Today's Message Index:
----------------------
0. 08:24 AM - A List Contribution - It's Your Personal Squelch Button... (Matt Dralle)
1. 08:44 AM - 912 Fuel Manifold (John Elling)
2. 01:33 PM - Re: 912 Fuel Manifold (Richard Girard)
Message 0
| 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: | A List Contribution - It's Your Personal Squelch Button... |
There is an automatic "squelch button" of sorts for the Fund Raiser messages.
Here's how it works... As soon as a List member makes a Contribution through
the Matronics Fund Raiser web site, their email address is automatically added
to this year's Contributor List and they instantly cease to receive further Fund
Raiser messages for the rest of the month! Its just that simple! :-)
I really do appreciate each and every one of your individual Contributions to support
the Lists. It is your support that enables me to upgrade the hardware
and software that are required to run a List Site such as this one. It also goes
to pay for the commercial-grade Internet connection and to pay the huge electric
bill to keep the computer gear running and the air conditioner powered
on. I run all of the Matronics Email List and Forums sites here locally which
allows me to control and monitor every aspect of the system for the utmost in
reliably and performance. Your personal Contribution matters because, when combined
with other Listers such as yourself, it pays the bills to keep this site
up and running. I accept exactly ZERO advertising dollars for the Matronics
Lists sites. I can't stand the pop-up ads and all other commercials that are
so prevalent on the Internet these days and I particularly don't want to have
it on my Email List sites.
If you appreciate the ad-free, grass-roots, down-home feel of the Matronics Email
Lists, please make a Contribution to keep it that way!!
http://www.matronics.com/contribution
or, you can send a personal check to the following address:
Matronics / Matt Dralle
581 Jeannie Way
Livermore, CA 94550
Thank you!
Matt Dralle
Matronics Email List Administrator
[Note that there are certain circumstances where you might still see a Contribution
related message. For example, if someone replies to one of the messages,
when using the List Browse feature, or when accessing List message via the Forum.
The system keys on the given email address and since most of these are anonymous
public access methods, there is no simple way to filter them.]
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: | 912 Fuel Manifold |
The original builder of my titan tornado did not include a fuel manifold
with fuel return line. Rotax does not like this so I've been planning
to add one along the lines of the figure in section 1.4.1 of the
installation manual Fuel Systems. I figure I can also add a fuel
pressure gauge while I'm at it.
I'm concerned that the fuel pressure gauge handle the old pump (which I
have, max 5.8 psi) and the new pump if I ever need it. It looks like
the UMA fuel sensor and gauges are calibrated for the 5.8 psi max. How
have you dealt with this?
What is the fuel pressure sensor for?
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: 912 Fuel Manifold |
John, I think the fuel pressure gauge is there to make sure you don't over
power the needle valve.
When I added the feedback line to a Just Aircraft Escapade I had no way to
run the line back to one of the wing tanks so I ran it to the line before
the header tank. This turned out to be a big mistake as the feedback line
would allow the fuel to flow backward, bypass the fuel shut off valve and
keep the needle valves always under pressure. I wasn't able to solve it
until the owner added a different header tank and I was able to plumb it so
that there was an airspace in the top of the tank to act as a suction break
.
Since you're doing an ELSA (of EAB) airplane I'd suggest you look at the
function of the Rotax parts. They charge a ton for them (almost $200 for
all the parts necessary) and you can get the same function with a Tee and
three barbed fittings. Modify one barbed fitting so the through hole is
reduced to about .050" and you've done the same thing the Rotax parts do
for one tenth the price.
If you have to add a second fuel pump consider using a Facet 40104 that has
a maximum pressure of 4 1/2 psi. It has no check valve so if it should fail
fuel continues to flow right through it. I've tested it with the Rotax fuel
pump on the Escapade and when I added a Mikuni pulse pump to my trike. In
both I shut off the Facet to test its effect at maximum climb angle and the
engine in both cases just kept on humming along.
Rick Girard
On Sun, Nov 11, 2018 at 10:48 AM John Elling <jelling@newmexico.com> wrote:
> jelling@newmexico.com>
>
> The original builder of my titan tornado did not include a fuel manifold
> with fuel return line. Rotax does not like this so I've been planning
> to add one along the lines of the figure in section 1.4.1 of the
> installation manual Fuel Systems. I figure I can also add a fuel
> pressure gauge while I'm at it.
>
> I'm concerned that the fuel pressure gauge handle the old pump (which I
> have, max 5.8 psi) and the new pump if I ever need it. It looks like
> the UMA fuel sensor and gauges are calibrated for the 5.8 psi max. How
> have you dealt with this?
>
> What is the fuel pressure sensor for?
===========
===========
===========
===========
===========
===========
>
>
--
=9CBlessed are the cracked, for they shall let in the light.=9D
Groucho Marx
<http://www.goodreads.com/author/show/43244.Groucho_Marx>
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! --
|