Linear Actuator with Safety Release

[JLR]

I will be adding a linear actuator to lift the hatch for my genset room. It is easy to find a 12V linear actuator with an 18" stroke. However, I would also like to find one (or a suitable bracket) that will still permit me to open the hatch if, for some reason, the 12V source to power the actuator fails. Any suggestions?

 

[SeaEric]

This is an excellent question. I would speculate that it would be best accomplished in the bracket. Tiara has used linear actuators for lifting all sorts of stuff for years. Perhaps a Tiara guy knows how they handle this.

 

[Pascal]

What flooring is on the hatch?if carpet, put in a small access plate in the hatch so you can reach in and remove the pin that secures the rod to the bracket.

 

[JLR]

I found the bracket listed in the attached link. I believe it is made just for the purposes I was interested in. What do you think?

http://www.foreandaftmarine.com/622-70381001.htm

 

[SeaEric]

It looks like that would allow you to lift the hatch manually - far enough to pop the pin. Should work for the intended purpose.

 

[SeaEric]

I spoke to my friend who owns a Tiara with a hatch lift. His ER has other access to get in there and pop the pin. Otherwise, his observation was that the battery that powers a single hatch access needs to be in a different compartment so it can be alternatively energized if power fails.

 

[Genesis]

I spoke to my friend who owns a Tiara with a hatch lift. His ER has other access to get in there and pop the pin. Otherwise, his observation was that the battery that powers a single hatch access needs to be in a different compartment so it can be alternatively energized if power fails.

Right, because jackscrew motors and similar things never fail or jam.