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-   -   ET with and without wheelie. (https://classracer.com/classforum/showthread.php?t=88343)

KennyAnderson 10-08-2024 05:18 PM

Re: ET with and without wheelie.
 
Quote:

Originally Posted by Ed Carpenter (Post 703866)
With my Chevy II if we tied it down it would lose .10 loosing it back up to do huge wheelstands it would pick that .10 right back up. Just my experience.

This is preposterous!!!! Didn't you read what 1320 said!?!?!?:D:D:D:D:D

1320racer 10-08-2024 07:06 PM

Re: ET with and without wheelie.
 
As usual you add nothing of relevance to a thread, you’re a clown!

Now what is preposterous is some here believe that a car can break the 60 foot beams just as quick with the back tires as it can with the front tires!

Frank Castros 10-08-2024 07:36 PM

Re: ET with and without wheelie.
 
Quote:

Originally Posted by 1320racer (Post 703865)
Frank, it depends on any given race day/weekend as to what I want it to be as we adjust the front shocks based on DA and continue to do so throughout the day and night as the DA rises and falls so the wheelie and 60 foots remain consistent. This past weekend they were low 1.26 over 3 days. That said, the best ever has been 1.17

Obviously 1.26 and 1.17 is a huge difference within sixty feet. Why and what track was the 1.17?

1320racer 10-08-2024 07:38 PM

Re: ET with and without wheelie.
 
No wheelie and Atco

nickh 10-08-2024 07:44 PM

Re: ET with and without wheelie.
 
Back in 2005 we ran TS with Jerry Haas built car. We experimented with wheelie bar settings. We found that the car liked 5" height for wheelie bars, our car was pretty consistent tripping 60' clocks at 1.02 with back tires. We went to 4" on bars the car slowed to 1.04, we went to 6" on bars and car hit the bars too hard and unloaded chassis. We went back to 5" and the car went right back to 1.02 tripping with back tires.

Every car is different, you have to find that sweet spot in every car no matter how fast or slow.

Ed you guys have found the sweet spot with the Firebird. Car leaves flawless every pass, your chevelle was awesome to watch and was consistent. But you had to spend the time with it to find what it wanted, shocks & settings, travel limiters or non, rear suspension settings, etc..

Make 1 small change, keep good notes or read your data acquisition.

Frank Castros 10-08-2024 08:23 PM

Re: ET with and without wheelie.
 
I have often wondered about this subject and I always think about Morehead's Camaro because IMHO is the best leaving Super Stock in the sport and is Holt built.

However;

I remember being at the Summernationals at Englishtown when Alderman was driving the Wayne County Daytona and they were bad fast at the time (and that's another story) the car barely lifted the wheels but carried them for over 100' and qualified on the pole. That was one of the most impressive thing I ever seen a race car do.
Now you can say that they were cheaters and you would be right but at the same time those boys knew their stuff.

Frank Castros 10-08-2024 08:41 PM

Re: ET with and without wheelie.
 
Doug Battipaglia of Flo Designs who did the heads on the Wayne County car told us they never tested with other Pro Stock teams present. It was all Top Secret as per Chrysler Corp.
Doug didn't do our heads, Bill Ceralli did but Doug provided some speed secrets.

Frank Castros 10-08-2024 09:13 PM

Re: ET with and without wheelie.
 
Oh by the way Bill Ceralli is the most talented and skilled machinist ever.

Adger Smith 10-09-2024 12:42 AM

Re: ET with and without wheelie.
 
Frank, I have a set of the B-1TS-8 heads done by Doug.. Good heads.
What happened to him.. Lost track of him several years ago

1320racer 10-09-2024 04:23 AM

Re: ET with and without wheelie.
 
Quote:

Originally Posted by nickh (Post 703878)
Back in 2005 we ran TS with Jerry Haas built car. We experimented with wheelie bar settings. We found that the car liked 5" height for wheelie bars, our car was pretty consistent tripping 60' clocks at 1.02 with back tires. We went to 4" on bars the car slowed to 1.04, we went to 6" on bars and car hit the bars too hard and unloaded chassis. We went back to 5" and the car went right back to 1.02 tripping with back tires.

Every car is different, you have to find that sweet spot in every car no matter how fast or slow.

Nick, this discussion nor my comments are about 2500 lb. tube chassis cars which can't be compared to 3500+lb.stock suspension cars nor 3000+ lb. back halved cars. Their "wheelies" as well their wheelie bars are in play for different reasons.

Quote:

Ed you guys have found the sweet spot with the Firebird. Car leaves flawless every pass, your chevelle was awesome to watch and was consistent. But you had to spend the time with it to find what it wanted, shocks & settings, travel limiters or non, rear suspension settings, etc..

Make 1 small change, keep good notes or read your data acquisition.
Thank you and I do. My Chevelle was badazz but a totally different car than my Firebird. That said, in all honesty I set the Firebird up in the first few outings of buying it back in October of 2008, after installing my engine, trans, converter and rear gear, I changed the ride height, front coilover springs, shock settings, travel limiters and wheelie bar height.

This photo is from my 2nd weekend out in the car in October of 2008 after licensing with the car the week before.

https://i.imgur.com/00GbG3Ll.jpg

In 2009 I swapped out the front shocks to Afco's bnc shocks and those same shocks are in place today. From then until the winter of 2022, when the front and rear suspensions were rebuilt as a part of updating and freshening this car from front to rear and top to bottom

https://classracer.com/classforum/sh...t=86419&page=4

the car has been run with the same suspension settings other than adjusting the front shock extension on race day. The car as I run it today is about 200 lbs. heavier than when I bought 16 years ago and has far more power under the hood than when it was raced in Super Stock or when I bracket raced it footbraking.

Glenn Briglio 10-09-2024 06:43 AM

Re: ET with and without wheelie.
 
Quote:

Originally Posted by Frank Castros (Post 703861)
Glenn,
I did and thought that it was one of the best. didn't think the front wheels were that high off the track.
Frank

Most of the fast ones were a foot and a half off the ground. A lot different than prior years.

1320racer 10-09-2024 09:14 AM

Re: ET with and without wheelie.
 
Frank when did you last speak to Bill, it’s been several years since I have spoken to him. Back in the 90s and into the early 2000s Bill and I were competitors as well friendly, he joined our Saturday night dinner after racing often.

nickh 10-09-2024 09:15 AM

Re: ET with and without wheelie.
 
Ed how much clearance do you have from carb to hood with that setup?

1320racer 10-09-2024 09:28 AM

Re: ET with and without wheelie.
 
Minimal. Basically the height of the Intensity Racing Products carb screen, about 1” to the top of the carb’s main body. That said, the carb gets air off the windshield and the nostrils at the front of the hood.

https://i.imgur.com/icw0sAil.jpg

https://i.imgur.com/QYy3GBVl.jpg

https://i.imgur.com/MwCyDKrl.jpg

nickh 10-09-2024 09:35 AM

Re: ET with and without wheelie.
 
Think you could be loosing a little cfm that close to the hood? Have you experimented with a different hood for just a tad more clearance? Just wondering.

1320racer 10-09-2024 09:51 AM

Re: ET with and without wheelie.
 
I could be. The carb is a custom deal that flows over 1350cfm. As to hoods, I considered it when the car was updated nearly 2 years ago because I wanted to put a taller intake manifold and dominator carb on so I bought 2 hoods, one a Joe Van O pin on cowl hood

https://i.imgur.com/p447sLKl.jpg

https://i.imgur.com/FUIzWyQl.jpg

https://i.imgur.com/Nvz4tYkl.jpg


the other a VFN hinged cowl hood which I hated and didn't work with our carb location

https://i.imgur.com/d2h87lEl.jpg


The Joe Van O hood looked good but a pin on hood doesn't work for how we race. I love the look of relatively quick/fast cars with an OEM flat hood just like my former Chevelle had. I returned the hinged hood but still have the Joe Van O hood which took 5 months to get and is for sale.

https://i.imgur.com/kVYCDvYl.jpg

FYI, the intake manifold on my engine has been with me since 2007

https://i.imgur.com/HvAms6ol.jpg

first installed on the Chevelle’s last engine. It is fully ported, runners extended and the carb pad cut down, done by BCHS for hood clearance and it’s been on every engine in the firebird.

GUMP 10-09-2024 10:14 AM

Re: ET with and without wheelie.
 
Quote:

Originally Posted by my69396 (Post 703741)
How much will a wheelie affect ET plus or nothi?

My perspective is that you need to get all the weight on the rear tire. Since we run performance based classes, we are trying to use ALL the power. On marginal tracks, you can have a hard time if the front end is tied down too much without some kind of power management.

From experience, moderate wheelies don't slow you down at all. I feel that is because aero is not a factor. A monster wheelie will absolutely burn a bunch of ET...

1320racer 10-09-2024 10:26 AM

Re: ET with and without wheelie.
 
Quote:

Originally Posted by gump (Post 703903)
a monster wheelie will absolutely burn a bunch of et...

GUMP...knows!

Aero aside, if you get to the 60 foot clocks slower and you WILL, breaking the beam with any part of the car behind the front tires no mind the back tires, you WILL run a slower ET!

KennyAnderson 10-09-2024 11:26 AM

Re: ET with and without wheelie.
 
Quote:

Originally Posted by 1320racer (Post 703874)
As usual you add nothing of relevance to a thread, you?re a clown!

Now what is preposterous is some here believe that a car can break the 60 foot beams just as quick with the back tires as it can with the front tires!

I do what I can!! LMAO!!

I've driven, owned, or worked on just about everything under the sun. As mentioned, several times in this thread, EVERY combination likes what it likes. Our two stockers are prime examples, the Nova likes a small wheelie, the wagon is faster with a bigger wheelie. There is no hard and fast rule. Testing and more testing will always tell the truth.

1320racer 10-09-2024 11:31 AM

Re: ET with and without wheelie.
 
you're clueless!

340Cuda 10-09-2024 02:10 PM

Re: ET with and without wheelie.
 
Quote:

Originally Posted by JGrossijr (Post 703796)
No 2 cars are exactly the same so it's unlikely there is a "right" answer that fits every application. In my experience as long as you're not unloading the rear tires, it's not the wheelie that slows a car down, it's the landing. I have found that if I can smooth out the G-meter dip at touch down, without giving up any 60', the car goes faster. There are lots of different ways to approach that, including wheel stand height.

I agree 100%, I remember the late Ed Wright said his Firebird needed to do a wheelie to run well. Despite his representations Ed was one of the sharper knives in the drawer and I am sure that was correct for his car.

However it is apparently not true for every car.

I continue to miss Ed.

Frank Castros 10-09-2024 02:43 PM

Re: ET with and without wheelie.
 
Quote:

Originally Posted by Adger Smith (Post 703885)
Frank, I have a set of the B-1TS-8 heads done by Doug.. Good heads.
What happened to him.. Lost track of him several years ago

Doug passed away February 6, 2019.

Frank Castros 10-09-2024 02:45 PM

Re: ET with and without wheelie.
 
Quote:

Originally Posted by 1320racer (Post 703895)
Frank when did you last speak to Bill, it?s been several years since I have spoken to him. Back in the 90s and into the early 2000s Bill and I were competitors as well friendly, he joined our Saturday night dinner after racing often.

Bill and I last spoke about two years ago but my good friend and former racing partner Jimmy Lovallo spoke to Bill within the past year.

Frank Castros 10-09-2024 02:49 PM

Re: ET with and without wheelie.
 
IMHO the sixty foot ET and trap MPH are the measure of your race car.

1320racer 10-09-2024 03:12 PM

Re: ET with and without wheelie.
 
Agree, NOT wheelie height and my former Chevelle as well my Firebird are bench marks with 1.28 @ 3880 lbs. and 1.17 @ 3150 lbs. respectively and both launched off the footbrake!

Dan Bennett 10-09-2024 03:44 PM

Re: ET with and without wheelie.
 
Quote:

Originally Posted by Frank Castros (Post 703929)
IMHO the sixty foot ET and trap MPH are the measure of your race car.


I agree to a point but imo the 60-330 is just as important. You can dead hook and get a crazy low 60 but the engine and car are not working together and your et will reflect that.

Again, my opinion only, but a short interval from 60 to the next clock point has to be there to enable a good run assuming you don't get loose downtrack.

1320racer 10-09-2024 03:46 PM

Re: ET with and without wheelie.
 
60 foot is EVERYTHING as it relates to ETs! What you lose or gain in 60 foot directly relates to the ET in the n/a S/SS type cars being discussed here.

Stan Weiss 10-09-2024 04:05 PM

Re: ET with and without wheelie.
 
What some people are having a hard time grasping, is if you hit the 60 foot light with your back wheel. Then that time is really for 60 foot plus your wheelbase.


Stan

Dan Bennett 10-09-2024 04:05 PM

Re: ET with and without wheelie.
 
This is one of the best threads I've ever seen here. I'm seeing other racers experiences and it's making me think.

I'm beginning to think the disconnect from my original post is due to the fact that I worked almost solely on 4 link stick cars. And that the rules class cars have to run under just won't allow the important parts to be tuned to top performance.

Please correct me if I'm wrong, but I've been giving a lot of thought to the people who say a big wheelstand flashes the converter better. My gut feeling is that's because the slicks are loaded more and the traction loads the converter more.

You could do the same thing and keep the nose close to the ground and use the torque to move the car forward with a four link. I'm thinking that your classes simply don't have the ability to add that extra traction other than standing the car up. Again, I'd love to find I'm on the wrong track here so please speak up if you disagree.

I ran into this while working with Steve Johnson. I looked at his graphs and saw immediately where things could be improved in a major way. But the problem was that the clutches PSBs had available at the time were not able to do the adjustment that was needed.

In short, the people who are saying different vehicles need different things have helped me get a grip and I thank every one of them.

1320racer 10-09-2024 04:14 PM

Re: ET with and without wheelie.
 
Quote:

Originally Posted by Dan Bennett (Post 703938)
This is one of the best threads I've ever seen here. .

you're welcome

Stan Weiss 10-09-2024 04:30 PM

Re: ET with and without wheelie.
 
Quote:

Originally Posted by Frank Castros (Post 703929)
IMHO the sixty foot ET and trap MPH are the measure of your race car.


That does depend. Over 10 years ago I was doing a simulation of a PSB with some help from George Bryce. I was able to get everything almost dead on. I ask George about the fact that I ran out of RPM before the finish line. He said he did too, but he gave up some MPH because it ran a lower ET.


Stan

Mike Pearson 10-09-2024 04:35 PM

Re: ET with and without wheelie.
 
In a low HP combo the wheelie is similar to wheel speed. It helps get the engine to its max power quicker. The higher HP and bigger Cu Inch combos might be quicker by keeping the front end down. The car will be more consistent with the wheels up and no spin/wheel speed. Stock and super stock cars are set up to dead hook. Most are on radials.

Hacksaw 10-09-2024 04:46 PM

Re: ET with and without wheelie.
 
Quote:

Originally Posted by GUMP (Post 703903)
My perspective is that you need to get all the weight on the rear tire. Since we run performance based classes, we are trying to use ALL the power. On marginal tracks, you can have a hard time if the front end is tied down too much without some kind of power management.

From experience, moderate wheelies don't slow you down at all. I feel that is because aero is not a factor. A monster wheelie will absolutely burn a bunch of ET...

My theory is: Race cars that have quicker ets doing monster wheelies is because, when the car begins to come down it essentially "throws" the car forward. This applies to cars with high ground clearance that pitch and rotate and relatively moderate power.

1320racer 10-09-2024 04:49 PM

Re: ET with and without wheelie.
 
Your theory is malarkey

Billy Nees 10-09-2024 04:59 PM

Re: ET with and without wheelie.
 
Quote:

Originally Posted by Dan Bennett (Post 703938)
In short, the people who are saying different vehicles need different things have helped me get a grip and I thank every one of them.

Ya know Dan, it's a funny thing that you put it that way. In a Stocker that can use a Powerglide or a 3-speed, with the 'glide the 60' times are almost irrelevant. They're almost a residual number. The car needs to be set-up to run it's best E.T. and whatever the 60' time is, it is. One of the "funniest" things ever said to me about "tuning" a car was by the late Jim Beattie; "Nees, is there somebody standing on the 60' clock handing out $100 bills? Then don't worry about it".
Now a 3-speed Stocker is a totally different animal. From my experience, what ever you can do to get a 3-speed car to the 330' clock faster will translate to better E.T.s all the way down the track.

BobbyH 10-09-2024 05:14 PM

Re: ET with and without wheelie.
 
Great thread! Do these theories/opinions/physics also apply the same to a STICK car?

1320racer 10-09-2024 05:27 PM

Re: ET with and without wheelie.
 
Quote:

Originally Posted by Billy Nees (Post 703948)
From my experience, what ever you can do to get the car to the 330' clock faster will translate to better E.T.s all the way down the track.

again, it all starts and ends with 60 foot and yes, I have run both a powerglide and a turbo400 in the same car!

Adger Smith 10-09-2024 06:22 PM

Re: ET with and without wheelie.
 
We have had a lot of good info passed around in this thread...
This thread brought back an old memory from when Lee Shepherd was racing the Shepherd/Morrison Modified Production Chevy 11 wagon at my track in Whitehouse Texas. This is back before reaction times and we only had 60' and 1/4 mile times. I ask him if the 60' was the most important part of the race track. His answer was NO...
He then said "The First Inch" is most important
Think about it!

1320racer 10-09-2024 09:06 PM

Re: ET with and without wheelie.
 
He was wrong!

L.Fite 10-09-2024 10:01 PM

Re: ET with and without wheelie.
 
How dare you blaspheme Lee Shepherd...
Them there is fightin' words!...


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