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Messages - Jackal
16
« on: June 14, 2019, 12:18:12 PM »
Hello all,
It's been a while since going back out again. Will see you all at red deer this Saturday, hopefully.
I have chosen to run sound meter that day. To minimize any predicaments come race day, anyone care to give me a quick refresher on how to operate the meter, or anything related to the work assignment?
Thanks in advance.
Hi There, I have assumed the role of Sound Steward for the club, and I'll be happy to give you the breakdown before the event starts. I will set the station up in a location that should reasonably be able to catch the cars at full throttle. Some of the changes that were recently implemented make the setup of the device and the recording of the logs significantly easier. The sound meter has the settings taped to the front of it, so just be sure to reset these settings when the unit self powers down. I use the "High Hold" on the meter to capture the reading, and simply reset that for every car. The log sheet has been revised to make it easier to capture, and has the legend at the top for what to call in. In short, catch a reading, record the reading and call in a warning if the car is between 91dB and 92.9dB, and call in a blow over if its 93dB+. I'm in car number 4, and will be the dude with the big moustache. We can go over the station and its setup together if you like. Thanks Duane
19
« on: June 09, 2019, 08:46:44 PM »
Correct. The use of the "R" is optional on the helmet markings. The key marker will actually be on the chin strap of every helmet. It will be an E in a circle with a number. The number denotes the country the helmet was tested in. All 22.05 helmets are good for ten years from the date of manufacture.
20
« on: May 24, 2019, 12:37:03 PM »
Sold
21
« on: May 13, 2019, 10:52:29 AM »
Hi all. I wanted to thank you all for the opportunity to be the sound steward and follow up with my experiences from the first event. This is a new position for me and I wanted to thank you all for the patience with me as I make my way up the learning curve for this position.
The first event went relatively smooth, and I learned some things along the way thanks to both Tom G. and some help from Tom K. as well. I appreciate the assistance. I will implement a few minor changes that may make things operate a bit smoother for the next event.
Firstly, I'd like to change the forms a little to make it a one page layout for each run group so that there isn't any flipping back and forth through pages while cars run, and include a different clipboard to make working sound in the field a little bit smoother.
Second, I'll assign a different channel for sound on the radios, and communicate only with the second grid worker to avoid clogging up the channel during runs. This also alleviates cone calls on the radio having an affect on the readings.
Third, Placement of the sound trap will need a bit of adjustment, but that will come with a bit more experience (mine), as the season progresses.
Thanks again for the opportunity, and I look forward to getting a bit more smooth with the sound logging as the season moves forward.
23
« on: May 05, 2019, 05:57:23 PM »
I chatted with Adam today and volunteered to be the sound steward. I have the meters and will make sure they get tuned up before the event.
24
« on: April 29, 2019, 10:17:02 AM »
No. I previously had a Lotus Stage 2 exhaust which was terrible. The Larini was relatively quiet in the cabin with no droning on the highway.
I guess it's just me then. My BMW was quiet to begin with, but in the cockpit it was even more so. Over the winter I've become used to the limo where I can't hear anything unless it's WOT (Even then it's really faint). I've been told not to worry about it, and it's just that the engine is 18 inches from my head. I'll borrow the decibel meter this week and run some tests to see where I'm at and panic if I need to after that.
25
« on: April 28, 2019, 08:42:25 PM »
Any chance you have a wood lathe?
26
« on: April 26, 2019, 03:53:53 PM »
I ran the Larini SC Track exhaust on my 2010 Elise SC and it consistently ran below 90 db - usually 85 -88 db
Given that it's all relative to what you've experienced, did it seem excessively loud in the drivers seat?
27
« on: April 26, 2019, 02:31:35 PM »
If you have trouble with meeting sound, I can recommend some muffler replacements that have worked well on the MR2 with the same 2ZZ engine (albeit cammed and with some other goodies, but the recommendations should still be good ones). I cannot comment on what the stock sound level will be for your car, but it is rare that a stock car is over our limit. I just had issues as the original exhaust for the 1ZZ obviously would not work, and the tubular header and exhaust package I put in with the 2ZZ had a poorly selected muffler.
The exhaust I run isn't stock, but came with the car as I got her. The Exhaust is the Larini SC Sport for the supercharged Elise, this included the high flow cat.
28
« on: April 24, 2019, 06:02:37 PM »
I used a SuperTrapp on my S2000 and it killed my cabin drone (and the loud exhaust) beautifully. And I had Cam whip up a quick release clamp so I could remove/install it in a few seconds. Not the cheapest solution, but the most configurable and really is easy to take on/off.
Do you have any shots of what your assembly looks like? I'm looking for creative ideas as my exhaust is inside the car, and doesn't have anything exposed except for the tip. This limits me from using a clamp on pipe without dropping the whole rear pan/diffuser. I'll be borrowing the decibel meter to make a few passes and see if its an essential mod for me or not. Here's a pic of what I have to work with currently.  Untitled by Duane Jacka, on Flickr
29
« on: April 23, 2019, 01:37:05 PM »
Hi All. I've never been in a position where my exhaust may be too loud to run, and I'm looking for proven methods that you may have used to quiet it down a bit. This may be all for nothing as everything in my ride sounds loud and the car has very little in the way of sound deadening. I just don't want to get to an event an hour away and realize that I can't run after the first lap.
In a perfect world I'd like a quick way to quiet it down a few dB, but have it reversible.
My first thought is a sheet of tin rolled into an oval (the shape of my tip) held on with a hose clamp of some sort. The business end would have a metal grill or expanded metal over it, and I was thinking of steel wool to fill the makeshift canister.
Thoughts?
30
« on: March 13, 2019, 12:20:56 PM »
Sent one in large resolution.
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