Mau5Capades: builds & grow journal
- Thread starter Growmau5
- Start date
Growmau5
Well-Known Member
hello Son,I Do Believe I'm Your Long Lost Son. Hello Father
I am sorry I never spoke to your mother again, after that night. But you are a good boy, and I will put you in my will.
Sincerely
Dadmau5
The Green Griffin
Well-Known Member
Hey GM!
1st: Don't fight it, you are insane (or at least highly abnormal) - in a really good way. I should know, it feels like you are a brother from a different mother except I'm older and dumber. And I worked at NASA.
2nd: I bet the Carbon fiber fixture is easy to keep clean, it keeps cabling out of the way and safe, and is off the charts on the cool factor. So Mr. Dawg, there ARE other advantages. Expensive, but I mention how fricken cool it is??? And it matches the interior of the McLaren Grow Van i dreamed about last night. Pretty sure it would be the quickest grow room on the planet. Planning on running experiments on the results of rapid acceleration (and deceleration) on the growth of landrace Indicas. I'll get back to ya on results.
3rd: The hollow HS pins are an intriguing idea, doubles the surface area of the pins.
Do you think you might need some vent holes in the bottom of those hollow tubes in order to allow airflow up and out....otherwise there will be considerable drag between air upflow and inflow/downflow which would diminish their effectiveness?? You've probably already thought of this....Hope this brought ya a smile, bro. Really appreciate ya.
ttystikk
Well-Known Member
Now THAT'S nifty asf!
Growmau5
Well-Known Member
@The Green Griffin I take that as a compliment! insanity can lead to some pretty cool innovative stuff sometimes. I started getting into composites at the request of my Dad for some custom car parts he wanted to make. Its not really practical for grow lights, but practical has never really been high on my list.
On the hollow pin design, I have never seen it commercially available, but that doesn't mean it doesn't exist. I think you are spot on, holes in the base of the sink everywhere but under the COB would potentially have the same effect as turning a pin heatsink at an angle(like that article everyone keeps linking).
i may be reaching a little here, but the heat created by the field of photons coming from the LES could create enough of a micro climate to cause a convection current to push air thru the holes in the base, up thru the pins and out the top. this could be the most efficient passive design available. maybe ill knock the dust off this project and get the prototype out for testing.
now. how do I attach the pins to the base, thats where im stuck. I can make a jig out of wood or metal so the pins end up straight and parallel. but do I use:
-2 part thermal epoxy
-braise them with a torch and AL filler
-TIG weld them (time, energy, low skill level at TIG) possible warping of base
so IDK.
On the hollow pin design, I have never seen it commercially available, but that doesn't mean it doesn't exist. I think you are spot on, holes in the base of the sink everywhere but under the COB would potentially have the same effect as turning a pin heatsink at an angle(like that article everyone keeps linking).
i may be reaching a little here, but the heat created by the field of photons coming from the LES could create enough of a micro climate to cause a convection current to push air thru the holes in the base, up thru the pins and out the top. this could be the most efficient passive design available. maybe ill knock the dust off this project and get the prototype out for testing.
now. how do I attach the pins to the base, thats where im stuck. I can make a jig out of wood or metal so the pins end up straight and parallel. but do I use:
-2 part thermal epoxy
-braise them with a torch and AL filler
-TIG weld them (time, energy, low skill level at TIG) possible warping of base
so IDK.
Wisher2
Well-Known Member
@Growmau5
I wasnt sure if it was pure carbon fiber or and overlayment of a figerglass piece.....
in the car audio industry.....and I will speak for myself....the look of carbon fiber is hot trash.....unless mid 2000's import tuner is the look you are after (not you specifically)
so we would spary with some trusty Montana paint and gel coat the piece....fiberglass might be more cost effective at the price of a lower strength....although you dont really need strength when it comes to an enclosure for a light fixture.....good on you for being super inovative......
I wasnt sure if it was pure carbon fiber or and overlayment of a figerglass piece.....
in the car audio industry.....and I will speak for myself....the look of carbon fiber is hot trash.....unless mid 2000's import tuner is the look you are after (not you specifically)
so we would spary with some trusty Montana paint and gel coat the piece....fiberglass might be more cost effective at the price of a lower strength....although you dont really need strength when it comes to an enclosure for a light fixture.....good on you for being super inovative......
Growmau5
Well-Known Member
i used to burn rice myself, lol. I tried to be tasteful with my ride, but the mentality was if a little fiber is good, then a shit load of it everywhere is better right, lol.
oh! on gelcoats, am I going to have to invest in one of those $150+ gelcoat spray guns, or is there a work around. the harbor freight texture sprayer with the 4mm tip and the Preval spray kits dont work worth dick for quality results.
ttystikk
Well-Known Member
Great idea! As a former NASA employee, I'm sure you know of Colonel Stapp? He did some high G work (on) himself, you two should collaborate.Hey GM!
1st: Don't fight it, you are insane (or at least highly abnormal) - in a really good way. I should know, it feels like you are a brother from a different mother except I'm older and dumber. And I worked at NASA.
2nd: I bet the Carbon fiber fixture is easy to keep clean, it keeps cabling out of the way and safe, and is off the charts on the cool factor. So Mr. Dawg, there ARE other advantages. Expensive, but I mention how fricken cool it is??? And it matches the interior of the McLaren Grow Van i dreamed about last night. Pretty sure it would be the quickest grow room on the planet. Planning on running experiments on the results of rapid acceleration (and deceleration) on the growth of landrace Indicas. I'll get back to ya on results.
3rd: The hollow HS pins are an intriguing idea, doubles the surface area of the pins.
Hope this brought ya a smile, bro. Really appreciate ya.
Growmau5
Well-Known Member
ok, now you woke up my brain cells! and recommendation on filling fluid? mineral oil?
Evil-Mobo
Well-Known Member
PC water cooling fluid?
The Green Griffin
Well-Known Member
It was most certainly meant as a compliment.
I think you're correct regarding the convection current pushing air thru the base (or perhaps more accurately sucking air in from the bottom of the HS). If you figure out a good way to fasten those pins effectively to the base and have airflow channels from underneath it would seem to be an incredibly efficient HS. For a shorter term improvement, what about drilling holes thru the base of the non-hollow pin heatsinks - between the pins - to allow airflow into the area between pins. Would diminish thermal mass but would increase both surface area (slightly) and improve airflow to the pins. Would need to test different number and size holes (and patterns?) to find the sweet spot between mass loss and surface area if there is one. The holes could even be angled slightly to exit between the center pins and the second ring. Might give results more akin to tilted even when level, but I still like the idea of hollow pins as far as potential goes. Understand it would reduce conductivity of the pins, but that would that be more than offset by the by the extra surface area inside the pins and improved airflow?
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sixstring2112
Well-Known Member
Idk about the hollow factor not being better than solid pins.if the pin is hollow technically it would have 2x the surface area,then factor in the air movement through it.i bet the heat rising from the cob will create a nice updraft through those hollow voids but idk just my thinking i guess.
I would go the brazing with aluminum rod's route @Growmau5
Just because its much less heat than tig and the rods will suck into each joint rather than having to make a circular weld around each pin.sounds like a pita haha
I would go the brazing with aluminum rod's route @Growmau5
Just because its much less heat than tig and the rods will suck into each joint rather than having to make a circular weld around each pin.sounds like a pita haha
ttystikk
Well-Known Member
If the hollow pins had openings at the base, they could cause a convection current of air to flow through them, improving heat transfer.
The Green Griffin
Well-Known Member
I would if he wasn't dead. A legend and a true American hero. That dude took over 46 Gs, the most ever taken by a human (voluntarily at least!). His rocket sled makes the McLaren look like a barge. I worked at Goddard in DC on unmanned missions so I never met him but I'm in awe.
ttystikk
Well-Known Member
I'm gratified to see my nerd jokes don't fall on deaf ears. The man is a legend, no doubt.
Wisher2
Well-Known Member
@Growmau5
we used to use a brush and then roll it....but now we use the es 100.....http://www.shopmaninc.com/equipment.html
Im sure the gravity feeds would work as well but have never used one
we used to use a brush and then roll it....but now we use the es 100.....http://www.shopmaninc.com/equipment.html
Im sure the gravity feeds would work as well but have never used one
I'd think the small diameter would impede passive air flow a lot. that's why I suggested heat pipes. the evapo\condens cycle would probably be more effective at moving the heat to the other end of the pin.
besides that aluminum thermal conductivity is much higher than metal to air dispersion
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robincnn
Well-Known Member
Kevlar frame would go well with kevlar optics in ISS
Nees to keep kush and tomatos safe from asteroid/aliens attack
Do we have some monos in the middle
I agree with purple.hollow pin will have less conductivity than solid. So you will need to reduce pin height.
Some boundry layer issues with air..so pin diameter will need to increase for air to flow inside pins.
Hollow pins can help vent VOC too
Good luck. This is something new.
Sorry no clue how to attach hollow pins
Pin heatsink already so efficient. 500grams pin heatsink can handle 1.4 amps. You guys want even more efficient heatsinks?
Any one wants to run passive 4 cobs with HLG 320
Fluid pins. Again pins would need to be thicker for fluid and at that point you choose if you want more pins or fewer liquid filled pins.
Nees to keep kush and tomatos safe from asteroid/aliens attack
Do we have some monos in the middle
I agree with purple.hollow pin will have less conductivity than solid. So you will need to reduce pin height.
Some boundry layer issues with air..so pin diameter will need to increase for air to flow inside pins.
Hollow pins can help vent VOC too
Good luck. This is something new.
Sorry no clue how to attach hollow pins
Pin heatsink already so efficient. 500grams pin heatsink can handle 1.4 amps. You guys want even more efficient heatsinks?
Any one wants to run passive 4 cobs with HLG 320
Fluid pins. Again pins would need to be thicker for fluid and at that point you choose if you want more pins or fewer liquid filled pins.
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Growmau5
Well-Known Member
@Wisher2 thanks for the reply man. ill try the brush and roll method on my next little mold and see if the investment in a proper gun is necessary(sure would be nice to own tho)
@The Green Griffin @PurpleBuz you guys bring up some interesting points to consider. I was hung up on hollow rod after getting 120 ft of it for $19 because it was slightly bent. This entire conversation is giving me a lot of ideas and things to think about.
It may work out to be worth it, as a hobbiest , trying to shave a few degrees. It also may be a fools errand. Either way, I get a lot of joy out of fabricating, testing, etc. Ill put a flared design on the testing block as well, since they will be much easier for most people to obtain.
@robincnn great points as well. why are the laws of physics so damn absolute! (guess thats why they are called laws and not theories).
the little holes are not for monos, they are speed dimples duh. lolololol
@The Green Griffin @PurpleBuz you guys bring up some interesting points to consider. I was hung up on hollow rod after getting 120 ft of it for $19 because it was slightly bent. This entire conversation is giving me a lot of ideas and things to think about.
It may work out to be worth it, as a hobbiest , trying to shave a few degrees. It also may be a fools errand. Either way, I get a lot of joy out of fabricating, testing, etc. Ill put a flared design on the testing block as well, since they will be much easier for most people to obtain.
@robincnn great points as well. why are the laws of physics so damn absolute! (guess thats why they are called laws and not theories).
the little holes are not for monos, they are speed dimples duh. lolololol