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Big Wheelie, UPDATE w/ pic at 60'...
#1035696
07/19/11 12:28 AM
07/19/11 12:28 AM
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Joined: Jan 2004
Posts: 903
Saskatchewan, Canada
cudabin
OP
super stock
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OP
super stock
Joined: Jan 2004
Posts: 903
Saskatchewan, Canada
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Ok, gratuitous Wheelie shot from Sunday. Went 1.37 - 60 foot tripping the beams with the back tires... What would that equal if I had the front down before then??? http://www.pbase.com/nitroimage/image/136530907UPDATE, here is a pic at the 60 foot mark. The Orange box under the left front tire is the beam which was at 4.25" off the ground. I think the next thing to trip it would have definitely been the rear tires. Cheers, Arnie
Last edited by cudabin; 07/21/11 11:38 PM.
67 Cuda 8.48@ 158.7 mph 1.18 60' 2,600 DA(so far...)
70 Super Bee 440 Six Pack 4-speed. 13.2 @ 104 Stock exhaust/Street tires.
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Re: Big Wheelie, tripped the 60's with rear tires...
[Re: Al_Alguire]
#1035700
07/19/11 06:49 AM
07/19/11 06:49 AM
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Joined: Jan 2003
Posts: 10,151
Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,151
Frostbitefalls MN (Rocky&Bullw...
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Doing the math figuring 52 mph at the 60 ft clocks (average) I come up with .01224 lost time. Sounds about right since you run mid 1.20s normally. 60 fts should be better when you settle the launch down to a minimal wheelstand.
What are your 330 ft times with a comparable mph at the 1/8th?
Last edited by gregsdart; 07/19/11 06:51 AM.
8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Big Wheelie, tripped the 60's with rear tires...
[Re: gregsdart]
#1035701
07/19/11 08:04 AM
07/19/11 08:04 AM
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Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Leon441
master
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master
Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
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I used to trip clocks on rear tires quite often. Used to ignore the 60 ft times for a while and just look at the 330. As long as the 330 ft time stayed the same, didn't get concerned. With equal 330ft times rear tire 60 fts were 1.21 and front tire 60 fts were 1.17. Obviously the slower the 60 ft MPH the more differnce it would make. Wheelbase would also be a factor. My wheelbase is only 106. When running the 727 transmission we actually had a couple 330 ft rear wheel times. The powerglide calmed the car down but, we also lost ET for a short while. Some lower rear gears fixed that. Never tried the aftermarket 727 gearsets.
Career best 8.02 @ 169 at 3050# and 10" tires small block power.
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Re: Big Wheelie, tripped the 60's with rear tires...
[Re: CRT]
#1035705
07/19/11 01:21 PM
07/19/11 01:21 PM
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Joined: May 2006
Posts: 1,414
Stow ,Ohio
demon440
pro stock
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pro stock
Joined: May 2006
Posts: 1,414
Stow ,Ohio
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I see a lot of waisted time and power. You want the car to go forward not up. Looks cool though. 
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Re: Big Wheelie, tripped the 60's with rear tires...
[Re: demon440]
#1035706
07/19/11 04:18 PM
07/19/11 04:18 PM
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Joined: Feb 2006
Posts: 479
Alberta, Canada
451Guy
mopar
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mopar
Joined: Feb 2006
Posts: 479
Alberta, Canada
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I don't care about lost time and wasted energy. That is JUST cool!!! Let the Pro Stock guys worry about that stuff! Is that in Saskatoon? Did they put in a cement launch pad?
Thanx 451 Guy
512 cu in 71 Demon Super Street Car - NO LONGER - Broke Crank
Best ET 9.57 @ 139.96
451 cu in Pump Gas - 71 Demon Super Street Car
Best ET 9.99 @ 136.80 - UPDATED - NEW BEST 9.91 @ 136.90
512 cu in 69 Charger R/T
Best ET 11.39 @ 118.11
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Re: Big Wheelie, tripped the 60's with rear tires...
[Re: 451Guy]
#1035707
07/19/11 04:44 PM
07/19/11 04:44 PM
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Joined: Nov 2004
Posts: 2,825
Sk. Canada
RemCharger
master
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master
Joined: Nov 2004
Posts: 2,825
Sk. Canada
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Quote:
I don't care about lost time and wasted energy. That is JUST cool!!! Let the Pro Stock guys worry about that stuff! Is that in Saskatoon? Did they put in a cement launch pad?
That was in Yorkton. But Saskatoon has had 160' or so of concrete for some years now. We're the only 1/4 mile in sask other than swift currents outlaw program. You should come try it. www.racesir.com
Sorry to highjack Arnie, you coming out this weekend?
Rem
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Re: Big Wheelie, tripped the 60's with rear tires...
[Re: RemCharger]
#1035708
07/19/11 05:08 PM
07/19/11 05:08 PM
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Joined: Jan 2004
Posts: 903
Saskatchewan, Canada
cudabin
OP
super stock
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OP
super stock
Joined: Jan 2004
Posts: 903
Saskatchewan, Canada
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Thanks guys,
First hit of the day, it dead hooked, but as the track got hot, it simply popped the tires up about 6" and carried them out about 15 feet, then set down. High heat and humidty and a greasy track dropped the 60 foot down to 1.30 (tripped by the front tires)
Hey Remi,
Yes, i will be at SIR this weekend and will hope for traction and cooler weather.
Cheers,
Arnie
67 Cuda 8.48@ 158.7 mph 1.18 60' 2,600 DA(so far...)
70 Super Bee 440 Six Pack 4-speed. 13.2 @ 104 Stock exhaust/Street tires.
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Re: Big Wheelie, tripped the 60's with rear tires...
[Re: cudabin]
#1035709
07/19/11 06:12 PM
07/19/11 06:12 PM
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Joined: Feb 2006
Posts: 479
Alberta, Canada
451Guy
mopar
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mopar
Joined: Feb 2006
Posts: 479
Alberta, Canada
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Hey Boys! Last time I was in Saskatoon was in 2006. Love going there. The people are awesome and we always had a great time. Last time we were there I could not get my car to hook. Every time I let go of the tranny Brake it would smoke the tires. It was spinning so bad that I ended up braking the case in the tranny and a couple weeks later in Edmonton it ended up grabbing a rod bearing. This is why I am asking about the starting line. I have not raced for a few years but I am hoping to make it back next summer. Best of luck this weekend! Hope the weather holds! 
Thanx 451 Guy
512 cu in 71 Demon Super Street Car - NO LONGER - Broke Crank
Best ET 9.57 @ 139.96
451 cu in Pump Gas - 71 Demon Super Street Car
Best ET 9.99 @ 136.80 - UPDATED - NEW BEST 9.91 @ 136.90
512 cu in 69 Charger R/T
Best ET 11.39 @ 118.11
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Re: Big Wheelie, tripped the 60's with rear tires...
[Re: 451Guy]
#1035710
07/19/11 06:51 PM
07/19/11 06:51 PM
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Joined: Jul 2008
Posts: 30,632
Florida STAYcation
IcorkSOAK
Financed his waterbed
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Financed his waterbed
Joined: Jul 2008
Posts: 30,632
Florida STAYcation
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Quote:
I don't care about lost time and wasted energy. That is JUST cool!!! Let the Pro Stock guys worry about that stuff! Is that in Saskatoon? Did they put in a cement launch pad?
NEVER had a car that would do that ... but I would be more worried about what happens when the car comes-to-earth ... 
I have seen 'nuff of these wheelies in the past and have seen PLENTY of damage to frontends, suspensions, headers, oil pans and even engines.
DOES look neat though ....
TO the OP ... with that heavy VFN frontend on it .. I would have thought it would have stayed-low ! 
YOU sure have some decent power THEN ...to do what you did ...
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Re: Big Wheelie, tripped the 60's with rear tires...
[Re: IcorkSOAK]
#1035711
07/19/11 07:06 PM
07/19/11 07:06 PM
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Joined: Jan 2004
Posts: 903
Saskatchewan, Canada
cudabin
OP
super stock
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OP
super stock
Joined: Jan 2004
Posts: 903
Saskatchewan, Canada
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Hey Doc,
Yes it is heavy on the front with about 57% of the wieght there. The 4 gallon fule cell is front mounted which does not help...
451 guy, I pulled the same type of wheelie 2 weeks ago in SIR, so yes the traction is much better there. I then tightened everything up on the suspension and spun the tires in eliminations loosing by .002
Cheers,
Arnie
67 Cuda 8.48@ 158.7 mph 1.18 60' 2,600 DA(so far...)
70 Super Bee 440 Six Pack 4-speed. 13.2 @ 104 Stock exhaust/Street tires.
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Re: Big Wheelie, tripped the 60's with rear tires...
[Re: gregsdart]
#1035713
07/19/11 07:53 PM
07/19/11 07:53 PM
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Joined: Jan 2003
Posts: 16,941
NC
440Jim
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,941
NC
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Quote:
Doing the math figuring 52 mph at the 60 ft clocks (average) I come up with .1224 lost time.
That is about the same as I come up with if I assume 52 mph and 111" between the front and rear tire trip points.
But I think closer to 55 mph and with a 108" wheel base, and tire diameters of 26/31 (~105.5" between trip points):
55 mi/hr x 5280 ft/mi /3600 sec/hr x 12in/ft = 968 in/sec
For 105.5", that is about 105.5/968=0.109 sec
So the rear tire 1.37 might be about 1.26 with the fronts.
I might not have this 100%, but that is my estimate. The experience with my car is about 0.10 sec difference.
55 mi/hr x 5280 ft/mi /3600 sec/hr x 12 in/ft = 968 in/sec (again)
And my car is 111 -(32/2-26/2)=108.0" between trip points, (not exact need equation of a circle at beam height)
So... 108.0/968 = 0.11 sec and I have seen about 0.10 on the same day.
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Re: Big Wheelie, tripped the 60's with rear tires...
[Re: 440Jim]
#1035715
07/19/11 10:03 PM
07/19/11 10:03 PM
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Joined: Dec 2006
Posts: 3,667
Arizona
Chris'sBarracuda
master
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master
Joined: Dec 2006
Posts: 3,667
Arizona
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Unless it was in that position thru 60'... The clocks most likely caught a part of the car further forward.. The sensors aren't ground level..  Somewhere in the neighborhood of 8" off ground.. You really can't figure it out..  That's why you go with the 330' mark.. Chris.. 
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Probably somewhere in the 1.27-1.28 range. 
