Home
Builder Search
Builder Login
KitLog.com    

RECENT ACTIVITY

Previous Builder          Next Builder

Builder:
  Miles Bowen
Location:
  Brighton, MI - USA
Aircraft:
  RV-7
Total Build Hours:
  1791
Web Site:
  http://www.mykitlog.com/longranger/

Date:  09-30-2020
Number of Hours:  1.80
Short Description:  Replacement HS-714 Bends

Bent the “ears” on the HS-714 to the 6-degree angle specified on DWG 3. To get the 1/8” bend radius I clamped the the end of the angle in the vise with an AN4 bolt at the specified bend location and simply pulled on he part to make the bend around the bolt (photo 1). I bent each side until the resulting angle after springback approximately matched the old HS-714. I then set 6 degrees (actually 174) on my machinist’s protractor and made slight adjustments in the bend until the HS-714 matched the protractor. That took about three iterations to get the bend as close as I could read the protractor.

Clecoing the HS-714 into the stabilizer showed the tips of the ears about 0.020 short of laying flush against the HS front spar web, so I did a bit of trigonometry to calculate how far behind the center of the part the tips of the “ears” should be. Sure enough, the measurements showed the the tips were about 0.020” short of making a 6-degree angle. After adjusting the ears to match the trigonometry the HS-714 sat perfectly flush to the spar from one end to the other (photos 2 & 3).

Before riveting the HS-714 in place I still need to final drill it to the spar, then countersink the rivet holes immediately outboard of the centerline so the dimpled holes in the spar web will nest properly.




Bending around an AN4 bolt gives the 1/8" bend radius.





Left ear fits flush to spar.





Right ear fits flush to spar.

Previous Builder          Next Builder




 Recent Builder Activity
Builder Project Date Hours
Carl Orton
750 Cruzer
10-30
749
Chris King
Fokker D.VII
10-30
1860
G.H. "Steve Riffe
RV8
10-30
2664
James Roberts
RV8
10-30
181
Martin Filiatrault
RV-8
10-30
2856
Neil Rosoff
EX-3
10-30
242
Peter Calley
Sling4
10-30
2353
Rick McBride
RV-10
10-30
2335
Bob Corriveau
RV-8
10-29
1950
Carl Peterson
A QB
10-29
171
Keith Borgstrom
Sonex
10-29
363
Mark Johnson
RV-10
10-29
30
Peter McBain
RV-9A
10-29
1512
Nathaniel Jackson
RV-7
10-28
562
Bob Collins
RV-12iS
10-27
730
Franklin Gaxiola
RV-12iS A
10-27
3492
Gordon Porter
Lancair Super ES
10-27
3823
Greg Long
RV-12
10-27
1466
John Peck
C120
10-27
332
Sean Smith
CX5
10-27
1139
Des Howson
Sling 2 Taildragger
10-26
2361
Johnathan Wiltberger
Patrol
10-26
151
Rick Crisenbery
S20
10-26
338
Brian Perry
RV-14a
10-25
988
David LeFrancois
Cozy MKIV
10-25
10
Tony Rose
RV-6A
10-25
506
John D Hazen
RV-12iS
10-23
988
Norris Brown
RV10
10-23
1484
Jim Novak
RV-8
10-21
2226
Marlin Sander
RV-7A
10-21
3831

Projects Uploaded: 1493
Logs Uploaded: 262213








Copyright © 2001-2020 Matronics. All Rights Reserved. Privacy Policy.