Previous Thread
Next Thread
Print Thread
Page 2 of 3 1 2 3
Re: Drag Radial launch question with Vids [Re: TheOtherDodge] #3098184
11/29/22 07:26 PM
11/29/22 07:26 PM
Joined: Feb 2022
Posts: 1,148
Nor here, Nor there
D
Dart 500 Offline
super stock
Dart 500  Offline
super stock
D

Joined: Feb 2022
Posts: 1,148
Nor here, Nor there
An easy fix...?

Lift-Weights.jpg
Re: Drag Radial launch question with Vids [Re: Dart 500] #3098292
11/30/22 09:25 AM
11/30/22 09:25 AM
Joined: Jan 2003
Posts: 4,003
Shelby Twp. Mi
HardcoreB Offline
master
HardcoreB  Offline
master

Joined: Jan 2003
Posts: 4,003
Shelby Twp. Mi
Nice videos. It's really spinning which makes me wonder how much you'd gain making it work. What are the incrementals?

Re: Drag Radial launch question with Vids [Re: HardcoreB] #3098296
11/30/22 09:34 AM
11/30/22 09:34 AM
Joined: Jan 2003
Posts: 8,156
Plymouth, MI
Blusmbl Offline
master
Blusmbl  Offline
master

Joined: Jan 2003
Posts: 8,156
Plymouth, MI
Awesome truck, by the way! I should've mentioned that first. Totally agree about the radials, it makes them so much more confidence inspiring to drive. Only drawback is they don't work as well for no prep type stuff but it seems people are getting them to work on those surfaces now too. The guy who won the small tire class at Roadkill nights this year was on a radial!


'18 Ford Raptor, random motorcycles, 1968 Plymouth Fury III - 11.37 @ 118
Re: Drag Radial launch question with Vids [Re: HardcoreB] #3098325
11/30/22 11:03 AM
11/30/22 11:03 AM
Joined: Feb 2003
Posts: 4,953
Houston, Texas
TheOtherDodge Offline OP
master
TheOtherDodge  Offline OP
master

Joined: Feb 2003
Posts: 4,953
Houston, Texas
Originally Posted by HardcoreB
Nice videos. It's really spinning which makes me wonder how much you'd gain making it work. What are the incrementals?


A couple of weeks ago in ok air (78 degrees, 55% humidity) on 14.5 lbs of boost it went: 1.44, 6.29@109.96, 9.91@134.43. It hooked but I was leaving on only 3,200 rpms (4.5 lbs of boost). On the big end I was experiencing a "slight stammer" which turned out to be spark blow out. I resolved that but these latest passes were only on an 1/8 mile track and I was ok with that since I wanted to work on my 60fts anyway.

The biggest limitations are the small cam (.220/.520) and "cheap" turbo. But then if I upgrade those 2 things, my stock block becomes the limitation! "One Day", I will move to the Gen III Hemi platform.

Re: Drag Radial launch question with Vids [Re: Blusmbl] #3098327
11/30/22 11:04 AM
11/30/22 11:04 AM
Joined: Feb 2003
Posts: 4,953
Houston, Texas
TheOtherDodge Offline OP
master
TheOtherDodge  Offline OP
master

Joined: Feb 2003
Posts: 4,953
Houston, Texas
Originally Posted by Blusmbl
Awesome truck, by the way! I should've mentioned that first. Totally agree about the radials, it makes them so much more confidence inspiring to drive. Only drawback is they don't work as well for no prep type stuff but it seems people are getting them to work on those surfaces now too. The guy who won the small tire class at Roadkill nights this year was on a radial!


Once you go Radials, you never go back!

Re: Drag Radial launch question with Vids [Re: TheOtherDodge] #3098328
11/30/22 11:12 AM
11/30/22 11:12 AM
Joined: Dec 2021
Posts: 1,072
Loudoun County, VA
Brad_Haak Offline
super stock
Brad_Haak  Offline
super stock

Joined: Dec 2021
Posts: 1,072
Loudoun County, VA
I'm interested in seeing how the ET Street R compares to the original ET Street Radial on my '73. From what I've read, the current S/S is basically the original version w/ additional grooves for water channeling. The "R" is supposed to be the street-legal version of the "Pro" with a different sidewall construction. I still have a couple of new sets of the original 275/60s to burn through first.

Last edited by Brad_Haak; 11/30/22 11:13 AM.

2021 Challenger 6.4L Scat Pack 1320 (2022)
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
wheels, tires, air filter: 1.714, 11.833 at 115.80 (DA 310 ft)

1973 Challenger 452 ci street/strip (2008)
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
Re: Drag Radial launch question with Vids [Re: Brad_Haak] #3098332
11/30/22 11:23 AM
11/30/22 11:23 AM
Joined: Feb 2003
Posts: 4,953
Houston, Texas
TheOtherDodge Offline OP
master
TheOtherDodge  Offline OP
master

Joined: Feb 2003
Posts: 4,953
Houston, Texas
Originally Posted by Brad_Haak
I'm interested in seeing how the ET Street R compares to the original ET Street Radial on my '73. From what I've read, the current S/S is basically the original version w/ additional grooves for water channeling. The "R" is supposed to be the street-legal version of the "Pro" with a different sidewall construction. I still have a couple of new sets of the original 275/60s to burn through first.


Brad, my understanding is that the Pro have the "best" compound. And since the person who does most of the tuning (Eric Stubbs) runs 4.0's on 275 R's, I just copied him! Once I blow through this set which don't have a lot of passes, he wants me to go to a smaller tire.

This was Eric the same day I went:

https://www.facebook.com/100000100240304/videos/875890863412940/

Re: Drag Radial launch question with Vids [Re: TheOtherDodge] #3098336
11/30/22 11:37 AM
11/30/22 11:37 AM
Joined: Jan 2003
Posts: 8,156
Plymouth, MI
Blusmbl Offline
master
Blusmbl  Offline
master

Joined: Jan 2003
Posts: 8,156
Plymouth, MI
Originally Posted by TheOtherDodge

Brad, my understanding is that the Pro have the "best" compound.


That's my understanding too. The SS and R both have the same compound, but the R has a softer sidewall. The Pro is better than both, and is technically street legal, but has no rain grooves at all.


'18 Ford Raptor, random motorcycles, 1968 Plymouth Fury III - 11.37 @ 118
Re: Drag Radial launch question with Vids [Re: Blusmbl] #3098337
11/30/22 11:42 AM
11/30/22 11:42 AM
Joined: Dec 2021
Posts: 1,072
Loudoun County, VA
Brad_Haak Offline
super stock
Brad_Haak  Offline
super stock

Joined: Dec 2021
Posts: 1,072
Loudoun County, VA
I had to go dig this up, since I couldn't remember where the differences between the various ET Street versions are: https://www.streetmusclemag.com/news/inside-mts-new-drag-radial-lineup-pro-bracket-et-street-ss-r/


2021 Challenger 6.4L Scat Pack 1320 (2022)
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
wheels, tires, air filter: 1.714, 11.833 at 115.80 (DA 310 ft)

1973 Challenger 452 ci street/strip (2008)
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
Re: Drag Radial launch question with Vids [Re: Blusmbl] #3098340
11/30/22 11:59 AM
11/30/22 11:59 AM
Joined: Dec 2013
Posts: 4,651
Wichita
G
GY3 Offline
master
GY3  Offline
master
G

Joined: Dec 2013
Posts: 4,651
Wichita
Originally Posted by Blusmbl
Originally Posted by TheOtherDodge

Brad, my understanding is that the Pro have the "best" compound.


That's my understanding too. The SS and R both have the same compound, but the R has a softer sidewall. The Pro is better than both, and is technically street legal, but has no rain grooves at all.


Oh, c'mon, it has TWO, TWO "rain grooves". grin

Perfectly fine for street driving.


'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.

Re: Drag Radial launch question with Vids [Re: Tig] #3098350
11/30/22 12:10 PM
11/30/22 12:10 PM
Joined: Oct 2015
Posts: 570
UK
rb446 Offline
mopar
rb446  Offline
mopar

Joined: Oct 2015
Posts: 570
UK
Originally Posted by Tig
Originally Posted by TheOtherDodge


Tig : You need more help than I do, but for a different issue!



Very True, we are into 5 figures now repairing stuff from several big wheelstands blush, the car isn't even that quick grin I don't know if its a Caltrac thing, but we have tried tightening the front up and / or limiting front rise to stop the wheelstand. Always ends up knocking the tyres off or rattling them some.
We can spend most of a qualifying day chasing our tail if we get it wrong. We cant take any more rise (anti squat) out of the car mechanically, it just seems to need to have a loose front and anti squat in the rear to run it's best. shruggy We're going to have to get a handle on it quick with potentially an extra 700 hp whistling (bigger engine + 500 hp N2O dual fogger). IF we ever bust out of the 8.50 cage cert, we will make the rear more adjustable for ride height next time round but keep the caltracs and small tyres. up


From what I've been reading you need more anti squat not take it out, the more rise you have the more it will tend to push the car forward and keep the front down. fwiw... Same for Duncans 622 Hemi@1000hp+, he tightened the fronts to max and it wasn't enough so he's just staying out of the throttle some to get it to go down from what I see. Try looking at Kevin Wilson on u-tube, the chassis man, could help you some if you sift out the elementary stuff.

Last edited by rb446; 11/30/22 01:02 PM.

1969 'Cuda 446ci, best 9.96@133.9 in 1990
1971 340 'Cuda, best 11.01@122.8 in 1987
Re: Drag Radial launch question with Vids [Re: rb446] #3098406
11/30/22 03:23 PM
11/30/22 03:23 PM
Joined: Jan 2003
Posts: 2,902
A shed in England
Tig Offline
master
Tig  Offline
master

Joined: Jan 2003
Posts: 2,902
A shed in England
Originally Posted by rb446

From what I've been reading you need more anti squat not take it out, the more rise you have the more it will tend to push the car forward and keep the front down. fwiw... Same for Duncans 622 Hemi@1000hp+, he tightened the fronts to max and it wasn't enough so he's just staying out of the throttle some to get it to go down from what I see. Try looking at Kevin Wilson on u-tube, the chassis man, could help you some if you sift out the elementary stuff.


Agree - to a point - there is too much anti squat un-intentionally designed into the car and not enough weight over the front, it's just the way it's ended up. Even on the least aggressive rear settings mechanically, it will kill the sidewalls in a bias ply slick, way before the tread is worn out.
It appears current thinking is more weight over the front and plenty of rise for radials, the no prep radial set up you tube vids are quite interesting. I've posted some you tube stuff by Kevin some while ago on my facebook page, I even think you may have commented on it grin


'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials.
9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge.
RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
Re: Drag Radial launch question with Vids [Re: Tig] #3098412
11/30/22 03:49 PM
11/30/22 03:49 PM
Joined: Oct 2015
Posts: 570
UK
rb446 Offline
mopar
rb446  Offline
mopar

Joined: Oct 2015
Posts: 570
UK
the no prep radial set up you tube vids are quite interesting.

Yeah was watching one myself where the back of one of those cars rises up some way down track presumably when the power really comes on to stop it going airborn. Hope I'm there to see you runnning1500hp in that car. I know the l/spring Digby Dart has gone 4.24@181 on springs but thats a whole different ball game.

Last edited by rb446; 11/30/22 03:51 PM.

1969 'Cuda 446ci, best 9.96@133.9 in 1990
1971 340 'Cuda, best 11.01@122.8 in 1987
Re: Drag Radial launch question with Vids [Re: GY3] #3098436
11/30/22 04:51 PM
11/30/22 04:51 PM
Joined: Jan 2003
Posts: 8,156
Plymouth, MI
Blusmbl Offline
master
Blusmbl  Offline
master

Joined: Jan 2003
Posts: 8,156
Plymouth, MI
Originally Posted by GY3

Oh, c'mon, it has TWO, TWO "rain grooves". grin


Totally legit, lol

mt-et-street-radial-pro-3q-lf-300dpi-shadow-clipped.png

'18 Ford Raptor, random motorcycles, 1968 Plymouth Fury III - 11.37 @ 118
Re: Drag Radial launch question with Vids [Re: Blusmbl] #3098462
11/30/22 06:02 PM
11/30/22 06:02 PM
Joined: Jan 2003
Posts: 8,005
Tulsa OK
Bad340fish Offline
master
Bad340fish  Offline
master

Joined: Jan 2003
Posts: 8,005
Tulsa OK
So at drag week this year I wandered over to the Mickey Thompson tent when I was wandering around waiting for things to happen. I asked them why the 275 Pro was directional, he then proceeded to tell me that it is because the rain grooves are only designed to push water out one direction lol. So I assume they Probably up the safe rain driving speed from 9 mph to 11 over a standard slick.

I really like the radials though, they wear good, they hold the same air pressure for MONTHS and the car drives soooo nice.

Last edited by Bad340fish; 11/30/22 06:03 PM.

68 Barracuda Formula S 340
87 "Chrysler" Conquest
Re: Drag Radial launch question with Vids [Re: Bad340fish] #3098492
11/30/22 07:37 PM
11/30/22 07:37 PM
Joined: Oct 2003
Posts: 11,678
W. Kentucky
justinp61 Offline
I Live Here
justinp61  Offline
I Live Here

Joined: Oct 2003
Posts: 11,678
W. Kentucky
Originally Posted by Bad340fish
So at drag week this year I wandered over to the Mickey Thompson tent when I was wandering around waiting for things to happen. I asked them why the 275 Pro was directional, he then proceeded to tell me that it is because the rain grooves are only designed to push water out one direction lol. So I assume they Probably up the safe rain driving speed from 9 mph to 11 over a standard slick.

I really like the radials though, they wear good, they hold the same air pressure for MONTHS and the car drives soooo nice.


grin

I drove my Dart to work one day and it rained, when I left it wasn't raining but the roads were still wet. I run the ET Street R's with the two full groves around them, needless to say it was a white knuckle 35mph ride home. I never drove it again if there was a chance of rain. LOL

Re: Drag Radial launch question with Vids [Re: justinp61] #3098584
12/01/22 07:45 AM
12/01/22 07:45 AM
Joined: Nov 2003
Posts: 1,825
NW Indiana
F
fbs63 Offline
top fuel
fbs63  Offline
top fuel
F

Joined: Nov 2003
Posts: 1,825
NW Indiana
Gotta drive it like a sprint car!

Re: Drag Radial launch question with Vids [Re: fbs63] #3098591
12/01/22 08:49 AM
12/01/22 08:49 AM
Joined: Dec 2021
Posts: 1,072
Loudoun County, VA
Brad_Haak Offline
super stock
Brad_Haak  Offline
super stock

Joined: Dec 2021
Posts: 1,072
Loudoun County, VA
One of these is not like the others... it's the one that's not legal for street use

Screenshot 2022-12-01 at 7.47.19 AM.png

2021 Challenger 6.4L Scat Pack 1320 (2022)
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
wheels, tires, air filter: 1.714, 11.833 at 115.80 (DA 310 ft)

1973 Challenger 452 ci street/strip (2008)
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
Re: Drag Radial launch question with Vids [Re: Brad_Haak] #3098598
12/01/22 10:00 AM
12/01/22 10:00 AM
Joined: Jan 2003
Posts: 8,005
Tulsa OK
Bad340fish Offline
master
Bad340fish  Offline
master

Joined: Jan 2003
Posts: 8,005
Tulsa OK
The 275 Pro Carries a DOT Number. It is the most illegal looking one of that bunch.

I actually like the 275 Pro a little better than the pro bracket radial. They hold the rim better for some reason and I believe the sidewall is a little stiffer and my car seems to like that.


68 Barracuda Formula S 340
87 "Chrysler" Conquest
Re: Drag Radial launch question with Vids [Re: Brad_Haak] #3098603
12/01/22 10:05 AM
12/01/22 10:05 AM
Joined: Jan 2003
Posts: 13,319
Marion, South Carolina [><]
an8sec70cuda Offline
I Live Here
an8sec70cuda  Offline
I Live Here

Joined: Jan 2003
Posts: 13,319
Marion, South Carolina [><]
I was gonna say the ET Street PRO isn't legal. It has the DOT stamp on it, but says on the sidewall not for highway use.

Brad...the ET Street R seems to be better than the old style ET Street. I got the new tire 2 years ago and have been really happy w/ them.
I use the 295-65. The 275-60 looks stupid on my car. I'm used to the look of the bigger tire and the stance of the car doesn't suit the short tire very well. The 315-60 doesn't fit on mine.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
Page 2 of 3 1 2 3






Powered by UBB.threads™ PHP Forum Software 7.7.1