VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics


Go Back   VAF Forums > Main > RV General Discussion/News
Register FAQ Members List Calendar Today's Posts

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 06-28-2009, 01:27 AM
WingsOnWheels WingsOnWheels is offline
 
Join Date: Mar 2009
Location: Plano, TX
Posts: 2,088
Default Ok, now I'm a bit confused - Flap Question

Or make that flappin' confused..

Model: RV-6x
Reference: FL-606 Assembly

Background:

During assembly of the Flap, the inboard end of the flap spar is cut at an angle (works out to ~83 degrees: ~ -7 from vertical).

FL-606A is made from a 1.5 x 2 x 3 in bit of angle and attaches to the face of the flap spar at the inboard end. Nothing is specified in the builders manual or called out plans, but the plans appear to have the face of the angle at the same ~83 degrees and flush with the end of the spar (which makes sense).

FL-606C is fabbed from .75 x .75 angle and is attached inside of the lower flange on the inboard rib.

FL-606B is .125 sheet and attaches across 606A and C

Issue:

So here is what is causing my issue. If the flange on 606A is at 83 degrees and the flange on 606C is at 90 degrees, how is 606B going to sit flush across both these surfaces? Did I make a mistake by matching the angle of 606A with the cut of the spar? Am I somehow supposed to bend 606C to match the slope of the spar? Something is not adding up here.

Example picture: Note - the forward/aft taper of 606C hasn't been finalized or the edges deburred, but I think you get the jist of where I am going with this.

__________________
Colin P.
RV-6A #20603
Complete 5/10/19
PP SEL / A&P
I donate every year on my B-Day (in Dec), but donated early in Sep'19.
Reply With Quote
  #2  
Old 06-28-2009, 01:47 AM
az_gila's Avatar
az_gila az_gila is offline
 
Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
Smile Yes... squeeze the 606C angle

Quote:
Originally Posted by WingsOnWheels View Post
Or make that flappin' confused..

Model: RV-6x
Reference: FL-606 Assembly

Background:

During assembly of the Flap, the inboard end of the flap spar is cut at an angle (works out to ~83 degrees: ~ -7 from vertical).

FL-606A is made from a 1.5 x 2 x 3 in bit of angle and attaches to the face of the flap spar at the inboard end. Nothing is specified in the builders manual or called out plans, but the plans appear to have the face of the angle at the same ~83 degrees and flush with the end of the spar (which makes sense).

FL-606C is fabbed from .75 x .75 angle and is attached inside of the lower flange on the inboard rib.

FL-606B is .125 sheet and attaches across 606A and C

Issue:

So here is what is causing my issue. If the flange on 606A is at 83 degrees and the flange on 606C is at 90 degrees, how is 606B going to sit flush across both these surfaces? Did I make a mistake by matching the angle of 606A with the cut of the spar? Am I somehow supposed to bend 606C to match the slope of the spar? Something is not adding up here.

Example picture: Note - the forward/aft taper of 606C hasn't been finalized or the edges deburred, but I think you get the jist of where I am going with this.

[IMG]....[/IMG]
...gently in a vice to get the 3 degrees extra bend you need to make it all fit together well.
__________________
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
Reply With Quote
  #3  
Old 06-28-2009, 01:55 AM
WingsOnWheels WingsOnWheels is offline
 
Join Date: Mar 2009
Location: Plano, TX
Posts: 2,088
Default

Quote:
Originally Posted by az_gila View Post
...gently in a vice to get the 3 degrees extra bend you need to make it all fit together well.
Thank you sir! That is what I assumed had to happen, but any time that word "assume" goes through my head it is time to ask someone who "knows".
__________________
Colin P.
RV-6A #20603
Complete 5/10/19
PP SEL / A&P
I donate every year on my B-Day (in Dec), but donated early in Sep'19.
Reply With Quote
Reply



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 12:26 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.