Nearly done with my diving helmet.

File: 52 KB, 640x480, helmetprogress.jpg [View same] [iqdb] [saucenao] [google]

Nearly done with my diving helmet. Mad Scientist !!Q11PG81nz2n Sat Jul 30 01:27:19 2011 No.3474792 [Reply] [Original]

As you can see I've got all the viewports installed, and that's 100 feet of air hose underneath it. Just gotta remove those panels, spraypaint the opaque part of it (metallic blue) and install the weights and air spigot.

Then it's complete, and ready for underwater adventures.

>>	Anonymous Sat Jul 30 01:29:19 2011 No.3474801 >>3474792 Where do you live? I just want to know so I can keep a look out for your obituary.

>>	Anonymous Sat Jul 30 01:30:19 2011 No.3474807 What for? Becomming a big daddy?

Mad Scientist !!Q11PG81nz2n Sat Jul 30 01:31:19 2011 No.3474813

>>3474801

At the bottom of the sea, soon enough.

Why so pessimistic? Why is this such a common reaction? Being underwater seems to spook people on a very primordial level to the point that they can't shake the feeling that it's inherently deadly.

This can be done simply and safely, I'll prove it.

>>	Mad Scientist !!Q11PG81nz2n Sat Jul 30 01:32:19 2011 No.3474817 >>3474807 >What for? Underwater exploration.

>>	Anonymous Sat Jul 30 01:34:19 2011 No.3474825 What's that made of, PVC?

>>	Anonymous Sat Jul 30 01:34:19 2011 No.3474829 >>3474813 >At the bottom of the sea, soon enough. Ahh, where all the dead bodies go to lie.

Anonymous Sat Jul 30 01:35:19 2011 No.3474831

OP, you'd better securely weigh yourself down with a lot of rocks so the buoyancy of the helmet doesn't prevent you from getting underwater.

Also, might as well jump in somewhere deep to start off. Being timid would just prove that you're not confident in your workmanship - it would be like everyone is laughing at you.

>>	Anonymous Sat Jul 30 01:35:19 2011 No.3474832 If you plan on underwater exploration I would highly suggest using proffesional equipment. Are you a marine biologist of some sorts?

>>	Anonymous Sat Jul 30 01:35:19 2011 No.3474835 >>3474829 Davie Jones' Locker?

>>	Anonymous Sat Jul 30 01:37:19 2011 No.3474839 This is terrible. Did you even consider the safety of a child going under water? THEY DON'T HAVE GILLS GENIUS. I guess some people get a sick thrill from torturing children.

>>	Anonymous Sat Jul 30 01:37:19 2011 No.3474841 it looks like shit, man. I would just cast it out of brass/bronze

Anonymous Sat Jul 30 01:38:19 2011 No.3474846

guys dont be fags, op has an interesting idea, that would actually be pretty fun to do

btw OP make sure you can breath through the hose, as you realize is you breath out the co2 will be stuck in the hose, also it will take a significant about of effort for every breath, it would be a better idea to use a oxygen tank or a air bell

>>	Anonymous Sat Jul 30 01:38:19 2011 No.3474850 People aren't so much afraid that you'll drown as that you could pass out for whatever reason...and thus never wake up again. If someone else will be there monitoring then no problem.

>>	Anonymous Sat Jul 30 01:39:19 2011 No.3474859 MadScientist, be sure to take a can of beans with you as you submerge.

Anonymous Sat Jul 30 01:40:19 2011 No.3474862

>This can be done simply and safely, I'll prove it.

Mad Scientist is really living up to his name, I see.

Is that square shape strong enough to hold up under pressure? If not, it'll have to be pressurized to stay inflated, which kinda defeats the purpose of having one of these in the first place.

>>	Anonymous Sat Jul 30 01:41:19 2011 No.3474869 File: 41 KB, 500x369, madgineer.jpg [View same] [iqdb] [saucenao] [google] >>3474862

>>	Anonymous Sat Jul 30 01:41:19 2011 No.3474871 >>3474850 buddy system, ALWAYS

>>	Anonymous Sat Jul 30 01:42:19 2011 No.3474879 What kind of depths are you shooting for, MS?

Mad Scientist !!Q11PG81nz2n Sat Jul 30 01:47:19 2011 No.3474905

>>3474832

>If you plan on underwater exploration I would highly suggest using proffesional equipment.

No. I can already scuba dive. I don't want to scuba dive. I want to helmet dive. It's different, and enjoyable in a way Scuba isn't. The cheapest diving helmet is $4,000. This is outrages for what is essentially just a weighted plastic container. I've explained all of this in past threads.

>Are you a marine biologist of some sorts?

Nope.

>btw OP make sure you can breath through the hose, as you realize is you breath out the co2 will be stuck in the hose, also it will take a significant about of effort for every breath, it would be a better idea to use a oxygen tank or a air bell

That isn't how it works. Diving helmets push air through at a rate sufficient to completely replace the interior atmosphere faster than you can foul it with CO2. It's a very old, proven design.

>>3474862

>Is that square shape strong enough to hold up under pressure?

There isn't any pressure. Common misconception. There is only a pressure differential in rigid atmospheric diving exoskeletons. Diving helmets are what is called "ambient pressure". The air fed into it is compressed, and winds up exactly the same pressure as the outside water, plus a little more (so that air is continuously forced out the bottom via a spigot in back). As a result there is no pressure differential between the inside and outside. It needs only be strong enough to withstand buoyancy stress.

Mad Scientist !!Q11PG81nz2n Sat Jul 30 01:51:19 2011 No.3474928

>>3474879

>What kind of depths are you shooting for, MS?

about 27 feet. I'm 6' and the helmet rim must be no deeper than 21 feet. The air I breathe will be at 1.6atm, the limit before which saturation doesn't occur.

I could use it much deeper but I would need to decompress on the way up, and there aren't any lakes much deeper than that around here anyway.

>>	Anonymous Sat Jul 30 01:55:19 2011 No.3474952 >>3474928 You can go deeper. Just do it really quickly and hold your breath on the way up. Trust me.

>>	Anonymous Sat Jul 30 01:56:19 2011 No.3474963 This thread makes me want to build one of these for myself.

>>	Anonymous Sat Jul 30 02:01:19 2011 No.3474989 Wait, does it have a rubber container to wrap around your neck? How does this thing not slide off your head

>>	Anonymous Sat Jul 30 02:03:19 2011 No.3474992 Vis in lakes is usually beyond shit

>>	Anonymous Sat Jul 30 02:03:19 2011 No.3474994 File: 97 KB, 761x600, 1311041169108.png [View same] [iqdb] [saucenao] [google] You're making the problem much more difficult than it needs to be, MadScientist. See picture.

>>	Mad Scientist !!Q11PG81nz2n Sat Jul 30 02:04:19 2011 No.3474997 >>3474989 >>Wait, does it have a rubber container to wrap around your neck? Yeah, I'll be adding something like that when it's painted to keep it steady while it's on. It isn't complete in the photo.

>>	Anonymous Sat Jul 30 02:04:19 2011 No.3475000 >>3474792 I'm not too knowledgeable about this but wouldn't the pressure differential make it impossible to breathe? You would need to set up an air compressor on the surface to pump air down to you.

Mad Scientist !!Q11PG81nz2n Sat Jul 30 02:06:19 2011 No.3475010

>>3475000

>I'm not too knowledgeable about this but wouldn't the pressure differential make it impossible to breathe? You would need to set up an air compressor on the surface to pump air down to you.

Yeah, I know. I already have the compressor.

>>	Anonymous Sat Jul 30 02:08:19 2011 No.3475014 >>3475010 Oh well then that kinda pointless you would have to haul around an air compressor everywhere you go might as well go with scuba a lot more portable and convenient.

>>	Anonymous Sat Jul 30 02:09:19 2011 No.3475015 Looking good MS. have you considered a simple harness that straps under the pits instead of weights? seems like having your weights too high could be a problem.

Mad Scientist !!Q11PG81nz2n Sat Jul 30 02:14:19 2011 No.3475025

>>3475014

>Oh well then that kinda pointless you would have to haul around an air compressor everywhere you go might as well go with scuba a lot more portable and convenient.

....I don't think you understand how this works. I don't carry the compressor. It's on shore, or overhead in an inflatable raft with the battery pack. The very long air hose permits me freedom to range quite some ways from the compressor. I can always add more hose.

Mad Scientist !!Q11PG81nz2n Sat Jul 30 02:21:19 2011 No.3475043

>>3475015

>have you considered a simple harness that straps under the pits instead of weights? seems like having your weights too high could be a problem.

There would still be the problem of buoyancy. And it would dig into my armpits. Better to add just enough weight to cancel out the helmet's buoyancy so it feels like it weighs nothing.

>>	Anonymous Sat Jul 30 02:22:19 2011 No.3475052 >>3475043 makes sense. onward and downward!

>>	Anonymous Sat Jul 30 02:23:19 2011 No.3475053 >>3475025 Oh okay I though you would have it on shore. Yes I can see how it would work much better on a raft. How deep can go with this setup?

>>	Anonymous Sat Jul 30 02:24:19 2011 No.3475057 OP, I wish you luck. You are a rad dude.

>>	Anonymous Sat Jul 30 02:27:19 2011 No.3475076 >>3475053 Can or should? You can go as deep as you have hose for. You shouldn't really go deeper than 21 feet, however.

>>	Mad Scientist !!Q11PG81nz2n Sat Jul 30 02:35:19 2011 No.3475100 >>3475057 >OP, I wish you luck. You are a rad dude. :3c Brb, gonna go spray paint this bad boy.

>>	Anonymous Sat Jul 30 02:36:19 2011 No.3475105 mad scientist what's your background, age/education/etc

>>	Mad Scientist !!Q11PG81nz2n Sat Jul 30 02:42:19 2011 No.3475123 >>3475105 >mad scientist what's your background, age/education/etc I'd rather not give out my personal information on the internet if you don't mind it too much.

>>	Anonymous Sat Jul 30 02:43:19 2011 No.3475126 >>3475123 im not asking for personably identifiable stuff, just like idk "studied physics/math/engineering/whatever" or something

>>	Anonymous Sat Jul 30 02:44:19 2011 No.3475128 So MS, how long till you've got a human sized hamture-derived underwater habitat?

>>	Mad Scientist !!Q11PG81nz2n Sat Jul 30 02:45:19 2011 No.3475131 >>3475126 3dcg. My major is completely unrelated to underwater stuff, it's just something I'm interested in. I'm 27. Just finished spray painting the helmet. Didn't have any blue left so I went with black, should look okay.

Mad Scientist !!Q11PG81nz2n Sat Jul 30 02:46:19 2011 No.3475137
File: 24 KB, 740x387, habitathelmet.png [View same] [iqdb] [saucenao] [google]

>>3475128

>So MS, how long till you've got a human sized hamture-derived underwater habitat?

I give it a year, tops. That was part of the original plan, the helmet is only stage 1.

Anonymous Sat Jul 30 02:50:19 2011 No.3475152

Are you the guy who posted all that underwater living stuff a few months ago?

If so, did you save your threads and can you zip them and put them on megaupload or mediafire or something?

And maybe an anonymous email address in case I want to contact you in future? If you create a junk gmail account I can email my address to you. Then you can email to that address from whatever address you wish. The junk one can then be forgotten, to gather any junk mail as a result of its being known publically.

>>	resident /sci/ economist !!0CqB7P/574e Sat Jul 30 02:52:19 2011 No.3475160 Hey MS, One of these days Im going to donate. I just want to say, Ive thrown my personal school email, which includes part of my first and land name up on /sci/ tons of time and Ive never had any trouble.

Anonymous Sat Jul 30 02:53:19 2011 No.3475166

If I had any kind of disposable income, I'd invest in a business with you.

Make these helmets affordable, but not so cheap that people question their safety. Maybe 1500. Still expensive enough to turn a nice profit and seem good, cheap enough for more people to afford.

>>	MrGuy#gorbachev Anonymous Sat Jul 30 02:54:19 2011 No.3475169 I can send an email containing a code word, then post the code word again in this thread in ten minutes, using this tripcode to confirm my pseudo-identity, I am interested in what I call 'the field of underwater living'.

>>	MrGuy !Sqe/VOO63Q Sat Jul 30 02:55:19 2011 No.3475174 >>3475169 Fuck. New to tripcodes. Trying again.

>>	MrGuy !Sqe/VOO63Q Sat Jul 30 02:56:19 2011 No.3475180 >>3475152 >>3475169 >>3475174 Note that I did not re-use 'gorbachev'.

>>	Anonymous Sat Jul 30 02:58:19 2011 No.3475191 >>3475137 Damn, you really know how to get shit done. I wish I had your level of ambition.

Anonymous Sat Jul 30 02:58:19 2011 No.3475195

>>3475180
Hi there!

You seem to have made a bit of a mistake in your post. Luckily, the users of 4chan are always willing to help you clear this problem right up! You appear to have used a tripcode when posting, but your identity has nothing at all to do with the conversation! Whoops! You should always remember to stop using your tripcode when the thread it was used for is gone, unless another one is started! Posting with a tripcode when it isn't necessary is poor form. You should always try to post anonymously, unless your identity is absolutely vital to the post that you're making!

Now, there's no need to thank me - I'm just doing my bit to help you get used to the anonymous image-board culture!

>>	resident /sci/ economist !!0CqB7P/574e Sat Jul 30 03:00:19 2011 No.3475203 File: 15 KB, 248x251, Question_mark_dog.jpg [View same] [iqdb] [saucenao] [google] >>3475195 What are you talking about? What are you talking about?

Mad Scientist !!Q11PG81nz2n Sat Jul 30 03:02:19 2011 No.3475211

>>3475191

Why not start up a project of your own? It seems like you want to. It's easy to get motivated when you find the right idea, something you don't get tired of and can see through to the finish. Just keep buying parts and working on the prototype every day and before you know it you're done! :3

Of course, then it's time to build the Mk.II.

>>	MrGuy !Sqe/VOO63Q Sat Jul 30 03:02:19 2011 No.3475214 >>3475203 Old copypasta detected.

>>	Anonymous Sat Jul 30 03:08:19 2011 No.3475240 Why so many screws? It make it even easier to leak and you'll have to use more sealant.

>>	MrGuy !Sqe/VOO63Q Sat Jul 30 03:09:19 2011 No.3475247 So.... your answer is no, Mad Scientist? ...and no website / no forum to contact you through?

Mad Scientist !!Q11PG81nz2n Sat Jul 30 03:12:19 2011 No.3475257
File: 907 KB, 902x678, ohai.png [View same] [iqdb] [saucenao] [google]

>>3475240

>Why so many screws? It make it even easier to leak and you'll have to use more sealant.

It holds the acrylic panel closer to the rim. I can't count on sealant alone. Every underwater window uses lots of bolts, pic related.

>>3475247

Here's the blog. http://hampture.blogspot.com/

>>	Anonymous Sat Jul 30 03:17:19 2011 No.3475283 >>3475257 Awesome just.... awesome

>>	MrGuy !Sqe/VOO63Q Sat Jul 30 03:17:19 2011 No.3475286 >>3475257 >Here's the blog. http://hampture.blogspot.com/ OK, good enough for me, forget all the crypto-handshake stuff.

>>	Anonymous Sat Jul 30 03:18:19 2011 No.3475287 >>3475257 That's overengineering. The picture of that underwater window is a perfect example. Every screw creates a potential for leaks. Is there a rational explanation for this?

resident /sci/ economist !!0CqB7P/574e Sat Jul 30 03:20:19 2011 No.3475296

>>3475287

How do you know its over engineering?

Ive glued enough wood together to know. I assume the sealant works the same way. Its not so much that the screws do a better job. Its that two glue or seal two pieces of material you need a lot of pressure the screws provide, and once its dried the screws cant be removed. If you just put the sealant together, the bond would be really flimsy.

Mad Scientist !!Q11PG81nz2n Sat Jul 30 03:21:19 2011 No.3475300

>>3475287

I explained it. The hull penetrations are less of a concern than having a window where large stretches of the edge aren't being held tightly against where it's mounted. That's where the water is more likely to come through. Screws are easy to seal, just dip them in silicone gel and screw them into place.

>>	Anonymous Sat Jul 30 03:22:19 2011 No.3475304 File: 9 KB, 150x150, oahu_submarine6-150x150.jpg [View same] [iqdb] [saucenao] [google] >>3475257 This one looks more reasonable.

>>	Mad Scientist !!Q11PG81nz2n Sat Jul 30 03:25:19 2011 No.3475315 >>3475304 The bolts are there, but hidden by a cosmetic rim. Why do you hate bolts so much?

>>	Anonymous Sat Jul 30 03:27:19 2011 No.3475319 >>3475300 Oh, so the extra screws are there because frame isn't perfectly flat? But what about the glass? Surely, you can't apply too much pressure or the glass will break.

>>	Mad Scientist !!Q11PG81nz2n Sat Jul 30 03:28:19 2011 No.3475327 >>3475319 It isn't glass. It's acrylic, otherwise I wouldn't have been able to drill holes for the screws.

>>	Anonymous Sat Jul 30 03:28:19 2011 No.3475329 >>3474792 what's the list of all the materials you used in the process of making this, and how much have you spent so far?

>>	Anonymous Sat Jul 30 03:29:19 2011 No.3475330 >>3475315 Look at the picture closer. There are bolts, and only a few of them.

>>	resident /sci/ economist !!0CqB7P/574e Sat Jul 30 03:29:19 2011 No.3475333 >>3475315 Haha... "Fuck Bolts"

Mad Scientist !!Q11PG81nz2n Sat Jul 30 03:32:19 2011 No.3475346

>>3475329

>what's the list of all the materials you used in the process of making this, and how much have you spent so far?

I didn't really keep track. I think the jug was $13, the screws were $8 or so, the panels were $6.50 each, the electric air compressor was $100, the spigot was $1.50 and the air hose was $20 or so. The spray paint was left over but cost something like $2.50.

That totals $151.50. Could be done much cheaper as a single piece of injection molded transparent thermoplastic with embedded weights. With mass production the helmet by itself would be no more than $20.

Mad Scientist !!Q11PG81nz2n Sat Jul 30 03:32:30 2011 No.3475344 [DELETED]

>>3475329

>what's the list of all the materials you used in the process of making this, and how much have you spent so far?

I didn't really keep track. I think the juge was $13, the screws were $8 or so, the panels were $6.50 each, the electric air compressor was $100, the spigot was $1.50 and the air hose was $20 or so. The spray paint was left over but cost something like $2.50.

That totals $151.50. Could be done much cheaper as a single piece of injection molded transparent thermoplastic with embedded weights. With mass production the helmet by itself would be no more than $20.

>>	Anonymous Sat Jul 30 03:33:19 2011 No.3475349 File: 4 KB, 259x194, images.jpg [View same] [iqdb] [saucenao] [google] OP, how is your diving helmet functionally different than a transparent bucket?

Mad Scientist !!Q11PG81nz2n Sat Jul 30 03:34:19 2011 No.3475355

>>3475330

Then I don't know. What I do know is that the juge was made of flexible plastic and I need all those bolts to keep the edge of the holes I cut out tightly pressed against the acrylic panels. Trust that I did what was necessary, and that you would use this many bolts as well if you attempted the same project.

>>	Anonymous Sat Jul 30 03:37:19 2011 No.3475364 is that some special type of hose or is it a regular garden watering hose?

Mad Scientist !!Q11PG81nz2n Sat Jul 30 03:37:19 2011 No.3475365
File: 28 KB, 329x385, divehelmet.jpg [View same] [iqdb] [saucenao] [google]

>>3475349

>OP, how is your diving helmet functionally different than a transparent bucket?

Curved transparent surfaces distort your view like a lens when you're underwater. If you reference the illustration earlier in the thread you'll see my original plan *was* to use a transparent plastic bucket. I bought one and stuck it in the test tank, and the view through it was so distorted as to make it worthless. It's why aquanaut helmets typically have flat faceplates (pic related) and it's why mine has 'em.

Please trust that I am not a moron and have thought of things like that.

Mad Scientist !!Q11PG81nz2n Sat Jul 30 03:39:19 2011 No.3475369

>>3475364

>is that some special type of hose or is it a regular garden watering hose?

It's not a garden hose. It's an automotive air compressor hose. A garden hose would not have connected to the compressor properly without a custom adapter, I don't know why I'd ever use a garden hose in light of that.

I've installed a screw-in spigot compatible with the air compressor hose on the helmet too so the hose is removable and can be extended with additional 100 foot lengths as needed.

>>	Anonymous Sat Jul 30 03:39:19 2011 No.3475371 >>3475365 >Please trust that I am not a moron and have thought of things like that. Wow, stop being a pussy and just call me a moron for not knowing that. Jeez. Do you have anxiety issues or something?

>>	Mad Scientist !!Q11PG81nz2n Sat Jul 30 03:40:19 2011 No.3475377 >>3475371 >Wow, stop being a pussy and just call me a moron for not knowing that. Jeez. Do you have anxiety issues or something? I don't want to be needlessly rude. I like you guys.

>>	Anonymous Sat Jul 30 03:41:19 2011 No.3475379 >>3475371 he be about to dive into deep water with something that looks like it was custom built by mexican rednecks >nope >no anxiety at all

Anonymous Sat Jul 30 03:42:19 2011 No.3475383

OP, something you probably didn't think about:

With a flexible hose, there's air pressure on it.

As you go down deeper, the pressure will inevitably constrict the host to the point where no air will be flowing through.

You could solve this by overpressuring the intake, then using a pressure control valve to regulate when it brings in new air. You'd definitely need an active air removal system though for this use.

Also, most things like air-movers are designed for short range, they're not designed for columns of air. They typically perform very poorly or not at all when displacing columns. This similar in the way that DC electricity only goes about 50 miles before it becomes useless while AC can transmit hundreds of miles with little loss.

I apologize if you considered all this, but I wouldn't want you to get down 50 feet and have your hoses compress shut.

>>	Anonymous Sat Jul 30 03:44:19 2011 No.3475388 >>3475383 Also, yeah, with the water pressure on a flexible hose, you could even burn out your compressor or tank if there was too much back-pressure.

>>	Anonymous Sat Jul 30 03:44:19 2011 No.3475393 >>3475365 But the since the bucket is made from plastic, you can apply heat to one side to make it flat.

Mad Scientist !!Q11PG81nz2n Sat Jul 30 03:46:19 2011 No.3475396

>>3475383

>OP, something you probably didn't think about: With a flexible hose, there's air pressure on it.

Not while the compressor is on. It will be sending down air at higher pressure than ambient.

>As you go down deeper, the pressure will inevitably constrict the host to the point where no air will be flowing through.

I'd have to go much deeper than I plan to for that to happen.

>Also, most things like air-movers are designed for short range, they're not designed for columns of air. They typically perform very poorly or not at all when displacing columns. This similar in the way that DC electricity only goes about 50 miles before it becomes useless while AC can transmit hundreds of miles with little loss.

It's not an air mover. It's a quite powerful 100% duty cycle electric pancake air compressor. It's overkill for this task as it should be.

>I apologize if you considered all this, but I wouldn't want you to get down 50 feet and have your hoses compress shut.

It's totally fine, in fact I appreciate the concern.

>>	Anonymous Sat Jul 30 03:49:19 2011 No.3475402 >>3475240 How on earth could it leak if the helmet is subject to positive pressure when in use?

Mad Scientist !!Q11PG81nz2n Sat Jul 30 03:49:19 2011 No.3475403

>>3475393

>But the since the bucket is made from plastic, you can apply heat to one side to make it flat.

Sounds like it would work on paper but in practice you'd get a brown tinted melty looking mess. And you'd get only one viewing angle. Mine has three. Bucket was a good place to start but not what turned out to be necessary.

>>3475388

>Also, yeah, with the water pressure on a flexible hose, you could even burn out your compressor or tank if there was too much back-pressure.

Automotive air compressors deal with enormous back pressure when topping up already full tires. They're designed for it. This application will be weaksauce so far as the compressor is concerned.

>>	Anonymous Sat Jul 30 03:51:19 2011 No.3475409 >>3475402 You're assuming the compressor won't have a chance of failing. For the sake of safety, the diving equipment should be as leak proof as possible.

>>	Anonymous Sat Jul 30 03:51:19 2011 No.3475414 Mad scientist are you taking down a scuba tank for the first journey just in case?

>>	Mad Scientist !!Q11PG81nz2n Sat Jul 30 03:54:19 2011 No.3475418 File: 123 KB, 904x850, spareair.jpg [View same] [iqdb] [saucenao] [google] >>3475414 >Mad scientist are you taking down a scuba tank for the first journey just in case? Yes, a tiny one good for 57 breaths.

>>	Anonymous Sat Jul 30 04:01:19 2011 No.3475441 >>3475418 good idea, I have faith that you can pull this off

>>	Anonymous Sat Jul 30 04:04:19 2011 No.3475449 >>3475418 Why did you switch from Clover to Algae?

>>	Mad Scientist !!Q11PG81nz2n Sat Jul 30 04:04:19 2011 No.3475450 >>3475441 I don't want your faith, just your confidence. Are we not seabros? :3

Mad Scientist !!Q11PG81nz2n Sat Jul 30 04:06:19 2011 No.3475457
File: 23 KB, 500x376, Algaebioreactor.jpg [View same] [iqdb] [saucenao] [google]

>>3475449

Higher O2 production and CO2 absorption capacity by far. It's why algae is used in industrial bioreactors to absorb the waste CO2 from natural gas plants (see pic)

>>	Anonymous Sat Jul 30 04:08:19 2011 No.3475471 >>3475450 faith confidence it all means the same to me haha but yes you do have it and we are seabros lol :D

>>	Anonymous Sat Jul 30 04:09:19 2011 No.3475475 Do you have any scubabro's to take pics of you using it? would love to see :)

>>	Mad Scientist !!Q11PG81nz2n Sat Jul 30 04:14:19 2011 No.3475507 >>3475475 Sure, I'll talk a buddy into taking action shots. And a video for Youtube as well.

>>	Anonymous Sat Jul 30 04:18:19 2011 No.3475528 how do your friends and loved ones feel about your hobby?

Mad Scientist !!Q11PG81nz2n Sat Jul 30 04:23:19 2011 No.3475542

>>3475528

Most find it exciting and interesting. The rest are more like "Oh shit he made another thing. He is always making some fucking thing. What does this one do? Are you going to space this time or making a helicopter for cats or what"

Anonymous Sat Jul 30 04:32:19 2011 No.3475566
File: 65 KB, 500x328, CH-47-Chinook-helicopter-202.preview.jpg [View same] [iqdb] [saucenao] [google]

>>3475542
Cat helicopter... i like the sound of that. It would have to be this type of copter for maximum stability, but with a clear case so you could see inside it, and with a padded bottom. Also a remote deployable parachute just incase it malfunctions.

>>	Anonymous Sat Jul 30 04:36:19 2011 No.3475586 >>3475457 Can you quantify O2 production/CO2 absorption please? And the Oxygen consumption of each hampster? Cheers

Mad Scientist !!Q11PG81nz2n Sat Jul 30 04:41:19 2011 No.3475603

>>3475586

Yes, courtesy of another /sci/lon:

"using 700 to 800 ml of 1.1 to 1.5% packed volume of Chlorella pyrenoidosa
with a CO2 concentration of 2% and O2 concentration of 20%:
CO2 consumption = 1.023 ml/min
O2 production 1.12 ml/min
source: http://aem.asm.org/cgi/reprint/14/4/552.pdf

From my own rough calculation, small candle CO2 production: 60 ml / min

Hamster O2 consumption: 2.5 ml / min (resting), 5.0 ml/min (exercising)."

source: http://books.google.com/books?id=PKxPVW25SUYC&pg=PA87&lpg=PA87&dq=hamster+co2+consumptio
n&source=bl&ots=fnLrzaMowQ&sig=0Vk9JFw3PWbbWBQy9f1ECj2sngw&hl=en&ei=EdEHTtiHFojk
0QHLoKy8DA&sa=X&oi=book_result&ct=result&resnum=4&ved=0CDEQ6AEwAw#v=onepage&
q&f=false

>>	Anonymous Sat Jul 30 04:59:19 2011 No.3475656 >>3475603 So if the average man has VO2 of 3500 cm^3/minute then, allowing 500cm^3 error. Theoretically one would need 2.7m^3 of 1.1 to 1.5% packed volume of Chlorella pyrenoidosa... That's not THAT much really... Hmmm...

>>	Anonymous Sat Jul 30 05:01:19 2011 No.3475665 >>3475656 Yeah, but it all needs decent light exposure.

>>	Anonymous Sat Jul 30 05:06:19 2011 No.3475679 >>3475665 I just read: "At least 5 watts of compact fluorescent lighting per gallon of water (Minimum of 50 watts)." So there's 220 gallons per m^3 so that's about 3kWs of light.

>>	Anonymous Sat Jul 30 05:08:19 2011 No.3475681 >>3475679 fffuck I think LEDs could probably cut that down signicantly if you put them in in nets, but3 kilowatts?

>>	Anonymous Sat Jul 30 05:13:19 2011 No.3475691 >>3475681 About 100 fluorescent tubes which is like $600 for the bulbs alone. But tubes have an efficiency of like 15% to 60% so might be a way to cut down the number of lights lots.

>>	Anonymous Sat Jul 30 05:18:19 2011 No.3475702 >>3475691 $830 including fittings

>>	Anonymous Sat Jul 30 13:01:19 2011 No.3477118 OP have you run the Hampture III with algae?

Advanced search
Text to find
Subject [?]Search by post subject. Leave empty for any.
Username [?]Search for user name. Leave empty for any user name.
Tripcode [?]Search for tripcode. Leave empty for any.
Email [?]Search by email. Leave empty for any.
Filename [?]Search by image filename. Leave empty for any.
From Date [?]Enter what date to start searching from. Format is YYYY-MM-DD
To Date [?]Enter what date to start searching until. Format is YYYY-MM-DD
Image hash
Search in	All Posts OPs Only
Deleted posts	Show all posts Show only deleted posts Only show non-deleted posts
Internal posts	Show all posts Show only internal posts Show only archived posts
Order	New posts first Old posts first
Capcode	All Posts Only by Users Only by Mods Only by Admins Only by Developers
Results	Posts Threads
Action	[ Simple ]

/sci/ - Science & Math