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                           Rocket-List Digest Archive
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                     Total Messages Posted Wed 05/14/03: 2
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Today's Message Index:
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     1. 12:49 PM - Re: plumbing of tip tanks  (Bob & Toodie Marshall)
     2. 07:09 PM - Re: RV-List: More RV-10 PIX  (John Starn)
 
 
 
________________________________  Message 1  _____________________________________


Time: 12:49:46 PM PST US
From: "Bob & Toodie Marshall" <rtmarshall@osbtown.com>
Subject: Re: Rocket-List: plumbing of tip tanks

--> Rocket-List message posted by: "Bob & Toodie Marshall" <rtmarshall@osbtown.com>

Phil, another way to look at the that section of the fuel system, would be
to plumb directly from the tip tanks to a tee  at your new three way fuel
valve, that's three on and one off, the tips are teed together which gives
you, left, right, tips  and off. This would eliminate messing around with
floats etc. Only My opinion. I am sure it will get your attention when the
tips run low!  of course you could run individual valves for the tips or
Whatever?  I know that some of the rocket guys will have an opinion on this.
have fun on those long flights it looks like you might be planning!  Bob  N#
999RM Beckwourth, CA  Do Not Archive----- Original Message -----
From: "Phil Ayrton" <ayrton@ihug.com.au>
Subject: Rocket-List: plumbing of tip tanks


> --> Rocket-List message posted by: "Phil Ayrton" <ayrton@ihug.com.au>
>
> I am building a 180hp RV-4 here in Australia and am currently converting
the
> standard fibreglass tips to tip tanks.
> I am using John Johanson's plans but there's not much information about
> plumbing methods and I think I need help.
> I have a very simple approach to managing this fuel.  I propose gravity
feed
> from tips to mains, actuated by a float shutoff valve in the outer baffle
of
> the main tanks.  Mains and tips vented separately.  Once the level in the
> mains goes down and the float drops, the transfer commences.  Conversely
the
> float valve ensures that no syphon into tip tanks occurs when parked on a
> slope and when fuel is required in mains only.  I propose another
inspection
> cover adjacent to the main tank to allow a spanner for connection, and at
> the tip tank the connection is made just prior to final location.  The
> connection to the tip is a 90deg fitting with a finger strainer inside
lying
> along the bottom of the tank adjacent to the main spar area, which should
be
> the lowest point when in the flying attitude.
>
> Now my question.......in the outer wing bay I am proposing a 30deg bend
> forward in the alum fuel line, then after 2-3" a 30 deg bend back again,
to
> provide a "kink" to allow for expansion and contraction, and to ensure
that
> not too much strain is placed on either the fuel line or tank baffles.
Does
> this sound sensible or is there a better way.  I dont want to reinvent the
> wheel if I can help it.....thanks for any assistance.
>
> Phil Ayrton
> Wollongong, Australia
>
>






________________________________  Message 2  _____________________________________


Time: 07:09:20 PM PST US
From: "John Starn" <jhstarn@earthlink.net>
Subject: Rocket-List: Re: RV-List: More RV-10 PIX

--> Rocket-List message posted by: "John Starn" <jhstarn@earthlink.net>

Using that logic where does the HR2 or F-1 fit in. KABONG  Do Not Archive

----- Original Message -----
From: "Doug Rozendaal" <dougr@petroblend.com>
Subject: Re: RV-List: More RV-10 PIX


> then alpha, of course ;-) )  Sorry, but I think the RV-3 still has the
best
> lines in the fleet