R1200RS + R1250RS Forum
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Wed Oct 23, 2019 11:35 pm
Zitat von M3M im Beitrag #13 That's why the X-14 isn't recommended by Shoei if you want a quiet helmet. In that case, Shoei points you towards a RF1200 or the GT Air 2. The design of the vent inlets is a challenge. Ideally, they need to provide a smooth surface when the vent is closed, but minimize flow separation and turbulence on both the inboard and outboard surfaces on the inlet when the vent is opened. Aircraft and car/truck design struggles with both the noise and drag issues https://ntrs.nasa.gov/archive/nasa/casi....19930091791.pdf For perspective, I have the entry level HJC modular helmet (CL-max 3??) that I use for MC training classes. It's something that I don't have to worry about, if it needs to sit on the ground between exercises or becomes bucket during a thunderstorm. While a nice looking helmet with a big forehead and chin vent, it's a noticeable drag load compared to my Shoei (X-11 & Mulitec) and Arai helmets. And, yes, it's also a very noisy helmet, but only costs $136. The full-face (i.e., non-modular) variant costs the same and carries a Snell rating. So, safety can be cheap, but comfort will cost you money........
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Zitat von M3M im Beitrag #1 In my experience this does not exist. Filtered ear plugs and a good helmet is my suggestion to you, given your preference.
Regards,
Grumpy Goat RSWasserboxer.com |
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I have a Neotec 2 and if I stand on the pegs and get my head, clear from any influence the RS screen produces, it is quiet even at 80mph doing this (without ear plugs in) a muted wind noise, as if in a car, as soon as I sit down it gets noisy. |
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If you overlay the Pinlock website info with the CE test results for the Howard Leight Laser Lites, you'll see a significant difference.
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Zitat von Mr. 36654 im Beitrag #20 TL:DR Please explain it to me. |
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Zitat von hyperm3 im Beitrag #21Zitat von Mr. 36654 im Beitrag #20 In summary, the Pinlock Ear Plug is a modest performer as an ear plug. However, at $20 to $25 per pair, it's simply marketing magic. At about $6.50 per 5 pair, these reusable Howard Leight Smartfit plugs offer a very similar performance. https://www.amazon.com/SmartFit-Howard-L...72025898&sr=8-6 pin-lock earplugs vs Smartfit - with Grid - post EXL.png - Bild entfernt (keine Rechte)
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Zitat von Mr. 36654 im Beitrag #22 Fair enough. However, in real life testing(not a chart) of almost 20 years of riding, these Pinlock ear plugs are the most comfortable Ive ever used(literally dont feel them at all once they are in). They are also the easiest to clean, and block as much of the noise I need while still being able to hear my Com system and have a conversation. |
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Zitat von hyperm3 im Beitrag #23Zitat von Mr. 36654 im Beitrag #22 And, that's the issue. To deliver an audible signal, the com level has to be 10 or 15dBa above the background. In this case, that background level is the wind noise which will cause long term hearing damage. So, the modest performing ear plugs are only compensating for the higher level of the com system and not really reducing the risk of hearing damage.
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Zitat von Mr. 36654 im Beitrag #24 However, if Im reading that correctly, we have to dive into Hz to figure out which parts we really need to worry about, not just dba. Someone talking at 80dba is different than wind noise at 80dba. See https://soundbridge.io/loudness-level/ |
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Zitat von hyperm3 im Beitrag #25Zitat von Mr. 36654 im Beitrag #24 Personally, I trust 3M Howard Leight to get their sums right... |
Zitat von hyperm3 im Beitrag #25Zitat von Mr. 36654 im Beitrag #24 Above, see the discussion on the frequency range of vowel (200-800Hz) and consonant (upto 5kHz) sounds in human speech. That's why I was intrigued by the dip in PinLock attenuation at 4k Hz, thinking that was their claim to a secret sauce. If that's it, it isn't doing anything significant for audible speech or music. The soundbridge discussion is the inverse of the dBa weighting scale. Raw SPL values at frequencies below 1k HZ are lowered to reflect the bias of human hearing. As we age, loose the high frequency end due to loss of elasticity within the ear. In some ways, analogous to the stiffing of the lens in our eyes which leads to the loss of near vision. Old Forum Orphan |
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I have just ridden a decent distance with my new to me Barkbuster hand guards - these seem to make a big difference to the wind blast. As you would expect, less draught trying to get up my sleeve but also less buffeting around my head. I'll post a new thread with some pictures...once my phone decides to talk to Dropbox and shares the pics. |
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I have a C4 Pro Carbon with the SC1 option coming next week to replace my C3 Pro/Neotec so fingers crossed it will be an improvement if only by a small amount.
ER6N (2012)
S1000R Sport (2014) MT07 (2014) MT09 (2015) SuperDuke 1290R (2017) Z650 (2017) R1250RS Exclusive (2019) |
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