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Buell Motorcycle Forum » XBoard » Buell XBoard Archives » Archive through August 05, 2009 » Noise canceling technology for FAN « Previous Next »

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Growl
Posted on Sunday, August 02, 2009 - 03:40 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I was riding in the mountains yesterday, just growling along in low revs - listening to the fan - when a thought occurred...

Having read several articles over the years about using speakers to cancel objectionable noises... by emitting a sound with a mathematically opposite waveform. Why not on our Buells with fans? It's an ideal application... the fan whine is a consistent sound (which NEEDS to be canceled!) The speaker can be turned on simultaneously with the fan... except perhaps the sound cancellation can lag for 2 seconds when one shuts off the bike... that way we check that the fan still works!
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Dennista15
Posted on Sunday, August 02, 2009 - 04:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Sounds like a lot of hassle to me, pun intended, for something as silly as the fan noise. Maybe I don't notice it enough because of the race muffler but still I don't think that it's that obtrusive of a sound. I'd rather hear the fan working then not hear it and fear overheating.
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Court
Posted on Sunday, August 02, 2009 - 04:59 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

>>>>by emitting a sound with a mathematically opposite waveform.

Buell, of course, pioneered that on a motorcycle in 1997.

HVPS

: )
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Alchemy
Posted on Sunday, August 02, 2009 - 08:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

It is a thought. Anything that can make that awful fan noise more tolerable will bring more customers.

I am hoping that the C-kit will be a positive step in the fan noise area even though that is not mentioned as a feature.
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Glitch
Posted on Sunday, August 02, 2009 - 09:26 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

There's a fan?
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Glitch
Posted on Sunday, August 02, 2009 - 09:33 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Longer legged riders, however, complained about interference with the huge, right side mounted air box (air tunnel might be a more appropriate description). Otherwise known as the Helmholtz Volume Power system, the plenum chamber is one reason why the Buell's 1200cc engine performs so much better than a stock Sportster -- our testbike churned out over 80 rear-wheel horsepower.

http://www.motorcycle.com/manufacturer/buell/buell s-monster-13936.html
Awful fancy writing about a bread box! ; )
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Brumbear
Posted on Sunday, August 02, 2009 - 09:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

that would be an open exhaust and a better IPOD
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Wardamneagle
Posted on Sunday, August 02, 2009 - 10:04 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Fan noise never really bothers me. Plus I have a pretty loud exhaust to cancel it out (D&D). Never hear it while I'm on the bike.
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1_mike
Posted on Sunday, August 02, 2009 - 11:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

As has been noted before...
The installation of the right side scoop....has all but eliminated the fan even coming on.. on my XB12R!

Something to think about.

Mike
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Shifty
Posted on Monday, August 03, 2009 - 06:39 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Noise cancellation is only effective in extremely controlled (acoustically speaking) environments. The middle of a motorcycle isn't one of them.
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Hughlysses
Posted on Monday, August 03, 2009 - 07:41 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

IIRC Infinity (Nissan) used this in some of their recent models to cancel road noise inside the car. One of the articles I read said the car was actually QUIETER when it was moving than it was turned off in the parking lot!
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Swordsman
Posted on Monday, August 03, 2009 - 02:25 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I love my fan. One more thing that makes my bike different from all the boring, buzzing jap bikes. It's my jet turbine.

Now the rattling fan bearing I could do without....

Best solution-ride faster. The wind noise will eventually drown it out!

~SM
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Froggy
Posted on Monday, August 03, 2009 - 04:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I swear my Lobster bike's fans are louder than the XB.
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Steelerbike
Posted on Monday, August 03, 2009 - 04:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

try earplugs. I hardly know the fan is running.
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Glitch
Posted on Monday, August 03, 2009 - 04:47 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Oh I get it now, y'all are talking about the After-Cooler!
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Jaimec
Posted on Monday, August 03, 2009 - 04:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Froggy, of course! We get them in STEREO!
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Froggy
Posted on Monday, August 03, 2009 - 05:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Oh that explains it!
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Tankhead
Posted on Monday, August 03, 2009 - 05:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Maybe I just never gave a flying rats ass. But this is the first time I have ever talked about the "joke of a topic" fan>>>>>> ride your f'n bike. The Buell XB is the fan!!!!!! Who the hell cares.... REALLY..... Is it not about the ride? Who cares. Makes me furious to read the posts about the fan. My old City-X never gave me a lick of problems. X-country and everything in between..... Stop it all ready.
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Slaughter
Posted on Monday, August 03, 2009 - 06:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

PM me - I can mail a pair of Hearos(TM) ear plugs - no charge.
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Glitch
Posted on Monday, August 03, 2009 - 06:51 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Ruthless Fan
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Ourdee
Posted on Monday, August 03, 2009 - 07:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Tank, is it raining there?
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Tankhead
Posted on Monday, August 03, 2009 - 11:20 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

No, just going to court tuesday to win custody of my girls from the alcoholic ex-wife....... but other than that I'm just tired of the fan story..... Carry on.
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Geforce
Posted on Tuesday, August 04, 2009 - 12:48 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

When I stop the bike people always ask what the hell is cooling off... I tell them it's the Buell Flux Capacitor...
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Redwhitebuell
Posted on Tuesday, August 04, 2009 - 01:12 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Really, my only problem with the fan is that it breaks. And you have to take the bike to pieces to fix it. And then how do you put it back together?
Wait I get it, that's the fun part!
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Swordsman
Posted on Tuesday, August 04, 2009 - 09:55 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Tangent: Go kick some ass in court, Tank!

~SM
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Bumblebee
Posted on Tuesday, August 04, 2009 - 11:19 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I doubt you could cancel the fan noise with a speaker close to the fan, to many variables.

I wear cheap-o foam earplugs.

There are active noise reducing ear-buds that might work as well.


An example:

http://www.google.com/products/catalog?hl=en&q=noi se+canceling+earphones&cid=11932434619270062313&sa =title#p
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Zatco81
Posted on Tuesday, August 04, 2009 - 11:34 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Seriously? Is your fan making so much noise that you need to wear earplugs? That seems excessive. True my exhaust is loud enough to drown it out but before I changed it I could barely hear my fan run if I heard it at all.
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Hughlysses
Posted on Tuesday, August 04, 2009 - 11:50 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I'm not wearing earplugs because of the fan, but if you don't want to go deaf eventually you'll wear earplugs regardless of the fan or how loud your exhaust is. The wind noise in your helmet at speed is enough to cause permanent hearing loss.

Read more here: http://www.webbikeworld.com/motorcycle-helmets/hel met-noise.htm

(Message edited by Hughlysses on August 04, 2009)
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Arcticktm
Posted on Wednesday, August 05, 2009 - 12:26 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Actually, active noise cancellation would very likely work. It wouldn't make the fan silent, but could greatly reduce what you hear.
The NVH group was playing around with this at Arctic Cat a number of years ago, and it can work on an open vehicle (snowmobile, in this case). Snowmobiles have to pass an SAE drive by noise test in the US.
It was never pursued seriously because of the cost and added complexity.
it's easier to hide these extras in a $50K luxury car than a $10K sled or bike.

Not to antagonize Tankhead any more, but I think the fan just sounds crude, and makes a conversation after shutting off your bike pretty annoying.

Earplugs are smart for anyone riding a lot for extended rides. I knew WAY too many older guys at Arctic that have lost a lot of hearing due to riding/testing loud piped sleds their entire career.

A lot of open pipe H-D owners don't ride very much/long. A lot of us on this board ride a lot, and that puts us at much higher risk. My dad has lost a lot of hearing, and it can really mess up your quality of life. He misses out on a lot of conversations.
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Damnut
Posted on Wednesday, August 05, 2009 - 12:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The more miles you put on your bike the less the fan will come on. My fan hardly ever comes on anymore, I have about 28K on the bike now.
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Steelerbike
Posted on Wednesday, August 05, 2009 - 03:24 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

that's because your fan is broken dude lol
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Swordsman
Posted on Wednesday, August 05, 2009 - 04:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

LOL, yeah, unless it's in the 60's, once my fan comes on, it's on until I park it.

~SM
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