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  #1  
Old 06-24-2022, 02:53 PM
wirejock's Avatar
wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 5,720
Default Elastomeric gear

Ok. I switched gears. Waiting on back order parts.
I'm working on the gear and wheel pants and bottom cowl gear slot.
How much does the elastomeric gear move from full weightbto off the ground?
I need a lift capable of raising the fuse high enough to get off the ground.
Planning to buy one of these.
https://www.harborfreight.com/1000-l...art-60438.html
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Larry Larson
Estes Park, CO
E-mail: wirejock at yahoo dot com
Builder Blog: http://wirejockrv7a.blogspot.com
Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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  #2  
Old 06-25-2022, 07:45 AM
lr172 lr172 is offline
 
Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 7,727
Default

when I do wheel maintenance I put a 2x4 under the fuse skin directly under the spar, then one of those long HF jacks under that. Two jacks should lift the whole fuse, but you'll need to support the back as well. I would NOT jack on the fuse at the firewall, though I have lifted the plan via the engine mount, but saw horse at the rear holds some weight.

Larry
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  #3  
Old 06-25-2022, 09:56 AM
wirejock's Avatar
wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 5,720
Default Lift

I'm going to work the wheel pants & gear leg fairings. She has no wings. How else can I lift the fuse and make it level long and lat? I plan to make a cradle with a couple 2" boards to fit the center section and use the HF table to lift the fuse. I may use the cherry picker as a safety.
I searched VAF and there are quite a few who lift the entire airplane using a similar set up. Motorcycle jack, Home brew table, HF table.
https://vansairforce.net/community/s...58&postcount=4
https://vansairforce.net/community/s...22&postcount=5
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Larry Larson
Estes Park, CO
E-mail: wirejock at yahoo dot com
Builder Blog: http://wirejockrv7a.blogspot.com
Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.

Last edited by wirejock : 06-25-2022 at 10:11 AM.
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  #4  
Old 06-25-2022, 02:30 PM
wirejock's Avatar
wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 5,720
Default Lift

I didn't care for the HF hydraulic table. No lock out to prevent it from leak down. I bought the 1500lb aluminum motorcycle lift. It has a lockout to prevent dropping.
Also went to Home Depot and bought a 4x6x8 treated douglas fir and a 2x6x8. The huge block will be cut into 2 foot lengths. It can be stacked either on the 4" or 6" to build a platform for the lift. The 2x6 will be cut to fit the center section. If not perfectly flat, I will carve it to fit. Should be pretty stable. More to come
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Larry Larson
Estes Park, CO
E-mail: wirejock at yahoo dot com
Builder Blog: http://wirejockrv7a.blogspot.com
Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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  #5  
Old 06-25-2022, 10:39 PM
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RicoB RicoB is offline
 
Join Date: Mar 2017
Location: Glendale, CA
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Quote:
Originally Posted by wirejock View Post
I didn't care for the HF hydraulic table. No lock out to prevent it from leak down. I bought the 1500lb aluminum motorcycle lift. It has a lockout to prevent dropping.
Also went to Home Depot and bought a 4x6x8 treated douglas fir and a 2x6x8. The huge block will be cut into 2 foot lengths. It can be stacked either on the 4" or 6" to build a platform for the lift. The 2x6 will be cut to fit the center section. If not perfectly flat, I will carve it to fit. Should be pretty stable. More to come


Got pics of what you did?
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  #6  
Old 06-26-2022, 09:31 AM
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wirejock wirejock is offline
 
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Location: Estes Park, CO
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Default Lift

Quote:
Originally Posted by RicoB View Post
Got pics of what you did?
I will post when it's finished. I'm still playing with the blocks to find the most stable combination.
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Larry Larson
Estes Park, CO
E-mail: wirejock at yahoo dot com
Builder Blog: http://wirejockrv7a.blogspot.com
Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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  #7  
Old 06-26-2022, 05:41 PM
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wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 5,720
Default Lift

Almost done but first a couple observations.
Turns out, it only takes about 2"-3" of lift to get the tires off the ground. Stability seems to be the biggest problem. Keeping whatever lift mechanism from shifting sideways is the problem. Just like lifting a car. It will want to shift toward gravity. I've learned that lesson with cars. One scissor jack folded right over. Another time two jack stands tilted right over. Gravity is vicious.
1. Lift once or routine use. If you just need to lift the fuse once to fit the pants and fairings, the cherry picker works fine. Build a couple supports and a 2x6 or 4x4 accross the fuse at the center section spar. If no cherry picker, figure out a way to lift then place jack stands at either end of the support. Be careful because there's nothing tieing the two supports to keep the fuse from shifting sideways. Shimming to level is also required so plan accordingly.
2. Multi use lift. The motorcycle lift seems pretty stable considering there's no wings to lift from at the tie downs. I still like lifting at the center section but it would be nice to have a couple supports at the wing tie downs for security.
I will post a photo of the lift tomorrow.
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Larry Larson
Estes Park, CO
E-mail: wirejock at yahoo dot com
Builder Blog: http://wirejockrv7a.blogspot.com
Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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  #8  
Old 06-28-2022, 08:01 AM
Tcheairs Tcheairs is offline
 
Join Date: Feb 2021
Location: Covington
Posts: 180
Default

Have you given any thought to the screw style jacks used to support yachts when on the dry dock...should be relatively inexpensive. .very simple process..I use them when my 30,000lb Bluewater Coastal is on the dry dock and trust them completely..Here's a link..Brownell Boat Stands..

https://www.westmarine.com/buy/brown...BoCTNQQAvD_BwE

https://www.google.com/maps/uv?pb=!1...TEQoip6BAhiEAM

Last edited by Tcheairs : 06-28-2022 at 08:15 AM.
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  #9  
Old 06-28-2022, 10:06 AM
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wirejock wirejock is offline
 
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Location: Estes Park, CO
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Default Jacks

Quote:
Originally Posted by Tcheairs View Post
Have you given any thought to the screw style jacks used to support yachts when on the dry dock...should be relatively inexpensive. .very simple process..I use them when my 30,000lb Bluewater Coastal is on the dry dock and trust them completely..Here's a link..Brownell Boat Stands..
<snip>
Yes. I was going that route and I may still. Screw or HF bottle type jacks would work well. The concern is the lateral stability. There isn't any structure locking the two jacks together so the plane can't move laterally. Like I said, I may try them as an alternate method. I can always use them as wing jacks.
It's scarry how something heavy can lean with gravity. I've seen it twice. Once our SUV sissor jack collapsed. I was changing a tire and got up to get something and it came down. Jack looked like a steel pretzel. Another time it was my fault. I had a vehicle on jack stands but the area wasn't level. It slowly went back and landed on the tires. All four jack stands just tilted over. I hadn't removed them yet. I'm a little overly cautious now. Belt and suspenders.
__________________
Larry Larson
Estes Park, CO
E-mail: wirejock at yahoo dot com
Builder Blog: http://wirejockrv7a.blogspot.com
Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
Reply With Quote
  #10  
Old 06-28-2022, 12:21 PM
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fl-mike fl-mike is offline
 
Join Date: Jul 2005
Posts: 1,805
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For nosewheel maintenance, I just bolted a plate to the hangar floor under the tail and used a block and tackle to pull the tail down. Gets the nose quite high when you can pull the tail down to a few inches from the floor.

In fact, I used an old door hinge so it flops flat when not using it so I don't trip over it. That and a couple Tapcons and you're good to go.
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N164WM RV-6A Slider/O-360/FP Sold 4/2022
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