Today's Message Index:
----------------------
1. 12:08 AM - Re: two fuses in a circuit (johnbright)
2. 06:50 AM - Re: Rotax install (meat_ball)
3. 07:57 AM - Re: two fuses in a circuit (Robert L. Nuckolls, III)
4. 08:28 AM - Re: two fuses in a circuit (Ken Ryan)
5. 09:42 AM - RG400 with RG58 (Dan Fritz)
6. 03:15 PM - Re: Re: Revmaster engine with EarthX battery (Robert L. Nuckolls, III)
7. 03:57 PM - Re: Revmaster engine with EarthX battery (dj_theis)
8. 04:50 PM - Re: RG400 with RG58 (Chuck Birdsall)
9. 05:59 PM - Re: RG400 with RG58 (Robert L. Nuckolls, III)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: two fuses in a circuit |
Walbro 395 flow and current... the Walbro page I found had broken links to the
jpg graphs but those broken links have the file name and with that one can google
and get https://walbrofuelpumps.com/images/flow-charts/
In that file space is "GSL395-Flow-Chart.jpg"... attached.
--------
John Bright, RV-6A, at FWF, O-360
Z-101 single batt dual alt SDS EM-5-F.
john_s_bright@yahoo.com, Newport News, Va
https://drive.google.com/drive/folders/1u6GeZo6pmBWsKykLNVQMvu4o1VEVyP4K
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=497578#497578
Attachments:
http://forums.matronics.com//files/gsl395_flow_chart_373.jpg
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Rotax install |
Thanks again, Joe! I appreciate everyones input. Ill try to iron this out, but
Im sure Ill be back with more questions.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=497580#497580
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: two fuses in a circuit |
If you use an LED indicator, the obligatory
current limiting resistor for the LED can
be installed at the 'head end' of the indicator
feeder where the fuse would be located . . .
putting the resistor there limits current
in that feeder to milliamps even when shorted
to ground. The fuse goes away.
Bob . . .
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: two fuses in a circuit |
Thanks for that Bob, and thanks Charlie for the fusing advice.
On Sat, Aug 8, 2020 at 7:01 AM Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> If you use an LED indicator, the obligatory
> current limiting resistor for the LED can
> be installed at the 'head end' of the indicator
> feeder where the fuse would be located . . .
> putting the resistor there limits current
> in that feeder to milliamps even when shorted
> to ground. The fuse goes away.
>
> Bob . . .
>
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
When I started my Velocity build, I installed embedded antennas in the wings with
RG58 also embedded from the wing root to the antennas. Now I need to complete
the rest of the coax runs to the radios (about 12 additional feet). Is there
any reason I can't use RG400 for this section of the cable, connecting the
two with BNC connectors?
Dan
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=497584#497584
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Revmaster engine with EarthX battery |
>
>
>http://forums.matronics.com//files/revmaster_voltage_regulators_516.pdf
>
>
I'm confused . . . this drawing does not illustrate
location of rectifier/regulators in the system.
Also, are the crowbar modules pulling down against
the energy of a dynamo or energy of the battery?
Bob . . .
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Revmaster engine with EarthX battery |
>I'm confused . . . this drawing does not illustrate
>location of rectifier/regulators in the system.
>Also, are the crowbar modules pulling down against
>the energy of a dynamo or energy of the battery?
I'm honored by your response, but crushed by the fact that my drawings are obscuring
what I am trying to convey.
The rectifiers / regulators are part of the circuit, depicted in the lower left
and lower right. The rectifiers are modeled as a box with an SCR and a control
circuit that simply open the charging path for the PM alternator.
Yes, Revmaster installs two rectifiers, one for each PMA. The R/R they supply
confused me at first, as they are 3 wire devices (actually shown in the Revmaster
manual as two wires with the body of the recifier being grounded). I've spent
a considerable amount of time trying to understand their operation and believe
what I'm showing (a series, 1/2 wave rectifier / regulator for each PMA)
is accurate. I'm happe to be shown the error in my understanding and depiction
of the charging circuit. Maybe a better understanding will expose a weakness
beyond poor heat rejection for the design.
I've attached a larger drawing that shows the full circuit with your very elegant
crowbar, overvoltage protection.
I've not cleaned up this version so it likely has numerous wire size and details
errors. If you can overlook these shortcomings, hopefully the full drawing
is more easily
Kind regards,
Dan Theis
--------
Scratch building Sonex #1362
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=497589#497589
Attachments:
http://forums.matronics.com//files/z16m_revmaster_2300_r10a_pg1_176.pdf
Message 8
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: RG400 with RG58 |
In short - that would work just fine.
The only caution I would add is that RG400 is slightly different in size than RG58.
Make sure the connectors you use are compatible with the cable. A dual-crimp
BNC designed for RG 58 may not fit on RG400 as 400 has dual (thus thicker)
shielding. You wont know this until you try to push the crimp ferrule into position
prior to final crimp.
Chuck
On Aug 8, 2020, at 11:50, Dan Fritz <Dfritzj@yahoo.com> wrote:
When I started my Velocity build, I installed embedded antennas in the wings with
RG58 also embedded from the wing root to the antennas. Now I need to complete
the rest of the coax runs to the radios (about 12 additional feet). Is there
any reason I can't use RG400 for this section of the cable, connecting the
two with BNC connectors?
Dan
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=497584#497584
Message 9
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: RG400 with RG58 |
At 06:46 PM 8/8/2020, you wrote:
>
>In short - that would work just fine.
>
>The only caution I would add is that RG400 is slightly different in size
>than RG58. Make sure the connectors you use are compatible with the cable.
Both are nominally 0.195" diameter and use
the same connectors. The shield grip sleeve
is a bit harder to push over the RG400 shields
because there are 2 of them . . . but it will
go.
Bob . . .
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|