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Just tested my F 35-7 for decibel

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Old 10-28-2006, 07:19 PM
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Default Just tested my F 35-7 for decibel

Just tested the boat today. Idle around 1000 rpm, I got between 92 and 95 decibels roughly 3 feet away and 3 feet high from the silent thunder platform. Engine are 454-485 HP.

Still Not low enough to run on Lake Georges! Maybe I could be closer to 90 decibel with a idle of 750-800...
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Old 10-28-2006, 10:55 PM
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Default Re: Just tested my F 35-7 for decibel

Do you stilll have the Silent Thunder box under the platform??
Or are you trying to get away without it
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Old 10-28-2006, 11:14 PM
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Default Re: Just tested my F 35-7 for decibel

Jeff , Come down to the Hudson River for a ride . Don,t need mufflers yet. I would like to show you the lower Manhattan area. Or leave the boat home and ride with me and the wife. I to am thinking mufflers for next year. But don't want to lose any ponies from them with the newer boats getting faster with less hp.Can you beleave a 35 Lighting with 525's at 103 . Chit thats fast.
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Old 10-29-2006, 07:44 AM
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Default Re: Just tested my F 35-7 for decibel

Quote:
Originally Posted by mopower
Do you stilll have the Silent Thunder box under the platform??
Or are you trying to get away without it

Silent thunder is on it. I just thought I'd be under 90, because when I compare with other that only has muffler that are under 90, mine sound/feels way more silent then mufflers...

And I still don't see how I could use muffler added to the silent thunder platform ???
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Old 10-29-2006, 07:48 AM
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Default Re: Just tested my F 35-7 for decibel

Quote:
Originally Posted by ReggieRaft
Jeff , Come down to the Hudson River for a ride . Don,t need mufflers yet. I would like to show you the lower Manhattan area. Or leave the boat home and ride with me and the wife. I to am thinking mufflers for next year. But don't want to lose any ponies from them with the newer boats getting faster with less hp.Can you beleave a 35 Lighting with 525's at 103 . Chit thats fast.
I'd be glad to bring my boat there with a guide like you. I keep this in mind for next summer! Thanks for your invitation! I appreciate it.
As far as muffler goes, we are not in a bad position here in quebec generally speaking, but it not too far down the road, like anywhere else!

Anyboby here on that board added muffler on a silent thunder platform ???
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Old 10-29-2006, 09:37 AM
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Default Re: Just tested my F 35-7 for decibel

Quote:
Originally Posted by jeff32
Just tested the boat today. Idle around 1000 rpm, I got between 92 and 95 decibels roughly 3 feet away and 3 feet high from the silent thunder platform. Engine are 454-485 HP.

Still Not low enough to run on Lake Georges! Maybe I could be closer to 90 decibel with a idle of 750-800...

If you have twin engines, does your state allow them to test with only one motor running? In Ohio, I've been told to have the ODNR test only one at a time for better noise compliance......................
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Old 10-29-2006, 04:05 PM
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Default Re: Just tested my F 35-7 for decibel

another good point! But I think they must try to catch us up on 2 engines! More chances to make money giving tickets! But I'll try to find this info!
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Old 10-29-2006, 05:46 PM
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Default Re: Just tested my F 35-7 for decibel

There is NO sound level testing ordinances in Canada, just a muffler law. Your silent thunder unit counts as a muffler, you are perfectly legal in Canada.
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Old 10-29-2006, 07:14 PM
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Default Re: Just tested my F 35-7 for decibel

good to know! I just hope it is 100% true for all province!
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