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Header Tank Wanted

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pilotdna(at)HOTMAIL.COM
Guest

Posted: Mon Nov 26, 2007 8:35 am Post subject: Header Tank Wanted

Hi list,



Do any of you HD/HDS kit builders have the standard 16 gallon header tank left over from your build (perhaps due to switching to the optional wing tank system)?  I'd like to use a simple gravity feed header tank only system, which should be more than adequate since my plane is minimally equipped and will be only for day sport flying.  Please let me know if you have one you would like to sell.



Also, anyone willing to send me the drawing page that shows how the tank is mounted would be greatly appreciated.  This is not standard or part of the 601XL plans, and I know some changes would need to be made to the brackets, but I'd like to see the HD/HDS drawing as a starting point.



Thanks,

Doug E

Corvair/601XL TD Scratch Build

North Florida



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Wingrider

Joined: 22 Nov 2006
Posts: 34
Location: Tullahoma, TN

Posted: Mon Nov 26, 2007 6:13 pm Post subject: Re: Header Tank Wanted

I've got one I don't plan to use. I don't know what it's worth, do you have the factory Zenith seat belt/shoulder harness to trade?

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Rich Whittington
Tullahoma, TN
Zenith 601HDS
Corvair 3 Liter 120HP

pilotdna(at)HOTMAIL.COM
Guest

Posted: Mon Nov 26, 2007 8:24 pm Post subject: Header Tank Wanted

List,

Thanks for all the input I recieved.  Special thanks to list user Craig Payne who took the time to photograph his tank and explain to me some of the detailed issues involved with installing it.  I heard enough today to change my mind about the changes I was going to make to the fuel system, I'll stick with the plans now.



Lesson sincerely learned,

Doug E

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jhines

Joined: 14 Mar 2007
Posts: 20
Location: Bella Vista, Arkansas

Posted: Mon Nov 26, 2007 8:52 pm Post subject: Re: Header Tank Wanted

Doug,



What information did Craig share with you?  I was thinking of doing the same thing so I am interested in hearing what changed your mind.  I'm a Corvair guy so the gravity feed system would sure be simpler and cheaper.  I admit that opinion is rather uninformed.



John

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John Hines

pilotdna(at)HOTMAIL.COM
Guest

Posted: Tue Nov 27, 2007 7:37 am Post subject: Header Tank Wanted

John,



Here's a summary of the input of several builders.



Advantages of big header tank:  simpler, lighter, cheaper



Disadvantages of big header tank:

The welded tanks are prone to pinhole leaks (two builders offered me their new tanks that had leaks), which would end up directly in the cabin.

Spills during fueling seep in and make the cabin smell of fuel.

Cable routing through the firewall becomes trickier.

You could not mount the Corvair ignition components on the inside of the firewall.

The tank mounting shown in the HD/HDS is not very applicable to the XL due to different panel geometry.

Several panels of the factory header are only 0.025, which is of questionable crashworthiness.

Depth behind the panel is greatly reduced, a standard Icom A200 will no longer fit.

I observed the 16 gal header to also be much deeper than expected, right down to the rudder pedals, so if gravity flow at high alpha turned out to be marginal in ground tests you'd be right back to the $1000 MA3 or Ellison carb and fuel pumps (which work very well, but were the costs I was trying to avoid in the first place).

None of the disadvantages are total show stoppers, it could work very well.  If there were a tough racecar style plastic fuel cell on the market that mounted shallower (like in the Sonex) I'd go with the header, but mostly the leak/crack potential of the Zenith 16 gal tank scares me.  I hope this comparison was helpful for your decision.



-Doug E





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Gig Giacona

Joined: 10 Jan 2006
Posts: 1416
Location: El Dorado Arkansas USA

Posted: Tue Nov 27, 2007 9:06 am Post subject: Re: Header Tank Wanted

Don't forget to add to the cons list: 16 gals of fuel sitting in the cabin with you.

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W.R. "Gig" Giacona
601XL Under Construction
See my progress at www.peoamerica.net/N601WR

Iberplanes

Joined: 10 Dec 2007
Posts: 174
Location: Igualada - Barcelona - Spain

Posted: Mon Dec 10, 2007 9:28 am Post subject: Re: Header Tank Wanted

Hello there, 



Is it possible to get or buy the plans ? IÂ´m building an XL with extended tanks but I would like to know if a header tank is also possible in case long trips are mandatory. Any ideas to share?



Thanks in advance,

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_________________
Alberto Martin
601 XL - Jabiru 3300
http://www.iberplanes.es
Igualada - Barcelona - Spain

Gig Giacona

Joined: 10 Jan 2006
Posts: 1416
Location: El Dorado Arkansas USA

Posted: Mon Dec 10, 2007 12:41 pm Post subject: Re: Header Tank Wanted

Alberto, the header tank really won't work very well in the 601XL. If you need more fuel get the long range tank option from Zenith.

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_________________
W.R. "Gig" Giacona
601XL Under Construction
See my progress at www.peoamerica.net/N601WR

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