[PSUBS-MAILIST] PSUBS manipulator

[Alan via Personal_Submersibles]

Alec & Hank,
when I was compensating linear actuators ( a long time ago ) mine had
micro switches in them that stopped the travel.
I am not sure whether the Lenco has them or not!
I was sticking a hot needle through the plastic housing of the micro switch to
help compensate them, as it was pretty well sealed & I feared it would randomly
be switched because of the oil compensation pressure at depth.
Also the brushed motors were sealed. This again may be a problem if the 
compensating oil hasn't fully filled the cavities inside the motor housing &
suddenly experiences pressure as you descend. The small brushed motors
can have what Phil describes as a "herky jerky" action when oil compensated
due to the oil lifting the brushes off as they spin fast.
Mentioning this in case you encounter problems operating them at depth!
Alan

> On 4/09/2020, at 9:59 AM, Alec Smyth via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Hi friends,
> 
> The PSUBS Community Projects page (http://www.psubs.org/community/projects/ ) now features an "open source manipulator" developed by Hank Pronk and me. This is an intentionally simple manipulator built using only a drill press and an angle grinder, except for a few plastic bushings that were turned on a lathe for expedience. We purposely avoided things like aluminum welding, to keep it's fabrication as accessible as possible. The page contains blueprints, photos, and a bill of materials - but I recommend beginning at the "Start Here" document in the ZIP file. Please don't hesitate to reach out if you have any questions, or if you have any suggested improvements.
> 
> Best,
> Alec
> _______________________________________________
> Personal_Submersibles mailing list
> Personal_Submersibles at psubs.org
> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20200923/5bca07b7/attachment.html>