I'm not following this thread carefully (not into mechanics) but I thought lawnmower engines were tremendous polluters. Otherwise it sounds like a good idea.
Follow progress on the new project at http://www.papercretebyjudith.com/blog
More papercrete info at http://squidoo.com/papercretebyjudith
To: papercreters@yahoogroups.com
From: indiakarl@yahoo.com
Date: Mon, 26 Mar 2012 07:17:59 +0000
Subject: [papercreters] Re: MIXERS; - lawn mower engine?
__._,_.___ 
__,_._,___
Follow progress on the new project at http://www.papercretebyjudith.com/blog
More papercrete info at http://squidoo.com/papercretebyjudith
To: papercreters@yahoogroups.com
From: indiakarl@yahoo.com
Date: Mon, 26 Mar 2012 07:17:59 +0000
Subject: [papercreters] Re: MIXERS; - lawn mower engine?
i agree - a clutch would be necessary to get the thing going, and restart the engine if it stops. ideally, a transmission would be useful, lower gear for higher torque for mashing up fresh fodder. but clutch and gearbox adds complexity, and requires mechanics to put together. that's why i suggested different size blades, a small blade for thrashing up the paper/cardboard, moving to a larger blade for mixing slurry. a slipping-belt clutch is fairly easy to construct, and would allow you to "gear down" the output of the mower engine. or if you can spend the money a belt driven torque converter would do the trick: http://www.ebay.com/itm/1-40-SERIES-GO-KART-TORQUE-CONVERTER- the advantage to a lawn-mower engine is the vertical shaft. a horizontal shaft engine would require a means of re-directing the output to drive a vertical mixing shaft. my first thought was a motorcycle engine - has clutch, has transmission, but horizontal shaft output. that's another kind of engine in abundance in the rest of the world, cause they use 90-125cc motorbikes for transportation everywhere. and they do end up in wrecks...
i haven't built any of these ideas myself mind you, i'm working out the concepts. the group has some wonderful experiential feedback. for those folks who don't have a vehicle that can tow a mixer, or who want to mix PC close to where it will be used without having to haul it from the road uphill to the building site, a small motor powered mixer makes sense.
--- In papercreters@yahoogroups.com, indiakarl <indiakarl@...> wrote:
>
> perhaps it's already been done, but i was thinking that a vertical shaft lawn-mower engine might make a suitable power source for a non-towed mixer. ..... you might even go with a shaft that has a keyway that fits the drive end of the motor, so you could take off the mixer shaft. you could have a small "pulping" blade that would thrash the paper/carboard material to pulp, then a larger blade that would be good for mixing in the concrete.
i haven't built any of these ideas myself mind you, i'm working out the concepts. the group has some wonderful experiential feedback. for those folks who don't have a vehicle that can tow a mixer, or who want to mix PC close to where it will be used without having to haul it from the road uphill to the building site, a small motor powered mixer makes sense.
--- In papercreters@yahoogroups.com, indiakarl <indiakarl@...> wrote:
>
> perhaps it's already been done, but i was thinking that a vertical shaft lawn-mower engine might make a suitable power source for a non-towed mixer. ..... you might even go with a shaft that has a keyway that fits the drive end of the motor, so you could take off the mixer shaft. you could have a small "pulping" blade that would thrash the paper/carboard material to pulp, then a larger blade that would be good for mixing in the concrete.
__._,_.___
Your email settings: Individual Email|Traditional
Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe
Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe
__,_._,___
