Tagged: Laguna Superkarts NCK
July 27, 2016 at 10:11 am #69718M&M racing and NCK would like to formally announce the“2107 Corkscrew Spring Nationals at Mazda Raceway Laguna Seca”This special event will be spread over 2 days on March 25 & 26 of 2017.We will have access to the paddock beginning Friday evening the 25th. Paddock camping will be available for both Friday and Saturday nights. Garages will be available.NCK is currently working on a race schedule and class structure along with pricing for this event. NCK wishes to make this a special weekend with a number of special races and classes over the course of the weekend. As in the past this will be a 92 db sound day. We are actively seeking class and event sponsors. If you are interested please contact an NCK board member.Events of this magnitude don’t happen very often, make your plans now to attend what is likely to be the marquee event for western road racing in 2017.August 9, 2016 at 6:20 pm #70257
Will a twin pass the db limitations ?? It would be a shame if the twins dont make it as i know at least 5 drivers that would love to race on the Laguna circuit !August 9, 2016 at 9:15 pm #70262
I sure would like to see some Twins again! The 250’s are getting by for the most part. You probably will need to run Air Boxes though.August 10, 2016 at 10:15 am #70287
Air boxes help a great deal.
Attention should also be paid to your exhaust exit. The sound sensor is at the exiton the right side of turn five. Point exhausts out the left side and down. Bring materials to build “widgets” for deflecting sound and plan ahead.
I was called out on my laydown kart two years ago and adding a simple exhaust deflector at my exhaust exiting the right side pod was enough to pass. I was NOT using an airbox because it doesn’t fit in my bodywork, but I brought it just in case I had to modify things to use it. You would be wise to have airboes mounted to be certain that you’ve done due diligence ahead of time given that you’re traveling a great distance.
We’ve had very little problem with sound at LS, but it always pays to plan ahead.August 10, 2016 at 3:46 pm #70294
You need to be under 92db from about 40 ft away at the exit of turn 5 just after getting back on the gas exiting the corner. The singles are making it with an airbox and the large Viper style silencer mounted across the back of the kart. According to Ian at Viper the bends are as critical as the silencer. My link pipe has a slight bend just inside the wing upright and then a 90 to go across the back of the kart.
I did some initial testing with the 100cc Yamaha stuff at a local sprint track. I used a Radio Shack db meter. I believe and can find out for sure but it was set to fast response “a” scale. NCK also did early track testing at Sonoma and Thunderhill. Those test results have been posted to our facebook page nckroadracing.
As we really have no twins on the west coast NCK is hoping some of the twin owners get together and do some testing in practice to see if 92db is possible. We believe that it is with the right equipment. CR125’s easily make it with a 14 to 17 inch silencer straight out the back and an airbox. With a little ingenuity a 250 twin should be able to comply. They run bike days there all the time at 90 to 92 db and the bikes find a way to make it. In our testing we shot for 90db to have a safety zone. First time we were there Laguna officials were extremely happy with our noise level. We only had one or 2 violations. One of which was a Yamaha guy who did absolutely nothing to try to quiet his kart.
The only things that really don’t have much chance of hitting the 92db are the aircooled 100cc reed motors like a reedjet.
We would love to see some of those blistering fast f125’s show up too.
If anyone needs additional info or wants to discuss it further send me a message and I will try to answer your questions or point you to someone who can.
August 10, 2016 at 3:57 pm #70295
- This reply was modified 3 months, 4 weeks ago by Jim White. Reason: update meter settings
One other idea for testing. A local sprint track with a decent straight. Try to stand about 30ft to the right. Measure at various points and see what you get. We have done that too with both 250 singles and yamahas. Our results were pretty close to actual.August 11, 2016 at 10:23 am #70319
Laguna informed me that the meter was 50 ft from the racing line. So if you can measure from 40ft and get below 92 you should be golden. I was also informed they “sometimes” use a roving meter although in NCK’s case I do not believe they ever have.August 18, 2016 at 12:33 pm #70609
We have a Facebook event page for discussions, questions, announcements, etc. Feel free to go there as well:August 18, 2016 at 12:58 pm #70610
You MAY want to put elastomers between your cooling fins to dampen noise.August 19, 2016 at 5:30 pm #70658
The sound limit is mandatory. Bring more than enough sound reduction equipment and work your way from quiet to just passing, remember you only get one sound failure, a second sound failure ends your day. Airbox, long silencer or two, and 90 degree bends in the connecting pipe and a 90 degree bend on the output of the silencer with the output facing drivers left and down. Experts to consult are Ian Harrison of Viper Racing, UK for Superkarts, and Art Verlinger of RLV for the rest of the karts.August 27, 2016 at 8:24 am #70984
Who’s coming? class for sure are Stockmoto. Superkarts, TaGs, 80cc sprints, Laydowns. 4 Strokes,
Mark Morrison, NCKAugust 27, 2016 at 8:57 am #70985
Are you talking 4 stroke sit ups, 206 I have had some interest in that class.September 14, 2016 at 7:57 am #71674
How would you like to have a race on a temporaary sprint track in the paddock while the roadracing is happening?!September 14, 2016 at 8:25 am #71675
We will add L0206 classes if there is any interest. For that matter we will find a place to run for anybody who wants to attend.October 10, 2016 at 9:13 pm #72778
man I wish I wasn’t 3,000 miles away 🙁
NHKA member, yamaha pipe srNovember 2, 2016 at 10:34 am #73727
What are the TaG rules for IKF?November 3, 2016 at 10:37 am #73754
I believe they are like WKA but I’ll let Roger Miller comment on that. One difference is I don’t think we penalize for using a remote starter as long as all the components are there.
An event schedule is to be released in the next day or so listing groups and classes. There will be a WKA stock Honda class that aligns itself with Skusa rules for the 01 cyl. It will allow any listed WKA pipe. We will have classes for the Briggs animals, Lo206’s as well as the WKA controlled classes. Everyone will have the opportunity to race at least 3 times over the 2 days.November 3, 2016 at 1:06 pm #73766
FYI – David and I have traded some emails about TAG rules. I think I covered what was needed.
ALL class and rules questions – bring it on…. I will assist as needed.November 4, 2016 at 9:28 am #73809
Copied from NCK face book page
Direct link to Laguna schedule
Direct link to class listings
Event home page
http://www.nckroadracing.com/…/2017-corkscrew-spring-nats.h…November 4, 2016 at 10:46 am #73817
I’d like to see a TaG light class added each day to a race group to make it two TaG classes a day, and maybe entice some of the sprint racers with TaGs to race. 400lbs. is not normal weight for them, except for Masters drivers.November 4, 2016 at 1:21 pm #73825
With enough interest we will add classes for anybody interested in attending.November 7, 2016 at 5:56 am #73893November 7, 2016 at 6:21 am #73894
Do all tracks have the noise testing equipment? There will ne a few of us going to Daytona. It would be a big help if we could get the reading.
It might help if all the racers got their results listed. Just like fast lap. loudest sound.
It would really suck to make the trip and not run.
Johnny WestDecember 3, 2016 at 11:48 am #75062
Registration is now open.
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