· Home    · The Gallery    · Contact     · View Site Map                

 
Link Indicator
Link Indicator
Outline
Link Indicator
Cut-out Diagram
Link Indicator
3-View Drawings
Link Indicator
Chip Cotton's Skybolt
Link Indicator
Link Indicator
My Smoke System
Link Indicator
Link Indicator
Ribs Preparation
Link Indicator
Rib Templates
Link Indicator
Rib Templates Complete
Link Indicator
Wing Tip Bows
Link Indicator
Wing Tip Bows II
Link Indicator
Upper Ribs Complete
Link Indicator
Link Indicator
Lower Wing Rib Construct
Link Indicator
Spar Fabricating
Link Indicator
Drag Wire Blocks
Link Indicator
Right Wing I
Link Indicator
Right Wing II
Link Indicator
Drag Wire Drill Jig
Link Indicator
I-Strut Drill Jig
Link Indicator
Right Wing III
Link Indicator
Right Wing IV
Link Indicator
Right Wing V
Link Indicator
Right Wing VI
Link Indicator
Right Wing VII
Link Indicator
Right Wing VIII
Link Indicator
Right Wing VIIII
Link Indicator
Right Wing X
Link Indicator
Right Wing XI
Link Indicator
Right Wing XII
Link Indicator
Right Wing XIII
Link Indicator
Right Wing XIV
Link Indicator
Right Wing XV
Link Indicator
Right Wing XVI
Link Indicator
Right Wing Almost Done
Link Indicator
Right Wing Done!
Link Indicator
Link Indicator
Spar Fabricating
Link Indicator
Left Wing I
Link Indicator
Left Wing II
Link Indicator
Left Wing III
Link Indicator
Left Wing IV
Link Indicator
Left Wing V
Link Indicator
Left Wing VI
Link Indicator
Left Wing VII
Link Indicator
Left Wing VIII
Link Indicator
Left Wing VIIII
Link Indicator
Left Wing X
Link Indicator
Left Wing XI
Link Indicator
Left wing Done!
Link Indicator
Link Indicator
New Bench
Link Indicator
Splice Join Jig
Link Indicator
Spar Fabrication
Link Indicator
Upper Wing I
Link Indicator
Upper Wing II
Link Indicator
Upper Wing III
Link Indicator
Upper Wing IV
Link Indicator
Upper Wing V
Link Indicator
Upper Wing VI
Link Indicator
Upper Wing VII
Link Indicator
Upper Wing VIII
Link Indicator
Upper Wing IX
Link Indicator
Upper Wing X Done!
Link Indicator
Center Bay & More
Link Indicator
Topsy-Turvy
Link Indicator
Wing Finally Done!
Link Indicator
Link Indicator
Initial Wing Rigging
Link Indicator
Aileron Linkage & I-struts
Link Indicator
More I-struts
Link Indicator
The Welder from Hell
Link Indicator
Link Indicator
Aileron Templates
Link Indicator
Aileron Rib Construct
Link Indicator
Lower Aileron Build I
Link Indicator
Lower Aileron II
Link Indicator
Lower Aileron III
Link Indicator
Lower Aileron IV
Link Indicator
Lower Aileron V
Link Indicator
Lower Ailerons Done!
Link Indicator
Upper Aileron I
Link Indicator
Upper Aileron II
Link Indicator
Upper Aileron III
Link Indicator
Aileron Rib Anomaly
Link Indicator
Upper Aileron IV
Link Indicator
Upper Ailerons Done!
Link Indicator
Link Indicator
Instrument Panels
Link Indicator
More Panel Stuff
Link Indicator
Panels & Tank Painted!
Link Indicator
Throttle Quadrants & Harnesses
Link Indicator
Fitting Gauges
Link Indicator
Adding Shiny Stuff
Link Indicator
Smoke & Instruments
Link Indicator
Link Indicator
Seat Backs & Torque Tube
Link Indicator
Rudder Pedals
Link Indicator
Brakes
Link Indicator
Landing Gear Choices
Link Indicator
Starting Landing Gear
Link Indicator
Landing Gear Progress
Link Indicator
Landing Gear Ready For Tacking
Link Indicator
Gear. Heel Rails. Firewall
Link Indicator
Landing Gear Setting Toe
Link Indicator
Stuff & Landing Gear Done!
Link Indicator
Elbow Rests & Fuel Valve
Link Indicator
Smoke Tank & Fuel System
Link Indicator
Powdered Mount & Standoffs
Link Indicator
Stringers & Torque Tube
Link Indicator
Sheet Metal
Link Indicator
Sheet Metal & Turtle Deck
Link Indicator
Exhaust Ramp
Link Indicator
Upholstery
Link Indicator
Catching Up
Link Indicator
Link Indicator
Stabs Trims & Controls
Link Indicator
Stabs, Trim & Controls II
Link Indicator
Link Indicator
Powerplant
Link Indicator
Nosebowl & Exhaust
Link Indicator
Alternate Air Induction
Link Indicator
Link Indicator
2007 Recap
Link Indicator
2008 Recap
Link Indicator
To weld or not to weld..
Link Indicator
Skybolt Builders Manual
Link Indicator
Fuel Plumbing and...
Link Indicator
Lots of Stuff
Link Indicator
Link Indicator
Skydiving
Link Indicator
Web Design by Beej
Link Indicator
The TSA Sux...
Link Indicator
Visitors from the UK
Link Indicator
Biplane Expo 2008
Link Indicator
Biplane Expo Musings 2009
Link Indicator
Link Indicator
Link Indicator
Aviation Links
Link Indicator
My Favorite Homebuilt Story
Link Indicator
Link Indicator
How We Met
Link Indicator
The Visits
Link Indicator
Our Wedding Day
Link Indicator
About Us
Link Indicator
Oshkosh 2007 Musings
Link Indicator
Link Indicator
Canopy Redux
Link Indicator
Canopy II
Link Indicator
Link Indicator
Rudder Covering
Link Indicator
Fabric Work
Link Indicator
Link Indicator
Firewall Aft Work
Link Indicator
Instrument Panel Done
Link Indicator
Link Indicator
Link Indicator
 
short solo movie clip Latest Posts
9/6/2017
Fabric Work
1/26/2014
Alternate Air Induction
11/30/2013
Nosebowl & Exhaust
11/22/2013
Powerplant
url for Newsreader:: http://www.65degrees.net/skybolt/rss.asp What's this?
Latest uploaded pic Random Pic
short solo movie clip Movies Clips
My truck pulling days [1.24mb]
First Solo [5.98mb]
Lauries Tandem [9mb]
Latest uploaded pic Random Qoute
It at first you don't succeed, well, so much for skydiving.


Landing Gear Progress
11/5/2009

click for larger image
Gear truss ready for tack welding...
Slowly but surely, I am getting there. the RV landing gear mod is well underway and I am now beginning to see the light at the end of the tunnel.

I initially (wrongly) assumed the landing gear sockets were a single thick tube, reamed up to marry with the legs, not so. After some digging and poking around in actual RV7 leg sockets, I realized there was a sleeve in each end of the socket. This gave the false impression from the outside that the sockets were around 1/8 wall thickness, when in fact the main tube socket was about half that with the thickness being made up by the sleeves that go in either end. I never did find out why they are sleeved, it is either due to weight saving, or the fact that the gear leg inside the tube flexes somewhat under loads so some space is required in there, or maybe a combination of both.

For more cross referencing, I took a long look at acropilotbret's (member on biplaneforum.com) Pitts RV gear mod, specifically the engine mount area. I couldn't copy verbatim, since the Pitts gear does not sweep back like on the Skybolt, so forces will be from a different direction. But his blog and a drawing he has on the blog came in handy, not to mention the build pics he has up there. Thanks Bret.

A machinist friend made me the sleeves. These were rosette welded in place by a TIG buddy. He had to first make a temporary insert to fit into the sleeve while the sleeve was being welded to the outer tube. The I.D. of the sleeves were purposely left slightly under size (0.010) so I could eventually sneak up on the final fit with a reamer.

The sockets were now ready to be part of a truss. I laid out the truss design on MDF, taking measurements and angles from the dry mock-up I had created on the fuselage. The tube notching turned out to be very accurate and neat, thanks to a tube notching online application. I just punched the variables (angle, tube O.D.'s etc) into an online form, and the form outputs a printable drawing which one cuts out and glues to the tube, then simply cut around the printed guidelines. It worked great. Tube notching software.

Once tacked, I took the truss to my TIG buddy, Seth, who did a nice job (as per usual) finishing the welds. For reaming to final size, I had purchased an adjustable reamer specifically for the task. I welded a two foot tube to the end of the reamer for leverage. It actually took me half a day to ream out the two sockets since I was removing only a thou at a time. By lunchtime I had arms like Popeye and was covered in sweat and cutting oil.

Now here came the tough part, I needed to drill the locating AN5 bolt hole at the top of each leg socket. Drilling through the socket and the leg meant I had only one chance to get this right. The first thing I needed was a nice flat surface, so I had to make one. I basically made an MDF box with supports, all cut at the same table saw fence setting for consistency. With the gear and truss laid out on the box, I clamped down the axles tightly, so they would be in the same plane. Initially I was scratching my head as to how to drill square and true, the whole work piece was too heavy and big to set up on the drill press, then it dawned on me...take the mountain to Mohammed. I set the drill press up on the floor, and voila. I started with 1/16, then basically worked up to a .300 bit. Then I finished with a 5/16 'under-size' reamer (AN5 bolts are well under at around .308-.310 it seems). There is probably a little run-out on the drill press, so it transpired that a AN175 close tolerance bolt fitted perfect for a snug 'tap-it-in' fit, phew!.

I have been making full use of the rotisserie on the fuselage, lots of welding tabs here and there and cutting off the legacy steel from the old bungee gear (gear truss, and ears for the leg attachments etc).

The next step is to remove the fuselage from the rotisserie and jig everything back up ready for dry fitting/cutting the engine mount along with the landing gear and truss for its final fit, then tack weld everything.
Taking the press
Taking the press 'to' the work piece...
Woody, making the socket sleeves...
Woody, making the socket sleeves...


Latest uploaded pic Latest Pics
11/30/2013
go to page entryExtending and repairing the nose bowl.....
11/22/2013
go to page entryOn arrival.....
Latest uploaded pic Progress Diagram
click to view large diagram
- Latest Stuff
RSS Feed Reader
- The Real News
RSS Feed Reader
 Local TX Weather
Georgetown Weather Advisory:
RSS Feed Reader
Overcast and 72 F.
Winds: from the South at 13.
Pressure: ".
Humidity: 84%.
Heat Index: .
Updated: Nov 18 2017, 2:56 am CST.
65degrees.net 2017. All rights Reserved. Web Design by 65degrees.net.
.