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Mike Hoffman
Joined: 11 Mar 2006
Posts: 54
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 Posted: Sun Apr 19, 2009 1:22 am Post subject: 701 Fuel line question |
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I am installing my new 912uls Rotax (100 hp) and am looking for a little advice on the proper fitting to use to transition through the firewall. Do you know if the fitting in the supplied motor fuel line is metric or US? I am not using a gas collator at the firewall.
Thanks
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dwilde(at)clearwire.net
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| Posted: Sun Apr 19, 2009 8:37 am Post subject: 701 Fuel line question |
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Mike: My rubber fuel line just goes thru the firewall without a
fitting. A rubber grommet protects the line from chaffing.
Dan Wilde
N948DW
Mike Hoffman wrote:
| Quote: |
I am installing my new 912uls Rotax (100 hp) and am looking for a little advice on the proper fitting to use to transition through the firewall. Do you know if the fitting in the supplied motor fuel line is metric or US? I am not using a gas collator at the firewall.
Thanks
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klondike(at)megalink.net
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| Posted: Sun Apr 19, 2009 9:29 am Post subject: 701 Fuel line question |
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very dangerous setup
---
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Tommy Walker
Joined: 12 Jan 2006
Posts: 442
Location: Anniston, AL 36207
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| Posted: Tue Apr 21, 2009 2:30 pm Post subject: Re: 701 Fuel line question |
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Hi Klondike,
Would you care to elaborate? Both my 701's have the rubber hose going through the firewall with a grommet in place. I believe this is per the plans.
the fuel shutoff is two feet back.
Just curious.
Tommy Walker in Alabama
Do Not Archive.
This is not a flame, just asking 
| klondike(at)megalink.net wrote: | very dangerous setup
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_________________
Tommy Walker
N25A - Anniston, AL |
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dwilde(at)clearwire.net
Guest
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| Posted: Tue Apr 21, 2009 4:33 pm Post subject: 701 Fuel line question |
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Tommy: I looked at my fuel line thru the firewall today. After 60
hours there was no sign of wear on the grommet or fuel line. I looked
at the plans, reviewed all of the assembly guidelines for the601, 701,
and 801 (on the Zenith site) and could not find a picture or any mention
of how to install the fuel lines.
I think with frequent inspections, the rubber hose thru the grommet is
ok but there is the possibility of the grommet wearing out and the fuel
line being cut by the sharp firewall. I reviewed HomebuiltHelp's video
on 912 installation tips and they had a picture of the rubber fuel line
coming thru the firewall inside of an electrical conduit connector.
After reviewing this, I came to the conclusion that this would be less
likely to cause a problem so I made the change. It only took me a
couple of hours. This is one area where Zenith could offer some
guidelines in their documents.
Dan Wilde
Tommy Walker wrote:
| Quote: |
Hi Klondike,
Would you care to elaborate? Both my 701's have the rubber hose going through the firewall with a grommet in place. I believe this is per the plans.
the fuel shutoff is two feet back.
Just curious.
Tommy Walker in Alabama
Do Not Archive.
This is not a flame, just asking
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klondike(at)megalink.net
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| Posted: Tue Apr 21, 2009 6:17 pm Post subject: 701 Fuel line question |
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Tommy,
For some reason the post due not appear on my email on a regular basis.
I.E. I just noticed the post below attached to this letter.
To penetrate the firewall on my 701 ( I have since sold it) I used a "brass
Barb fitting" from the local hardware store. Used rubber fuel line on both
sides , pushed tight to the firewall, so it couldn't vibrate and clamped the
lines. I think Dan is OK with what he did below. I feel that just a
rubber gromet in the firewall was not enough. Just my opinion. Believe me
, I have the most respect for Chris, But there are several places where
some things can be accomplished a little better.
Fritz
---
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Dwight Early
Joined: 15 Jul 2008
Posts: 17
Location: Indiana
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| Posted: Wed Apr 22, 2009 4:12 am Post subject: Re: 701 Fuel line question |
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Hi guys, mine has a fitting from A/C Spruce which passes thru the firewall. Here is the description and part number if you are interested.
GASOLATOR MOUNTING FLANGE 05-00907. It has a barbed fitting installed on each end.
I hope this helps.
Dwight
do not archive
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_________________
Dwight Early
N701EF
Zenith CH701/Revmaster
Daleville, In |
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bobkat
Joined: 07 Sep 2008
Posts: 143
Location: Bismarck, ND
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| Posted: Wed Apr 22, 2009 4:42 am Post subject: 701 Fuel line question |
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That's what I used, with a gascolator in front of the firewall. Although a
rubber gas line through a grommet might be OK, I wanted something more
fireproof and solid so as not to worry about it. Seemed we spend a lot of
time and effort making firewalls fire resistant, running a rubber hose full
of gas through it didn't make sense.
---
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ggower_99(at)yahoo.com
Guest
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| Posted: Wed Apr 22, 2009 8:04 am Post subject: 701 Fuel line question |
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Hello Fritz,
One of Several great thing of the ZAC aircrafts have is betwen all SIMPLICITY. Remember we are not building or flying a certified aircraft. I have 20 years flying ultralight type of airplanes, most every week end (about 100 hrs a year) always used barbed conections and the best quality of rubber car fuel lines, most (like my 701) use(d) the firewall groumet type, never had a problem, we (for self imposed mantainance rules in our club) change the gasoline hoses every two years. Not expensive. Never had found problems with the firewall area in the hoses...
Only add Simplicity and Lightness to a airplane. If not installed will not fail.
KISS (self explanatory
Saludos
Gary Gower
Flying from Chapala, Mexico.
Homebuilding, as free(dom) as flying can get.
--- On Tue, 4/21/09, fritz <klondike(at)megalink.net> wrote:
[quote]From: fritz <klondike(at)megalink.net>
Subject: Re: Re: 701 Fuel line question
To: zenith701801-list(at)matronics.com
Date: Tuesday, April 21, 2009, 10:15 PM
[quote]--> Zenith701801-List message posted by: "fritz" <klondike(at)megalink.net> Tommy, For some reason the post due not appear on my email on a regular basis. I.E. I just noticed the post below attached to this letter. To penetrate the firewall on my 701 ( I have since sold it) I used a "brass Barb fitting" from the local hardware store. Used rubber fuel line on both sides , pushed tight to the firewall, so it couldn't vibrate and clamped the lines. I think Dan is OK with what he did below. I feel that just a rubber gromet in the firewall was not enough. Just my opinion. Believe me , I have the most respect for Chris, But there are several places where some things can be accomplished a little better. Fritz ---
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