In 2016 the Rhne-Alpes rgion was joined with the rgion of Auvergne to form the new administrative entity of Auvergne-Rhne-Alpes. Race tracks have different types of bite. You'll been able to find some info on this site about home brews for tire preps. A typical oval dirt kart tire configuration would use two 9.00 X 6.00 right side, one 6.00 X 6.00 left rear, and one 4.50 X 6.00 left front. 00:00 00:00 Brought to you by Leaf Group Step 1 Protect your eyes and hands with the goggles and chemical resistant gloves. Instead of applying it in one application, you can apply half or a third of the required amount in 2 or 3 separate applications. Sharp edges are what give you bite., Mateer: Factory edges seem to hold up better than grooving iron-edges. They need to get a probe-type pyrometer, rather than an infrared one, and they need to check their tires as soon as they come off the track. Now wrap the tyres in foil and do not remove it until the day of the race. One way to think about it is that the tire isnt working right if its sealed over, so youre actually getting more for your money by taking off a shallow layer of rubber. A second light scuff session followed by storing the tire several days or even a week is recommended, and has proven to be ideal for preparing a tire for competition. Located in a very diverse region rich in assets, not only geographically (relief, climate), but also economic and human, the Lyon-Grenoble Auvergne-Rhne-Alpes is the latest INRAE centre to be created. Wayne Harris, Day Motorsports: First and foremost, if guys are going to mechanically prep their tires, they need to get a pyrometer and record tire readings to see how siping, grinding, or grooving affects tire temperatures. Google tire prep and some of those product names and spend the next 3 -4 days reading threads and you will have several options to think about. one to several coats of #12 Wintergreen with a brush or roller allowing Put your tires back on the rims. If youre on a new set of go-kart tires, you should think about scuffing them. How to Use Pro-Blend Hot Lap: Apply formula directly on the tires with a brush or roller Full coating for the rear tires and and front tires 3 and 2 days before race 4. JavaScript is disabled. Grinding removes that microscopic layer of sealed rubber and mechanically roughs up the smoothed tread blocks to give more bite., Norris: Ten or 15 years ago we might have ground our tires at the start of the night and never touched them again, but now were cleaning and grinding every tire after every heat race and before the features. I have taken part in some that do, but Ive also seen other racers being disqualified after the race, as they were using tire prep formulas that were against the rules. Inside prep is used to break down the rubber so that the slick tread tires will grip the dirt/clay track surface. The drying process can take around 24 48 hours so its best to leave it at least 48 hours to dry. Freshly coated tires that come into contact with a wet environment could render the tire prep ineffective and also prolong the drying process. Good driver .new tires.we are fast. Item Number: #5-GP-QT. We appreciate your continued support of DynoCams. However, it still works very well if you follow the recommended instructions from the manufacturer. Norris: Theres a reason all the [professional dirt late model] guys cover their tires between races. Its best to tire prep on a go-kart stand in your garage or any other indoor location, as youll need to let them dry naturally and they also shouldnt get wet. If youre planning to use tire prep formula on off-road go-karts for dirt surfaces, you have to take into account that it will not be as effective as when used on asphalt. To get everything possible out of a new tire, put it through a couple heat-cool cycles before you really race it. Both are used instead of ATF to help preps like xylene sit on the tire longer before evaporation. Keep using this stuff on the old set till I get my new set then switch to something else?? After youve scuffed your tires, ensure that there is no rubber residue left on the surface of the go-kart tires. Once your go-kart is on the stand, ensure that youre able to move all fours go-kart tires. 270-703-2772 6pm-9pm Central Well he has started and I just fund his hobby. On the rears, I sipe straight across the blocks. Apart from actively growing local karting communities, I run GoKartGuide and write comprehensive articles, guides & reviews about go-kart racing. It may not display this or other websites correctly. tire enough to cause feathering on a hard track. Cover your tires in a second coat and let them air dry again. The Fora platform includes forum software by XenForo. I think that when youre under power youre actually running on those edges as much as the centers of the blocks, so I want those edges as sharp as possible to give me all the bite they can., Hampshire: You can hurt yourself with grooving if dont know what youre doing. The first thing you will notice is that the outer tire requires more tire prep formula than the inner tire. That outer grooving seems to help the tire fire faster when were really hammering the corners and the tires are rolling over a lot., Norris: Study your tires after a race. 32 years of service to the karting industry ~ 1Cor 9:24. The list of best things to do in Auvergne-Rhne-Alpes includes sightseeing, pretty towns, history, and natural wonders! New tires usually have less grip as they are smoother and have less traction. Close this window and log in. There are situations on a really slick track where it seems like the edges of the tooled grooves peel over. May 14, 2014 #3 ; Xylene & Toluene: Think soft dry . You can move the tires by grabbing on to the wheel or the axle, so ensure that those areas are easily accessible and arent blocked. They will lead you in the right direction and already know the effects of each prep they use. // --> . You dont need to move your tires, as they will automatically spin when the belt sander is running. If you're using a homemade tire prep or are unsure, you can continue reading for a general guideline. You should apply 4 ounces on the outer tire and 3 ounces on the inner tire. Soak the tires in water first. This will give you the right amount of traction on the race track. agree with the post above todays prep is condition specific. Already a Member? The most common scuffing tool is a handheld belt sander. Always mix chemicals in well-ventilated areas. barluc99 Member. by hotrod Wed Oct 25, 2006 6:30 pm, Post for dirt i would use wintergreen on tires it cleans them and softens them. If you retain any of your tire softening mixture, be sure to label it appropriately. If you are using worn tires for your race, you may require less, as they already have good traction on the track. just before you go on the track. I believe theres a psychological aspect to tire prep. New to the karting scene trying to get my son competitive.. Youre going to spend the same amount if not more on chemicals to make the stuff than you would buying a proven prep line. For a better experience, please enable JavaScript in your browser before proceeding. For that reason I recommend that you place your go-kart on a stand. Tire prep is up there with shock technology, when it comes to getting cars to really hook up and handle.. You can pick whatever is most comfortable for you. Deep and frequent sipes allow tire treads to flex, build heat and fire more quickly on heavy tracks, but can lead to overheating and chunking on dry-slick tracks. It is an ingredient is some paint strippers. goggles. New Engineer jobs added daily. Stay tuned next month where we continue to cover the basics of tire preparation. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework. Good Luck. on a hard track, Acrysol is the answer. Racehead..We race karts here in the Southeast United States and have to soften tires sometime. Lets jump right in! Jun 17, 2015 #1 Got a question for you guys. This is a deep penetrating prep with a strong Thor Oil and Tire The goal is to get the tread temperature uniform across the width of each tread. Login. Youve got to be careful using real aggressive stones so you dont tear up the edges of any sipes youve put in the tread, because that can lead to chunking., Harris: Lets say youre running an American Racer G60 on a really dry-slick track. Come with us today and find out how we prep our race car tires. Wrapping the tires in saran wrap might help. If you want to apply all of the tire prep coatings in one go or split the application into multiple thinner ones is completely up to you. Scuffing your kart tires means that you are taking a rough material and are scraping it against your tires to create small scuff marks on them. Youre probably overworking the rubber, changing it chemically, and actually sealing it over. The guy I bought my son's kart from gave us tire prep that he used. by -MARK- Mon Oct 23, 2006 2:33 pm, Post durometer considerably. Vintage/Classic/Historical Engine Tech, 3V Performance Engine & Valve train Development, Race Cars & Parts - For Sale or Wanted, http://www.kartingtechinfo.com/tech/prep.htm, http://www.geckermotorsports.com/CarDirt.htm. Thank you for helping keep Eng-Tips Forums free from inappropriate posts.The Eng-Tips staff will check this out and take appropriate action. For a medium bite track, you should apply 3 ounces on the outer tire and 2 ounces on the inner tire. Grinding removes that smooth layer and gets you back to good rubber., Mateer: To a degree, even brand-new tires have a sealed surface. High flash mineral spirits or charcoal lighter is a good tire conditioner, as well as WD-40. That's all this set of tires has had on them since new. So I figured I should keep using the same stuff. Understanding this is vital, as it will determine how many layers of a tire prep formula you need and how much you are required to apply. In a fewinstallments we are going to layout a basic guide for dirt track tire preparation. As previously explained, the lower the bite of a track, the more tire prep formula you should apply. Can be applied Sometimes you can actually see a change in the color of the tread [compared to the rest of the tire]. if(MSFPhover) { MSFPnav11n=MSFPpreload("_derived/lube-autoracingoil.htm_cmp_needforspeed010_hbtn.gif"); MSFPnav11h=MSFPpreload("_derived/lube-autoracingoil.htm_cmp_needforspeed010_hbtn_a.gif"); } In the Lyon and Grenoble metropolitan areas, and the Haute-Savoie department, INRAE units contribute to research activities at the Lyon-Saint-Etienne, Grenoble-Alpes, and Savoie Mont Blanc . Join your peers on the Internet's largest technical engineering professional community.It's easy to join and it's free. I never leave my tires outside, exposed to sunlight. Speedway Illustrated sampled a range of dirt racing experts for their opinions about what works and doesnt work when it comes to mechanical tire preparation of dirt track tires. treatments. In my opinion, like the advertisement says, get'em hot, and the resin will flow to the surface. by CoMaxRacing Tue Oct 24, 2006 10:45 am, Post They will usually indicate how much to formula to apply and how the formula should be applied. Later that night, once the track hardens up, youll want less siping because that would let the [tread] move around too much, build too much heat, and maybe blister. Digatron Gauges and Copyright 1998-2023 engineering.com, Inc. All rights reserved.Unauthorized reproduction or linking forbidden without expressed written permission. treatments. During the process, youll need to access all four tires easily and ensure that none of the tires have contact with the ground. You can use a dedicated go-kart stand or simply any other stand that doesnt make contact with your tires. Re-measure it, find out what its stagger is, set your car up properly, and youll get your best performance without grinding., Johnson: On a new tire Ill use an aggressive grit running at a slow speed. Make your selection in the pick box at the bottom of Either of them will be able to refer you to the regulatory guidelines. The bite of a track basically means how much traction your wheels get. Find a prep line and learn. review our disclaimer. You can make your own tire softener at home by combining a number of ingredients. After cleaning your rubber tire with SG you need to add the oils back . Either way, I'd give it several hours to soak in (so obviously do this before 6 o'clock Sunday night). Please let us know here why this post is inappropriate. After warming up, if not better, sell'em at the swap-meet. I prefer to use a brush, as it ensures that I can evenly coat the tire surface and it also doesnt get messy. If that tire is smoking, its too hot. Post Once the bite comes up, wash your tires and switch to regular tire traction because suntan tends to be too tacky. Maybe shouldn't share with a competitor (I run at pro kart, too), but mix 1/3 acetone, 1/3 mineral spirits, and 1/3 transmission fluid. I've not used any myself to be able to speak to how well they worked. Come with us today and find out how we prep our race car tires. Therefore, you should keep your go-kart on the stand and store it indoors in a dry environment. The Massif Central extends into Ardche and is separated by a series of valleys . Mechanical preparation of tire treads is an inexact science because of the variable nature of dirt tracks. Step 2 Mix equal amounts of the acetone, transmission fluid and mineral spirits in the container. On that type of track we really don't need to soften much, adding grip to the tire is what we are after most of the time. When it comes to applying the tire compound, you have a choice between three different methods. Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a parts function at the center of their design considerations. The guy I bought my son's kart from gave us tire prep that he used. Thats why we sipe across the tread blocks on the rear tires, and around the circumference of the front tires., Harris: Siping doesnt change the tires durometer reading, but it helps make a medium-compound tire heat up and act like a soft-compound tire.
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