Today's Message Index:
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1. 03:26 PM - Shower of Sparks Question (John)
2. 03:47 PM - Z-Zero, A Simple Basic Electrical System (user9253)
3. 07:30 PM - Re: Shower of Sparks Question (Stuart Hutchison)
4. 07:31 PM - Re: Shower of Sparks Question (Dave Saylor)
Message 1
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| Subject: | Shower of Sparks Question |
Hello
I currently have a Bendix Shower of Sparks Magneto on the left side of my RV6A
and a PMag on the right. The Bendix is in need of an overhaul and I am undecided
whether to do this, or purchase another PMag. In the meantime, I have a
non-impulse Bendix mag that I was thinking of installing as a temporary solution.
I would of course disable/remove the buzz box if this were to happen.
My questions are:
1) Does a mag care which side of the engine it is on, as this non-impulse mag
was originally on the right side and will now be on the left?
2)The ignition switch has a jumper designed to ground the right Mag during start,
but was removed when the PMag was installed. As such, can a jumper from the
aforementioned ground be connected to the proposed non-impulse left mag so
that it will ground during start?
Although a bit more work, it may be prudent to switch the PMag to the left side
and put the non-impulse mag on the right.
Thanks,
John
RV6A
Message 2
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| Subject: | Z-Zero, A Simple Basic Electrical System |
Bob N., how about publishing the simplest electrical system possible?
Over the years, builders have requested extra features like an E-Bus, dual
alternators, dual batteries. brownout protection and etc. And you have
accommodated with architecture that meets those goals.
But what about the little guy who wants something simple and safe without
all of the bells and whistles? He only wants to fly Day VFR. He doesn't
believe the old wives' tale about needing to shut off avionics during engine
start. His engine is not electrically dependent. He doesn't need a battery
bus or avionics bus. A single battery provides a backup for the single
alternator. The main power bus is as reliable as prop bolts. He won't need a
battery bus because there is no clock or baggage compartment light. His
modern EFIS shows the exact time from GPS. The EFIS also has a HOBBS
meter. His baggage compartment light was purchased at Walmart for $10.
It turns on via sensing motion and its LEDs are powered by AAA batteries.
The EFIS has its own internal backup battery. Over voltage and under
voltage warning lights won't be needed because the EFIS has those features
too. Fuses will be used to keep it simple and to save money. He will use one
circuit breaker for over voltage protection.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=513594#513594
Message 3
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| Subject: | Re: Shower of Sparks Question |
G=99day John.
I have shower of sparks too.
Someone may pipe up with a good advice, but FWIW:
Q1. No, I don=99t believe the mags care which side they=99
re on, but you do. Correct, once the LHS shower of sparks mag is
removed the advance/retard breakers aren=99t in play, nor the
induction vibrator (as you say) which is energised on when =99start
=99 is engaged.
Q2. Yes you could and should swap the grounding lead over if you put
the non-impulse coupled mag on the left to stop it causing kick-back (a
hazard and bad for the engine). This assumes the PMag has variable
timing and the grunt to produce a hot spark at low RPM (I know it=99
s electric, but don=99t know how they function during starting).
However, I wouldn=99t leave it that way. If/when the shower of
sparks is reinstalled I=99d put it back on the left so the system
architecture is logical (depending on whether you have independent
switches for the mags or rotary switch).
Kind regards, Stuart
> On 21 May 2024, at 8:25=AFAM, John <rv6a@rogers.com> wrote:
>
>
> =EF=BBHello
> I currently have a =9CBendix=9D Shower of Sparks Magneto
on the left side of my RV6A and a PMag on the right. The Bendix is in
need of an overhaul and I am undecided whether to do this, or purchase
another PMag. In the meantime, I have a non-impulse Bendix mag that I
was thinking of installing as a temporary solution. I would of course
disable/remove the buzz box if this were to happen.
> My questions are:
> 1) Does a mag care which side of the engine it is on, as this
non-impulse mag was originally on the right side and will now be on the
left?
>
> 2)The ignition switch has a jumper designed to ground the right Mag
during start, but was removed when the PMag was installed. As such, can
a jumper from the aforementioned ground be connected to the proposed
non-impulse left mag so that it will ground during start?
>
> Although a bit more work, it may be prudent to switch the PMag to the
left side and put the non-impulse mag on the right.
>
> Thanks,
> John
> RV6A
>
>
>
>
>
>
Message 4
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| Subject: | Re: Shower of Sparks Question |
John,
The mag doesn't care which side it's on.
Correct, you don't want it to fire during the start. If the jumper
accomplishes that, it should be fine.
Might wanna make good and sure you're grounding the main points and not the
starting points.
I'm running two E-Mags now. Love 'em!
--Dave
On Mon, May 20, 2024 at 3:30=AFPM John <rv6a@rogers.com> wrote:
>
> =EF=BBHello
> I currently have a =9CBendix=9D Shower of Sparks Magneto on
the left side of
> my RV6A and a PMag on the right. The Bendix is in need of an overhaul an
d
> I am undecided whether to do this, or purchase another PMag. In the
> meantime, I have a non-impulse Bendix mag that I was thinking of installi
ng
> as a temporary solution. I would of course disable/remove the buzz box
if
> this were to happen.
> My questions are:
> 1) Does a mag care which side of the engine it is on, as this non-impuls
e
> mag was originally on the right side and will now be on the left?
>
> 2)The ignition switch has a jumper designed to ground the right Mag durin
g
> start, but was removed when the PMag was installed. As such, can a jump
er
> from the aforementioned ground be connected to the proposed non-impulse
> left mag so that it will ground during start?
>
> Although a bit more work, it may be prudent to switch the PMag to the lef
t
> side and put the non-impulse mag on the right.
>
> Thanks,
> John
> RV6A
>
>
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