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Re: Video of my first time to the track 71 Valiant 416 4spd
[Re: Steve Barton]
#1046507
08/03/11 09:54 PM
08/03/11 09:54 PM
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Joined: Feb 2004
Posts: 6,257
acworth / N. georgia - south e...
cheapstreetdustr
master
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master
Joined: Feb 2004
Posts: 6,257
acworth / N. georgia - south e...
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i could be wrong but to me that video looked like the clutch was slipping...not the tires..
in slow motion the rear tire was compressed and wrinkled the whole 80ft..of the launch...
cheapst
365" Iron J heads,,3480lbs best 1.39 60ft on SS springs.10.54,124 mph ...6.67 1/8th et.average 60fts 1.46 w/ small cam &.063 no2 pill tagged & insured
[image][/image]
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Re: Video of my first time to the track 71 Valiant 416 4spd
[Re: cheapstreetdustr]
#1046508
08/03/11 11:04 PM
08/03/11 11:04 PM
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Joined: Aug 2009
Posts: 151
Canada BC
Steve Barton
OP
member
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OP
member
Joined: Aug 2009
Posts: 151
Canada BC
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Quote:
i could be wrong but to me that video looked like the clutch was slipping...not the tires..
in slow motion the rear tire was compressed and wrinkled the whole 80ft..of the launch...
cheapst
I spoke to Advanced clutches today and It was explained to me I have to launch this clutch no less than 5000 rpm, not just off idle like I did, so ya very poss it was slipping. I showed him the video and he said Ooooooh man you can't do that, you got to rev that baby 5800 rpm then drop the clutch and don't let up on the throttle until your done.
Sounds just like some other good advice from this thread.
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Re: Video of my first time to the track 71 Valiant 416 4spd
[Re: MrOctober44]
#1046510
08/04/11 12:10 AM
08/04/11 12:10 AM
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Joined: Jun 2005
Posts: 6,257
gulfport, ms, west mi
rowin4
master
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master
Joined: Jun 2005
Posts: 6,257
gulfport, ms, west mi
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Well you can try to launch that high but I think you'll find that unless you have a very good track prep you'll be spinning and not even moving. There's allot of factors to get a good launch , proper rpm, tire pressure, condition of the tire's, shocks, [ front and back ] , springs and proper track prep.   Is the air port concrete where you race?? and do they do any prep? 
Last edited by rowin4; 08/04/11 12:15 AM.
it's ok to butt heads, just don't do it with a butthead
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Re: Video of my first time to the track 71 Valiant 416 4spd
[Re: rowin4]
#1046511
08/04/11 01:41 AM
08/04/11 01:41 AM
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Joined: Aug 2009
Posts: 151
Canada BC
Steve Barton
OP
member
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OP
member
Joined: Aug 2009
Posts: 151
Canada BC
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Quote:
Well you can try to launch that high but I think you'll find that unless you have a very good track prep you'll be spinning and not even moving. There's allot of factors to get a good launch , proper rpm, tire pressure, condition of the tire's, shocks, [ front and back ] , springs and proper track prep. Is the air port concrete where you race?? and do they do any prep?
I should probably clear one thing up. When I said first time to the track I meant this year with this set up , all new drive line eng suspension ect, I have been racing this car on and off since I was a kid 1979 mostly in the last 5 years. I have been posting my build for the last two years on here. So ya I no what you mean about launches and prep. but this is all new to me with this much power and new suspension. the thing is you can't launch this clutch under 5000 rpm or it will slip, I can ad base press for lower rpm launches but I think I need to see how it is going to react on this much better track then the last. yes they do do a pretty good job prepping the track but no concrete. this weekend will be a test and tune for me.
thanks Steve B
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Re: Video of my first time to the track 71 Valiant 416 4spd
[Re: LAR_414]
#1046515
08/04/11 12:11 PM
08/04/11 12:11 PM
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Joined: Aug 2009
Posts: 151
Canada BC
Steve Barton
OP
member
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OP
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Joined: Aug 2009
Posts: 151
Canada BC
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Quote:
Radial tires or Bias Ply? At that track and if the prep isn't spot on,....I would not run the Radials. Once they spin, they don't like to recover quickly with a stick.
Bias, MT 29.5x 13.5 I am going to start @ 11 lbs
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Re: Video of my first time to the track 71 Valiant 416 4spd
[Re: Steve Barton]
#1046516
08/04/11 02:42 PM
08/04/11 02:42 PM
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Joined: Apr 2005
Posts: 673
Emmett, Idaho
SuperStockWagon
mopar
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mopar
Joined: Apr 2005
Posts: 673
Emmett, Idaho
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Quote:
Quote:
i could be wrong but to me that video looked like the clutch was slipping...not the tires..
in slow motion the rear tire was compressed and wrinkled the whole 80ft..of the launch...
cheapst
I spoke to Advanced clutches today and It was explained to me I have to launch this clutch no less than 5000 rpm, not just off idle like I did, so ya very poss it was slipping. I showed him the video and he said Ooooooh man you can't do that, you got to rev that baby 5800 rpm then drop the clutch and don't let up on the throttle until your done.
Sounds just like some other good advice from this thread.
Steve,
Be sure to follow Rob's advice, he's the best in the business! He knows clutches and sticks and how to make them work.
Not only does he pilot a record holding superstock 4spd race car,but his products are also found in many record holders!
Nice Ride!
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Re: Video of my first time to the track 71 Valiant 416 4spd
[Re: Steve Barton]
#1046518
08/04/11 04:54 PM
08/04/11 04:54 PM
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Joined: Jan 2003
Posts: 17,918
Akron, Ohio
ProSport
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,918
Akron, Ohio
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Nice car! There's quite a dip in that track right when you hit 4th gear.
1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
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Re: Video of my first time to the track 71 Valiant 416 4spd
[Re: ProSport]
#1046519
08/04/11 08:56 PM
08/04/11 08:56 PM
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Joined: Jul 2006
Posts: 9,366
Lehigh Acres, Florida
rickstershemi
master
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master
Joined: Jul 2006
Posts: 9,366
Lehigh Acres, Florida
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Nice ride Steve  Sounds like your headed in the right direction....trust your clutch guy Looking forward to your next test results Rickster
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Re: Video of my first time to the track 71 Valiant 416 4spd
[Re: 69B3GT]
#1046520
08/05/11 12:24 AM
08/05/11 12:24 AM
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Joined: Aug 2009
Posts: 151
Canada BC
Steve Barton
OP
member
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OP
member
Joined: Aug 2009
Posts: 151
Canada BC
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Quote:
Nice times and car
Didnt see anyone mention it so.......how long do you think the 8.75 is gonna last?
Well its the mopar Aluminum race third member and built write so I think I'm good to go.
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Re: Video of my first time to the track 71 Valiant 416 4spd
[Re: Steve Barton]
#1046521
08/05/11 05:36 AM
08/05/11 05:36 AM
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Joined: Oct 2008
Posts: 1,894
Mira Loma, CA
69B3GT
top fuel
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top fuel
Joined: Oct 2008
Posts: 1,894
Mira Loma, CA
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Quote:
Quote:
Nice times and car
Didnt see anyone mention it so.......how long do you think the 8.75 is gonna last?
Well its the mopar Aluminum race third member and built write so I think I'm good to go.
Good to know. Figured id ask just to be safe. Love the car
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Re: Video of my first time to the track 71 Valiant 416 4spd
[Re: toddd]
#1046525
08/08/11 10:39 PM
08/08/11 10:39 PM
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Joined: Aug 2009
Posts: 151
Canada BC
Steve Barton
OP
member
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OP
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Joined: Aug 2009
Posts: 151
Canada BC
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Quote:
How much c/w did you add and how many turns of base did you finish at???
Awesome weekend Steve.
Your car ran STRONG!.
I'll see you in McNeill.
Todd
Hey Todd, I finished back at 3 turns and the counter weight I don't no until I weigh it but it was a 1/4" grade 8 bolt and nut, no washers 3/4" long x 3.
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. It uses a lower base pressure and needs the centrifical force of the weights on the top of the fingers to keep the disc/s applied to the flywheel. In a standard borg&beck style pressure plate and rag disc it's a completely different story. Lots of base pressure and no need of high rpms to create pressure. 
![6762013-clutch_sm[1].jpg](/ubbthreads/ubbthreads.php/ubb/download/Number/108899/filename/6762013-clutch_sm[1].jpg){kind=link}