Today's Message Index:
----------------------
1. 05:17 AM - Re:Longerons Shaping (jelliott@mindspring.com)
2. 06:44 AM - Re: Longerons (Mark Taylor)
3. 06:51 AM - Re: Longerons (Hopperdhh@AOL.com)
4. 07:00 AM - Re: Re:Longerons Shaping (Hopperdhh@AOL.com)
5. 07:08 AM - Re: Longerons (Hopperdhh@AOL.com)
6. 07:43 AM - Re: Re:Longerons Shaping (Norman Younie)
7. 08:25 AM - Re: Re:Longerons Shaping (Dan Checkoway)
8. 08:51 AM - Re: Re:Longerons Shaping (Hopperdhh@AOL.com)
9. 09:26 AM - Re: Re:Longerons Shaping (Dan Checkoway)
10. 10:51 AM - Re: Re:Longerons Shaping (Hopperdhh@AOL.com)
11. 11:17 AM - Re: Re:Longerons Shaping (Dana Overall)
12. 07:10 PM - ExperimentalAero Website and Email (Merems)
Message 1
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| Subject: | Re:Longerons Shaping |
--> RV7-List message posted by: jelliott@mindspring.com
Hi,
I will be doing the slow build fuse - Glad to hear my 4 day class with Kent
"the Tinman" White of TMTECHLOGIES.COM fame will help. Our first assignment
on day one was hammering a stright piece of Al with an L shape to fit a curve
Kent drew on the table. It requires age old metal work technique of stretching
the metal to form the bend by expanding the metal in one part to bend in another.
Makes me look forward to this task. Felt like it took me forever to do the
first one. Then was able to redo the second one in about 20 minutes once I learned
where to hit to make the metal move.
Good luck,
John
Message 2
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--> RV7-List message posted by: "Mark Taylor" <mtaylor@msxi.com>
I think I drilled one once attaching an adel clamp.....
Mark Taylor
>>> vernw@pdq.net 03/24/04 02:49PM >>>
--> RV7-List message posted by: vernw@pdq.net
What's all these "longerons" everyone's talking about?
Vern
RV7-A QUICKBUILD :-)
> --> RV7-List message posted by: "Brooks Wolfe"
> <slipstream13@earthlink.net>
>
>
> Lucky quickbuilders! Er, I mean yeah, what a bunch of pansies!
Anyway,
> I
> think I have 'em pretty well figured out -- Just had to vent a bit
last
> night. I used the technique outlined in the directions, and checked
a few
> web pages to see if anyone had any brilliant insights (including
yours,
> Dan)
> It seems perseverance and patience are the big requirements.
>
> Brooks
> do not archive
>
> -------Original Message-------
>
> From: rv7-list@matronics.com
> Date: 03/23/04 20:00:42
> To: rv7-list@matronics.com
> Subject: Re: RV7-List: Longerons
>
> --> RV7-List message posted by: "Dan Checkoway" <dan@rvproject.com>
>
> QB fuselages come mostly riveted already...yeah, the longerons are
> pre-bent,
> pre-drilled (afaik), etc. What wusses! Juuust kidding. 8-)
>
> Just keep at it and you'll get 'em. A little bit at a time. It can
take
> a
> LOT of iterations to get 'em perfect. What technique are you using
to
> bend
> them?
>
> http://www.rvproject.com/20021001.html (photos and commentary on
the
> process)
>
> do not archive
> )_( Dan
> RV-7 N714D
> http://www.rvproject.com
>
> ----- Original Message -----
> From: "Brooks Wolfe" <slipstream13@earthlink.net>
> To: <rv7-list@matronics.com>
> Subject: RV7-List: Longerons
>
>
>> --> RV7-List message posted by: "Brooks Wolfe"
> <slipstream13@earthlink.net>
>>
>> Does the quickbuild fuselage kit come with preformed longerons?
These
>> things are pretty frustrating.
>>
>> When I started the fuselage, the instructions mention as how
everything
>> is
>> cut so precisely so as to not require jigging -- just put it all
>> together
> on
>> some sawhorses and it must fit. Then, four pages later, these same
set
>> of
>> instructions are calling for "artistry" and "finesse" in order to
get
>> the
>> longerons perfect. Argh!
>>
>> Brooks
>>
>>
>
>
Message 3
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--> RV7-List message posted by: Hopperdhh@aol.com
For Don and Paul, and anyone else who can use it:
Before using the following procedure, please be sure you understand what you
are doing.=A0 I don't want to be held responsible for anyone messing up their
project.=A0 If you have any doubts about whether this system works, stop and do
it
some other way!=A0 This method worked for me and I think it is pretty valid,
although admittedly not perfect.=A0 The math should be accurate, but there is
always some uncertainty about exactly where the bend takes place, so be careful.=A0
Having said that, here it is.
Enjoy,
Dan Hopper
RV-7A (almost done)
Longeron Bending Procedure:
Use a fairly heavy vise -- mine has 3 and a half inch jaws, bigger would be
fine.=A0 The vise should be securely mounted to a work bench.=A0 Make up some
hardwood pads for the jaws and file a radius across the top of one of them to fit
the inside radius of the longeron angle.
Put marks with a Sharpie pen on the longeron starting at 38 7/16 inches (see
DWG 18) from the end.=A0 Make 32 marks and label them 0 to 31.
Put the longeron in the vise with the number 1 mark at the edge of the vise
where you are going to bend it.=A0 Push and hammer on the longeron until the end
moves the amount called for.
Make sure the unbent portion is still level, then using 2 adjustable
wrenches, twist the angle about an inch from the vise to bring the front part back
to
level.=A0 Check the measurement again and adjust if necessary.
Move the longeron one inch and repeat until you've done it 31 times.=A0 It
should then fit the side skirt close enough that you can hand bend it for the
final fit.=A0 Remember that the side skirt will overhang the longeron by .032 inch.
When using the following data, the measurement is made perpendicular to a
straightedge held along the unbent portion of the longeron horizontally level in
a vise out to the end of the longeron.
0=A0 0
1=A0 .289
2=A0 .585
3=A0 .888
4=A0 1.199
5=A0 1.517
6=A0 1.842
7=A0 2.175
8=A0 2.515
9=A0 2.863
10=A0 3.217
11=A0 3.579
12=A0 3.948
13=A0 4.324
14=A0 4.708
15=A0 5.098
16=A0 5.496
17=A0 5.901
18=A0 6.313
19=A0 6.732
20=A0 7.158
21=A0 7.591
22=A0 8.031
23=A0 8.478
24=A0 8.932
25=A0 9.393
26=A0 9.86
27=A0 10.335
28=A0 10.816
29=A0 11.305
30=A0 11.8
31=A0 12.302
The following BASIC program is provided for those who want to fine tune the
method.=A0 Note that the angles are in radians
L is the length of the unbent longeron, which for the RV-7 is 38 7/16
inches.=A0 R is the radius of the bend, which I obtained from measurements made
on the
F-721B canopy side skirts and subtracting .032.=A0 While this radius may not be
exact, it is close enough to get good results.
2 REM "LONGBND2.BAS"
3 REM "DAN HOPPER 1/7/03"
5 PI3.141592654
10 L38.4375
20 R134.9
30 FOR C0 TO 31
40 AC/R
50 XR*SIN(A)
60 HR-SQR(R*R-X*X)
70 ZL*SIN(A)
80 OH+Z
90 OTINT((O+.0005)*1000)/1000
91 PRINT C;OT
100 NEXT
Regards,
Dan Hopper
RV-7A (almost done)
In a message dated 3/25/04 5:11:38 AM US Eastern Standard Time,
loclas@hotmail.com writes:
>
> Please supply your specs for the longerons.
>
> Thanks,
> Don Hostetler
>
>
Since I hope to be bending my longerons sometime this summer, I would be
most happy to obtain any specs. that would facilitate the process.=A0 \Paul,
RV-7A
In a message dated 3/25/04 12:52:34 AM US Eastern Standard Time,
pablo@phonewave.net writes:
> ----- Original Message -----
> From: <Hopperdhh@AOL.com>
> To: <rv7-list@matronics.com>
> Subject: Re: RV7-List: Longerons
>
> Since I hope to be bending my longerons sometime this summer, I would be
> most happy to obtain any specs. that would facilitate the process. \Paul,
> RV-7A
Message 4
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| Subject: | Re:Longerons Shaping |
--> RV7-List message posted by: Hopperdhh@aol.com
John,
Share your secret with us. Where do you hit the longeron to keep it from
twisting?
Dan
RV-7A
In a message dated 3/25/04 8:23:37 AM US Eastern Standard Time,
jelliott@mindspring.com writes:
> --> RV7-List message posted by: jelliott@mindspring.com
>
> Hi,
> I will be doing the slow build fuse - Glad to hear my 4 day class with
> Kent "the Tinman" White of TMTECHLOGIES.COM fame will help. Our first
> assignment on day one was hammering a stright piece of Al with an L shape to
fit a
> curve Kent drew on the table. It requires age old metal work technique of
> stretching the metal to form the bend by expanding the metal in one part to bend
> in another.
> Makes me look forward to this task. Felt like it took me forever to do
> the first one. Then was able to redo the second one in about 20 minutes once
I
> learned where to hit to make the metal move.
> Good luck,
> John
>
>
Message 5
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--> RV7-List message posted by: Hopperdhh@aol.com
For some reason (I don't think I'll ever understand computers!) all the equal
signs were deleted from the BASIC program. You can see all that extra stuff
in the text too. If you can't make out the data, I'll email it directly to
anyone who wants it.
Dan Hopper
RV-7A (almost done)
Message 6
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| Subject: | Re:Longerons Shaping |
--> RV7-List message posted by: "Norman Younie" <rv6capt@pacificcoast.net>
If you follow Van's instructions; you will have no problems what so ever in
shaping the longerons. I have built three so far and had no problems with
the first or last one.
----- Original Message -----
From: <Hopperdhh@AOL.com>
Subject: Re: RV7-List: Re:Longerons Shaping
> --> RV7-List message posted by: Hopperdhh@aol.com
>
>
> John,
> Share your secret with us. Where do you hit the longeron to keep it from
> twisting?
> Dan
> RV-7A
>
> In a message dated 3/25/04 8:23:37 AM US Eastern Standard Time,
> jelliott@mindspring.com writes:
>
> > --> RV7-List message posted by: jelliott@mindspring.com
> >
> > Hi,
> > I will be doing the slow build fuse - Glad to hear my 4 day class with
> > Kent "the Tinman" White of TMTECHLOGIES.COM fame will help. Our first
> > assignment on day one was hammering a stright piece of Al with an L
shape to fit a
> > curve Kent drew on the table. It requires age old metal work technique
of
> > stretching the metal to form the bend by expanding the metal in one part
to bend
> > in another.
> > Makes me look forward to this task. Felt like it took me forever to
do
> > the first one. Then was able to redo the second one in about 20 minutes
once I
> > learned where to hit to make the metal move.
> > Good luck,
> > John
> >
> >
>
>
Message 7
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| Subject: | Re:Longerons Shaping |
--> RV7-List message posted by: "Dan Checkoway" <dan@rvproject.com>
> If you follow Van's instructions; you will have no problems what so ever
in
> shaping the longerons. I have built three so far and had no problems with
> the first or last one.
I agree...don't know what the fuss is all about. No reason to make a
mountain out of a molehill. Just do it! The printed template and the
fuselage side skin top edge are all you need to confirm you got it right.
Wake up call!
Put it in a vise, pull/twist on the end, and hit it! Hit it close to the
vise.
Don't want it to twist while bending? Twist against it while you hit it.
Don't want it to bend while twisting? Bend against it while you hit it.
It's just a weensy 1/8" angle, it's not like we're forming it from some
massive piece of unwielding material.
Sorry, I don't mean to come off too strong here, but it's not rocket
science!
)_( Dan
RV-7 N714D
http://www.rvproject.com
Message 8
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| Subject: | Re:Longerons Shaping |
--> RV7-List message posted by: Hopperdhh@aol.com
In a message dated 3/25/04 11:29:56 AM US Eastern Standard Time,
dan@rvproject.com writes:
> Wake up call!
>
> Put it in a vise, pull/twist on the end, and hit it! Hit it close to the
> vise.
>
> Don't want it to twist while bending? Twist against it while you hit it.
> Don't want it to bend while twisting? Bend against it while you hit it.
>
> It's just a weensy 1/8" angle, it's not like we're forming it from some
> massive piece of unwielding material.
>
> Sorry, I don't mean to come off too strong here, but it's not rocket
> science!
>
> )_( Dan
> RV-7 N714D
> http://www.rvproject.com
>
Geesh, does that seem complicated to you? I think for the most part I said
the same thing you did. I just gave some more information that may help some
people who need a more defined target. Some of us need a little more guidance
than "pull/twist on the end and hit it!"
Dan Hopper
RV-7A (almost done)
Message 9
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| Subject: | Re:Longerons Shaping |
--> RV7-List message posted by: "Dan Checkoway" <dan@rvproject.com>
> Geesh, does that seem complicated to you? I think for the most part I
said
> the same thing you did. I just gave some more information that may help
some
> people who need a more defined target. Some of us need a little more
guidance
> than "pull/twist on the end and hit it!"
Sorry, didn't mean to offend. But yeah, it does seem a lot more complicated
than just using the paper template.
do not archive
)_( Dan
Message 10
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| Subject: | Re:Longerons Shaping |
--> RV7-List message posted by: Hopperdhh@aol.com
Dan C.,
Actually, I learned something from all this. I didn't know that you could
prevent the twist by twisting while you hammer. I'll definitely try that next
time.
Thanks,
Dan Hopper
RV-7A (almost done)
In a message dated 3/25/04 12:36:56 PM US Eastern Standard Time,
dan@rvproject.com writes:
> --> RV7-List message posted by: "Dan Checkoway" <dan@rvproject.com>
>
> >Geesh, does that seem complicated to you? I think for the most part I
> said
> >the same thing you did. I just gave some more information that may help
> some
> >people who need a more defined target. Some of us need a little more
> guidance
> >than "pull/twist on the end and hit it!"
>
> Sorry, didn't mean to offend. But yeah, it does seem a lot more complicated
> than just using the paper template.
>
> do not archive
> )_( Dan
>
Message 11
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| Subject: | Re:Longerons Shaping |
--> RV7-List message posted by: "Dana Overall" <bo124rs@hotmail.com>
I guess I've got to agree with Dan C. and Dan H. in they both got it done
their own way. I leaned more to Dan C., just put the thing in a vise, twist
or pull the direction you want it to go and smack it. I did it with a
plastic camping mallet, no big deal at all. I used 3M-77 to glue the
template to a piece of cardboard and just bent a little until it fit the
template, installed it and twisted until it fit the firewall. I've got
agree, it ain't rocket science just smack it and move on..........it's not a
big deal:-)
Dana Overall
Richmond, KY i39
RV-7 slider, Imron black, "Black Magic"
Finish kit
13B Rotary. Hangar flying my Dynon.
http://rvflying.tripod.com/aero1.jpg
http://rvflying.tripod.com/aero3.jpg
http://rvflying.tripod.com/blackrudder.jpg
do not archive
Find a broadband plan that fits. Great local deals on high-speed Internet
access.
https://broadband.msn.com/?pgmarket=en-us/go/onm00200360ave/direct/01/
Message 12
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<rv8list@yahoogroups.com>, <rv7-list@matronics.com>,
<RV7and7A@yahoogroups.com>, "RV10 Group" <RV10@yahoogroups.com>
| Subject: | ExperimentalAero Website and Email |
--> RV7-List message posted by: "Merems" <merems@cox.net>
ExperimentalAero's website and email have been having connection problems for the
last few weeks. The site and email has switched to a new server and should
be more reliable.
For those who have tried to email ExperimentalAero and haven't received any reply
it is due to the intermittent loss of service. Please try again now that EA
is on a new server. You don't want to miss out on the new DRDT-2 dimpling tool.
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