Author: "Luethi, Matt" <mluethi@...> Time: Wed Aug 15, 2001 2:17 pm PDT Link
Hi Kevin, this is a real good point you raise here. Did you contact Van's
about this already?
Matt
-----Original Message-----
From: Kevin Schlosser [mailto:kevinschlosser@m...]
Sent: Thursday, 16 August 2001 9:10 AM
To: RV7and7A@yahoogroups.com
Subject: [RV7and7A] Wings spars stubby???
Hi folks. First time builder / MANY time RC plane builder.
For those of you that built a RV-4 / RV-6, Have you noticed the
difference in length of the root spar stub where it bolts into the
fuselage spar pockets?
I've been looking at the online RV University learning about building
my RV-7 when the pieces arrive in April. I look at some RV-6
projects and the length of the spar stub hanging off the wing jig,
then compare it to the 7 and think there's something missing.
I know from building RC planes that we carry the spars as deep into
the plane as possible. You know, moment arm, strength, etc. I know
an RV will never see the stick slamming gyrations an RC plane sees,
but since my butt is going to sit in that thing, I concern myself
with these things.
I trust Van's implicitly, but wondering why they just didn't extend
that stub to the centerline of the fuse for strength.
Yes, I have the plans here.
-=< PropellerHead >=-
Van's Air Force - World Wide Wing
www.vansaircraft.net
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Author: "Letourneau, David F SITI-IT-ISAA" <dfletourneau@...> Time: Wed Aug 15, 2001 3:10 pm PDT Link
Okay Kevin. What do you mean about the ........ RV University. I haven't found that yet. I also built RC planes for many years in the 80's.
David F. LeTourneau
-----Original Message-----
From: Luethi, Matt [mailto:mluethi@e...]
Sent: Wednesday, August 15, 2001 4:16 PM
To: 'RV7and7A@yahoogroups.com'
Subject: RE: [RV7and7A] Wings spars stubby???
Quote:
Hi Kevin, this is a real good point you raise here. Did you contact Van's
about this already?
Matt
-----Original Message-----
From: Kevin Schlosser [mailto:kevinschlosser@m...]
Sent: Thursday, 16 August 2001 9:10 AM
To: RV7and7A@yahoogroups.com
Subject: [RV7and7A] Wings spars stubby???
Hi folks. First time builder / MANY time RC plane builder.
For those of you that built a RV-4 / RV-6, Have you noticed the
difference in length of the root spar stub where it bolts into the
fuselage spar pockets?
I've been looking at the online RV University learning about building
my RV-7 when the pieces arrive in April. I look at some RV-6
projects and the length of the spar stub hanging off the wing jig,
then compare it to the 7 and think there's something missing.
I know from building RC planes that we carry the spars as deep into
the plane as possible. You know, moment arm, strength, etc. I know
an RV will never see the stick slamming gyrations an RC plane sees,
but since my butt is going to sit in that thing, I concern myself
with these things.
I trust Van's implicitly, but wondering why they just didn't extend
that stub to the centerline of the fuse for strength.
Yes, I have the plans here.
-=< PropellerHead >=-
Van's Air Force - World Wide Wing
www.vansaircraft.net
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ (http://docs.yahoo.com/info/terms/)
Van's Air Force - World Wide Wing
www.vansaircraft.net
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service (http://docs.yahoo.com/info/terms/).
(end of quote)
Author: "Whistman, Troy J." <troy.whistman@...> Time: Thu Aug 16, 2001 7:23 am PDT Link
I like how AOPA's latest Student Pilot issue describes the process of utilizing bathroom reading time. You certainly can learna lot during those moments...
"carpe commodium"
-----Original Message-----
From: Kevin Schlosser
Subject: [RV7and7A] Re: Wings spars stubby???
Hopefully I don't need to explain that one :-O Manyevenings of legs
going numb. Kinda like I tell my wife, I'm going to the porcelain
university for a while... be right back. :-)
Author: Dan Masys <dmasys@...> Time: Thu Aug 16, 2001 8:38 am PDT Link
At 03:47 AM 8/16/2001 +0000, you wrote:
>Oops, too many people missed that one. The Internet, RV-List, RV
>White Pages, Builder's sites, wealth of information and all that. I
>call it my Online RV University.
Ditto. It is why I have a laptop connected to a cablemodem in my shop,
with Internet access. Never more than a few clicks away from discovering
that the stupid mistake I just made was made by many others before me... ;-)
And it makes it oh so much easier to order those replacement parts from
Van's website; you don't even have to write the part number down!
Dan Masys
RV7A N868DM (reserved) Riveting HS skins, San Diego, CA
Author: "Kevin Schlosser" <kevinschlosser@...> Time: Mon Aug 20, 2001 11:01 am PDT Link
Here's the official word from Van's...
Also included is an answer on the tip-up canopy stiffeners.
On 16 Aug 01, at 13:34, Kevin Schlosser wrote:
> Hi,
>
> I realize the only stupid questions are the ones that don't get
> asked, and lead to trouble, but...
>
> Q1)
> I'm ordering the first subkit of my RV-7 in April. In the
meantime,
> I'm
> studying up on the builder's manual / preview plans as well as
> reviewing a few dozen sites on the internet. I noticed a difference
> in construction between the RV-6 and RV-7 where the main wing spar
is
> concerned. The spar stub that inserts into the fuselage is pretty
> short compared to the RV-6.
>
> Don't get me wrong. I have complete faith in you folks. You have
a
> proven
> track record. As a prolific builder of radio controlled aircraft
> (small and giant scale), I've learned to carry the spars all the way
> to the center line of the fuselage spar pocket for strength. You
> know, moment arm forces, strength considerations and the like. I
> realize an RV won't see nearly the forces as the stick slamming
> aerobatics on an RC airplane, but I would like to know more about
the
> spar joint area before I proceed. After all, my backside will be in
> that plane, not just a few servos and receiver.
>
> I realize the wing for the RV-7 is basically the RV-8 wing and
there
> are
> many flying along with the beautiful yellow prototype RV-7. I just
> needed some explanation / reassurance that the short spar stub is
> nothing to worry about. I've been over the plans quite a bit in
this
> area and can't resolve this thought lingering in the back of my
head.
> I've asked some other builders if they noticed this, and they were
> curious too.
This is the same arrangement as the 8, so it is well proven. The 6
does not have a strong carry through section, but on the 7 there
are 4 large bars which cary the load through the fuselage. It makes
fitting the wing simpler with no loss of stength over the 6 method.
> Q2)
> I'm also looking all over for a reference to a set of pieces
> installed in
> the prototype RV-7's tip-up canopy. I've seen many high-res
pictures
> off the net from the 'yellow 7'. In the photos where the canopy is
> tipped up, underneath the forward deck (over the panel), there are 3
> reinforcing ribs/gussets with holes in them riveted to the top deck
> and lower forward canopy bulkhead. They are a very smart solution
to
> the old RV-6 fiberglass and plywood approach to stiffening the tip-
up
> canopy. I can't find a reference to these anywhere. Are these
> fabricated by your guys just for the prototype, or are they in the
kit
> or on the plans for us to construct? Since I'm planning a tip-up 7,
> I'd like to know.
They're not in the kit yet, but they will be by the time you get to
that stage.
Gus
--- In RV7and7A@y..., "Kevin Schlosser" <kevinschlosser@m...> wrote:
> Hi folks. First time builder / MANY time RC plane builder.
>
> For those of you that built a RV-4 / RV-6, Have you noticed the
> difference in length of the root spar stub where it bolts into the
> fuselage spar pockets?
>
> I've been looking at the online RV University learning about
building
> my RV-7 when the pieces arrive in April. I look at some RV-6
> projects and the length of the spar stub hanging off the wing jig,
> then compare it to the 7 and think there's something missing.
>
> I know from building RC planes that we carry the spars as deep into
> the plane as possible. You know, moment arm, strength, etc. I
know
> an RV will never see the stick slamming gyrations an RC plane sees,
> but since my butt is going to sit in that thing, I concern myself
> with these things.
>
> I trust Van's implicitly, but wondering why they just didn't extend
> that stub to the centerline of the fuse for strength.
>
> Yes, I have the plans here.
>
> -=< PropellerHead >=-