While I think it is worthwhile for you to consider all options, the best way to power a papercrete mixer will usually be with the power source that you already have available to you.
Your post did get me thinking about mixer gas milage, and that lead to me posting the competition thread. That didn't do much to answer your questions.
Without actually measuring how much gas, or electricity gets used to mix papercrete, I suspect that the mixer energy cost, no matter what type of mixer you use, will be minimal compared to other costs.
I encourage you to consider what type of mixer will allow you to mix the maximum amount of papercrete as quickly as practical, with a minimum of physical labor. The larger the structure you wish to build, the more papercrete you will need to mix, and the more time and work you will need to put in.
Sometimes it simply makes sense to have a big overpowered machine do as much work as possible to save time, money, and labor in other areas of construction. Even if that big overpowered machine may burn a little extra gas.
Of course, whatever "simply makes sense" in your personal situation will be determined by you. (Appropriately so.)
If an electric mixer makes sense to you for the way you plan to work and build your structure, go for it. If you want to power your mixer via 10000 hampsters generating power on 10000 hampster wheels, go for it.... JUST MAKE SURE TO POST PHOTOS AND VIDEOS!!!
--- In papercreters@yahoogroups.com, "danclarke95076" wrote:
>
> Hi,
>
> I'm collecting parts for a tow mixed but mindful of the energy ( cost of gas ) to tow it around, so I'm always looking at other kinds of mixer that might be used with an electric motor or vertical shaft gas engine from a lawn mower or such.
>
> Here's a link to an ad that showed up on Craigslist labeling it a media shredder. I don't know how this design would work with paper or cardbourd but thought, if I am allowed, I'd publish it here in case it might be of interest.
>
> http://tucson.craigslist.org/tls/3520388633.html
>
> On another note, my brother works for a plant that makes paper plates and he says their pulper is about 16' across and 4' deep and iutilizes a 1'-2' diameter helix shaped impeller in the center. It is powered by a 50 hp. electric motor.
>
> I'm trying to get some pictures of it to post here.
>
> Thirdly, why?. Given that I recall posting here before and never in a non-constructive way, does this post have to be approved by the group owner??
>
> Dan
>
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Sunday, January 6, 2013
[papercreters] Re: Studying different kinds of mixers
at 6:32 AM