[chbot] Robin's window problem + cheap hydraulics

[Robin Gilks]

So $3 for the cylinder, $500 for the pump ;)

Think I'll investigate torsion bars a bit more (like you find opening
a boot lid)

On Tue, Sep 20, 2022 at 1:50 PM Andy Gardner <ceo at andygardner.com> wrote:
>
>
> Killing 2 birds with one stone here.
>
> Repco have got lots of clutch slave cylinders in their clearance items
> for $6 or less...
>
> https://www.repco.co.nz/en/search?q=clutch+slave%3Amatching%3Alevel3Category%3A2538381394%3ApartSlot%3ACLUTCH%2BSLAVE%2BCYLINDER&page=1
>
> Robin might be able to use them in a design (with appropriate leverage)
> that doesn't nut him when closed.
>
> The rest of you - I could think of a few applications for them such as
> bed leveling.
>
> You can put 2 of them to use in a closed hydraulic circuit that keeps
> something level as it is moved around - that's how the bucket in a
> bucket truck stays level as the boom is moved up and down.
>
> If you look at a bucket truck there's a BIG hydraulic cylinder that
> lifts the boom, but there's a smaller cylinder sitting there near it -
> that's the bottom leveler. The top leveler is hidden inside the top of
> the boom.
>
>
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