New Personal Best At track

[sevenleaf]

I had a ton of fun but wow is slicks a new learning curve.. Also the wheels and tires fit perfect BUT the lug nuts did not. I don't think I had the correct ones on the wheels when I got up to speed wow was it wobbly. I had to let off several times but all my times were between 12.0 and 12.1 except my best

Looks like I have to go pick up a set of slicks for myself it's going to take more practice but for my second time ever at the track I'm improving.

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Here is the video of my worst run all night. Someone leaked fluid on my lane as I was staging so we had to wait 40 minutes before we did our burn out. Then the car felt so bad I coasted down the track. We only took one video so this is all I got to see how my burn out and launch was.

http://s246.photobucket.com/albums/gg118/Sevenleaf/?action=view&current=MOV01906.flv

 

[matt texass]

Slicks "sway" at higher speeds

 

[sevenleaf]

Slicks "sway" at higher speeds

I heard that but this felt like a wobble.. It was my first time on slicks so it could just be me, I had to let out from how bad it felt. Atleast I can only improve from here.

 

[matt texass]

ya man good times though only room to improve now

 

[don_w]

The air pressure in the tires can make a big difference in how they feel at the big end. And it is a fine line... as little as 1 psi pressure can change the way they feel. On my old 28x10.50-15s, 11psi would feel like I was driving on Jello... even at 95mph in the 1/8. But 12psi had no sway whatsoever. I've been running my new 28x11.50s at 13-14psi, and they are steady all the way up to 128mph.

Oh yea... congrats on a new best and getting into the 11-sec club!

 

[don_w]

My lugnuts narrow to a point and I believe these tires needed some sort of washer on them.

Whoa!!! I missed this part!

What kind of wheels where you running? If they required shank type lugs, and you were running on standard conical lugs, then you dodged a huge bullet! That's a good way to lose a wheel and find a wall! Not something you want to guess at. The proper lug nut and thread engagement is so important.

 

[psfracer]

Holy crap, you were lucky if you were using an acorn style lug nut on a wheel that needs a shank style lug nut with washers.

Its amazing the wheels did stay on.

 

[stkjock]

congrats on the new numbers!! and glad those borrowed tires worked so well. looks like with a 1.8 60' you got 11.7x-11.8x in your ride.

 

[sevenleaf]

How can I determine the proper lug nut for these wheels? This is what I was using

The wheels were 2001 Cobra wheels with M/T ET Street 26 x 11.5 x 17

Thanks for the comments. I just want to be sure I was using the right or wrong lug nuts so I can just accept the fact thats how they feel and start learning from here.

 

[sevenleaf]

Besides the wobble when you look at the lug nut holes on the wheel you can see wear around the holes. My lug nuts actually went inside the holes. Didn't touch the edge of the wheel hole at all. If my lug nuts were right then why did all 5 holes have what clearly are washer marks or some type of lip on the lugnut around the edge of the hole. I can snap a picture if it's needed.


Here is the video of my worst run all night. Someone leaked fluid on my lane as I was staging so we had to wait 40 minutes before we did our burn out. Then the car felt so bad I coasted down the track. We only took one video so this is all I got to see how my burn out and launch was.

http://s246.photobucket.com/albums/gg118/Sevenleaf/?action=view&current=MOV01906.flv


edit; man watching that video I never noticed the 2 grooves in the road. You can cleary see I wasn't in them. Interesting...

 

[sevenleaf]

Here is the picture of the wheel. Did I use the right or wrong lugnuts?

 

[don_w]

It's hard to tell by that pic. It kind of looks like there may be a conical seat there, but they usually don't have recesses for washers. It's also possible that by putting on the conical seat lugs nuts, you created a small angle in the metal just by brute force.

Any idea what the inside diameter of those holes are? If they are just a tad over 1/2", then they are not shank style. But if they are say closer to 3/4", then they are likely designed for shank nuts. Also, how deep is the hole... i.e., how thick is the metal they pass through?

The other thing to consider is that there are a couple different types of conical nuts... some have a 45* angle, and others have a 60* angle.

 

[sevenleaf]

Ok does this picture help any?

 

[don_w]

That angle is better. They do not look like shank type wheels. The recess that appears to be for a washer is most likely just to provide room for a lug wrench head or socket.

 

[chad05gt]

Nice!

Nice N/A run.... VERY nice! Man.... I gotta get to the track!!

 

[sevenleaf]

Nice N/A run.... VERY nice! Man.... I gotta get to the track!!

thanks but i'm far from NA


It was my second time at the track first time on slicks, my times will start looking better the more I race.

 

[sevenleaf]

Just because I like to update my old threads... I was using the wrong lugnuts for the wheels which is why it felt like the wheel would slip. I ordered new lugnuts from ford and they are totally different from my Razor wheel lugnuts...

Could have been dangerous!

 

[don_w]

Hmmm... I mentioned to you four months ago that they looked like conical seats.

 

[sevenleaf]

Hmmm... I mentioned to you four months ago that they looked like conical seats.

well you were right!

 

[rojizostang]

it looks like both sets of lug nuts have conical seats, however if i'm not mistaken the wheels with the slicks on them don't have conical seats...did i see that right? i think what perhaps looks like a conical seat on the slick wheels is a result of tightening down the wrong lug nuts against the wheel........don't you think?