VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.

  #1  
Old 03-23-2013, 08:21 AM
DonFromTX's Avatar
DonFromTX DonFromTX is offline
 
Join Date: Oct 2010
Location: La Feria Texas
Posts: 3,823
Default RV-12 saw horse collapse

Since most everyone has had to park their 12 on sawhorses for the gear SB, this should provide some caution. I almost did the same, using old plastic sawhorses, at the last minute I bought some 1000 lb capacity steel ones. This is a friends build, it crashed when he was not even around it so he was not injured. No big damage to the airframe was reported either.
[IMG][/IMG]
__________________
A&P, PP-SEL, Pathological Flier, EAA Technical Counselor
EAA Chapter 595 President,http://www.595.eaachapter.org/index.htm
Retired US Army Officer
RV12 built and flying
Reply With Quote
  #2  
Old 03-23-2013, 08:25 AM
RickWoodall's Avatar
RickWoodall RickWoodall is offline
 
Join Date: Jan 2007
Location: Ontario Canada
Posts: 1,472
Default YIKES!

Oh.... that is just ugly.

When building there were so many times I would check recheck, and over engineer all the supporting stuff.

Even now when changing tires etc, padded 2x8 special U box for the tail, motorcycle lift under belly with a wooden padded box and then supports under each wing.

If i did that to my plane during the build....there wouldnt be enough beers in the fridge to make it ok.

Hope all is ok.
__________________
Rick Woodall C-GSTT "ghost"
9a -TMX io-320, catto three blade, dual dynon hdx with a/p. 900+ hrs in 8 yrs flying.

Flew to Osh 11,12,15,17,19. SNF 2013. West to Cali /Washington/Vancouver/crossed the Rockies north to Red Deer east to Moosonee and over to maritimes. South to Jekyll Isl, cedar key, and Key West etc. 7 trips and 17 islands of the Bahamas. Flown turtles and dogs for Pilots n Paws too. Love our Rv's
Reply With Quote
  #3  
Old 03-23-2013, 10:02 AM
XOverZero's Avatar
XOverZero XOverZero is offline
 
Join Date: Aug 2010
Location: Irvine, CA
Posts: 427
Default Disturbing photo

I'm using the very same sawhorses in my project. Because of this mishap, I intend to conduct a good FMEA scrutiny of them. Thanks for posting, Don. Maybe it will save others from a similar fate.
__________________
John Halcrow
Tustin, CA
RV-12 120682
Emp/TC done; Wings done; Fuse kit done

"Keep flying. Malcolm Reynolds
Paid up until Aug 2022
Reply With Quote
  #4  
Old 03-23-2013, 10:18 AM
YellowJacket RV9 YellowJacket RV9 is offline
 
Join Date: Oct 2012
Location: Clearwater, FL KCLW
Posts: 1,330
Default

I am working on my wing spar and skeleton on those same sawhorses and just the other day I got paranoid and tied all the legs together to prevent this exact scenario. Won't build the fuse on these though, for sure.
__________________
Chris Johnson
RV-9A - Done(ish) 4/5/16! Flying 4/7/16
Reply With Quote
  #5  
Old 03-23-2013, 10:42 AM
DonFromTX's Avatar
DonFromTX DonFromTX is offline
 
Join Date: Oct 2010
Location: La Feria Texas
Posts: 3,823
Default

That was the intended purpose of the post. Had I not had a trip scheduled to Harbor Freight that day for something else, mine would have been on the identical sawhorses.

Quote:
Originally Posted by XOverZero View Post
I'm using the very same sawhorses in my project. Because of this mishap, I intend to conduct a good FMEA scrutiny of them. Thanks for posting, Don. Maybe it will save others from a similar fate.
__________________
A&P, PP-SEL, Pathological Flier, EAA Technical Counselor
EAA Chapter 595 President,http://www.595.eaachapter.org/index.htm
Retired US Army Officer
RV12 built and flying
Reply With Quote
  #6  
Old 03-23-2013, 11:24 AM
RFSchaller RFSchaller is offline
 
Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 3,165
Default

Ouch! I'm doing the SB now. I back up the sawhorse on the side I'm working on with a Kevlar sling to a shop crane. I'm only removing one gear leg at any given time so if it drops the remaining gear catches one side and the sling supports the other.
Reply With Quote
  #7  
Old 03-23-2013, 12:08 PM
David Paule David Paule is offline
 
Join Date: Dec 2009
Location: Boulder, CO
Posts: 5,077
Default Gotta Share This Story

....Even though it concerns a non-RV, it DOES involve a sawhorse.

I was changing the engine on my Cessna 180 at the Oxnard, CA airport. I decided to pull the landing gear off and have the legs magnafluxed. Home Depot at that time sold wooden sawhorses that they claimed were good for something like 2,500 pounds or so, and I bought one.

At the end of Sunday, the plane was resting on the sawhorse under the gearbox, with the landing gear and engine off, tailwheel on the ground. It wasn't too solid. We wedged the belly so that it wouldn't rock. The right wing overlapped a friend's Cessna 185. Another friend shook his head and said, "Man, if there's an earthquake, this place is history."

Well, that was the night of the Northridge earthquake. Even up the coast where I was staying then, it shook the cottage. Without thinking about downed bridges, I boogied on down to the hangar. It was completely intact. No damage at all. That wooden HD sawhorse did the job.

A few days later we flew the 185 out to look at the damage. It was like all over the place for maybe a hundred mile circle. Fresh cliffs in the hills, tarps over roofs in the Valley, bridges down. In fact, I later noticed some damage at my cottage 45 minutes up the coast in Carpenteria.

The sawhorse? Right now it's holding up the fuselage crate for my RV-3B. It's shown here when the kit was delivered.



That's one sawhorse that has a job for as long as it wants.

Dave
Reply With Quote
  #8  
Old 03-23-2013, 12:23 PM
Lemmingman's Avatar
Lemmingman Lemmingman is offline
 
Join Date: Jun 2010
Location: McKinney, TX
Posts: 689
Default

I have the same set of saw horses in use in the garage now. They are rated for 500 lbs at 30". That engine wouldn't be close to 500 lbs, would it?
__________________
Gil Brice
McKinney, TX EAA-1246
RV7 - Working on fuse, fuel, brakes etc...
Reply With Quote
  #9  
Old 03-23-2013, 12:29 PM
ArVeeNiner's Avatar
ArVeeNiner ArVeeNiner is offline
 
Join Date: Jun 2006
Location: San Jose, CA
Posts: 1,155
Default

I used the short Burro brand wooden saw horses for my project. They worked great with no chance of collapsing. Also, using one of them and a couple of scissor jacks under the fuselage (and tying down the tail) I can jack up the plane. They are rated for a ton.
__________________
Kelly Johnson
San Jose, CA
RV-9A

Pink slip issued: 5/7/12

First flight: 5/28/12, Memorial Day.

Phase I Complete: 8/18/12!
Reply With Quote
  #10  
Old 03-23-2013, 03:35 PM
rv9aviator rv9aviator is offline
 
Join Date: Jan 2005
Location: Arkansas
Posts: 1,505
Default Nylon straps caution too.

Crashes can happen several ways even when no one is around. Never hang airplane parts from cheap ratchet straps where sunlight can reach the straps. I had to build a new elevator because mine fell about 10 feet when the strap dry rotted from the sun and came apart. It was a new strap when I hung the empennage and had never been wet. They came from Harbor Freight, BTW.
__________________
Jim Wright
RV-9A N9JW 90919 SoldArkansas
http://www.jimsairplanes.com
_______________________
"It's a brutal struggle for the biscuit."
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 12:08 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.