http://youtu.be/lnydMibNojo (http://youtu.be/lnydMibNojo)
I hope the locking mechanism in the back was load tested. Wouldn't want that think opening if it's dragging.
Quote from: duccarlos on December 15, 2015, 06:29:00 AM
I hope the locking mechanism in the back was load tested. Wouldn't want that think opening if it's dragging.
It's......interesting.
Other than that issue, how would you mount a bluetooth com system? Those typically clamp and the way the helmet is designed, you really couldn't...
I'd be curious what approvals they've gotten...Snell...DOT...whatever.
I like the idea.
Quote from: ducpainter on December 15, 2015, 09:16:40 AM
I'd be curious what approvals they've gotten...Snell...DOT...whatever.
I like the idea.
I read through the comments section. Motorcycle Adventure Dirtrider TV is the only one who has answered any questions. They have mentioned the test procedures being modified to accommodate the lack of chin strap and that it meets SNELL/DOT standards. No real specifics though...
Thanks Chris. I didn't spend the time on the comments as they usually degenerate into people commenting about someone's mother.
Like I say, I kind of like the idea.
Quote from: ducpainter on December 15, 2015, 09:52:37 AM
Thanks Chris. I didn't spend the time on the comments as they usually degenerate into people commenting about someone's mother.
Like I say, I kind of like the idea.
It was actually quite tame. Although the MADtv poster definitely seems like he has a vested interest in the helmet, despite saying otherwise.
In theory, it's a great idea and I would love to see more manufacturers go this route.
Quote from: duccarlos on December 15, 2015, 10:09:03 AM
In theory, it's a great idea and I would love to see more manufacturers go this route.
I think it's a good idea too. But, it's something I would definitely need to try on before I would consider buying.
The person who posted the video later commented that the helmet would be about 700 AUD when released...
Not a horrid price.
Quote from: ducpainter on December 15, 2015, 10:29:49 AM
Not a horrid price.
Especially considering this is the first iteration.
No chin strap = no ECE certification [roll]
Their website state they have the ECE approval ??? which are very clear about chin straps. Must have one and chin cups are not enough. If they add one, it could be left fastened... just loosen a little before removal.
The noise reduction potencial is very interesting.
EDIT:
I don't know if I was too quick, read it wrong, read another document or WTF happened, but:
6.11. The helmet shall be held in place on the wearer's head by means
of a retention system which is secured under the lower jaw. All
parts of the retention system shall be permanently attached to
the system or to the helmet.
The document is quite detailed, 110 pages long and nerd'ly interesting ;)
https://www.unece.org/fileadmin/DAM/trans/main/wp29/wp29regs/r022r4e.pdf (https://www.unece.org/fileadmin/DAM/trans/main/wp29/wp29regs/r022r4e.pdf)
The locking mech was load tested using cables,the shell construction let go first.It cost aud888 which I feel it is a bit pricey,all things considered .All said and done very interesting concept.
Very cool. Seems the way to go.
I recall a helmet manufacturer stating that the conventional chinstrap systems have a pull strength less than what's necessary to pull your head off.
What's the deal regarding that for this lid?
Quote from: Speeddog on December 21, 2015, 11:44:15 AM
I recall a helmet manufacturer stating that the conventional chinstrap systems have a pull strength less than what's necessary to pull your head off.
What's the deal regarding that for this lid?
"less than what's necessary to pull your head off" seems pretty subjective. I imagine that could vary greatly depending on the size and build of the individual.
Quote from: Speeddog on December 21, 2015, 11:44:15 AM
I recall a helmet manufacturer stating that the conventional chinstrap systems have a pull strength less than what's necessary to pull your head off.
What's the deal regarding that for this lid?
The ECE document says
7.10.5. The strap shall withstand a tension of 3 kN without breaking.Most helmet straps can probably take heavier loads. I don't know how that compares to neck strength.
I've edited my previous comment about a mandatory strap, but I still wonder how the Vozz retention system can qualify.
I can't link to the source of what I stated, but I recall it from shortly after Simoncelli's death.
Folks were saying his helmet should have stayed on.
USDOT helmet requirements:
www.nhtsa.gov/staticfiles/nvs/pdf/TP-218-07.pdf (//http://)
Chinstrap test is Section 12.8.
TL;DR summary is the strap must withstand a 136 kilo load for 120 seconds, and must not stretch more than 2.5 cm.
That's 1334 N.
Some Googling unearthed this:
http://www.ncbi.nlm.nih.gov/pubmed/19388771 (http://www.ncbi.nlm.nih.gov/pubmed/19388771)
Citing 12 cadaver tests, mean failure load was 3100+/-645 N.
As that was a summary, description of 'failure' was not available.
http://deathpenalty-trial.jp/wordpress/wp-content/uploads/2011/09/Rabl_kaitousho1_eng.pdf (http://deathpenalty-trial.jp/wordpress/wp-content/uploads/2011/09/Rabl_kaitousho1_eng.pdf)
Cites a value of 12000 N.