Tampilkan postingan dengan label bicycle helmets types. Tampilkan semua postingan
Tampilkan postingan dengan label bicycle helmets types. Tampilkan semua postingan

Rabu, 07 Mei 2014

Can skateboard helmets be used for inline skate helmets?




Scrumdiliu


I know that there is a difference between bicycle helmets, skating helmets, skateboard helmets, and snowboarding helmets but I was wondering if skateboard helmets and skate helmets could be used as the same?

I am a new skater and I think it would be idea if I get skate pads, etc.

Also do you recommend a brand? I was looking at Walmart and they seemed pretty safe.



Answer
There are two types of helmets: Bicycle and Multisport.
The names don't really describe the differences but are based on history of their development.

Bicycle helmets are lighter and usually have more air vents to keep you cool. They are usually more aerodynamically shaped. They are designed for the types of accident you get while moving forward and are good for rec/fitness/race skating.

Multisport helmets are designed for protection when there is more risk of hitting the back of your head such as skateboarding or doing tricks on skates or bikes.
They tend to be hotter because of lack of vents. They are tend to have a round shape and cover the back and sides of the head. The lining is made to protect if you hit another object on the way down (like a rail for grinding).

All helmets are only designed for one hard hit. They may not appear to be damaged but they may not protect well against a second hit.

For your skates, get the helmet appropriate for the type of skating you will be doing.

This goes for your pads also. The pads for aggressive and freestyle skating are thicker and cover more area than for rec/fitness/race skating.

For rec/fitness/racing skating, wrist guards are really important. You will almost always slide on your hands. However, I wear aggressive glove style wrist guards because they cover more skin in order to keep it intact.
Knee pads are more optional for "straight ahead" skating. When (not if) you fall, you should be sliding instead of falling straight down. The pads keep the skin from being scraped up. I have found that the scrapes are just below the knee and not just in the area that the pads cover. However, scrapes there heal faster and are not as painful while healing than ones on your hand. Tegaderm is a wonderful way to cover this kind of scrape. It keeps it moist so that you don't have the pain that happens when dry scabs crack and peal. It also is waterproof, can stay on for a week, and can cover large areas.
I have yet to know anyone who has significantly scraped up an elbow in straight ahead skating.

Bicycle Helmet / Sunglasses problem?




rewald


I ride a road bike, and wear a Giro Eclipse helmet. I've tried several sunglasses, but the helmet seems to crunch my sunglasses down onto my nose. Anybody else experience this problem? Any ideas on a good solution? I wonder if a skateboard helmet would be better or worse?? I also wonder if any bicycle helmets come with a built-in sun shield, thus making sunglasses unnecessary. Thanks!!


Answer
The helmet may be "crunching" your sunglasses down on your nose because the lateral (around your head) adjustment is too loose. A general rule of thumb is to unfasten the chin strap and bend over. If the helmet falls off, the lateral adjustment should be tightened. I have also heard people complain that certain wraparound styles of sunglasses do not work with certain helmets. You may want to look at some cycling specific sunglasses (take your helmet with you when you go to purchase).

There are MTB helmets with visors, but they do not provide eye protection and probably won't give you the glare reduction your'e looking for. I've never seen a eye-shield type device on a cycling helmet and suspect that the aerodynamic effect might not be good.




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Jumat, 21 Maret 2014

Choose only one of the following helmet types to research:?

Q. Choose only one of the following helmet types to research:
⢠bicycle
⢠space suit
⢠motorcycle
Report on your work in a well-organized and well-written
report. Your report must include relevant sample calculations
and examples; a thorough discussion of the principles of physics
described in this unit; and appropriate diagrams and notations to
demonstrate your understanding of the relationship between the
design of the helmet and its use.
Thanks in advance!


Answer
go for motorcycle helmets as there is lots of info on how they are made & testing +the bs , ce , snell. eu, standards & lots of others,

How do bicycle helmets work?




Forgetful


There is a "shell" and a "liner" in a bicycle helmet, right? what is the purpose of those things? Is the shell supposed to stop it from breaking or is the liner supposed to be crushed?
Simple language please.
thanks!!!!!



Answer
There are variations depending upon the quality of the helmet and the purpose... for example, some DH helmets are practically MX helmets now but, in general...

Bike helmets have the liner and shell as you've mentioned, the liner actually does the majority of work in saving you from a fall. The shell is really just there to prevent things like stick and such on the tral from penetrating the liner and stabbing you in the head, or to keep the liner from coming apart on hard impacts. The liner is what handles the energy transfer that prevents you from sustaining severe injury. When you take an impact, the liner is supposed to get crushed... in doing so, it converts the kinetic energy (the energy of an object in motion) of the impact into thermal energy (heat) as the liner is crushed. Remember, energy can never be created or destroyed, it can only change forms... The type of material used in the liner and the overall quality of the helmet determine just how effective it is but that's the basic principle in ALL helmets actually. Most common helmets use an EPS liner, Expanded PolyStyrine, and are good for just one serious impact... Once the liner has been crushed, it no longer has the capacity to be crushed much further to allow for the conversion of energy needed to protect your head. Some other helmets use materials that allow the energy conversion to take place repeatedly and only need to be replaced if the shell material is compromised... these are typically MX helmets or very high-end downhill helmets.

Also, it's worth noting that essentially all bike helmets pass the same certifications so there isnt a whole lot of difference in protection between a $40 helmet and a $140 helmet... Most of the extra money that you pay goes into what was spent on R&D to figure out a way to incorporate more vents into the helmet without lessening the protection offered.




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Sabtu, 01 Februari 2014

Bicycle Helmet / Sunglasses problem?




rewald


I ride a road bike, and wear a Giro Eclipse helmet. I've tried several sunglasses, but the helmet seems to crunch my sunglasses down onto my nose. Anybody else experience this problem? Any ideas on a good solution? I wonder if a skateboard helmet would be better or worse?? I also wonder if any bicycle helmets come with a built-in sun shield, thus making sunglasses unnecessary. Thanks!!


Answer
The helmet may be "crunching" your sunglasses down on your nose because the lateral (around your head) adjustment is too loose. A general rule of thumb is to unfasten the chin strap and bend over. If the helmet falls off, the lateral adjustment should be tightened. I have also heard people complain that certain wraparound styles of sunglasses do not work with certain helmets. You may want to look at some cycling specific sunglasses (take your helmet with you when you go to purchase).

There are MTB helmets with visors, but they do not provide eye protection and probably won't give you the glare reduction your'e looking for. I've never seen a eye-shield type device on a cycling helmet and suspect that the aerodynamic effect might not be good.

In California, what is the penalty for getting a citation for not wearing a bicycle helmet when I'm 16?




Anonymous


today me and my friend pulled over by a cop because we weren't wearing our bike helmets, and he gave us both citations. he said that we would get a letter in the mail from the court telling us what we would do, and for us to show the ticket to our parents. what happens? what is the penalty? what is the court going to make me do?


Answer
To answer your question:
Youth Bicycle Helmets: Minors
California Vehicle Code 21212. (a) A person under 18 years of age shall not operate a bicycle, a nonmotorized scooter, or a skateboard, nor shall they wear in-line or roller skates, nor ride upon a bicycle, a nonmotorized scooter, or a skateboard as a passenger, upon a street, bikeway, as defined in Section 890.4 of the Streets and Highways Code, or any other public bicycle path or trail unless that person is wearing a properly fitted and fastened bicycle helmet that meets the standards of either the American Society for Testing and Materials (ASTM) or the United States Consumer Product Safety Commission (CPSC), or standards subsequently established by those entities. This requirement also applies to a person who rides upon a bicycle while in a restraining seat that is attached to the bicycle or in a trailer towed by the bicycle.
(b) Any helmet sold or offered for sale for use by operators and passengers of bicycles, nonmotorized scooters, skateboards, or in-line or roller skates shall be conspicuously labeled in accordance with the standard described in subdivision (a) which shall constitute the manufacturer's certification that the helmet conforms to the applicable safety standards.

(c) No person shall sell, or offer for sale, for use by an operator or passenger of a bicycle, nonmotorized scooter, skateboard, or in-line or roller skates any safety helmet which is not of a type meeting requirements established by this section.

(d) Any charge under this subdivision shall be dismissed when the person charged alleges in court, under oath, that the charge against the person is the first charge against that person under this subdivision, unless it is otherwise established in court that the charge is not the first charge against the person.

(e) Except as provided in subdivision (d), a violation of this section is an infraction punishable by a fine of not more than twenty-five dollars ($25).

The parent or legal guardian having control or custody of an unemancipated minor whose conduct violates this section shall be jointly and severally liable with the minor for the amount of the fine imposed pursuant to this subdivision.

(f) Notwithstanding Section 1463 of the Penal Code or any other provision of law, the fines collected for a violation of this section shall be allocated as follows:

(1) Seventy-two and one-half percent of the amount collected shall be deposited in a special account of the county health department, to be used for bicycle, nonmotorized scooter, skateboard, and in-line and roller skate safety education and for assisting low-income families in obtaining approved bicycle helmets for children under the age of 18 years, either on a loan or purchase basis. The county may contract for the implementation of this program, which, to the extent practicable, shall be operated in conjunction with the child passenger restraint program pursuant to Section 27360.

(2) Two and one-half percent of the amount collected shall be deposited in the county treasury to be used by the county to administer the program described in paragraph (1).

(3) If the violation occurred within a city, 25 percent of the amount collected shall be transferred to and deposited in the treasury of that city. If the violation occurred in an unincorporated area, this 25 percent shall be deposited and used pursuant to paragraph (1).

Added Ch. 1000, Stats. 1993. Effective January 1, 1994.
Amended Sec. 6, Ch. 674, Stats. 1996. Effective January 1, 1997.
Amended Sec. 1, Ch. 475, Stats. 2002. Effective January 1, 2003.

http://www.dmv.ca.gov/pubs/vctop/d11/vc21212.htm

some further info...for future reference:

Bicycle deaths by helmet use, 1994-2005

No helmet Helmet Total*
Year Num % Num % Num
1994 776 97 19 2 796
1995 783 95 34 4 828
1996 731 96 27 4 761
1997 785 97 23 3 811
1998 741 98 16 2 757
1999 698 93 42 6 750
2000 622 90 50 7 689
2001 616 84 60 8 729
2002 589 89 54 8 663
2003 527 85 57 9 619
2004 602 83 87 12 722
2005 673 86 76 10 782




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Sabtu, 20 Juli 2013

How do I bicycle 20m to work (efficiently) and stay work-friendly?

bicycle helmets types on Alpinestars RJ-5 Jacket - Tobefast
bicycle helmets types image



Eric


I live in Clearwater, FL and want to bike 20 miles to Tampa, FL, to work and back. I need to carry a backpack (with a laptop) and nothing else.

1. What sort of setup (bicycle type, features, helmet, etc) would make my trip most-efficient?

2. What should I bring and how should I dress to stay work-friendly? I normally wear dress pants (no jeans) and a short-sleeved collar shirt or dress shirt.
Thanks, Old Hippie! That all makes perfect sense. As an edit, when I said, "I need to carry a backpack... and nothing else," I meant (to actually do my work) I only need my backpack/laptop.

Also I don't know of any bicycle stations. Tampa Bay isn't the most bicycle-friendly city for commuting. To combat that, I have a secure place to keep it at my office.



Answer
You'll need more than a back pack. You'll need a bike with a rear rack, panniers (saddle bags) and fenders. You'll need to temporarily stash your work clothes in those panniers & wear cycling specific clothing that will "wick away" sweat - perspiration.
http://www.aerotechdesigns.com/

You may also want to take along a small towel to dry off, antiperspirant & cologne. Change clothes when you get to work. The bike should look something like this...
http://i382.photobucket.com/albums/oo267/OldHippie_01/2012%20Giant%20Defy%205/100_0336.jpg

You'll need a good, well ventilated helmet, like this...
http://www.giro.com/us_en/products/men/helmets/rift.html
And a helmet mirror...
http://www.safezonemirror.com/index.html

Take classes in cycling safety from these people...
https://cyclingsavvy.org/contact-us/southeast-region-contact-form/

See if Tampa has a "bicycle station" such as we have in St. Louis, complete with a safe place to lock up the bike, showers, lockers & a bike shop right next door.
http://trailnet.org/downtown-bicycle-station

What is the California state law on riding bikes with helmets?




thename's


In California, is it required by law to wear a helmet while riding within neighborhood zones only?
where can I find an online source that has more information on this?



Answer
Hey Thename,

Anyone under the age of 18 years of age has to wear a helmet while riding any bicycle, scooter, skates or skateboard on any PUBLIC roadway, highway, bicycle path or street. The key word is Public. If your neighborhood is located on a private roadway then the law does not apply on private land. Here is the California Vehicle Code section:

21212. (a) A person under 18 years of age shall not operate a bicycle, a nonmotorized scooter, or a skateboard, nor shall they wear in-line or roller skates, nor ride upon a bicycle, a nonmotorized scooter, or a skateboard as a passenger, upon a street, bikeway, as defined in Section 890.4 of the Streets and Highways Code, or any other public bicycle path or trail unless that person is wearing a properly fitted and fastened bicycle helmet that meets the standards of either the American Society for Testing and Materials (ASTM) or the United States Consumer Product Safety Commission (CPSC), or standards subsequently established by those entities. This requirement also applies to a person who rides upon a bicycle while in a restraining seat that is attached to the bicycle or in a trailer towed by the bicycle.

(b) Any helmet sold or offered for sale for use by operators and passengers of bicycles, nonmotorized scooters, skateboards, or in-line or roller skates shall be conspicuously labeled in accordance with the standard described in subdivision (a) which shall constitute the manufacturer's certification that the helmet conforms to the applicable safety standards.

(c) No person shall sell, or offer for sale, for use by an operator or passenger of a bicycle, nonmotorized scooter, skateboard, or in-line or roller skates any safety helmet which is not of a type meeting requirements established by this section.

(d) Any charge under this subdivision shall be dismissed when the person charged alleges in court, under oath, that the charge against the person is the first charge against that person under this subdivision, unless it is otherwise established in court that the charge is not the first charge against the person.

(e) Except as provided in subdivision (d), a violation of this section is an infraction punishable by a fine of not more than twenty-five dollars ($25).

The parent or legal guardian having control or custody of an unemancipated minor whose conduct violates this section shall be jointly and severally liable with the minor for the amount of the fine imposed pursuant to this subdivision.

(f) Notwithstanding Section 1463 of the Penal Code or any other provision of law, the fines collected for a violation of this section shall be allocated as follows:

(1) Seventy-two and one-half percent of the amount collected shall be deposited in a special account of the county health department, to be used for bicycle, nonmotorized scooter, skateboard, and in-line and roller skate safety education and for assisting low-income families in obtaining approved bicycle helmets for children under the age of 18 years, either on a loan or purchase basis. The county may contract for the implementation of this program, which, to the extent practicable, shall be operated in conjunction with the child passenger restraint program pursuant to Section 27360.

(2) Two and one-half percent of the amount collected shall be deposited in the county treasury to be used by the county to administer the program described in paragraph (1).

(3) If the violation occurred within a city, 25 percent of the amount collected shall be transferred to and deposited in the treasury of that city. If the violation occurred in an unincorporated area, this 25 percent shall be deposited and used pursuant to paragraph (1).

Added Ch. 1000, Stats. 1993. Effective January 1, 1994.
Amended Sec. 6, Ch. 674, Stats. 1996. Effective January 1, 1997.
Amended Sec. 1, Ch. 475, Stats. 2002. Effective January 1, 2003.

Kimber




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