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Roy

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Everything posted by Roy

  1. Whaaa? SK... Do i see a ghost ? I looked at Kazama gear and frankly, i would stick with the Cusco castor rods. If you cant get the Noltec upper arms then i would bust John and UAS in Sydney in the chops and see if he has his upper arms production ready yet. They seemed to be a good lcoally engineered product that are being R&D in the wraith of a car of his. I think i only paid about $350 for my Cusco castor rods
  2. In the grand scheme of things the 330 and 356mm setups are pretty similar in price. And considering you have a big heavy GTR with plenty of grunt i think you are really better served with the 356, especially since there is a range of 17" wheels that will swallow them. Just need to flog off your current wheels to help fund the better 17" wheels.
  3. Did they tune the car or jsut run it on the dyno? Are you simply pointing out the differences in dynos?
  4. Engineering lectures were only fun when you could visualise concepts and apply them to cars Seriously, rather then getting caught up in the physics of it, grab a dedicated text specific to race car aero which simplifies the physics using good empirical data and common practices to get you close quickly. But agree 100% with Cerbera, you need to try and reduce lift at high speed, and then use the basic and obvious stuff on the top side of the car to try and give you a little downforce. By reducing the lift you can get the same amount of downforce without enar the drag that really hurts the cars acceleration over 230km/h. Trying to get downforce using under car aero is going to send you broke
  5. Well i need to believe that Webber is the king of understatement, so reading hsi Friday report i am thinking he has plenty of car under him and looking at a good quali run. P3 today will help paint a better picture. With Vettel's engine drama it looks like luck the past two race weekends has swung Webbers way, hopefully that equates to some momentum and Webber puts it on the front row. No doubt Vettel is a gun qualifier, but i cant believe that Webber sint good enough to pull a lap sooner or later. The dark horse for the weekend will be Massa, Rubens, Massa and Webber for the podium. Not sure of respective positions yet
  6. Grab the 356mm setup and if your 17's dont fir then get some TE37 or something that have better brake clearance
  7. Noltec front upper arms. Cusco castor rods, and from there i would just stick with offset bushes in the rear end. I have used the bushes in the rear for years with no real problems. I want to go adjustable arms in the rear but they are all big dollars
  8. Helps when you have me at the finishing line breaking the beacon with the bottle of water i had in my hand. I cant believe we got away with it time and time again. Suckers! You dont need awd to cheat
  9. But what is a decent box that you can put behind the chevs. The ZF etc 6 spds are not exaclt slick things. I have found the motor i want for my car, but cant find a gearbox
  10. Well Button is going to crash out of this weekend's race, you read i here first. The guy/team cannot continue on their current high.
  11. It is a good start, but there is a difference between flat and smooth. You need smooth and not necassarily flat, ie parallel to the ground.
  12. Way to involved a topic, need pictures and face to face time and trial and error. A high level snapshot, the best palce to start to get an understandign of what you should look for... Since we drive road cars or at least track cars based on road cars we are never going to get the sort of ride heights you need to get real downforce from under car aero. So all we can hope for is to eliminate postive lift. Numbers vary, but its not unusual for at speeds of around 180km/h you can have 40-60kgs of lift. You want to get that to zero or even to the point where you are getting -20kgs lift. So you need to look at airflow. The heat is an issue, but consider how do mid engined cars cool engines? They are predominantly cooling the engine using radiators and coolers for engine oil and coolant, they are not cooling the engine or exhaust. Though you need to keep an eye on that as well for obvious reasons. Good bonnets for radiators and sides of bumpers for oil coolers excel here As for the rest of it, there are plenty of good texts around and its too hard to explain without pictures graphics. But seriously, if you read up and get yor head around Bernuolli equation then you are half way there. Apllied to cars and the topic, basically the Bernoullis equation says that if air moves fast it has less pressure. If air moves slow it has more pressure. The classic example being the blowing air accross the top side of a sheet of paper making it rise. The higher velocity air you are blowing accross the top surface creates a low pressure zone. The pressure on the underside of the paper is higher so the paper is forced upward by the higher pressure. This is obviously the opposite of what we want. So we want air to flow quicker under the car then over the top. The pressure on the upper surface of the car where the flow is moving faster is lower than the pressure on the lower surface, giving you lift like a wing.
  13. Saynno to Apexi cams, i have tried some in my RB20 and i know of a big dollar bild R33 GTR that ran them and it made it cammy and peaky with a big hole in response
  14. Those 6 pot APs were mega light. I was blown away with how light they are...they are lighter then a std caliper
  15. Max has just nvoted them to do exatly that....and you know what, I think it would be great to see it happen. Coupled with the major teams having sister teams using the same chassis, with no testing it means the data can be shared with the sister cars....and same team/engineering costs can be shared accross two teams and sponsors and give us grids of up to 26-28 cars
  16. Baron is on the money. Look under the FIA GT3 cars etc
  17. Are you going to ship the GTR back to Aus for runs at PI? You are a better man then me if you can sell and part with a car you put so much effort into
  18. 944 Challenge or PRC Rally Car.
  19. What model Viper? There are plenty of them for sale, they are so cool and quick...and reliable!
  20. Wont be for sale much longer, tax return will hopefully get me out of jail soon
  21. Well the guy that was meant to pick them up last week has gone missing so another bump
  22. If you are going to the expense of making them, i suggest you revisit the design of the one you have....lol textbooks say that it can be improved pretty easily
  23. Thanks to everyone i caught up with, you all helped make it the fun weekend t was. Great work by those white SAU cars for your reults....and of course Russ for letting me punt his car. Its a good thing 1.55bar for 3 days Snowie and Master Paris, i am guessing the white car was a better back up then old Golgo
  24. He was there, he drove past us when we were leaving the island
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