Help....Anyone in the Midlands with a sound check device??

[robm3]

I have the first trackday of the year this Saturday at Mallory Park and think their decibel limit is 98 (or maybe 100) and so to avoid being blackflagged I was wondering if anyone has one of those decibel reading machines?
I've done all my trackdays under a 105 decibel limit and never had a problem but you never know.

I'm near Sutton Coldfield/Aldridge but can travel.
Thanks in advance.
Robin.

[DHGTR]

Hi Rob

Maplins did used to sell a dba meter for about 25 quid, could be a good investment. Make sure you get 'dBa' rather than dBc though.

Dave

[robm3]

DHGTR said:

Hi Rob

Maplins did used to sell a dba meter for about 25 quid, could be a good investment. Make sure you get 'dBa' rather than dBc though.

Dave

Thanks for that Dave, as I have no idea about DBa vs DBc can you take a look at this and see what you think...

http://www.maplin.co.uk/Module.aspx?ModuleNo=22647...

[Steve_D]

robm3 said:

DHGTR said:

Hi Rob

Maplins did used to sell a dba meter for about 25 quid, could be a good investment. Make sure you get 'dBa' rather than dBc though.

Dave

Thanks for that Dave, as I have no idea about DBa vs DBc can you take a look at this and see what you think...

http://www.maplin.co.uk/Module.aspx?ModuleNo=22647...

That one is C only.
You need to go up to the next one which is both A & C.

Steve

[DHGTR]

Steve_D said:

robm3 said:

DHGTR said:

Hi Rob

Maplins did used to sell a dba meter for about 25 quid, could be a good investment. Make sure you get 'dBa' rather than dBc though.

Dave

Thanks for that Dave, as I have no idea about DBa vs DBc can you take a look at this and see what you think...

http://www.maplin.co.uk/Module.aspx?ModuleNo=22647...

That one is C only.
You need to go up to the next one which is both A & C.


Steve

Yep as Steve says you need the other one.

http://www.maplin.co.uk/module.aspx?moduleno=46362

They did used to do a cheaper one but it seems they no longer stock it.

I believe Dbc is a much broader frequency range than dBa. As far as i understand dBa is a similar frequency range to human hearing.

Dave

Edited by DHGTR on Tuesday 7th April 23:40

[robm3]

DHGTR said:

Steve_D said:

robm3 said:

DHGTR said:

Hi Rob

Maplins did used to sell a dba meter for about 25 quid, could be a good investment. Make sure you get 'dBa' rather than dBc though.

Dave

Thanks for that Dave, as I have no idea about DBa vs DBc can you take a look at this and see what you think...

http://www.maplin.co.uk/Module.aspx?ModuleNo=22647...

That one is C only.
You need to go up to the next one which is both A & C.


Steve

Yep as Steve says you need the other one.

http://www.maplin.co.uk/module.aspx?moduleno=46362

They did used to do a cheaper one but it seems they no longer stock it.

I believe Dbc is a much broader frequency range than dBa. As far as i understand dBa is a similar frequency range to human hearing.

Dave

Edited by DHGTR on Tuesday 7th April 23:40

Ah, getting a little pricey now. May have to just chance my arm on Saturday I think.
I'll also be able to get a reading at the track.

[Gulf -LS2]

Hi Robin

Can Am Dave has a noise tester i will ask him if he minds checking your car for you. Both the pipes that go under the rear chassis tube have nearly worn through so they will want patching up or re sleeving. It should be a lot more fun with full throttle and a fully working clutch

[robm3]

Gulf -LS2 said:

Hi Robin

Can Am Dave has a noise tester i will ask him if he minds checking your car for you. Both the pipes that go under the rear chassis tube have nearly worn through so they will want patching up or re sleeving. It should be a lot more fun with full throttle and a fully working clutch

Kyle to the rescue again!!

Reference the pipes worn, they have surface rust too so want to pull them out and replace with something a little nicer...another one for the 'to do' list.

Shocking to hear that it was only giving me 80% full throttle, will need the extra at Mallory this Sat methinks!

[Gulf -LS2]

Ive got a LS7 powered Ultima here and that is 98 db and its a lot quieter than yours, i think you will be close to 105 db. Ive heard they are quite strict at Mallory

[robm3]

Gulf -LS2 said:

Ive got a LS7 powered Ultima here and that is 98 db and its a lot quieter than yours, i think you will be close to 105 db. Ive heard they are quite strict at Mallory

oh no! Had to cancel Silverstone (as you know), lost the insurance cover I paid for. Now if I get black flagged on noise 10 mins in I'll be gutted.
Adjust that throttle cable back to 80% mate!

[Gulf -LS2]

no mate dont push it as bloody hard

[robm3]

Stop the press! it's 101db and the circuit days guys just told me this is kinda 'soft'

Have to find the mics locations and back off each time i go past I guess. Just want to give the GTR a shakedown now it has the new brakes, suspension etc...plus get some decent photos of it in action.

[V8Dom]

robm3 said:

Gulf -LS2 said:

Ive got a LS7 powered Ultima here and that is 98 db and its a lot quieter than yours, i think you will be close to 105 db. Ive heard they are quite strict at Mallory

oh no! Had to cancel Silverstone (as you know), lost the insurance cover I paid for. Now if I get black flagged on noise 10 mins in I'll be gutted.
Adjust that throttle cable back to 80% mate!

no dont adjust it back again, it took ages to get that right(and a bad back)

[Gulf -LS2]

ashleys legs out one door and doms out the other, i had the tough job checking the butterflys were opening fully;)

[Gulf -LS2]

robins car did 103 db at 4k so not bad

thanks Dave

[V8Dom]

Gulf -LS2 said:

ashleys legs out one door and doms out the other, i had the tough job checking the butterflys were opening fully;)

rrrrr but you were playing with the wire mesh and glue.............

Really enjoyed that afternoon, all be it short... Will pop over again some time when you need a helping hand...

Dom