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01-30-2019, 10:02 PM
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Join Date: Jan 2016
Location: Southwest
Posts: 1,108
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Ya
I doubled sided taped them to a board, actually the wing crate turn on edge, and bent using the longeron dies. Came out great easily within a 1/32?. For the other side i turned the plans over, trace the shape using a french curve drafting tool, doubled taped to crate and bent away. NOt nearly as difficult as i imagined.
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John S
WARNING! Information presented in this post is my opinion. All users of info have sole responsibility for determining accuracy or suitability for their use.
Dues paid 2020, worth every penny
RV9A- Status:
Tail 98% done
Wings 98% done
Fuselage Kit 98% done
Finishing Kit 35% canopy done for now
Electrical 5% in work
Firewall Forward 5% in work
www.pilotjohnsrv9.blogspot.com
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01-31-2019, 09:57 AM
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Join Date: Aug 2017
Location: USA
Posts: 122
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Speaking of bending longerons; anyone have the -7 bending dies they no longer need and can donate them to another-7 builder? I'll return them when finished...or pass them on to the next builder.
Much obliged.
(My apologies to the original poster for hi-jacking this thread...)
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01-31-2019, 12:54 PM
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Join Date: Jun 2016
Location: Livermore, CA
Posts: 397
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For the benefit of future builders, if you choose to use the F-721 deck piece as the template for the bend, make sure you position the piece at the correct location on the longeron or you may end up doing something like this, resulting in having to re-do the longerons. Not fun!
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Ryan Drake
Livermore, CA
https://stiletto.smugmug.com/RV7
Donated 12/16/2019
RV-7A (N12VD): Empennage and wing kits complete minus fiberglass, fuselage and wiring complete. Canopy complete minus fiberglass. Waiting for the engine to come!
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01-31-2019, 01:04 PM
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Join Date: Jan 2005
Posts: 3,642
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Quote:
Originally Posted by rapid_ascent
I just laid the plans on the hangar floor and used them without any modification. I didn't want to destroy the plans by cutting them out.
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Ditto. As long as you have a flat floor I'm not sure there's anything to be gained by gluing the paper to a piece of wood.
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Steve M.
Ellensburg WA
RV-9 Flying, 0-320, Catto
Donation reminder: Jan. 2021
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01-31-2019, 04:19 PM
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Join Date: Oct 2005
Location: Estes Park, CO
Posts: 3,931
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Longerons
The templates are handy but the actual part (F-721B Aft Canopy Deck) should be used as the final comparison.
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Larry Larson
Estes Park, CO
http://wirejockrv7a.blogspot.com
wirejock at yahoo dot com
Donated 12/03/2019, plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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01-31-2019, 08:14 PM
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Join Date: Jul 2016
Location: Worland, Wyoming
Posts: 1,360
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Quote:
Originally Posted by wirejock
The templates are handy but the actual part (F-721B Aft Canopy Deck) should be used as the final comparison.
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Agreed, the templates have been less than accurate in the past, the aft canopy deck is the gold standard on this one.
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Jereme Carne
PPL
RV-7A Emp. done
Wings done
Fuselage done
Finish kit almost done
Exempt but gladly paying!
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02-01-2019, 06:30 AM
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Join Date: Jan 2005
Location: SC
Posts: 12,887
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I glued mine to a piece of 1" nominal (3/4" actual) pine and cut it out with a jig saw.
In hindsight, laying the drawing on my work table would have worked fine.
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Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
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02-03-2019, 11:03 AM
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Join Date: Dec 2015
Location: Auburn, AL
Posts: 200
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Highly highly recommend longeron dies. Money well spent. I loaned mine out, otherwise i?d send them to you. Sounds like you need them now
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Steve T.
CFII/MEI/ATP 737,DC-10
RV-7 slow build
AUO
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02-07-2019, 12:41 PM
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Join Date: Aug 2017
Location: USA
Posts: 122
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Thanks Steve. I have not ordered my fuselage kit as of yet; I plan to do so in March.
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02-23-2019, 11:24 AM
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Join Date: Aug 2014
Location: Edmonton, AB
Posts: 216
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I just finished the big bend using the longeron dies. I found them to be very easy to use and my plans were very close to scale making the bend reliable. They make you the Aluminum Whisperer! ... 
Like everyone says, the second longeron takes way less time than the first. I took it a step further and scanned in the F-721B AFT deck into autoCAD which I then turned into an accurate template I could use for both left and right sides so that makes things goes than much quicker. Biggest regret though is not using a long flat table that supports the whole length of the longeron makes the process go a lot quicker IMHO. Just having a length of the longeron hang off the table really wants to twist the angle (which just added to some of the hours and unnecessary tweaking).
Last edited by Aero_Octaveus : 02-23-2019 at 11:27 AM.
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