Practice @ Castle Combe... - Page 4

TP · 03-May-2005, 13:42

Quote:

Originally posted by tetol
orange monster tp its got mhp 2 into 1 but its fairly new so the packing should still be good.

Are you Paul Mugridge then? Did you race in the SoT on Sat?

tetol · 03-May-2005, 13:46

yes thats right tp saturday in the sot certainly helped for sunday

antonye · 03-May-2005, 14:32

Don't forget guys - decibels are a logarithmic scale, so a 1dB increase is a 50% increase in noise, so a 2dB increase is a double of the noise.

It takes quite a lot to go from 98dB to 105db!!

TP · 03-May-2005, 14:43

Quote:

Originally posted by tetol
yes thats right tp saturday in the sot certainly helped for sunday

Ahhhh ... the penny drops.

You got some good starts on Saturday - I need to work on those!

Mr_S · 03-May-2005, 14:58

Quote:

Originally posted by antonye
Don't forget guys - decibels are a logarithmic scale, so a 1dB increase is a 50% increase in noise, so a 2dB increase is a double of the noise.

It takes quite a lot to go from 98dB to 105db!!

3dB is a doubling of the sound pressure level

http://www.phys.unsw.edu.au/~jw/dB.html

Oh picky me...

btw, for those that can't get there before the race I may have some scanned track notes, but without the last chicane before Camp

antonye · 03-May-2005, 15:50

Quote:

Originally posted by Mr_S
3dB is a doubling of the sound pressure level

http://www.phys.unsw.edu.au/~jw/dB.html

Oh picky me...

Pedant

Mr_S · 03-May-2005, 16:34

Yes, but here's a little gift to appease the mind

http://www.chathamclose.com/pics/castle%20combe.doc

paynep · 03-May-2005, 18:26

I've booked the last place on the 18th this morning

Emma (?) said that the info pack would be out in a day or so, so hopefully we'll know what the score is.

Oh, and I'm borrowing a friends road-legal CBR400, just in case eyebrows are raised at the DD bike

Rattler · 03-May-2005, 18:38

Quote:

Originally posted by paynep
I've booked the last place on the 18th this morning

Emma (?) said that the info pack would be out in a day or so, so hopefully we'll know what the score is.

Oh, and I'm borrowing a friends road-legal CBR400, just in case eyebrows are raised at the DD bike

I've got my details somewhere, but they're still unclear from taking a race-bike perspective.

If I remember (and I'll check) they state that the bike must be MOT'able - a race bike wouldn't - so is this just to ensure that the noise levels are as per the standard can(s)? Or are they being very strict with this? I'm lucky enough to have a road bike that I can take, but would much rather take the Monnie as practice time is what I'm lacking at the mo' .

Tim

the old man · 03-May-2005, 20:37

Mine also tested at 87db - Leo Vinchi cans like TP. Test was done at 6K rpm with the tester approx 3 feet and 45 degree to the end can.

I sneeked a peek at the guys clip board and all the ones I saw were in the 87 - 91 db range so I would be very surprised if any DD racer had problems with a 105db limit.

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03-May-2005, 13:46	#32
tetol Registered Forum User Mille Posts: 302 Join Date: Jan 2005 Location: kent Mood: ok yes thats right tp saturday in the sot certainly helped for sunday Reply

03-May-2005, 14:32	#33
antonye Administrator Webteam MotoGP God Bikes: 748S, HM1100S, V4SP, Was: DD-A #111 Posts: 13,086 Join Date: Feb 2002 Location: Back in Essex Mood: Passion Killer Don't forget guys - decibels are a logarithmic scale, so a 1dB increase is a 50% increase in noise, so a 2dB increase is a double of the noise. It takes quite a lot to go from 98dB to 105db!! Reply

03-May-2005, 16:34	#37
Mr_S Registered Forum User Big Twin Posts: 1,324 Join Date: Mar 2004 Location: Gosport Yes, but here's a little gift to appease the mind http://www.chathamclose.com/pics/castle%20combe.doc Reply

03-May-2005, 18:26	#38
paynep DSC Club Member Ducati Meccanica Posts: 2,081 Join Date: Jun 2001 Location: Alton Mood: Wet wet wet I've booked the last place on the 18th this morning Emma (?) said that the info pack would be out in a day or so, so hopefully we'll know what the score is. Oh, and I'm borrowing a friends road-legal CBR400, just in case eyebrows are raised at the DD bike Reply

03-May-2005, 20:37	#40
the old man Registered Forum User Mille Posts: 218 Join Date: Jun 2004 Mine also tested at 87db - Leo Vinchi cans like TP. Test was done at 6K rpm with the tester approx 3 feet and 45 degree to the end can. I sneeked a peek at the guys clip board and all the ones I saw were in the 87 - 91 db range so I would be very surprised if any DD racer had problems with a 105db limit. Reply