Bob Myers Posted August 3, 2009 Share #1 Posted August 3, 2009 Any one ever think of trying to put a peltier junction in a helmet for cooling? Or maybe put one (or more) in a vest? I know they are rigid and won't comform to any radius but I found some that are only 40mm sq. Sounds like a good size to put top center of a helmet. Ones on market now are pretty low current draw compared to ones I played with several years ago. Link to comment Share on other sites More sharing options...
tsigwing Posted August 3, 2009 Share #2 Posted August 3, 2009 Any one ever think of trying to put a peltier junction in a helmet for cooling? Or maybe put one (or more) in a vest? I know they are rigid and won't comform to any radius but I found some that are only 40mm sq. Sounds like a good size to put top center of a helmet. Ones on market now are pretty low current draw compared to ones I played with several years ago. I would think that you would have a hard time mounting one, since you have to have a large heat sink to absorb the heat you are pulling out. Also, you would need to distribute the cooling across the entire helmet, and I would think it would probable cause some pretty bad headaches if it was too cool and too concentrated. Link to comment Share on other sites More sharing options...
Freebird Posted August 3, 2009 Share #3 Posted August 3, 2009 I too think it would be difficult to do but it is an interesting idea. At one time, there was a helmet on the market with some sort of cooling system in it but I've not seen anything about it in a long time. Link to comment Share on other sites More sharing options...
Bob Myers Posted August 3, 2009 Author Share #4 Posted August 3, 2009 Without a large external heatsink the effectiveness would be reduced drastically, which would relate to a smaller temp differential. One I played with years ago was with the intent of using the heat side, and from that I remember that no heat sink whatsoever resulted in about a 20ºf drop only, not the 70ºc that you get under optimum conditions.10 or 15ºf drop would be a considerable difference, inside the helmet or a vest. I do agree the task of spreading it around would be tough. Haven't actually got one now to play with but ebay is loaded with them. Link to comment Share on other sites More sharing options...
Freebird Posted August 3, 2009 Share #5 Posted August 3, 2009 Here's one example that I ran across. I've never seen anything else about it though. http://www.rtukltd.com/air-conditioned-helmets.html Link to comment Share on other sites More sharing options...
Condor Posted August 3, 2009 Share #6 Posted August 3, 2009 I remember a few years ago seeing a close out on an AC Helmet. They had a small scoop on the toip that directed the air flow thru a fan to produce enough power to work a thermocoupler. Interesting but since they were on close out they didn't sell all that well, and probably didn't work that well either.... Link to comment Share on other sites More sharing options...
Guest tx2sturgis Posted August 3, 2009 Share #7 Posted August 3, 2009 So...isnt the purpose of a helmet to save your noggin in the event of a crash? And dont they do that by using the crushable outershell and inner styrofoam? And wouldnt a metallic heatsink, maybe with sharp aluminum edges compromise that ability? As in: metal wedge driven into your skull in the event of a low speed 'get-off'? Makes me cringe at the thought. I'll pass. Link to comment Share on other sites More sharing options...
Bob Myers Posted August 3, 2009 Author Share #8 Posted August 3, 2009 Yea, the one marketed by the folks in UK appears to have "things" that could bite if provoked by falling down on them. The 40mm ceramics I had scoped out could easily fit inside the helmet, as with what freebird said, very diminished capacity with no heat sink. They were only 4mm thick, depending on hot hot they get as to whether the styrofoam would stand it or not. Would not like to melt that stuff. Link to comment Share on other sites More sharing options...
SaltyDawg Posted August 3, 2009 Share #9 Posted August 3, 2009 Or someone could drop some coin on this one and give it a test ride. http://www.coolheadz.net/ Link to comment Share on other sites More sharing options...
Bob Myers Posted August 3, 2009 Author Share #10 Posted August 3, 2009 $250 for a watercooled helmet addon. I would guess that to be some what similar to the cool suit things the NASCAR guys have? Pumping cool water through the do rag would work but I would have to buy yet another helmet, the one I have broken in and fitted to my xxx melon already fits tight enough with out "shimming" it. Link to comment Share on other sites More sharing options...
Dragonslayer Posted August 3, 2009 Share #11 Posted August 3, 2009 Here's one example that I ran across. I've never seen anything else about it though. http://www.rtukltd.com/air-conditioned-helmets.html Wonder what the cost is and where you can get them. Link to comment Share on other sites More sharing options...
RPG Posted August 3, 2009 Share #12 Posted August 3, 2009 We use white helmets for travelling, much cooler than any of the darker colors. Link to comment Share on other sites More sharing options...
petekadish Posted August 3, 2009 Share #13 Posted August 3, 2009 I would love a cooler helmet! When I am wearing a helmet and the temperatures rise, I experience scalp itch to the point where I just want to fling my helmet off the side of the road. It's not my shampoo (or lack thereof), which causes this reaction, but is just an acute sensitivity to wearing things (even ball caps) on my head when it's hot. I have tried (and I own), several types of different styles of helmets. And, all of them after so long push my endurance to the breaking point. I have also tried different kinds of doo-rags which do help a little, but they don't solve the problem. I have only met a couple other riders who experience what I often refer to as Helmet Fleas to the same degree which I do. It's not a matter of cleanliness, just sensitivity which reacts in unbearable itching. Perhaps, it's an allergic reaction to the foam core inside helmets. I don't know. Because of this situation, I often compromise my safety and don't ride with a helmet. And, that's the only reason I don't wear one when I know that I ought too. I know that it's stupid, but you gotta do what you gotta do. I think that if there was a way to significantly improve the air-circulation inside a helmet, that it might help my situation out. Anyone else out there experience this problem? Pete. Link to comment Share on other sites More sharing options...
Guest tx2sturgis Posted August 3, 2009 Share #14 Posted August 3, 2009 (edited) I would love a cooler helmet! When I am wearing a helmet and the temperatures rise, I experience scalp itch to the point where I just want to fling my helmet off the side of the road. It's not my shampoo (or lack thereof), which causes this reaction, but is just an acute sensitivity to wearing things (even ball caps) on my head when it's hot. I have tried (and I own), several types of different styles of helmets. And, all of them after so long push my endurance to the breaking point. I have also tried different kinds of doo-rags which do help a little, but they don't solve the problem. I have only met a couple other riders who experience what I often refer to as Helmet Fleas to the same degree which I do. It's not a matter of cleanliness, just sensitivity which reacts in unbearable itching. Perhaps, it's an allergic reaction to the foam core inside helmets. I don't know. Because of this situation, I often compromise my safety and don't ride with a helmet. And, that's the only reason I don't wear one when I know that I ought too. I know that it's stupid, but you gotta do what you gotta do. I think that if there was a way to significantly improve the air-circulation inside a helmet, that it might help my situation out. Anyone else out there experience this problem? Pete. Buy a cheap black helmet and drill a million 1/2 inch holes in it!!! Ever notice a cycle helmet? http://media.rei.com/media/ll/d4f548e3-071f-481c-ba21-e81190108165.jpg Lots of holes and light as a feather. I read somewhere that these are better than nothing,( for motorcycle use) and provide a fair measure of protection AND comfort. You might try a helmet liner...or, a shorty helmet...I dunno...I have trouble wearing a helmet too...so...i got nothin! Edited August 3, 2009 by tx2sturgis Link to comment Share on other sites More sharing options...
Bob Myers Posted August 3, 2009 Author Share #15 Posted August 3, 2009 I have a couple of the peltier junctions or TEC as thy are commecially known on the way. We'll see what and where they will fit/work. If nothing else I could have Tina put them in a vest. Cool(no pun intended) thing about them is if you reverse the polarity they become a heater. Link to comment Share on other sites More sharing options...
StarQ Posted August 3, 2009 Share #16 Posted August 3, 2009 Exactly! So...isnt the purpose of a helmet to save your noggin in the event of a crash? And dont they do that by using the crushable outershell and inner styrofoam? And wouldnt a metallic heatsink, maybe with sharp aluminum edges compromise that ability? As in: metal wedge driven into your skull in the event of a low speed 'get-off'? Makes me cringe at the thought. I'll pass. Link to comment Share on other sites More sharing options...
SaltyDawg Posted August 3, 2009 Share #17 Posted August 3, 2009 You could always go with this to keep cool. http://ecomodder.com/blog/who-needs-air-conditioning-when-youve-got-ice-cold-water-running-through-your-shirt/ Link to comment Share on other sites More sharing options...
BigBoyinMS Posted August 3, 2009 Share #18 Posted August 3, 2009 Y'know, this has me thinking. A small radiator with a small pump mounted up front in the air flow, spaghetti sized siamesed tubing for feed and return and a thin fabric covered vinyl helmet liner made with coolant passages all through it to circulate the coolant. Have a connector on the helmet with one way valves and it would look just like an intercom set-up. Or instead of a helmet liner wear it like a do-rag and just put the helmet over it. Hmmm, with a bigger pump and radiator you could make a jump suit or jacket liner with hoody. I'm on a roll! I need a backer! LoL Link to comment Share on other sites More sharing options...
Guest tx2sturgis Posted August 3, 2009 Share #19 Posted August 3, 2009 (edited) Y'know, this has me thinking. A small radiator with a small pump mounted up front in the air flow, spaghetti sized siamesed tubing for feed and return and a thin fabric covered vinyl helmet liner made with coolant passages all through it to circulate the coolant. Have a connector on the helmet with one way valves and it would look just like an intercom set-up. Or instead of a helmet liner wear it like a do-rag and just put the helmet over it. Hmmm, with a bigger pump and radiator you could make a jump suit or jacket liner with hoody. I'm on a roll! I need a backer! LoL Be sure to have the liquid coolant colored blood red...great joke to play on the EMTs! I can see it now, fall down, hose comes loose...you get all this red fluid squirting out 30 feet......aw cmon...its funny! Edited August 4, 2009 by tx2sturgis Link to comment Share on other sites More sharing options...
BigBoyinMS Posted August 4, 2009 Share #20 Posted August 4, 2009 Be sure to have the liquid coolant colored blood red...great joke to play on the EMTs! I can see it now, fall down, hose comes loose...you get all this red fluid squirting out 30 feet......aw cmon...its funny! LOL I like it! Link to comment Share on other sites More sharing options...
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