Hot weather ATGATT solutions.

Discussion in 'The Perfect Line and Other Riding Myths' started by samadams0824, Jun 2, 2011.

  1. ph0rk

    ph0rk Doesn't Care

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    Pretty much every weekend trip I take from june (hell, may now) to september has temps in the mid 90's +. They're all "hundreds" of miles.

    On a 'strom, a calsci medium screen isn't enough windblock to make mesh work. If some mesh flows a lower amount of air it would probably be ok, but then it would be somewhat questionable from 80-90 degrees, compared to a vented solid jacket. When things are going right I can consume a bit less than a liter of water per 90 minutes in temps over 95. If I wear mesh I'll blow through almost two liters in that time, be drenched, and still feel thirsty and prematurely tired.

    Everyone and every bike is different, but in the southeast we have entire weeks where mesh won't cut it in the lowlands, especially riding over blacktop.

    I don't recommend mesh jackets to locals looking for something for hot weather. Of course, most locals would rather wear shorts and a t-shirt, so they don't ask all that often.

    For 10-20 minute commute trips? Sure. Of course in the Southeast you'll be half damp before you even turn the key.
    #61
  2. Corbeau

    Corbeau Been here awhile

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    I've nicknamed my Roadcrafter (not the light version) "the sauna". Commuting home today, 91 degrees and 80% humdity) I wore my "hot weather teaching" Bermudas and short sleeved dress shirt under the 'Stich. A wet bandanna around my neck and the contents of two ice cube trays down through the back vent made the 30 minute ride (avg speed, 30 mph) bearable.
    Mind you the temperature today was out of the ordinary.
    #62
  3. Mgbgt89

    Mgbgt89 Long timer

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    I soaked a shop towel in the water fountain before i left work today. Wrapped it around my neck and then zipped the jacket over it. Worked like a charm, even sitting in traffic. My jacket has zippered vents right below the shoulders, right where the towel was. Better than A/C. It was 94 today. Lots of bikes out today, and i didn't see a single other person ATGATT. Hand full of helmets, but that was it.
    #63
  4. bones_708

    bones_708 Been here awhile

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    I wear mesh in summer and it works for me. I do sometimes use cooling vests and I suppose the extra mosture may make some difference. Before the vest I would just drench a shirt at every stop when it was hot. Of course I'm no IB wanabe either. I stop often and take breaks anytime, when riding I just don't care when I get there.
    #64
  5. Dolly Sod

    Dolly Sod I want to do right, but not right now

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    Got to agree with your summation. Seems wearing mesh, and nothing else on an unfaired bike is the an issue at temps above 93 degrees.

    Stick a windshield on the bike that blocks the majority of the wind from hitting the rider and you've pretty much circumvented the "issue" with mesh gear.
    #65
  6. Wuwei

    Wuwei Long timer

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    Yesterday just happened to be right at the 93-degree threshold and I had my usual vented jacket (not mesh) with safety vest over and it was hot, but not unbearable for my 30-minute commute. The vents seem to provide enough air movement to provide some cooling by evaporating my sweat, but not so much as to dry me out. I was pretty soaked with sweat by the time I got home. One thing everyone should try is a white helmet, which I think helps a lot. Also, I suspect that helmet cooling is very important and that is where a lot of gear falls down. I know my helmet is deficient in the vent department. I personally do not like to ride without a full-coverage helmet and face screen. I wonder if manufacturers could make some sort of small water reservoir in the helmet that gradually fed a layer near your skull which would then evaporate and cool your head, and therefore your whole body?
    #66
  7. MotoTex

    MotoTex Miles of Smiles

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    Many years ago a motorcycle magazine did a comprehensive test and found that the color of a helmet had no measurable effect on the inside temperature.

    My guess is that the shock-absorbing foam lining makes an excellent insulator.

    However, for safety, a white helmet was found to be the color most often seen by other drivers. Perhaps this is because moto-cops wear white helmets?
    #67
  8. Wuwei

    Wuwei Long timer

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    I have read that too, but I find it really hard to believe. It seems to defy common sense. You can feel the difference yourself when you touch something black and something white that have been sitting in the sun for awhile. When I lived in the south I couldn't touch my steering wheel (black) if the car had been sitting in the sun for awhile, but the body of the car (white) was comfortable to the touch. I read a study somewhere that said if everyone in the south just painted the roofs of their houses white there would be a huge energy savings.
    #68
  9. SgtDuster

    SgtDuster Long timer

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    Comprehensive reading...:deal


    EPS Foam...liner...inside...helmet...insulation...

    :wink:
    #69
  10. MotoTex

    MotoTex Miles of Smiles

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    There's a little more to consider. If the helmet was completely closed and had a greenhouse of windows installed all around it, with objects and materials inside that would absorb the heat, then it would get just as hot as the inside of your car.

    Put a layer of foam over the interior surfaces of your car between the sun and the interior, vent it and fill the void with a liquid cooled object (like the rider's head in a helmet) and there will be less heat build up and better dissipation.

    The riding suit I wear is black and it doesn't absorb heat at all. It's one of the properties of the material.

    A dark painted helmet could become hot to the touch on the outside, but the inside remains essentially the temp of the rider's head.

    It is easier and less expensive to paint a roof of a house with a IR reflective paint, or use a material that does not absorb and radiate heat, than it is to place an inch or two of foam between the roof surface and the attic space, the way a helmet is made.

    Thermodynamics is an interesting thing to study and understand. There are a lot of aspects that can affect the transference and accumulation of heat.
    #70
  11. cliffy109

    cliffy109 Long timer

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    One thing to keep in mind is the type of riding that is being done. An IBR participant or even the guy on a long weekend trip is going to have different cooling needs than the commuter or the day tripper who doesn't go more than an hour at a time.

    Holding in moisture and preventing air flow to my skin is something I actively avoid. I wear mesh in the summer and it gets well above 93 here in VA. Its also a very humid 93+. I want all the air flow I can get for my 37 mile commute. I want the take advantage of any evaporative cooling that can be had. I am never more than 60 minutes away from a big gulp of water and I stay well hydrated before my commute so dehydration just isn't a concern.

    What is not possible is to soak my shirt, put ice on my neck or soaking my head. None of that gets me to my destination in a condition in which I can work.

    I'm not riding to ride. I'm riding to make it to and from work in the most enjoyable way possible. Mesh makes a big difference for me. I understand the down side in longer distance riding but for me, its the best solution.
    #71
  12. DAKEZ

    DAKEZ Long timer

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    :thumb ^^^
    #72
  13. Wuwei

    Wuwei Long timer

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    Yes, but even insulation will heat up eventually due to conduction from the black shell. So, even if air movement will mean the black helmet can remain as cool as a white helmet at speed that effect won't happen if say you're stuck in a traffic jam, or you just want to leave your helmet on your bike while you eat lunch.

    Here's what we all need--something that goes inside the helmet to keep you cooler.
    #73
  14. MotoTex

    MotoTex Miles of Smiles

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    Head skins, helmet liners and the materials in the article will certainly help.

    There is one thing that already goes inside your helmet to keep you cooler. Your head. It includes a very complicated organic temperature control system that uses a variety of methods to regulate the temperature of the brain to the exclusion of many other sub-systems under certain conditions.

    Manage the gear you wear to allow the temp of your body core to stay at 98.6F, coupled with proper hydration, and your head will remain comfy.

    Do some research on the heat conductivity of that foam and you will find your theory to represent negligible, if not imperceptible heat gain from the outer shell.

    When compared to the heat transfer by your bloodstream from the core to the head, there won't be enough heat conducting through the foam to make any significant difference in your comfort level.

    On the other hand, if you are not getting enough evaporative cooling from sweating, for any of a number of reasons (hydration, air flow, etc.) your core temperature will rise.

    There is also the mind over matter aspect, where if you believe that your head is hotter, your body might just do everything it can to meet your expectations.

    Think cool, be cool. Ommmmmmmmm. :D
    #74
  15. HouseOfDexter

    HouseOfDexter Flatlander

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    ahh...Heat...a subject dear to me :evil

    It North Texas...we see both types...Dry Heat...and the Nasty Humid Heat...

    This weekend did 900 miles in 93-95F in pretty much Dry Heat...On my Triumph Thunderbird Sport...<It's a totally naked bike...not even a FlyScreen>...I wore WalMart Under Armor knockoff, Leather Jacket...A* TX-1(with A* Bionic 2 Jacket under it)...it has a small strip of perforations along the shoulder/collar bone area...and a stretchy mesh type fabric on the underside of the sleeves. My Pants are Full Textile with no vents. During most of the ride. I just re-hydrated with water. On the last 200 miles on Sunday...when the temps started to get around 98F...I got serious about surviving the heat<95F and less and I don't even get phased>...I put my evaporation vest(from SixSixOne Core-Cooler Evaporation Vest under my Armor...filled up my Camelback...and I was good to go...as I'm posting this I survived it. :rofl

    This all works great when your on the road...and moving...It's sucks when your commuting in stop and go traffic or sitting at lights or in High Death dealing Humidity. Evaporation doesn't work very under these conditions...and I would look into Phase Change Jacket...
    #75
  16. IheartmyNx

    IheartmyNx Ihave2draft

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    Well, I grew up where the humidity in the summer is 98 99%.

    I have a J/R Razor suit and it has zippered slashes I can close/open them. Which at sundown or night as temps cool is a BLESSING!

    So far, I have no complaints. B/c the alternative is what? A trip to the ER?

    And if it is hot when I stop, I sweat a little and when I ride off it's like I stepped into a freezer...


    That and contrasting the meh heat of today with the near pass out times I've taken in air almost as thick as water... I have no problems.


    Even with my perf leather jacket, unzipped under speed and I zip it up once at speed.

    I could say stop being a candy ass... But I won't:lol3
    #76
  17. larry0071

    larry0071 Been here awhile

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    I hate it when I get to work (45 min ride) and remove my non mesh pants on a 80-95 degree day and my work pants (cargo pants or BDU style pants) are soaked with sweat and stuck to me. I'm going to get a pair of Olympia Airglide 3 mesh pants for this. I ride a 08+ KLR and a 03 Strom, both with touring windscreens that allow relatively calm air around the torso/head. The legs from knee down are pretty much exposed to the prevailing winds of the ride.

    I feel the mesh pants in this instance, with full fairing bikes, is really the "hot" ticket :evil

    Around here in Pittsburgh, and after reading the conversations (arguments?) and the links provided... and knowing that upper 90's is not the normal summer temps, I'm assuming that it can be agreed that based upon my style of machines and geographic location with the associated temperatures that mesh would be highly recomended.

    To us, 95-100 degrees is like end of the world, cars breaking down, folks dieing while cutting grass kind of heat.
    #77
  18. Pindon

    Pindon Adventurer

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    I wrap a Shamwow knock off from Walmart around my neck and secure it with a large rubber band.

    The shamwow holds a great deal of water and while riding it cools the blood flowing to my head and lasts for hours. It seems to work for me.

    Best regards,

    the Pindon
    #78
  19. Renegade_Azzy

    Renegade_Azzy Kamen Rider

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    Its not that bad.. Im used to the rare 90's we get (not too far from you in Finleyville). One downside of mesh... when i was riding along in my Joe rocket Alter Ego2 jacket, mesh panels leeft at home, it got chilly come 4:30. That ride home from Greene county was not as fun as the ride out (soreness aside).

    When you pull of the panels from a convertible jacket, you have to figure where to stash them, if you bring them along. I dotn even think I have the rain slip for this thing anymore, which is another factor.
    #79
  20. larry0071

    larry0071 Been here awhile

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    I'm currently torn between the Firstgear HT Air 2011 and the Olympia Airglide 3 2011. Both are $185, they are bringing the Firstgear in for Thursday so I can try it on, i have to commit to the Olympia if they bring it in because they can not send that back. What to do.... What to do!?
    #80