittent Duty Starter Contactor...pedigree (Jeff Page)
4. 12:40 PM - Starter engaged warning lights (Robert L. Nuckolls, III)
Message 1
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At 02:04 PM 2/17/2016, you wrote:
>
>Bob,
> Yes I am. What is your email?
I tried sending you the offer at your
email address in the header but it bounced
as no-such-user-name-found.
You can email me using the address in the
header of this message.
Bob . . .
Message 2
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Automotive conversion WWs depend on the lamp filament resistance to tell the user
if a lamp has failed. Perihelion Design's WWs don't use this system. We have
sold WWs in two types AND in 28V types for a decade. I even sell 2X frequency
Europa WWs for a single lamp. They work fine with LEDs and HIDs and Incandescents.
The WW(D) includes the switch (and I now include a free switch guard!).
The WW(C) is without the switch.
Eric
--------
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones(at)charter.net
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=452953#452953
Attachments:
http://forums.matronics.com//files/wigwag_module_d1manual_105.pdf
http://forums.matronics.com//files/wigwag_module_manual_c_200.pdf
Message 3
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| Subject: | Re: S702-1 Intermittent Duty Starter Contactor...pedigree |
Some were mentioning using the I terminal to indicate a contractor
stuck, and thus the starter engaged, which would not indicate a
mechanical malfunction that was spinning the starter.
This is just an idea that someone with more start motor experience
than I can tell us if it is workable. What about wiring an indicator
to the feed from the contactor to the starter. Perhaps the rotating
starter would act as a generator to power the indicator. This would
not work for starters that had another built in contactor, but perhaps
there are starters this would work for ?
Although relatively rare, having the starter and flywheel teeth jam
and break in flight might make for a "stormy night" story :-(
Jeff Page
Dream Aircraft Tundra #10
Message 4
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| Subject: | Starter engaged warning lights |
>
>Although relatively rare, having the starter and flywheel teeth jam
>and break in flight might make for a "stormy night" story :-(
Not sure how much of a risk this is.
Every starter I'm aware of has an over-running
clutch built onto the pinion gear shaft. Hangar
myths about stuck pinions back driving a starter
and turning it into a generator are without
merit. Further, the solenoid/contactor configuration
of choice features a robust disengagement mechanism.
The only 'unintentional engagements' I've
heard about over the last 20 years have
involved stuck contactors that kept the pinion
gear electrically engaged. One such case involved
a aerobatic performance airplane at OSH where
the entire routine was performed with the starter
engaged.
While chewed up ring gears and pinons are ugly,
they don't represent much of a hazard to the engine
or airplane.
The strongest prophylactic against these events
are a strong battery and a modern, stick-resistant
contactor.
Most mechanical risk for pinion gear retraction
failure have foundation in poor maintenance . . .
a 'hard stick' is going to be preceded by a series
of tentative sticks. Just keep the shaft clean
and watch the pinion gear teeth for changes
in wear patterns.
Bob . . .
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