Drag radial life/ max passes ?

Ed Wright · 11-10-2019, 07:24 PM

Guys I know that tried radials with a stick, never knew if it was going to hook. Faster when they did.

Tex013 · 11-15-2019, 05:53 PM

well finally got out to a T&T last night .
5 passes . It was warm low 90s down to low 80s with humidity in the teens .
Was hard to get car cool , especially with the 30 minute traffic jam on the freeway on way in . was around 190deg engine most passes
DA was 2840 down to 2250 between 6.17PM and 9.12PM
Any hoo .
First 2 passes was like oh my god , very slow sixty /et( 1.48/10.48) but mph was normal at 1/8 and 1/4 . OK new tyres .
PSI started @ 19 1/4 then 20 psi , shock settings as per normal
3rd pass 21psi and bigger burnout . 1.46/10.39/128.89 . That's better
4th pass 22psi same burnout . 1.46/10.40/128.37 . Tyre face looked better across
5th pass 22psi same burnout . 1.45/10.38/128.47 . Tyre face looks about right .
Track championship round next weekend .
Tyre feels good , I hope it will come in a little more , car has been 1.42/43.
I know I can dial to this .
Thanks for all the feedback/replies .

Tex

Tex013 · 11-20-2019, 04:38 PM

this is first or second pass

https://cacklingpipes.zenfolio.com/p513758923/edd3a9dde

4th pass

https://cacklingpipes.zenfolio.com/p513758923/edd3a9dd4

5th pass

https://cacklingpipes.zenfolio.com/p513758923/edd3a9dd8

Looking at tyre in 4th pass may need a little more pressure ? Anyone running around 23psi with the Hoosier ?

Tex

gsa612 · 11-20-2019, 05:52 PM

Keep adding air till the 60' drops,you may be able to run 24-25 psi...gsa612

Tex013 · 11-20-2019, 07:30 PM

thanks GSA ,
will try 23 in 2nd qual Saturday .
Have a 1/8 mile private club meeting the following week . More testing then with psi

Tex

Tex013 · 12-01-2019, 04:50 PM

Final instalment

Ran track championship round , 4 passes . dang red eliminator round 1 .
Ran on Saturday , 1/8th mile races , 8 passes .
Tyres seem happiest at 23psi , did try 24 for 2 passes no improvement .
This is my take on the runs .
The Hoosier is slower than the Pro Bracket Radial , 0.02 - 0.03 slower in sixty and all way down track . MPH is very similar .
If it spins , did twice , it does not recover as well as the PBR . One spin I expected due to poor burnout , car corkscrewed in burnout . They do need a reasonable burnout with my car . No just light haze them .
It is probably more sensitive to track prep . I am sure track champ rounds are better than T&T and private days where you wont see them drag the track during the day unless there is oil down .
The Hoosier has been really consistent .
Doubt I will race Dec final meeting , 4th place but cannot get into top 2 .
Will probably run in January national grp 1 meeting . But will also be HOT , but track prep will be at its best .
thanks again ,

Tex

Tex013 · 02-02-2020, 07:08 AM

Just a little update .
Ran 2 weeks ago at national grp 1 ihra event .
Weather was damp leading into event and on qualifying day .
Temp was 80s , GOW 100-108 . DA 2800-3500 or so
Friday track seemed to have minimal prep . Blew the tyres off first pass , 2,75 sixty , shifted into 2nd in the sixty
2nd pass sort of hooked , 1.745 sixty , 10.80 @126 pass . So lost 3/10s in sixty but got down track
Saturday was the same weather
Rnd1 took the win . 1.47 sixty . Dialed 10.50 went 10.53@117 on brakes .
Ok got something to dial against
Famous last words . Blew the tyres off again , in fact a mate said there was smoke off tyres like a burnout . The cherry didnt help
So i guess these Hoosiers arent liking my Plymouth , transbrake whatever ?
Wint be out for a few more weeks , work situation .
May have to try footbraking ?
Not sure about another $1200 on tyres .

Tex

11-10-2019, 07:24 PM	#1
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: Drag radial life/ max passes ? Guys I know that tried radials with a stick, never knew if it was going to hook. Faster when they did. __________________ Ed Wright 4156 SS/JA

11-15-2019, 05:53 PM	#2
Tex013 Junior Member Join Date: Oct 2012 Location: Sydney , Australia Posts: 97 Likes: 23 Liked 43 Times in 25 Posts	Re: Drag radial life/ max passes ? well finally got out to a T&T last night . 5 passes . It was warm low 90s down to low 80s with humidity in the teens . Was hard to get car cool , especially with the 30 minute traffic jam on the freeway on way in . was around 190deg engine most passes DA was 2840 down to 2250 between 6.17PM and 9.12PM Any hoo . First 2 passes was like oh my god , very slow sixty /et( 1.48/10.48) but mph was normal at 1/8 and 1/4 . OK new tyres . PSI started @ 19 1/4 then 20 psi , shock settings as per normal 3rd pass 21psi and bigger burnout . 1.46/10.39/128.89 . That's better 4th pass 22psi same burnout . 1.46/10.40/128.37 . Tyre face looked better across 5th pass 22psi same burnout . 1.45/10.38/128.47 . Tyre face looks about right . Track championship round next weekend . Tyre feels good , I hope it will come in a little more , car has been 1.42/43. I know I can dial to this . Thanks for all the feedback/replies . Tex

11-20-2019, 04:38 PM	#3
Tex013 Junior Member Join Date: Oct 2012 Location: Sydney , Australia Posts: 97 Likes: 23 Liked 43 Times in 25 Posts	Re: Drag radial life/ max passes ? this is first or second pass https://cacklingpipes.zenfolio.com/p513758923/edd3a9dde 4th pass https://cacklingpipes.zenfolio.com/p513758923/edd3a9dd4 5th pass https://cacklingpipes.zenfolio.com/p513758923/edd3a9dd8 Looking at tyre in 4th pass may need a little more pressure ? Anyone running around 23psi with the Hoosier ? Tex

11-20-2019, 05:52 PM	#4
gsa612 Senior Member Join Date: Jan 2008 Location: 100th Meridian Posts: 569 Likes: 116 Liked 280 Times in 139 Posts	Re: Drag radial life/ max passes ? Keep adding air till the 60' drops,you may be able to run 24-25 psi...gsa612

11-20-2019, 07:30 PM	#5
Tex013 Junior Member Join Date: Oct 2012 Location: Sydney , Australia Posts: 97 Likes: 23 Liked 43 Times in 25 Posts	Re: Drag radial life/ max passes ? thanks GSA , will try 23 in 2nd qual Saturday . Have a 1/8 mile private club meeting the following week . More testing then with psi Tex

12-01-2019, 04:50 PM	#6
Tex013 Junior Member Join Date: Oct 2012 Location: Sydney , Australia Posts: 97 Likes: 23 Liked 43 Times in 25 Posts	Re: Drag radial life/ max passes ? Final instalment Ran track championship round , 4 passes . dang red eliminator round 1 . Ran on Saturday , 1/8th mile races , 8 passes . Tyres seem happiest at 23psi , did try 24 for 2 passes no improvement . This is my take on the runs . The Hoosier is slower than the Pro Bracket Radial , 0.02 - 0.03 slower in sixty and all way down track . MPH is very similar . If it spins , did twice , it does not recover as well as the PBR . One spin I expected due to poor burnout , car corkscrewed in burnout . They do need a reasonable burnout with my car . No just light haze them . It is probably more sensitive to track prep . I am sure track champ rounds are better than T&T and private days where you wont see them drag the track during the day unless there is oil down . The Hoosier has been really consistent . Doubt I will race Dec final meeting , 4th place but cannot get into top 2 . Will probably run in January national grp 1 meeting . But will also be HOT , but track prep will be at its best . thanks again , Tex

02-02-2020, 07:08 AM	#7
Tex013 Junior Member Join Date: Oct 2012 Location: Sydney , Australia Posts: 97 Likes: 23 Liked 43 Times in 25 Posts	Re: Drag radial life/ max passes ? Just a little update . Ran 2 weeks ago at national grp 1 ihra event . Weather was damp leading into event and on qualifying day . Temp was 80s , GOW 100-108 . DA 2800-3500 or so Friday track seemed to have minimal prep . Blew the tyres off first pass , 2,75 sixty , shifted into 2nd in the sixty 2nd pass sort of hooked , 1.745 sixty , 10.80 @126 pass . So lost 3/10s in sixty but got down track Saturday was the same weather Rnd1 took the win . 1.47 sixty . Dialed 10.50 went 10.53@117 on brakes . Ok got something to dial against Famous last words . Blew the tyres off again , in fact a mate said there was smoke off tyres like a burnout . The cherry didnt help So i guess these Hoosiers arent liking my Plymouth , transbrake whatever ? Wint be out for a few more weeks , work situation . May have to try footbraking ? Not sure about another $1200 on tyres . Tex