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 Post subject: Re: Front drag tires
PostPosted: Wed Sep 19, 2018 10:55 am 
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SL6 Racer & Moderator
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Joined: Wed Jan 29, 2003 4:42 am
Posts: 6810
Location: Vine Grove, KY
Car Model*: More than I should have...
Hey Dennis! It's good to see you posting here! You need some super light front runners on the front of your Valiant convertible! That thing is FAST with you bangin' gears with that three on the tree! :D

I haven't even looked at the Challenger since a couple weeks before the Clay City race. I'm maybe just a tad burned out at the moment...

The rear wheels aren't back from the powder coater yet. Luckily, those could be saved and I won't have to use the 29.5# per wheel steel wheels I got from Speedway as a desperate replacement measure. I'll probably have to run tubes now, but that's okay. Once I get the rear wheels back I'll post a weight comparison between them and the steel wheels. That's gonna be huge!

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 Post subject: Re: Front drag tires
PostPosted: Wed Sep 19, 2018 12:48 pm 
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Supercharged
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Joined: Sat Nov 27, 2004 8:03 pm
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Location: IRWIN PA
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kozmickuda wrote:
It is not just the static weight that needs to be considered. Consider the front tires/wheels/brake rotors or drums as flywheels that need to be accelerated from a dead stop.

One of the defunct Mopar mags ran an A-B test about 20 years ago on a big block B-body using street tires/wheels vs. "race". IIRC, there was a definite improvement of about two tenths.




Yep agree.!

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 Post subject: Re: Front drag tires
PostPosted: Wed Sep 19, 2018 2:09 pm 
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Joined: Thu Oct 17, 2002 7:27 pm
Posts: 12245
Location: Park Forest, Illinoisy
Car Model*: 68 Valiant
2 tenths? Doubtful......I've never even seen 2 hundredths.

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 Post subject: Re: Front drag tires
PostPosted: Wed Sep 19, 2018 4:54 pm 
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Joined: Wed Jan 29, 2003 4:42 am
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Location: Vine Grove, KY
Car Model*: More than I should have...
Check the internet! It happens! :wink: :lol:

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 Post subject: Re: Front drag tires
PostPosted: Wed Sep 19, 2018 5:06 pm 
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Joined: Wed Oct 23, 2002 7:57 pm
Posts: 6110
Location: Waynesboro, Pa.
Car Model*: 65 Valiant 2Dr Post
And dat dere bridge is still for sale! :D :D

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2 Mopars come with Spark plug tubes. One is a highly refined, world class, racing machine. The other is a 426 CI. boat anchor!
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 Post subject: Re: Front drag tires
PostPosted: Thu Sep 20, 2018 4:48 am 
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SL6 Racer & Moderator
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Joined: Wed Jan 29, 2003 4:42 am
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Location: Vine Grove, KY
Car Model*: More than I should have...
I don’t doubt the 2 tenths. When you compare a full set of street wheels and tires with a full lighter race set the savings would be significant along with the flywheel effect.

Just a few degrees of weather or trans temp can make that change.

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 Post subject: Re: Front drag tires
PostPosted: Thu Sep 20, 2018 1:50 pm 
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Joined: Wed Oct 23, 2002 7:57 pm
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Location: Waynesboro, Pa.
Car Model*: 65 Valiant 2Dr Post
If that is the case then big,heavier Slicks in the back should have the same affect, right? Just thinkin!

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 Post subject: Re: Front drag tires
PostPosted: Thu Sep 20, 2018 2:27 pm 
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Supercharged

Joined: Thu May 12, 2005 11:50 pm
Posts: 6128
Location: So California
Car Model*: 64 Plymouth Valiant
Yep

:lol:

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 Post subject: Re: Front drag tires
PostPosted: Thu Oct 04, 2018 7:30 am 
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SL6 Racer & Moderator
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Joined: Wed Jan 29, 2003 4:42 am
Posts: 6810
Location: Vine Grove, KY
Car Model*: More than I should have...
I picked up the rear wheels on the way to work this morning. I will need to run tubes now, but better than buying new wheels. I will weigh them and post here.

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 Post subject: Re: Front drag tires
PostPosted: Fri Oct 05, 2018 5:05 am 
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SL6 Racer & Moderator
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Joined: Wed Jan 29, 2003 4:42 am
Posts: 6810
Location: Vine Grove, KY
Car Model*: More than I should have...
These 15X12 rear wheels weigh 10# each. That’s compared to the steel 15X10 wheels I got from Speedway at 29.5# each. A significant weight savings there. I’m glad they could be saved.

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