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 Powered hydraulics for a trap door 
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Anyone have suggestions where I can purchase either hydraulic assisted pistons or powered hydraulics for a trap door that will be approx 6 ft long by 3 ft wide?

Here is sort of what I am talking about.


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Thu Jan 03, 2019 6:55 am
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Contact gate and door opener companies.

Subscribed. Needs a rug.

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Thu Jan 03, 2019 7:02 am
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Automotive lift gate struts would work as well. Just need to match up the weight up the floor panel with that of a popular SUV lift gate. Bonus points, use the new power assisted lift gate in the newer style Tahoe's and have it open and close at the push of a button.


Thu Jan 03, 2019 7:08 am
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Powered liftgate struts are available and run on 12v, assuming backup power is an important consideration. Hydraulic isn't needed unless the door is really heavy. A hydraulic system would also require more maintenance, if that's a concern.


Thu Jan 03, 2019 7:40 am
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If you want it powered, forget about hydraulics and go full electric with ability to bypass, disengage drive.
Look for something like a linear screw drive motor, electric door opener or electrical magnetic push/pull. Hell, you could probably find an electric door opener used, think disabled person entry doors to businesses.
With those, you can use a key pad to open/lock/unlock too, real simple shit.


Thu Jan 03, 2019 7:44 am
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STED9R wrote:
If you want it powered, forget about hydraulics and go full electric with ability to bypass, disengage drive.
Look for something like a linear screw drive motor, electric door opener or electrical magnetic push/pull. Hell, you could probably find an electric door opener used, think disabled person entry doors to businesses.
With those, you can use a key pad to open/lock/unlock too, real simple shit.

Reading posts like this makes me wish Boeing Surplus was still open. :wink05:

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Thu Jan 03, 2019 7:59 am
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Last edited by CQBgopher on Sat Jan 19, 2019 12:14 pm, edited 1 time in total.



Thu Jan 03, 2019 8:06 am
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Buddy of mine in N Seattle put in a pneumatic cylinder for his horizontal cellar door.
Picked up a small compressor at a thrift store for $20
We compared hydraulic vs pneumatic and determined pneumatic was the way to go.
He used that thing until he moved out 8 years later.
Don't think it required any repairs or maintenance.
And it opened his cellar door in less than a second. Hahjaha
Controlled with a cylindrical key lock that operated a solenoid.
3 positions: Off, Open, and motion sensor.
Now that scared the mailman. Hahaha

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Last edited by Guntrader on Thu Jan 03, 2019 8:47 am, edited 1 time in total.



Thu Jan 03, 2019 8:37 am
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AR15L wrote:
STED9R wrote:
If you want it powered, forget about hydraulics and go full electric with ability to bypass, disengage drive.
Look for something like a linear screw drive motor, electric door opener or electrical magnetic push/pull. Hell, you could probably find an electric door opener used, think disabled person entry doors to businesses.
With those, you can use a key pad to open/lock/unlock too, real simple shit.

Reading posts like this makes me wish Boeing Surplus was still open. :wink05:

Loved that place!

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Thu Jan 03, 2019 8:46 am
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Boeing Surplus. Hahaha'
When I worked at this computer maintenance company in Kirkland, we used to take new employees down to Boeing Surplus to grab a desk and chair.
Desks were $10-20, chairs were usually a little more.
They bitched if you cherry picked and swapped out the drawers.

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Thu Jan 03, 2019 8:51 am
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Selador wrote:
AR15L wrote:
STED9R wrote:
If you want it powered, forget about hydraulics and go full electric with ability to bypass, disengage drive.
Look for something like a linear screw drive motor, electric door opener or electrical magnetic push/pull. Hell, you could probably find an electric door opener used, think disabled person entry doors to businesses.
With those, you can use a key pad to open/lock/unlock too, real simple shit.

Reading posts like this makes me wish Boeing Surplus was still open. :wink05:

Loved that place!


I wonder what Boeing does with all the surplus crap now?

I still have Cleco clamps, several Columbian vises, tables, drill bits and other random stuff from there.

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Thu Jan 03, 2019 8:54 am
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Here yah go https://www.surpluscenter.com/


Thu Jan 03, 2019 9:15 am
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https://www.bilco.com/category1326/For_ ... d_Flooring


Are you planning on using that space for earthquake/disasters?

The reason I ask is to plan debris landing on top and so you will need something that will be able to open with several tons of weight and/or plan for opening without power.


Thu Jan 03, 2019 9:22 am
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Last edited by CQBgopher on Sat Jan 19, 2019 12:14 pm, edited 1 time in total.



Thu Jan 03, 2019 9:27 am
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Last edited by CQBgopher on Sat Jan 19, 2019 12:13 pm, edited 1 time in total.



Thu Jan 03, 2019 9:30 am
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