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audiomick

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Posts posted by audiomick

    I purchased a Shark Skwal i3;

    in Special place for banter and conversation

    Posted

    2 hours ago, p6x said:

    ... so, 2 decibels difference, not much.

    I beg to differ. Decibels are a relative unit, and logarithmic. That means that 2 dB does mean a significant difference in sound energy. Whoever can be bothered can look here, for instance:

    https://en.wikipedia.org/wiki/Decibel

    https://www.quora.com/How-many-dB-decibels-represent-a-doubling-or-halving-of-the-sound-volume

     

    2 dB difference is a difference that the untrained ear registers as "that is louder". As far as exposure to noise goes, it can be quite relevant, depending on how loud the environment is and how long the exposure is. 97 dB, probably dBA, is quite loud. 99 dB is very loud.

    To get it into perspective, look here. I don't know how reliable the publisher of the site is, but the numbers more or less correspond to that which I have seen elsewhere

    https://www.asha.org/public/hearing/loud-noise-dangers/#dangerous

     

    2 hours ago, p6x said:

    ...Alpine Motosafe earplugs.

    Unfortunately, wearing them attenuates even more the speakers in my helmet

    Any wonder. According to the information on their site, they dampen by 30 dB at 2 kHz. That is really a lot, and 2 kHz is a frequency that is really important for the transmission of information (speech, awareness of the surroundings, whatever...).

    So an ear plug that dampens that much will indeed provide good protection, but will also isolate you from your surroundings.

     

    By the way, this

    Quote

    filters that are tuned to only get rid of the wind noise frequency

    is nothing more than marketing bullshit. I believe I wrote in another thread that wind noise is not a single frequency, but rather very broad band, i.e the entire range of audible frequencies is involved. You simply can't filter out "the wind noise frequency". All you can do is dampen everything. How isolated you feel then depends on the "frequnecy response" of the filters. If they are neutral (flat), you will still feel like you are in touch with the surroundings to an extent.

    The Moto Safe ones are anything but flat. Their figures

    Quote
     
    Frequency Hz 63 125 250 500 1000 2000 4000 8000
    Average noise reduction value dB 18.8 18.4 18.4 16.3 19.0 30.5 21.9 23.4

    show that they dampen significantly more in the high frequencies than in the mids and lows. Particularly the difference between the damping at 500 Hz and 2 kHz is extreme.

    They must sound like shit. B)

    • Like 1
    • Thanks 1

    Small air compressors.

    in Special place for banter and conversation

    Posted

    1 hour ago, activpop said:

    ... those small portable ones

    I've experienced two in that size range. The previous car, an Opel Corsa, had one and a can of "instant repair" instead of a spare tyre, as does the current Opel Astra.

    They are both of a size that one could take them on bike with capacious luggage, but big enough that I wouldn't like to unless I really had to.

    I can say much about longevity, as I have only used them a total of 4 or 5 times. They do work. They are both surprisingly loud, annoyingly so, and slow. Because they are so small, I guess, the pumped volume cannot be very much, so they take a long time to deliver an appreciable amount of air.

    Determining the Sump Oil Level

    in Technical Topics

    Posted

    Thanks for the tip Pete. I wasn't aware that Guzzi had ever made a sensible dipstick. B)

     

    I still might buy one or three from Meinolf, though (no, not him, the other Meinolf...) because his work is really quite pretty, and he's a nice bloke into the bargain. And he also makes them to fit the small blocks, i.e. suitable for my Breva 750 and my V35 Imola. :)

    Incidentally, he (the Meinolf in question) has a V65 track bike modified to a mono-shock rear suspension. It looks a bit "utilitarian", but the longer you look at it, the more stuff you discover that he has modified. Cool bike. :bike:

    Here are a couple of pictures of his dipstick.

    IMG-2747.jpg

    IMG-2752.jpg

    • Like 2
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    Determining the Sump Oil Level

    in Technical Topics

    Posted

    There's a bloke on the German forum that makes pull-out dipsticks for Guzzis. A screw in plug for the filler hole with a dip-stick through the middle secured by a locking pin. Made of metal, and flat in the relevant measuring area.

    I reckon I will get one of those (likely one each for all three Guzzis), and the suggestion to make a mark on it just under the Roper Plate in the case of the V11 is very likely to be used. B)

    Crossing The Alps

    in Travel & dealers

    Posted

    On 10/10/2016 at 3:04 AM, gstallons said:

    Wasn't this the first wind tunnel ?

    As I understand it, the first wind tunnel used by a motorcycle manufacturer. Correct me if I am wrong, anyone who knows better. :huh2:

    5 minutes ago, docc said:

     

    @-Martin.Glaeser- speaks the truth. Again.

    Indeed. You never know when it might be too late. :(

    • Like 1

    I'd just like to say.........

    in Newer models

    Posted

    43 minutes ago, gstallons said:

    OOOOH , you need to Google Robertson screws .. 

     

    Google can be avoided. There are Wiki articles that mention them. B)

    For instance

    https://en.wikipedia.org/wiki/Robertson_screw

    They are uncommon here and in Australia, in fact I don't recall ever having seen one, but the idea sounds good. :)

     

    25 minutes ago, docc said:

     positive engagement, both in and out. :luigi:

    What was that thing with having to leave town? :whistle:

    • Haha 1

    I'd just like to say.........

    in Newer models

    Posted

    12 minutes ago, docc said:

    Then came Torx . . .

    I like Torx.

    10 or 15 years ago they were a bit of a pain in the arse, because one didn't necessarily have the appropriate bit on hand. In the meantime, they have become so common here that the bit is available more or less as a matter of course.

    The adavantage over a Phillips screw is that the driver is less likely to jump out of the screw head if you don't put enough pressure on it to stay in. When using a battery drill to screw in the screws, this is a major advantage. On the stages in theatres here, where set pieces are commonly screwed to the stage floor, and generally where things made of wood are screwed together, you nearly always see Torx here. As I said, I like them.:huh2:

    • Like 1

    Gratuitous Pics of Girls + Guzzi

    in Special place for banter and conversation

    Posted

    On 5/18/2024 at 10:17 PM, KINDOY2 said:

    Screenshot 2024-05-18 at 1.13.36 PM.png

    Nitpicking time (again...). :grin:

    The chin strap on the helmet seems to be not done up, and the helmet seems to be too big for her, i.e. not her helmet, i.e. the photo is staged. Yes, I know they all are, but one can make an effort....

    On top of that, when I sit on a bike, the right hand is on the brake lever, and the left foot is down. Left hand on the clutch and right foot down is only just before riding off, and then the right hand is mostly on the brake lever right up until I start releasing the clutch.

    Still, the bike is on the centre stand, so the photo is obviously really a set-up.

    So why is she pulling in the clutch?

    As I said, one can make an effort when setting up a photo... B)

    Newbie is here!

    in Special place for banter and conversation

    Posted

    On the German market, that would be an absolute bargain. I'd imagine the market in Finnland is fairly similar. I would certainly buy it.

    As far as the spring goes, if it breaks it wont take you all summer to fix it, I gather. Get in a replacement as soon as you get the bike, preferably one of the ones that were developed here, and change it at your leisure.

     

    As I said, if the bike is really as you describe it, I would buy it for sure, and worry about details later. You're not likely to find another one too quickly that is showing such a low mileage (assuming it is genuine...).

    • Like 1
    • Thanks 1

    Breakdown year decoding for 2003

    in Technical Topics

    Posted

    According to several people here, and information I have seen elsewhere, the tenth digit of the number is the year it was built, so that bike was built in 2002.

    The number you quoted in your post is identical to the number on my V11 Le Mans , except for the  last three digits. Yours ends with 195, mine with 456, otherwise all the same.

    My V11 Le Mans was delivered and first registered in Germany in May, 2003.

    • Like 1

    What [music] do you listen to? Share your favs

    in Special place for banter and conversation

    Posted

    10 hours ago, gstallons said:

    ...No other music is required to be "real". 

    Errmmmm, that statement could easily provide the basis for a discussion that could go on all night and need several cases of beer to lubricate it. B)

     

    Without launching into that discussion now, I don't agree. I think most blues musicians wouldn't, either, just to name one example.

    On the contrary, most pop music isn't "real", even if the artists in question think they are making art. Most of it is just product. :huh2:

    • Like 1
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