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Old 15-Aug-2012, 07:25 AM
72s 72s is offline
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How effective are baffles on a 50mm pipe?

Hi, I've been looking for a 916 to purchase for a while and found a couple which happen to have 50mm + termis which are just too loud for me to inflict on my neighbours. I would still love to get one of the bikes but no point if i cant use it without waking up the whole street.

How effective are baffles? I've heard that they can reduce noise by 50% and can be removed for those times that i am away from home.

I'm not keen on drilling into the cans to fit baffles but would rather do that than miss out on a bike I wanted for 18yrs :-)

Thanks
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Old 15-Aug-2012, 08:56 AM
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they do reduce the sound levels, by how much is a depends upon the condition of the end cans and the design of the baffle. A figure of 50% is very hard to define, as a 1dB decrease is barely discernable by the human ear. baffles would normally reduce the sound level output by around 5dB. Seeing as the measurement for a 916 would be at 5000rpm, anthing below this RPM would be quieter too....therefore being realistic, cant you just ride quietley out of your road?
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Old 15-Aug-2012, 09:44 AM
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Old 15-Aug-2012, 10:43 AM
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Hi,

My racebike is 102dB without baffles on a 45/50 crossover to 50mm cans.

With baffles it only dropped to 101dB.

As stated these readings are at 5000rpm, just ride out slowly.

Nellie
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Old 15-Aug-2012, 11:21 AM
72s 72s is offline
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Many thanks for the replies - yep I'd be dribbling out onto the road and away but even on low revs I think I'd be waking up a fair few people with an open can.

I might just go for it anyway but would have been nice to have a way to neuter it when leaving early hours. I'll give a couple of firms who make baffles a call and see if anyone of them have any advice.

thanks

Last edited by 72s : 15-Aug-2012 at 11:31 AM.
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Old 15-Aug-2012, 01:23 PM
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have you got an open clutch cover? IMO having a closed cover would reduce the neighbour noise much more than baffles if you have
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Old 20-Aug-2012, 10:58 AM
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Thanks all - bought it, will see how it goes before getting baffles. Many more newbie questions coming :-)
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Old 20-Aug-2012, 11:15 AM
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If you're really that worried, why not just push the bike up the road before starting? At least you won't be annoying *your* neighbours!


I'd rather die peacefully in my sleep like my Grandfather,
than screaming in terror like his passengers.- Jim Harkins

Ducati 748S | Ducati Hypermotard 1100S | 600-620SS DesmoDue Racebike #111 <-- Sold!! | Avanti Race Parts
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Old 20-Aug-2012, 08:01 PM
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Quote:
Originally Posted by antonye
If you're really that worried, why not just push the bike up the road before starting? At least you won't be annoying *your* neighbours!

Yup that's just what I do if it's before 8 otherwise a quick start and off we go on a warm up lap
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Old 20-Aug-2012, 08:55 PM
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Quote:
Originally Posted by Dukeman358
Yup that's just what I do if it's before 8 otherwise a quick start and off we go on a warm up lap

Or maybe rev the nuts of it every morning and force all the neighbours to move

Cheers
Simon
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