Author Topic: Jay wins!  (Read 34278 times)

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machoneman

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Re: Jay wins!
« Reply #60 on: September 20, 2015, 08:34:34 PM »
Jakes66, your pic showed me a lot! 

I had commented during Drag Week about chassis adjustments, et al. The side pics shows just about perfect lift, rear separation and slick wrap-up. If anything, I'd advise trying a 1 lb. increase in slick pressure, + 1 lb. at a time thereafter until e.t.'s increase and maybe one click down on the rear coil overs (to increase squat). Experimentation is key yet the car does have some e.t. left in it solely due to chassis tuning. JMO!   
Bob Maag

JERICOGTX

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Re: Jay wins!
« Reply #61 on: September 20, 2015, 09:16:21 PM »
The slicks need more air going by that picture. Too much wrinkle. The wrinkle also needs to be on the forward edge, just in front of where the contact patch is. I think this picture is before Jay tightened the compression on the rear shocks. Jay what rear springs are in the car?

Jeff

jayb

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Re: Jay wins!
« Reply #62 on: September 20, 2015, 09:33:56 PM »
Was that shot at Union Grove?  Looks like it, but I'm not sure.  I can't remember offhand what springs are in the rear coil overs, I'll have to check into that.  Regarding air pressure we kept it at 12.5 pounds cold pretty much all week; it was about 13.5 pounds when the tires were warmed up.  I agree that based on the picture, more air pressure would be helpful.
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

JERICOGTX

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Re: Jay wins!
« Reply #63 on: September 20, 2015, 09:36:05 PM »
Yes, that picture is from Union Grove.

66FAIRLANE

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Re: Jay wins!
« Reply #64 on: September 20, 2015, 11:33:22 PM »
The whole thing including the pre DW thrash has been fascinating and compelling reading. You have a great 'easy reading' writing style and it is a pleasure to live all the moments from afar. I don't know how you find the time and energy to accomplish all that you do, not to mention write about it in such detail. A massive tip of the hat and a hearty congratulations from the other side of the pond.

Might just go out to the shed, open the Fairlanes 'hood' and share a celebratory beer with my little wedgy FE. Well done!

JAKES66

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Re: Jay wins!
« Reply #65 on: September 21, 2015, 05:37:58 AM »
« Last Edit: September 21, 2015, 07:55:01 AM by JAKES66 »
Jake Mumbauer
-1966 Galaxie 500XL Hardtop  390 C6 3.70 Tracloc   Soon with upgraded 390 and HEH-CC toploader

Joe-JDC

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Re: Jay wins!
« Reply #66 on: September 21, 2015, 10:28:35 AM »
I didn't want to "armchair quarterback" during the events, but my first thought was you need more air pressure in the slicks on that first run.  So glad you were able to finish the week and win!  Hope you will find a few more tenths in the combination as you progress.  Would be interesting to know how the first intake manifold would have compared et wise to the current intake.   Congratulations!  Joe-JDC
Joe-JDC '70GT-500

TomP

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Re: Jay wins!
« Reply #67 on: September 21, 2015, 04:31:33 PM »
That does not look too low on pressure to me. I think more air might have just spun, the tracks seemed terribly prepped this year.

Andy...  you mean bonnet.... thought a hood is the roof... or a bad guy.  ???

66FAIRLANE

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Re: Jay wins!
« Reply #68 on: September 21, 2015, 05:41:41 PM »
So true Tom, so true.  :)

jayb

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Re: Jay wins!
« Reply #69 on: September 21, 2015, 05:42:32 PM »
Actually the tracks were really well prepared, much better than anything I've run on before (except maybe Muncie in 2009).  Ran 1.28 60 foot in Union Grove...
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

XR7

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Re: Jay wins!
« Reply #70 on: September 21, 2015, 06:08:31 PM »
With good power and a heavy car, the tire is going to wad up like that even with (almost) correct air pressure. A stiff sidewall slick will help, and/or running tubes will also help... although I hate tubes as they are heavy and will slow it down on the top end.

The old saying, run as much air pressure as you can... and still hook... applies here. It will drive better and MPH higher with more pressure, so it is just finding the sweet spot for that track, on that day.

I like M/T stiff sidewall bias slicks, I have run Hoosier/Goodyear, and they hold air good, but the sidewall goes away pretty fast, and a stiff sidewall wasn't available for my tire size.
68 Cougar XR7 GT street legal, 9.47@144.53, 3603# at the line, 487 HR center oiler, single carb, Jerico 4 speed, 10.5 tires, stock(er) suspension, all steel full interior

machoneman

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Re: Jay wins!
« Reply #71 on: September 21, 2015, 06:14:59 PM »
The old saying, run as much air pressure as you can... and still hook... applies here. It will drive better and MPH higher with more pressure, so it is just finding the sweet spot for that track, on that day.

Truer words were never spoken! As Jay noted the Grove at least had good prep, hence the great 0-60' time. Still, as mentioned above, more slick pressure should help. Experimentation is key here as if the car can do back-to-back runs, as Jay noted and did a few times, it makes it easier to test some quickly made changes like coil-over 'clicks', more/less slick pressure, A-arm limiter extension, rear 4-link changes, etc. 
« Last Edit: September 21, 2015, 06:20:19 PM by machoneman »
Bob Maag

JERICOGTX

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Re: Jay wins!
« Reply #72 on: September 21, 2015, 06:27:15 PM »
Jay what width rim and back spacing are on the car? I agree a stiffer sidewall will help along with tubes and more rim screws. You can try my M/T 31x10.5w's if they fit the car. I think with a GOOD test day we can get the car to consistently go 1.25 60's.

Jeff

jayb

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Re: Jay wins!
« Reply #73 on: September 21, 2015, 08:36:16 PM »
The Hoosiers are a stiff sidewall version.  Tires are 10.5/31.0-15, on a 12" wide rim with 7" backspacing.  Tread width is just over 11".  I used to have 10" rims and 5" backspacing, and didn't get full contact across the width of the tread.
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

XR7

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Re: Jay wins!
« Reply #74 on: September 23, 2015, 02:34:35 PM »
Quote
The Hoosiers are a stiff sidewall version.  Tires are 10.5/31.0-15, on a 12" wide rim with 7" backspacing.

That sounds like a perfect setup Jay.
68 Cougar XR7 GT street legal, 9.47@144.53, 3603# at the line, 487 HR center oiler, single carb, Jerico 4 speed, 10.5 tires, stock(er) suspension, all steel full interior