VansAirForceForums  
Home > VansAirForceForums

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

- Today's Posts | Insert Pics

  #1  
Old 03-22-2012, 09:58 PM
fabricflyer fabricflyer is offline
 
Join Date: May 2011
Location: Tylertown, MS
Posts: 186
Default Wing Rear Spar trim question

Just wondering, how close are the measurements, on drawing 38, they give on trimming the rear spar so it will fit into F-705 bulkhead? Will I be safe if I cut to those measurements shown on the REAR SPAR TRIM DETAIL? I don't want to cut to those measurements and then come up short on length.

Thanks for any replies.
Allen
Reply With Quote
  #2  
Old 03-22-2012, 10:11 PM
hydroguy2's Avatar
hydroguy2 hydroguy2 is offline
 
Join Date: Sep 2006
Location: Townsend, Montana
Posts: 3,179
Default

I cut mine to the plans numbers



__________________
Retired Dam guy. Life is good.
Brian, N155BKsold but bought back.
Reply With Quote
  #3  
Old 03-22-2012, 10:38 PM
jmjula's Avatar
jmjula jmjula is offline
 
Join Date: Oct 2005
Location: Portland, OR
Posts: 180
Default

Plans are good, had plenty of edge distance to spare too. I did have to trim the upper inside corner to clear a rivet head on each side, see here: http://jmjula.home.comcast.net/~jmju...g_drilling.jpg
__________________
James Jula - CFI/II/MEI - N713JL RV-7A First Flight 10/12/15 - "What is chiefly needed is skill rather than machinery." Wilbur Wright, 1902
Reply With Quote
  #4  
Old 03-23-2012, 09:25 PM
fabricflyer fabricflyer is offline
 
Join Date: May 2011
Location: Tylertown, MS
Posts: 186
Default

Thanks guys,
That answers my question.
Reply With Quote
  #5  
Old 03-24-2012, 08:39 AM
LettersFromFlyoverCountry's Avatar
LettersFromFlyoverCountry LettersFromFlyoverCountry is offline
 
Join Date: Jan 2005
Location: St. Paul, MN.
Posts: 4,792
Default

The measurements are fine. Just be sure you're reading those measurements off the plans carefully. There's almost no room for error here.

Ask me how I know.
__________________
Bob Collins
St. Paul, MN.
Blog: Letters From Flyover Country
RV-12iS Powerplant kit
N612EF Builder log (EAA Builder log)
Reply With Quote
  #6  
Old 03-24-2012, 10:39 AM
instructor_bill instructor_bill is offline
 
Join Date: Jul 2009
Location: Petaluma, CA
Posts: 233
Default the measurements are fine

A few important lessons learned here before drilling were priceless.

Measure twice, cut once. check, double check.
Be precise when trimming the rear spars.
replace the rivet above the rear spar with a flush rivet.
Clearly mark edge distance allowance on spar.
set incidence and clamp
drill to #30 and cleco, recheck incidence, and check edge distance
drill undersize and ream to final size


I must have looked at 15 builder's write-ups before drilling, then called vans and looked at more.

then drilled to final size.

It would seem that the biggest source of edge distance woes come from spar cutting errors.
__________________
Bill Mason

RV7 SB in construction
Avionics, Wiring, FWF, interior, and paint to go.

Last edited by instructor_bill : 03-25-2012 at 10:33 AM.
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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 05:36 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.