Today's Message Index:
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1. 07:00 PM - Re: SEC: UNCLASSIFIED tip tanks, continued (Francis, David CMDR)
2. 07:51 PM - New dimpling tool for RV builders-ExperimentalAero (Merems)
Message 1
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| Subject: | tip tanks, continued |
--> RV7-List message posted by: "Francis, David CMDR" <David.Francis@defence.gov.au>
Len,
I am just back from Oshkosh, hence the delay in reply. Contact john Johanson
direct at Jon Johanson [jonj@senet.com.au]. He has good documentation which
I will email to you offline.
Regards, David Francis.
-----Original Message-----
From: Len Loudis [mailto:n713ml@yahoo.com]
Sent: Sunday, 20 July 2003 06:50
To: rv7-list@matronics.com
Subject: RV7-List: tip tanks, continued
--> RV7-List message posted by: Len Loudis
<n713ml@yahoo.com>
Folks,
Thanks for the thoughts. Couple more questions: 1) I do not
have a
clue how to reach Johanson for literature, etc, and can't
find him on
the web. Is Van's his only outlet? 2) In terms of plumbinq
QB, are the
tips flowing directly into the mains via a check valve of
some sort? Or
plumbed through a four-tank fuel selector as in my Piper
Cherokee
235-C?
3) Any information on whether Johanson will be at OSH?
Thanks,
Len
> From: "Francis, David CMDR" <David.Francis@defence.gov.au>
> Subject: SEC: UNCLASSIFIED RE: RV7-List: Tip tanks
>
> Len,
> I am going for the Johanson tanks, which are now in
production for
> the RV7/8
> sheared tips. I saw the prototype and they look excellent
quality.
> Price is
> A$3500.00.
>
> There are alternatives:
> Roll your own tips by installing a membrane or coating in
the Vans
> tips, and
> add necessary bulkhead, filler, drain and exit plumbing, &
nav lights
> if
> applicable. The Vans tips are permeable to fuel. So the
membrane,
> coating &
> bulkhead will reduce your fuel capacity by a litre to two
compared to
> the
> Johanson tanks, which are made of fuel proof fibreglass.
>
> Also someone somewhere installed a aluminium pipe tank in
the leading
> edge
> of a RV. Very neat, holds about 8USG each, the tube tank
slides into
> the
> leading edge rib lightening holes.
>
> Both the Johanson and tube tanks do not seem to require
strengthening
> of the
> outer spar. These options are cheap but labour intensive.
>
> VH-VIL has tip tanks plus two aluminium wedge shaped tanks
that fit
> in the
> triangle behind the seat backs, just over the flap
mechanism. They
> are
> removable and leave most of the baggage compartment free
for, guess
> what -
> baggage. Easy to build in aluminium, cheap, but gives aft
c of g and
> also
> reduces your baggage weight allowance. Fuel in the wings &
tips is
> the most
> structurally efficient place to carry fuel due to lack of
wing
> bending
> moment. These tanks were very neat and well thought
through.
>
> I have also seen one Australian RV6 with four leading edge
tanks. He
> wishes
> to fly to Oshkosk across the big puddle. With 80 odd
usgallons per
> wing he
> had to strengthen his outer wing spars and his bladder. He
has a
> removable
> tank for the right seat giving over 20 hrs endurance. He
is thinking
> of a
> sleeper seat too!
>
> Regards, David Francis, tipping the canoe of VH-ZEE,
Canberra,
> Australia.
>
> -----Original Message-----
> From: Len Loudis
[mailto:n713ml@yahoo.com]
> Sent: Thursday, 17 July 2003 10:03
> To: rv7-list@matronics.com
> Subject: RV7-List: Tip tanks
>
> --> RV7-List message posted by: Len Loudis
> <n713ml@yahoo.com>
>
> I would welcome thoughts on installation
of tip tanks
> on my
> -7A. Given
> my mission for the plane, that is my
intent. I am
> less
> certain about
> plumbing into QB wings (still open),
whether there
> are
> alternatives to
> the Johannsen tanks (as listed in the Vans
catalog),
> and so
> forth. So
> please feel free to ramble on
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
=== message truncated ===
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Message 2
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<rv8list@yahoogroups.com>, <rv7-list@matronics.com>,
<RV7and7A@yahoogroups.com>
| Subject: | New dimpling tool for RV builders-ExperimentalAero |
--> RV7-List message posted by: "Merems" <merems@cox.net>
RV-7/8/9 Builders,
I have developed a new dimpling tool that is easier, faster and safer (on the skins)
then any other tool offered by existing aircraft tool suppliers. I have
designed it to accommodate all the skins used in a RV including the prebent leading
and trailing edge skins. I am in the process of developing a website called
ExperimentalAero.com. On this website you will find innovative tools and
components for your experimental project. In particular I am announcing the DRDT-1
and offering it to those interested. I have listed estimated prices based
on three option scenarios. Please take the time to look at the site, give me
your feedback and let me know which products are of interest. Keep in mind that
the site is a work in progress, so let me know if you find any errors.
Thanks,
Paul Merems
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