Students’ Leaf Blower Suppressor To Hit Retail
Students’ Leaf Blower Suppressor To Hit Retail
hackaday.com
Students’ Leaf Blower Suppressor To Hit Retail
69 comments
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If it were me that designed this, I would license out the design for manufacturers to use in their production models instead of making some kind of attachment that is unlikely to work on all models. That seems much more likely to achieve the goal of reducing noise from leaf blowers long term. Get like 3 manufacturers on board that could even charge a premium, and you have reduced the noise potentially forever while still making a tidy profit.
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It was a collaboration with the company. They probably helped fund it for exclusive licensing to start.
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Electric is so much quieter. They have them in Singapore
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The gardener in my last apartment replaced all of his powertools (mower, blower, trimmer, …) with electric ones powered by an accu-pack he carries on his back. This is an absolute game-changer! I could actually sit outside again and even do stuff for work, when he was there.
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This thing influence how air moves through it, so it would make electrics more silent too
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Pretty sure when I saw the original post talking about the design, they said the students were only working with electric leaf blowers. So this was designed to make electric leaf blowers even quieter.
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This was designed for electric leaf blowers, not gas leaf blowers.
Electric leaf blowers are much much better, but they’re still loud, and that’s what these students were attempting to address.
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The video in the article shows them testing with an electric leaf blower.
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I still say replace them with rakes.
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I get what you're saying, but leaf blowers are also commonly used for cleaning up extra grass clippings from the roads, etc.
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And sand/dirt after a windstorm, at least in my area. They're really quite useful.
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For the stupid maybe.
Turns out they number around 70 million in the US....
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They do the same thing with vehicle air intakes to eliminate annoying sounds and make the car sound more throaty. Don't forget about cars that have engine noises come through the stereo. People think they need to "feel the engine" in order to drive. I would rather it be completely silent, not that's not possible because of tire noise.
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seems like snake oil. whe using my electric leaf blower all the noise sounds to be coming from the big fan at the top of the device and not the nozzle
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Now pretend your electric blower is actually a super loud and inefficient two stroke motor.
The movement of air isn't noisy, the motor is.
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Yeah, I thought this was for those pieces of shit.
I'm sure electric ones are being used around my city, but that's not the ones I notice.
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There’s no way this won’t affect the final CFM or Velocity of the air.
This would be no different than running it at a little less than 100% power, but wastes that energy instead.
Why else would they not provide any technical detail, even a wind velocity test would be huge FFS.
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I don't know, it sounds like it slightly redirects only the air at the margins that contacts the blower tube, which reduces turbulence. The noise reduction is due to the decreased turbulence, not a reduction in airflow. If I had to guess, the actual reduction in airflow is probably negligible, and they don't describe it in more detail because they're trying to commercialize it
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So it's taking some of the air out of the stream, slowing it down, and putting it back in the stream... How does this not affect the performance?
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Because that isn't how it works. I've been working on this idea in my spare time for a patent, for months. I have the CFD models to prove it. I learned ELMER and perfected the solvers and meshing process.
It grinds my gears that they stumbled upon it, get all the credit, and apparently don't know how it actually works.
Never been scooped before. But man it doesn't feel good.
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Did you put your information somewhere they could find it before you got the patent? If you have authorship doesn't that mean you have grounds to sue?
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I'm sure it has a marginal effect, the drag would have to reduce average velocity somewhat, but maybe it is negligible. Or maybe the overall drag is equal to an unmodified tip due to other changes such as reduced restriction.
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Why isn't there video of this yet? I didn't care at all what an article says. Show me the video
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Somebody tell Kate Blanchett
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I'll wait until I can 3d print my own. I'm not paying for a hunk of plastic.
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Based on how it works, (not how they say it works) you need a different geometry depending on the frequency. So it's only going to work at select rpm.
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I want the stl!
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Why not just use a rake and a broom?
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Good. I fucking hate leaf blowers.
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Let me help you with the correct wording: 'Power to noise'-converters. You're welcome.
69 comments
MAKE GAS LANDSCAPING TOOLS ILLEGAL
Give away free electric tools if they trade in their gas ones. It's so bad for health to be huffing 2 stroke fumes all day every day.
Edit, I realize that this is meant for a electric leaf blower since it would do fuck all for a gas one. Doesn't change my opinion about landscaping tools tho
First two sentences of the article.
I don't know mate, I wouldn't replace my electric tools–drills, grinders, saw... with gas ones. But these outdoors tools are a different kind of beast. I've only used an electric chainsaw and it was an absolute crap, maybe there are better ones but it was crappier than the smallest and shittiest gas chainsaws I've used, and a cord around you in that setting isn't great either.
Look again! I have a dewalt chainsaw, and I love it. I burn about 13 cords of wood each winter as it is our primary heating source. It runs and runs and runs.
I think the key is to keep the chain sharp. I use the timberline sharpener, and it gets the chain razor sharp, which means less stress on the motor and longer battery life.
They already are in many communities. Enforcement is an issue.