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 Post subject: Re: Fuel extension in the Glasair III
PostPosted: 27 Jun 2014, 10:18 
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Username Protected wrote:
Ryan,

Thanks! Will keep the 530W for IFR operations as the built-in G3X WAAS GPS is not IFR capable.

Todd,

I really have the bug for a Glasair (thanks to you)!

Is each G3X a Comm? Not that you need three, but could you theoretically have three if the audio panel would handle them?

If the G3X is WAAS, why is it not IFR capable? Is the database not update-able or what?


G3X is like a G500 with a 696/796 WAAS GPS receiver. More appropriately, it is like a 696 with the capability of the G500 (and then some) built in. It has no radio.

You are essentially asking the same question as why isn't a 696 IFR capable. The answer is all IFR GPS's have to be certified.

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 Post subject: Re: Fuel extension in the Glasair III
PostPosted: 27 Jun 2014, 10:21 
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Username Protected wrote:

If the G3X is WAAS, why is it not IFR capable? Is the database not update-able or what?


G3X is like a G500 with a 696/796 WAAS GPS receiver. All IFR GPS's have to be certified.

Ahh, got it. Thanks
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Ray Bishop
'65 Deb
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 Post subject: Re: Fuel extension in the Glasair III
PostPosted: 27 Jun 2014, 11:01 
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Joined: 03/23/11
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Location: Frederick, MD
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before you get too excited.....go and sit in one. :eek: :bugeye: :eek:

I saw the inside of one for the first time the other day.....I just couldn't get over how my feet were gonna fit in that tiny hole.....for all that time.
Username Protected wrote:
Ryan,

Thanks! Will keep the 530W for IFR operations as the built-in G3X WAAS GPS is not IFR capable.

Todd,

I really have the bug for a Glasair (thanks to you)!

Is each G3X a Comm? Not that you need three, but could you theoretically have three if the audio panel would handle them?

If the G3X is WAAS, why is it not IFR capable? Is the database not update-able or what?

_________________
Views represented here are my own.....and do not in anyway reflect my employer's position.


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 Post subject: Re: Fuel extension in the Glasair III
PostPosted: 27 Jun 2014, 11:08 
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Username Protected wrote:
I saw the inside of one for the first time the other day.....I just couldn't get over how my feet were gonna fit in that tiny hole.....for all that time.

That's why it's so FAST! Time flies by!

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Arlen
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Head out on the highway
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 Post subject: Re: Fuel extension in the Glasair III
PostPosted: 27 Jun 2014, 12:11 
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Joined: 03/15/08
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Location: Loveland, CO
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I'm 6-4 and the glassair III was a pretty comfortable ride. bh


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 Post subject: Re: Fuel extension in the Glasair III
PostPosted: 27 Jun 2014, 12:20 
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Location: West Palm Beach, FL (KLNA)
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Err, I hope you also added a relief tube! :bugeye:

How do you manage the Fuel?

Airplanes generally fly faster with 'aft' CG.. Burn the center tank last?

Also, are you going to integrate engine instruments into the dual G3X too?


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 Post subject: Re: Fuel extension in the Glasair III
PostPosted: 27 Jun 2014, 15:17 
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Username Protected wrote:
Err, I hope you also added a relief tube! :bugeye:

How do you manage the Fuel?

Airplanes generally fly faster with 'aft' CG.. Burn the center tank last?

Also, are you going to integrate engine instruments into the dual G3X too?


The fuel is simply off/on/header tank. Generally, you leave the 8 gallons of useable fuel in the header tank as a reserve. The main left and right tanks are interconnected along with the wing tips and the rear tank pumps into those tanks. You run the plane about 30 minutes and then turn on the transfer pump. The rear tank then pumps to the main tank. This gives you about 74 gallons usable. If you run them dry you switch to the header, but you better be close since you are down to about 35-40 minutes at that time.

Most Glasair IIIs are a little tail heavy. This one has the heavier Angle Valve engine and 3-blade prop that adds about 45 more lbs up front. With the rear tank full and another 40 lbs of bags back there along with 2 180 lb pilots you are in the far 1/4 of the envelope and that moves forward in flight. With all the fuel empty you are in the forward 1/3 and with the center tank empty you are getting close to the front. The ones without the heavy engine need the fuel in the front to keep them from being past the aft limit.

The G3X touch will incorporate the flight instruments, engine instruments, autopilot, and charts, along with SVT and HITS. It is an incredible piece of equipment. If the GPS was certified for IFR I would dump the 530w as well.

As for inside room, it is as wide as a Bonanza and the seats are positioned nicely. Not a lot of room for size 18 feet I suppose, but very comfortable.

What is neat is that you climb out at 150-160 knots indicated at 1000 FPM. You get to attitude quickly and cover some ground doing so. Should be fun.

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Last edited on 27 Jun 2014, 17:18, edited 1 time in total.

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 Post subject: Re: Fuel extension in the Glasair III
PostPosted: 27 Jun 2014, 15:58 
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Joined: 01/06/11
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Username Protected wrote:
The fuel is simply off/on/header tank. Generally, you leave the 8 gallons of useable fuel in the header tank as a reserve. The main left and right tanks are interconnected along with the wing tips and the rear tank pumps into those tanks.


Is this the standard plumbing for ths type of airplane? It seems unusual to have a "both" position on a low wing airplane. If one pick-up tube unports, it might not draw fuel from the other tank. Kinda like trying to suck soda thru a straw with hole in the side of the straw. While we often see systems which use a "both" position, I think they are generally gravity feed systems. Maybe you have a fuel pump at each tank.

Robert


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 Post subject: Re: Fuel extension in the Glasair III
PostPosted: 27 Jun 2014, 16:13 
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No, this is the standard setup for fuel. As far as I know it has not been a problem and many of these planes are used for some pretty serious aerobatics.

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The kid gets it all. Just plant us in the damn garden, next to the stupid lion.


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 Post subject: Re: Fuel extension in the Glasair III
PostPosted: 27 Jun 2014, 22:20 
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the 8 gallon header tank fixes the unporting issues....if there were any.

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 Post subject: Re: Fuel extension in the Glasair III
PostPosted: 27 Jun 2014, 23:28 
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Username Protected wrote:
the 8 gallon header tank fixes the unporting issues....if there were any.


Todd said the selector was on/off/header. Based upon that comment, I am assuming the header is a reserve tank. How would that help a potential unporting issue? Are there any production, low wing airplanes with the option for both on the selector? I'm not sure. The Bonanza and the Arrow I have had were either left or right. I am assuming this is why.

Robert


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 Post subject: Re: Fuel extension in the Glasair III
PostPosted: 27 Jun 2014, 23:39 
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Joined: 07/26/10
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Location: West Palm Beach, FL (KLNA)
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Username Protected wrote:
Err, I hope you also added a relief tube! :bugeye:

How do you manage the Fuel?

Airplanes generally fly faster with 'aft' CG.. Burn the center tank last?

Also, are you going to integrate engine instruments into the dual G3X too?



The G3X touch will incorporate the flight instruments, engine instruments, autopilot, and charts, along with SVT and HITS. It is an incredible piece of equipment. If the GPS was certified for IFR I would dump the 530w as well.


What are you going to use for ADS-B in? the G3X can just take the output of the GDL-39..

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 Post subject: Re: Fuel extension in the Glasair III
PostPosted: 28 Jun 2014, 01:44 
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Joined: 10/25/10
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Username Protected wrote:
Todd,

I really have the bug for a Glasair (thanks to you)!

Is each G3X a Comm? Not that you need three, but could you theoretically have three if the audio panel would handle them?

If the G3X is WAAS, why is it not IFR capable? Is the database not update-able or what?

I did sit in one about a month ago and actually looked at the same Glasair Todd purchased. The wife sat down, looked around and said "now this is the way to fly!". It was really pretty comfortable, and at 215 knots, you don't have to sit for very long.

But have not yet actually flown one. Can't decide if we can make do with two seats and small baggage area.
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Ray Bishop
'65 Deb
now in Oil country - E06


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 Post subject: Re: Fuel extension in the Glasair III
PostPosted: 28 Jun 2014, 06:43 
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Joined: 03/23/11
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Location: Frederick, MD
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OK....I didn't catch that....and the one I saw appeared to have everything flowing thru the header tank.....which IMHO is an excellent safety & reliability design feature.
Username Protected wrote:
the 8 gallon header tank fixes the unporting issues....if there were any.


Todd said the selector was on/off/header. Based upon that comment, I am assuming the header is a reserve tank. How would that help a potential unporting issue? Are there any production, low wing airplanes with the option for both on the selector? I'm not sure. The Bonanza and the Arrow I have had were either left or right. I am assuming this is why.

Robert

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Views represented here are my own.....and do not in anyway reflect my employer's position.


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 Post subject: Re: Fuel extension in the Glasair III
PostPosted: 28 Jun 2014, 10:39 
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Joined: 11/19/12
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Company: North Air Flite
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Username Protected wrote:
the 8 gallon header tank fixes the unporting issues....if there were any.


Todd said the selector was on/off/header. Based upon that comment, I am assuming the header is a reserve tank. How would that help a potential unporting issue? Are there any production, low wing airplanes with the option for both on the selector? I'm not sure. The Bonanza and the Arrow I have had were either left or right. I am assuming this is why.

Robert


Every Ag plane I've flown just has on and off.

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