Today's Message Index:
----------------------
1. 03:48 AM - Re: Fuel Systems (MacDonald Doug)
2. 03:48 AM - Re: Fuel Systems (kmccune)
3. 04:56 AM - Re: Air Drill (Tommy Walker)
4. 06:01 AM - CSA CANCELS 2008 ROCKY MOUNTAIN REGIONAL FLY-IN AND FRONT RANGE AIR SHOW (Keith Ashcraft)
5. 06:44 AM - Re: RE. Fuel Systems (carl)
6. 07:46 AM - Re: Re: Fuel Systems (carl)
7. 09:38 AM - Painting Questions (649WD)
8. 09:50 AM - Re: Painting Questions (n85ae)
9. 09:59 AM - Re: Fuel Systems (n85ae)
10. 10:03 AM - Re: Air Drill (n85ae)
11. 02:12 PM - Re: Fuel Systems (kmccune)
12. 02:55 PM - Re: Re: Fuel Systems (Keith Ashcraft)
13. 03:09 PM - Re: Fuel Systems (jetboy)
14. 05:08 PM - Re: Fuel Systems (kmccune)
15. 05:36 PM - Re: Fuel Systems (kmccune)
16. 07:25 PM - Corrosion Protection (txpilot)
17. 07:49 PM - Re: Corrosion Protection (John Bolding)
18. 09:09 PM - Re: Re: Fuel Systems (carl)
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: Fuel Systems |
Kevin, is this fuel system design from the guy who ran
afoul with Transport Canada a few years ago while
trying to fly around the world in a 701 rip off?
Seems to me that he couldn't get approval to take off
from Newfoundland with full fuel or some such thing.
Took off anyway, had to return for weather or a minor
mechanical issue (can't rememberexactly) and then
crashed on landing because he was so overweight due to
all of the fuel. Seems to me that he got hit with ten
plus thousand dollars in fines.
Sad end to an interesting sounding adventure.
Doug MacDonald
NW Ontario
--- kmccune <kmccune@somtel.net> wrote:
> <kmccune@somtel.net>
>
> No, sorry the drawing is from the Brazilian list and
> I guess that they had dual wing tanks sown as one!
> No, I was just asking if this basic layout is what
> you were describing? The drawing shows way too much
> fuel, unless your thinking about flying around the
> globe by yourself.
> The 3 gallons was a safe weight wise, amount to
> increase the range a little and to give better low
> fuel warnings with the tank.
>
> Kevin
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: Fuel Systems |
My next problem is figuring out the fuel return from the pump. As long as the
small collector tank is vented back to the wing tanks, I think I can return to
the collector tank. The 3/8" lines do make more sense and they would flow more
readily too.
Actually back to reality now, my next problem is getting more material, And reinforcing
my brake! I need to get something to hang all this fuel stuff in first!
Thanks again
Kevin
--------
Mark Twain: Twenty years from now you will be more disappointed by the things that
you didn't do than by the ones you did do. So throw off the bowlines. Sail
away from the safe harbor. Catch the trade winds in your sails. Explore. Dream.
Discover.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=187707#187707
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 |
|
Thanks John,
I will head down to the local HD and check out the drill.
Tommy Walker in Alabama
Do Not Archive
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: | CSA CANCELS 2008 ROCKY MOUNTAIN REGIONAL FLY-IN AND |
FRONT RANGE AIR SHOW
For those of you interested. I know that a few of you have flown in before.
It looks like this event has been canceled.
http://rmrfi.org/
I was just double checking the weekend date, and I found the cancellation n
otice.
Take care.
Keith
CH701 -- scratch
N 38.9947
W 105.1305
Alt. 9,100'
http://picasaweb.google.com/ch701builder/SN4765
--
________________________________
This e-mail and any files transmitted with it may be proprietary and are in
tended solely for the use of the individual or entity to whom they are addr
essed. If you have received this e-mail in error please notify the sender.
Please note that any views or opinions presented in this e-mail are solely
those of the author and do not necessarily represent those of ITT Corporati
on. The recipient should check this e-mail and any attachments for the pres
ence of viruses. ITT accepts no liability for any damage caused by any viru
s transmitted by this e-mail.
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 |
|
| Subject: | Re: Fuel Systems |
Chuck
Vent from top of collector to top of right wing tank. Right tank has
vented cap.
Carl
----- Original Message -----
From: Chuck Deiterich
To: zenith701801-list@matronics.com
Sent: Thursday, June 12, 2008 11:49 PM
Subject: RE. Zenith701801-List: Fuel Systems
Carl,
How do you vent your collector tank?
Chuck D.
N701TX
<From: "Carl" <b.Carl@sympatico.ca>
<Subject: Zenith701801-List: Fuel Systems
<
<To feed all the wing fuel safely I added a collector to the back of
the baggage
<compartment.
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: Fuel Systems |
Ralf
Your design is interesting. I have a couple of questions.
1. If air is sucked into your columns how will it escape and let feed
resume? I see only two ways, to the engine or fight its way back through the
fuel stream from the tanks. Either may cause fuel starvation.
2. If air gets trapped in your columns/lines (air lock) how will you
detect the problem in time to prevent fuel starvation?
I strongly recommend collector tanks be vented to prevent airlocks and aid
feeding, and fitted with reliable sensor(s) to alert the pilot when he is
running low on fuel or feed is interrupted.
A final comment. I am not sure what irrigation pipe is made of. I made my
collector out of .063 alum. so it could take knocks in case of an accident.
Maybe overkill, .040 probably would suffice and save weight.
Hope this helps
Carl
Original Message -----
From: "jetboy" <sanson.r@xtra.co.nz>
Sent: Friday, June 13, 2008 2:13 AM
Subject: Zenith701801-List: Re: Fuel Systems
>
> Carl,
> A few weeks ago I looked at adding tall cylinder style header tanks
> to the baggage area on each side, where my fuel lines currently run down
> to my fuel selector located on the seat backrest between the seats.
>
> Possibility for safety and ease of construction was to use irrigation
> tubing 5" dia. and with the top end plate and bottom end plate set at a
> suitable angle 15 - 30 degs. with an intake pipe and outlet pipe welded in
> at the apex of each end. This to take care of the need to have as little
> air pocket / water trap as possible and not require separate vents.
>
> with height restricted to around 10" and this type of tubing I would get
> around 4.5 litres each side, this should alleviate the occasional unported
> low fuel wing tank situation I have experienced when doing steep descents
> or uncoordinated turns. It does get your attention!
>
> I haven't gone ahead with this mod yet, is there a perceived problem with
> not providing separate venting, as my plan was to avoid the fuel lines
> changing direction, should be going down all the way from tanks to the
> gascolator aft and below the seat level thence upwards towards the carb?
> This is how I was told a fuel system should be, no siphon / airlock traps.
>
> Regards, Ralph
>
> --------
> Ralph - CH701 / 2200a
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=187698#187698
>
>
>
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: | Painting Questions |
Now that Im finished with my tail and having to wait for the rest of the kit to
arrive, I thought about painting my tail just to have something to do for a while.
I was wondering what some of you have used as far as type and brand of paint,
primer etc. Also what do you normally do for items such as N Numbers. Are
those painted on or do you use some type of stick on numbers, etc. Any info
would be greatly appreciated.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=187752#187752
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: Painting Questions |
I'm painting with System Three Waterborne Polyurethane (WR-LPU) and
waterborne epoxy primer WR-155. From a enviro friendly standpoint
I like it a lot, the Polyurethane is temperamental stuff and takes a lot
of practice (heat, humidity, and gun setup sensitive),but is very tough
when cured. Don't have to worry about keeling over when using it.
>From the perspective of what I like best, I used PolyFiber Aerothane in
the past on my Kitfox. I like it a lot better for ease of use, but don't like
the "kills you if not careful" factor.
The system three is 50% the cost of some of the other waterborne
polyurethanes and works out about $90-100 per gallon.
It is used a lot by boat builders, but don't hear much about it from
airplane builders so I think it is a somewhat undiscovered paint system.
Jeff.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=187755#187755
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: Fuel Systems |
Go to www.summitracing.com and look at fuel cells, they have a bunch
that would be suitable for use as header tanks at reasonable prices. They
range from 2 quarts to 30+ gallons. They have fittings, and mounting tabs
all ready to go.
Header tanks typically vent to one of the fuel tanks.
Fuel injection return lines to the header require a check valve so don't
forget that item.
As follows:
[fuel tank]---->[header]---(fuel shutoff)----->Engine driven pump feed
[fuel tank]---->[header]---
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=187757#187757
Message 10
| 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 |
|
I use a small Makita 6501 high speed drill (4500 rpm) I like it a LOT better
than pneumatic drills. Light, relatively cheap, quiet, and drills like
crazy. Plus the compressor isn't on all the time
http://www.makita.com/menu.php?pg=product_det&tag=6501
Jeff
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=187759#187759
Message 11
| 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: Fuel Systems |
I don't know if it is or not, but 40 gallons is the approximate fuel capacity with
the optional 2nd wing tanks so I assumed the guy for simplicity just drew
one tank knowing the the pairs had to be plumbed together. That was the reason
for my comment about flying around the globe by yourself. By the time you put
a couple clean pairs of underwear and a cooler of evening refreshments in the
back, your about over weight.
But for myself, from time to time I would like to be able to slightly extend the
range safely. I like the idea of knowing that when you hit empty you have a
little more, but just don't depend on it. It also like said will help the potential
fuel starvation problem and it seems to me that it would help the wing
tanks empty more evenly?
Kevin
dougsnash wrote:
> Kevin, is this fuel system design from the guy who ran
> afoul with Transport Canada a few years ago while
> trying to fly around the world in a 701 rip off?
>
> Seems to me that he couldn't get approval to take off
> from Newfoundland with full fuel or some such thing.
> Took off anyway, had to return for weather or a minor
> mechanical issue (can't rememberexactly) and then
> crashed on landing because he was so overweight due to
> all of the fuel. Seems to me that he got hit with ten
> plus thousand dollars in fines.
>
> Sad end to an interesting sounding adventure.
>
> Doug MacDonald
> NW Ontario
>
>
> --- kmccune wrote:
>
>
> >
> >
> >
> > No, sorry the drawing is from the Brazilian list and
> > I guess that they had dual wing tanks sown as one!
> > No, I was just asking if this basic layout is what
> > you were describing? The drawing shows way too much
> > fuel, unless your thinking about flying around the
> > globe by yourself.
> > The 3 gallons was a safe weight wise, amount to
> > increase the range a little and to give better low
> > fuel warnings with the tank.
> >
> > Kevin
> >
> >
>
--------
Mark Twain: Twenty years from now you will be more disappointed by the things that
you didn't do than by the ones you did do. So throw off the bowlines. Sail
away from the safe harbor. Catch the trade winds in your sails. Explore. Dream.
Discover.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=187785#187785
Message 12
| 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: Fuel Systems |
There is a guy flying here in Colorado, that has both the 10-gallon tanks a
nd the header tank (I think the original 9-gallon?). The header gets filled
from both wing-tanks. I have thought about this idea, but use a smaller (2
-3 gallon) header tank. (more room for electronics)
I'm not understanding his fuel level warning, is it just a probe that detec
ts if it is emersed in fuel or not?
The extra 120+ lbs does cut down on your payload, but if I were to fly usin
g the extended fuel (extra wing tanks) , I would be by myself also. I would
rather have the tanks and not use them instead of needing them and not hav
ing them.
My 2 cents (0.00518 gallons worth)
Keith
***************************************************************************
*********************
kmccune wrote:
lto:kmccune@somtel.net>
I don't know if it is or not, but 40 gallons is the approximate fuel capaci
ty with the optional 2nd wing tanks so I assumed the guy for simplicity jus
t drew one tank knowing the the pairs had to be plumbed together. That was
the reason for my comment about flying around the globe by yourself. By the
time you put a couple clean pairs of underwear and a cooler of evening ref
reshments in the back, your about over weight.
But for myself, from time to time I would like to be able to slightly exten
d the range safely. I like the idea of knowing that when you hit empty you
have a little more, but just don't depend on it. It also like said will he
lp the potential fuel starvation problem and it seems to me that it would h
elp the wing tanks empty more evenly?
Kevin
dougsnash wrote:
Kevin, is this fuel system design from the guy who ran
afoul with Transport Canada a few years ago while
trying to fly around the world in a 701 rip off?
Seems to me that he couldn't get approval to take off
from Newfoundland with full fuel or some such thing.
Took off anyway, had to return for weather or a minor
mechanical issue (can't rememberexactly) and then
crashed on landing because he was so overweight due to
all of the fuel. Seems to me that he got hit with ten
plus thousand dollars in fines.
Sad end to an interesting sounding adventure.
Doug MacDonald
NW Ontario
--- kmccune wrote:
No, sorry the drawing is from the Brazilian list and
I guess that they had dual wing tanks sown as one!
No, I was just asking if this basic layout is what
you were describing? The drawing shows way too much
fuel, unless your thinking about flying around the
globe by yourself.
The 3 gallons was a safe weight wise, amount to
increase the range a little and to give better low
fuel warnings with the tank.
Kevin
--------
Mark Twain: Twenty years from now you will be more disappointed by the thin
gs that you didn't do than by the ones you did do. So throw off the bowline
s. Sail away from the safe harbor. Catch the trade winds in your sails. Exp
lore. Dream. Discover.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=187785#187785
--
*************************************
Keith Ashcraft
ITT Industries
Advanced Engineering & Sciences
5009 Centennial Blvd.
Colorado Springs, CO
80919
(719) 599-1787 -- work
(719) 332-4364 -- cell
keith.ashcraft@itt.com<mailto:keith.ashcraft@itt.com>
keith.ashcraft1@us.army.mil<mailto:keith.ashcraft1@us.army.mil>
________________________________
This e-mail and any files transmitted with it may be proprietary and are in
tended solely for the use of the individual or entity to whom they are addr
essed. If you have received this e-mail in error please notify the sender.
Please note that any views or opinions presented in this e-mail are solely
those of the author and do not necessarily represent those of ITT Corporati
on. The recipient should check this e-mail and any attachments for the pres
ence of viruses. ITT accepts no liability for any damage caused by any viru
s transmitted by this e-mail.
Message 13
| 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: Fuel Systems |
Carl,
Irrigation pipe is 1/16" wall for the thinnest grade.
If air goes down to the columns it should also bubble back up into the wing tanks
where it came when further fuel sloshes down. This is no different to when
you drain the gascolator (another cylinder type tank) and later replenish the
fuel tanks above. I dont see any gascolators, Zenair type or GA type, that have
a vent line running up above the tanks. The columns are effectively an inline
expansion of the diameter of a piece of vertically run fuel line. In fact my
original idea was to construct a much taller Zenair gascolator that runs from
a level in the baggage shelf below the fuel line entry, all the way to the fuselage
floor.
If air is in the columns there is no fuel above so they will run till exhaustion
but the fuel supply will be continuous for that time rather than the on/off
sloshing of 5 litres in the tank trying to find the one outlet in the rear inboard
corner.
Open to reasoning if this is not a viable method, adding vent lines for me would
add more fuel lines in the cabin and require opening up the wings and tanks,
If I were to do that I'd rather add the extra pair of longrange tanks instead.
Further, if my aircraft was constructed to plans there would be no fuel selector
ahead of the dual inlet gascolator/tee and therefore the ability to unport
a tank and get starvation would not be a feature. I like using the Andair left/right/both/off
selector because it lets me park on uneven ground and manage
the balance.
Ralph
[quote="b.carl@sympatico.ca"]Ralf
Your design is interesting. I have a couple of questions.
1. If air is sucked into your columns how will it escape and let feed
resume? I see only two ways, to the engine or fight its way back through the
fuel stream from the tanks. Either may cause fuel starvation.
2. If air gets trapped in your columns/lines (air lock) how will you
detect the problem in time to prevent fuel starvation?
I strongly recommend collector tanks be vented to prevent airlocks and aid
feeding, and fitted with reliable sensor(s) to alert the pilot when he is
running low on fuel or feed is interrupted.
A final comment. I am not sure what irrigation pipe is made of. I made my
--------
Ralph - CH701 / 2200a
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=187793#187793
Message 14
| 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: Fuel Systems |
My reason for not wanting the extra wing tanks is the extra wiring, plumbing, panel
space and weight, even empty they weigh something. With the G13 or BMW engine
the flying hours are quite a few more per tank due to lower fuel burn. How
much more, time will tell and so will I when I find out. But until then its
all BS
(baloney sausage, of course [Wink] )
Kevin
--------
Mark Twain: Twenty years from now you will be more disappointed by the things that
you didn't do than by the ones you did do. So throw off the bowlines. Sail
away from the safe harbor. Catch the trade winds in your sails. Explore. Dream.
Discover.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=187813#187813
Message 15
| 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: Fuel Systems |
This is a pic of a highlander sub-tank. It has two inputs from the wing tanks
on top and one on the bottom. There is no vent to the wing tanks. But it is a
carburated engine so the pump is not returning fuel to the tank all the time.
Kevin
--------
Mark Twain: Twenty years from now you will be more disappointed by the things that
you didn't do than by the ones you did do. So throw off the bowlines. Sail
away from the safe harbor. Catch the trade winds in your sails. Explore. Dream.
Discover.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=187814#187814
Attachments:
http://forums.matronics.com//files/100_0811_164.jpg
Message 16
| 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: | Corrosion Protection |
I have used the Cortec as supplied from ZAC for my corrosion protection. After
buying the 'homebuilt help' video, I decided to take their advice and only apply
Cortec where two pieces were riveted together (presumably where moisture could
become trapped). I guess this is for a weight savings standpoint.
Now after completing my wings and most of my fuselage, I'm seeing a lot of untreated
areas corroding away in front of my eyes! I look in the flange holes in
the wing ribs and see evidence of corrosion where there's bare metal.
The exterior will obviously be protected by paint, but I'm wondering what could
I do for the interior portions (short of disassembling my wings). Any suggestions?
Thanks,
Dan Ginty
N787DG
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=187830#187830
Message 17
| 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: Corrosion Protection |
ACF50 or Corrosion X, very useful here on the Gulf Coast. You WILL have to
get very serious about preping the outside for paint as it crawls up around
the rivets and starts to spread out on the top surface after being sprayed
on the inside. A LITTLE goes a long way. BUT don't prep until you are within
hours of painting as it starts spreading again after you clean it off.
LO&SLO John Bolding
> The exterior will obviously be protected by paint, but I'm wondering what
> could I do for the interior portions (short of disassembling my wings).
> Any suggestions?
>
> Thanks,
>
> Dan Ginty
> N787DG
>
Message 18
| 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: Fuel Systems |
Ralf
Try it without. Make sure your feeds are down hill all the way and you may
want to use bigger than 1/4" lines to aid air moving up through the fuel. If
you have feed issues you don't have to vent to a tank you can vent to
atmosphere.
Do not archive
Carl
----- Original Message -----
From: "jetboy" <sanson.r@xtra.co.nz>
Sent: Friday, June 13, 2008 6:08 PM
Subject: Zenith701801-List: Re: Fuel Systems
>
> Carl,
>
> Irrigation pipe is 1/16" wall for the thinnest grade.
>
> If air goes down to the columns it should also bubble back up into the
> wing tanks where it came when further fuel sloshes down. This is no
> different to when you drain the gascolator (another cylinder type tank)
> and later replenish the fuel tanks above. I dont see any gascolators,
> Zenair type or GA type, that have a vent line running up above the tanks.
> The columns are effectively an inline expansion of the diameter of a piece
> of vertically run fuel line. In fact my original idea was to construct a
> much taller Zenair gascolator that runs from a level in the baggage shelf
> below the fuel line entry, all the way to the fuselage floor.
>
>
> If air is in the columns there is no fuel above so they will run till
> exhaustion but the fuel supply will be continuous for that time rather
> than the on/off sloshing of 5 litres in the tank trying to find the one
> outlet in the rear inboard corner.
>
> Open to reasoning if this is not a viable method, adding vent lines for me
> would add more fuel lines in the cabin and require opening up the wings
> and tanks, If I were to do that I'd rather add the extra pair of longrange
> tanks instead. Further, if my aircraft was constructed to plans there
> would be no fuel selector ahead of the dual inlet gascolator/tee and
> therefore the ability to unport a tank and get starvation would not be a
> feature. I like using the Andair left/right/both/off selector because it
> lets me park on uneven ground and manage the balance.
>
> Ralph
>
> [quote="b.carl@sympatico.ca"]Ralf
> Your design is interesting. I have a couple of questions.
> 1. If air is sucked into your columns how will it escape and let feed
> resume? I see only two ways, to the engine or fight its way back through
> the
> fuel stream from the tanks. Either may cause fuel starvation.
> 2. If air gets trapped in your columns/lines (air lock) how will you
> detect the problem in time to prevent fuel starvation?
>
> I strongly recommend collector tanks be vented to prevent airlocks and aid
> feeding, and fitted with reliable sensor(s) to alert the pilot when he is
> running low on fuel or feed is interrupted.
> A final comment. I am not sure what irrigation pipe is made of. I made my
>
> --------
> Ralph - CH701 / 2200a
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=187793#187793
>
>
>
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! --
|