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-   -   Want launch tips for BFG drag radials (http://www.focusfanatics.com/forum/showthread.php?t=239078)

sporadic 08-29-2010 09:13 AM

Want launch tips for BFG drag radials
 
Just bought a set of 225/50-15 BFG drag radials.
I know ALL drag radials, DOT slicks, and slicks launch differently and prefer a different heat/psi combo.
I've never run a drag radial, only ET Streets and that was a RWD car. (good burnout, low psi, and high RPM launch).

Who has run the BFG DRs and what do they like to hook well?
My car should put down appx 240 wtq if that helps.

Roushturboedzx3 08-29-2010 10:37 AM

I had thos exact same DR and i ran them at 10psi and launched at about 4500 sometimes more depending on the track. do a good burnout with them they need it

sporadic 08-29-2010 11:33 AM

Quote:

Originally Posted by Roushturboedzx3 (Post 3391367)
I had thos exact same DR and i ran them at 10psi and launched at about 4500 sometimes more depending on the track. do a good burnout with them they need it

Thanks that's what I needed to know!
Did you slip the clutch any or side-step it?
What kind of 60' times did you get with them?

Roushturboedzx3 08-29-2010 02:07 PM

Deff slip the clutch a little. You don't want to get it to hot and have it slip. You will have to play with it a little. But slight slip of the clutch

Roushturboedzx3 08-29-2010 02:07 PM

Also try 13psi tire press first

focusmaniaczx3 08-29-2010 04:57 PM

these are the G forces i guess? ive had best results between 10-12 psi. if we are thinking about the same tire then you do not need to smoke the crap out of them. causes grease pits to build up on the surface of the tire and will make them spin over easier than if they were just cold. a brief hazing is what BFG told me they needed when i called. so basically pull into the water box, 2nd gear burnout with the e-brake up. as soon as you start the burnout let the brake out and spin till they start to hook. i side stepped on a 100 shot out of the hole with pretty good results with the 2 step at 4200 and the nitrous coming on at 4600. i think my best 60ft was 1.7 before i got too aggressive and stripped the bolts out of the transmission case instead of breaking the tranny mount bracket so you definitely want to slip the clutch on the way out. dumping like a dummy is a bad idea lol

sporadic 08-29-2010 06:52 PM

Haha yeah I was wondering what would go first with side-stepping. :)
Yes I have the g-force.
1.7 is fantastic on drag radials! I was hoping for a 1.8x at best, running my solid motor mounts and the Exedy stage 2 clutch.
Thank you for the detailed burnout too.
I hadn't even tried a 2nd gear burnout with the Focus... I wasn't sure it had the torque out of boost!
(I would do 3rd gear burnouts in the 'Stang with a 4.56 gear, but that's very different)

focusmaniaczx3 08-29-2010 09:17 PM

side stepping will get the best launch hands down but you risk breaking stuff. my car has always been a little weird with 60ft times. it seems to be faster out of the hole than it should be. i netted a 1.9 on street tires a few times. 18x7.5 heavy ass rims rolling on some bottom of the line corsa something or another street tires. those tires were the best ive ever had. better than kumho or dare i even say pirelli. and they were cheap! if i can find someone locally who sells them those are going back on and probably will be the only tires i run from now on. anyhow back on topic.
side stepping is best if you want the best time but you risk breaking axles, tranny mounts, the bracket the mount bolts to, stripping bolts from the transmission case, and breaking the transmission case itself. the last is only in an extreme case where all the other things have been beefed up.
if you want to play it safe then slip the clutch slightly on takeoff. when you are staged and waiting on the tree go ahead and get into the throttle, if you have 2 step then use it. pull the ebrake and wait. when the first yellow light comes on and they start coming down start easing out the clutch to the point just before you would start to drag the rear tires. on the last yellow release the e-brake and continue to slowly let out the clutch until you are on your way. if you have 2 step you want your foot on the floor from the start. this is the safest way to launch and even though it doesnt net the lowest 60ft it still does damn good. best i could manage was a 1.83 on this method. dont start slipping the clutch too soon or you will overheat it. this method does have its drawbacks. if you over heat the clutch too far the clutch CAN come apart. be careful and happy hunting on those low 60ft times!

chris-13 08-31-2010 07:47 AM

I usually have 20 psi in them and get 2.1 60' times, but I am NA, definately do a good burnout to clean them and heat them up to stick to the pavement
Good Luck

sporadic 08-31-2010 07:54 AM

Quote:

Originally Posted by chris-13 (Post 3393582)
I usually have 20 psi in them and get 2.1 60' times, but I am NA, definately do a good burnout to clean them and heat them up to stick to the pavement
Good Luck

2.1 is not good for drag radials, no offense.
Drop your pressure to at least 15psi and try that.
I've seen your other threads and know your car runs well and you can drive it well too, so I just don't think you've found the sweet spot for your drag radials.

If I can't pull a 1.85 60' after practice then I'll just sell them.


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