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Elevator bending brake

 
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ellismcgaughy(at)gmail.co
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PostPosted: Wed Nov 27, 2013 5:57 am    Post subject: Elevator bending brake Reply with quote
I'm building my second set of rv7a elevators as I found my first set warped by about 1/2" at the inboard trailing edges.

I'm preparing to bend the skins and was wondering if anyone that might live within a hundred miles or so from Fayetteville NC might already have a bending brake I could use. Otherwise, I will plan to dive through all the warped lumber at my local neighborhood hardware store.

Ellis
A&P and Grumman tiger owner.

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george(at)oilhelp.com
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PostPosted: Wed Nov 27, 2013 6:14 am    Post subject: Elevator bending brake Reply with quote
Ellis, I don't know anything about your project other than I plan to buy an already built RV 7 down the road. I have a traveler presently and keep it at my strip in TN at 2tn7. Are you building the RV to replace your tiger?
George
Sent from my iPad

Quote:
On Nov 27, 2013, at 8:57 AM, Ellismcgaughy <ellismcgaughy(at)gmail.com> wrote:



I'm building my second set of rv7a elevators as I found my first set warped by about 1/2" at the inboard trailing edges.

I'm preparing to bend the skins and was wondering if anyone that might live within a hundred miles or so from Fayetteville NC might already have a bending brake I could use. Otherwise, I will plan to dive through all the warped lumber at my local neighborhood hardware store.

Ellis
A&P and Grumman tiger owner.









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ceengland7(at)gmail.com
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PostPosted: Wed Nov 27, 2013 6:46 am    Post subject: Elevator bending brake Reply with quote
On 11/27/2013 7:57 AM, Ellismcgaughy wrote:
Quote:


I'm building my second set of rv7a elevators as I found my first set warped by about 1/2" at the inboard trailing edges.

I'm preparing to bend the skins and was wondering if anyone that might live within a hundred miles or so from Fayetteville NC might already have a bending brake I could use. Otherwise, I will plan to dive through all the warped lumber at my local neighborhood hardware store.

Ellis
A&P and Grumman tiger owner.

I'm not close, but might be able to offer a tip or two on doing the bend

if you build your own bender. 1st, using a dowel (wood, welding rod,
etc) taped into the trailing edge can help with preventing a too-sharp
bend. Also, I found that my home made brake tended to roll the bend
forward on the side that was on top side of the brake. I made the bend
in multiple steps, checking after each step by clecoing the skin onto
one side of the skeleton & checking hole alignment on the other side
while manually pressing the skin down against the skeleton.

Charlie

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dan.pat.b(at)gmail.com
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PostPosted: Thu Nov 28, 2013 6:28 pm    Post subject: Elevator bending brake Reply with quote
EllisI still have the homemade brake I made about 10 years ago out of 2' x 8's and 3.5" hinges - you'd be welcome to it - problem is I'm in Massachusetts - wish I could offer you some advice - as I recall the bending process was pretty straight forward - only thing I can think of is make sure the lumber pieces you make your brake with are perfectly true with not the slightest sign of a warp - keep flipping the skins over after each press to avoid rolling the bend too far forward on one side or the other - good luck and stay with it - 
Dan Bergeron
RV-7A - N307TB
442 hours since first flight
     on Aug 4, 2009  

On Wed, Nov 27, 2013 at 9:45 AM, Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)> wrote:
[quote]--> RV7-List message posted by: Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)>

On 11/27/2013 7:57 AM, Ellismcgaughy wrote:
Quote:
--> RV7-List message posted by: Ellismcgaughy <ellismcgaughy(at)gmail.com (ellismcgaughy(at)gmail.com)>

I'm building my second set of rv7a elevators as I found my first set warped by about 1/2" at the inboard trailing edges.

I'm preparing to bend the skins and was wondering if anyone that might live within a hundred miles or so from Fayetteville NC might already have a bending brake I could use.   Otherwise, I will plan to dive through all the warped lumber at my local neighborhood hardware store.

Ellis
A&P and Grumman tiger owner.


I'm not close, but might be able to offer a tip or two on doing the bend if you build your own bender. 1st, using a dowel (wood, welding rod, etc) taped into the trailing edge can help with preventing a too-sharp bend. Also, I found that my home made brake tended to roll the bend forward on the side that was on top side of the brake. I made the bend in multiple steps, checking after each step by clecoing the skin onto one side of the skeleton & checking hole alignment on the other side while manually pressing the skin down against the skeleton.

Charlie

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