Loud, still very loud

**fi5hy** · 4th December 2012, 07:02

Originally Posted by Shorty_925

This is the sort of commitment needed.Attachment 274123

Is that a rocket up your bum or you just pleased to ride me?

**Yow Ling** · 4th December 2012, 20:23

Honda leading by example

**Shorty_925** · 4th December 2012, 20:49

Originally Posted by fi5hy

Is that a rocket up your bum or you just pleased to ride me?

Not mine but the crasher in this : http://www.youtube.com/watch?v=HdURY...&feature=share

Maybe he's trying to keep it out of the way for another bike flip...

**grantnz** · 9th December 2012, 18:12

Originally Posted by Shorty_925

Not mine but the crasher in this : http://www.youtube.com/watch?v=HdURY...&feature=share

Maybe he's trying to keep it out of the way for another bike flip...

Wait til I see you at Tokoroa Mr. Shorty. Keep looking over your shoulder, cause you won't hear me coming. And that thing does fire rockets. Ran it today along with a similar sized one on the FXR. Large volume certainly seems to work.

**Shorty_925** · 10th December 2012, 16:12

Originally Posted by grantnz

Keep looking over your shoulder, cause you won't hear me coming. And that thing does fire rockets. Ran it today along with a similar sized one on the FXR. Large volume certainly seems to work.

Glad you know your place on the track!

**Henk** · 10th December 2012, 16:15

Originally Posted by Shorty_925

Glad you know your place on the track!

About to lap you?

**Shorty_925** · 10th December 2012, 16:44

Originally Posted by Henk

About to lap you?

only after you have been lapped Sir!

**Skunk** · 15th December 2012, 21:41

Originally Posted by crazy man

l'm shore l sore skunk wright it somewhere but can't find it now . hope he had put some light on it or bert may know

That level was for a previous date. The level at Manfeild is 72 or 75dB but that is measured at set points outside the track by the Council.
We will be running to the MNZ rule of 95dB MAXIMUM at 30m from track centreline. Once you sign that entry from you have agreed to meet this standard (and many other things...). Don't test me to see if I will send you home or not or you will find out why I win the 'Prick of the Week' award at work, every week, for the last SEVEN YEARS.

**jasonu** · 16th December 2012, 04:03

Originally Posted by Skunk

Don't test me to see if I will send you home or not or you will find out why I win the 'Prick of the Week' award at work, every week, for the last SEVEN YEARS.

I thought Trustrum owned that one.

**F5 Dave** · 17th December 2012, 09:08

nah you're thinking Dick of the week.

So this meet will be normal race bike level (which is less than several Mini mufflered buckets I noted this weekend.)

**grantnz** · 17th December 2012, 19:24

This 'ere says you can not exceed the limit. MNZ levels 95 dbl for individual bikes mean diddly squat when the maximum level measured at the boundary by the Council is bugger all.

(5) Motorised Activities and Amplified Music (Special Purpose Zone: Regional Sports Park)
Rule 14.2.8.1 shall not apply to activities involving motorised activities or amplified music within the Special Purpose Zone: Regional Sports Park during the hours of 0900 – 2300 for up to 8 events in any calendar year for a maximum of 6 hours per event (including practices) During these times the noise level as measured within the notional boundary of any occupied residential building within the Plains zone and any occupied site zoned Residential or Deferred Residential shall not exceed the following levels:

If you start your chainsaw, while the Missus is mowing the lawn, after 12pm on a Sunday, and then one off your homekill cows farts, all at the same time, you are screwed.

**Kendog** · 17th December 2012, 19:57

Originally Posted by F5 Dave

nah you're thinking Dick of the week.

So this meet will be normal race bike level (which is less than several Mini mufflered buckets I noted this weekend.)

I did notice a number of fxr's with tiny mufflers in b grade. I am hoping Andrew brings his sound meter for the 2 day and we do some testing.

**Bert** · 17th December 2012, 20:13

I did note a couple of things up at Tokoroa (outside of my own bike being a little loud than I thought).

1. Air cooled Two strokes; just packing the stinger won't deal with all the noise issues (yes it helps); but a number of machines had a lot of fin ringing. What you may ask??.... the air cooled fins can produce a high frequency hum at high revs (something that even goKarts suffer); this is why most air cooled engines (read racing and some road bikes) have rubber bungs pressed in between the fins too dampen the harmonics (for some reason people have removed them)??? put them back...

2. Induction noise. If you don't like the original airbox, build a new one.
No airbox will allow all the induction noise to add to the problem and your likely to loose power due to lack of still air for the Carb; so its silly anyway...

little link to info on sound calculations etc.
http://www.nonoise.org/library/sndba...dbasic.htm#4.3
(I used this a while back for a presentation at work as it is a recognised methodology)

**Rick 52** · 18th December 2012, 16:55

Cheers Burt, I didn't know about the rubber fin thing ..I am going to build a air box ASAP as I get a lot of stand off air fuel mix and I think at Toke with it being so warm and a little higher that Mt Welly it was running rich and some oil could have run down the swing arm to my rear tyre..