Today's Message Index:
----------------------
1. 01:24 AM - Re: 914 fuel sytem in 701 (Robert C Harrison)
2. 09:23 AM - Re: 914 fuel sytem in 701 (Noel Loveys)
3. 09:33 AM - Re: 914 fuel sytem in 701 (Gilles Thesee)
4. 11:19 AM - C box on 447 (lucien)
5. 12:00 PM - Re: 914 fuel sytem in 701 (Tracy)
6. 01:21 PM - Re: 914 fuel sytem in 701 (george may)
7. 03:11 PM - Re: 914 fuel sytem in 701 (Gilles Thesee)
Message 1
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| Subject: | 914 fuel sytem in 701 |
Hi! Tracy
It seems to me that your return to the left tank is so quick that it is
overwhelming the pipe to the right tank. So increase the pipe diameter
to the right tank across the "tee"
Regards
Bob Harrison G-PTAG Europa .
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Tracy
Sent: 08 November 2008 04:10
Subject: RotaxEngines-List: 914 fuel sytem in 701
thought I would post this in the rotax list also and see if anyone has
had a simaliar problem.
I have a 701 with a 914 installed.
I have both tanks teed together before the fuel shut off. I have the
return installed
in the left tank,I have just gottenit running I put about 3/4 of fuel
inthe left tank and ran the engine. I noticed fuel running out the left
wing
and found the tank full!! after a few minutes it came down and leved
both tanks
.
I have the stock zenith caps.
any sugestions? or am I going to have to only fill the laft tank half
full.
is ther a better way to get the fuel to level in both tanks quicker?
anybody have the same issues with a 914?
I know ther arent to many out there in a 701.
Tracy Buttles
Message 2
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| Subject: | 914 fuel sytem in 701 |
Put a shut off on your right tank... leave it off until your left tank is at least
a half a tank down.
Noel
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com [mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Tracy
Sent: Saturday, November 08, 2008 12:40 AM
Subject: RotaxEngines-List: 914 fuel sytem in 701
thought I would post this in the rotax list also and see if anyone has had a simaliar
problem.
I have a 701 with a 914 installed.
I have both tanks teed together before the fuel shut off. I have the return installed
in the left tank,I have just gottenit running I put about 3/4 of fuel
inthe left tank and ran the engine. I noticed fuel running out the left wing
and found the tank full!! after a few minutes it came down and leved both tanks
.
I have the stock zenith caps.
any sugestions? or am I going to have to only fill the laft tank half full.
is ther a better way to get the fuel to level in both tanks quicker?
anybody have the same issues with a 914?
I know ther arent to many out there in a 701.
Tracy Buttles
Message 3
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| Subject: | Re: 914 fuel sytem in 701 |
Tracy a crit :
> is ther a better way to get the fuel to level in both tanks quicker?
> anybody have the same issues with a 914?
> I know ther arent to many out there in a 701.
>
Teed wing tanks rarely work as expected.
In our project, the fuel valve switches return lines as well as feed
fuel lines. So the fuel goes back into the tank it came from.
Best regards,
--
Gilles
http://contrails.free.fr
Message 4
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Hi all,
Is the C box usable on the 447? Reason I ask is, I'm thinking about a project for
a 447 but I have a C box in 3.47:1 ratio that I'd like to reuse on it if possible.
I know prop selection would be a separate issue, but I'd like to know if the C
box will work on a 447 to begin with.
Thanks,
LS
--------
LS
Titan II SS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=213043#213043
Message 5
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| Subject: | RE: 914 fuel sytem in 701 |
thanks for the info. im thinking which will work best ,being simple to operate
and easy to mod in.
I would have to get the right tank out and weld in a fitting and plum more lines
to an aircraft already together.
im thinking a colletor tank would be simplest.
Tracy
Message 6
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| Subject: | 914 fuel sytem in 701 |
Tracy--
Did you put a restriction in the return line? I believe that Rotax indic
ates that the return line should be restricted to a cross section of 3mm or
about 1/16 of an inch. This would slow the fuel movement and keep the fue
l level consistent in both tanks.
George May
601XL 912s
> Date: Fri=2C 7 Nov 2008 20:09:48 -0800
> From: pbuttles@charter.net
> To: rotaxengines-list@matronics.com
> Subject: RotaxEngines-List: 914 fuel sytem in 701
>
>
> thought I would post this in the rotax list also and see if anyone has ha
d a simaliar problem.
>
> I have a 701 with a 914 installed.
> I have both tanks teed together before the fuel shut off. I have the ret
urn installed
> in the left tank=2CI have just gottenit running I put about 3/4 of fuel
> inthe left tank and ran the engine. I noticed fuel running out the left w
ing
> and found the tank full!! after a few minutes it came down and leved bo
th tanks
> .
> I have the stock zenith caps.
> any sugestions? or am I going to have to only fill the laft tank half
full.
> is ther a better way to get the fuel to level in both tanks quicker?
> anybody have the same issues with a 914?
> I know ther arent to many out there in a 701.
>
> Tracy Buttles
>
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>
>
>
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Message 7
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| Subject: | Re: 914 fuel sytem in 701 |
george may a crit :
> Tracy--
> Did you put a restriction in the return line? I believe that Rotax
> indicates that the return line should be restricted to a cross section
> of 3mm or about 1/16 of an inch. This would slow the fuel movement
> and keep the fuel level consistent in both tanks.
George and all,
Our 914 Installation Manual specified :
"The fuel reutrn must be a line of *low resistance*. Max tolerated
pressure loss is *0.1 bar* (1.5 psi) between fuel pressure control and
tank inlet with *both* electric fuel pumps in action."
So in my opinion, the fuel return line should NOT be restricted.
The 914 is different from the 912 series.
Best regards,
--
Gilles
http://contrails.free.fr
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