Grass Trimmer machine ( Portable)

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The discussion revolves around the feasibility of creating a grass trimmer that simultaneously cuts and vacuums grass. While some participants recall seeing a similar concept, they question its practicality compared to traditional bagging methods. The conversation highlights that mower blades function more like impellers, directing cuttings into a chute for collection. There’s also mention of the need for a smaller, more efficient version for residential use, particularly in tight spaces. Overall, the consensus leans towards the complexity and cost of such a dual-function device outweighing its benefits.
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Hi everyone, is it possible to build a grass cutter that can cut grass and vacuum it at the same time?
 
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Maybe it was a homebuilt unit on Daily Planet.. my memory fails me, but I know for sure that I saw it somewhere.
On the other hand, I can't figure out why anyone would want to do that, when simply bagging the cuttings is so much easier and cheaper and more convenient.
 
Doesn't the blades of the mower act as a fan already, so it in a way already is a vacum?
 
D.Hayward said:
Doesn't the blades of the mower act as a fan

I'd say that they're more of an impeller. They throw the cuttings against the inner surface of the mowing deck. Where that surface is removed to form a chute, the debris goes out and gets bagged (or just strewn about the yard).
 
On an industrial scale, it's better to cut the grass and let it dry a bit before you hoover it up...

Chopping_Grass_for_Silage_-_geograph.org.uk_-_1343401.jpg


But you may need a nano-scale version of this to use in your back yard :smile:
 
AlephZero said:
But you may need a nano-scale version of this to use in your back yard :smile:
Depends upon location. If he lives in Canada, that could be his back yard. (My signature refers to the time when I parked a Cessna 150 in my friend's yard.) :biggrin:
 
Okay, that's a different scene. I thought that you meant a lawnmower, which is what we use in North America for most cutting. What you picture is a weed whacker. That's for tight areas or stuff that is too tough for a mower. Given its limited scope of use, it would be a lot easier and cheaper to just take after it with a rake. Think of all the crap involved in power take-offs and sucking and ducting and carrying bags around...
 

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