FrontEngineDragsters.Org Forum
Drag Racing Discussions => Front Engine Dragsters => Topic started by: Supercat on July 20, 2014, 07:24:07 AM
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We need to get new tires in the next few weeks.
The car is a 200" Fed with about 1000hp and 800+ ft/lb. naturally aspirated,methanol.
Weight 1760-1780 with driver.
5200 stall PG 176 first gear
3.89 rear gear Ford 9"
wheels are 10.5x15" presently but we are thinking to go to 11.5"x15"
We have been using the Hoosier co9 compound 33x12x15 mounted on a 10.5 wheel, about 4 yrs old.
What are some recommendations from the group and why you like them...
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If what you have works, why change? I have been running that combo(except Goodyears)for the last 18 years
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If what you have works, why change? I have been running that combo(except Goodyears)for the last 18 years
going to have to change next time though probably since Goodyear discontinued most of there drag slick line, I know I am running my tires a year longer than normal since they did this
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Supercat I would think that the 12x33 Hoosier should be just about right for your combo . There are not a lot of choices out there that will work on a FED . Good Year discontinued the 1288 12x33 tire and the 12x31's also . I put a set of the Hoosiers on mine last year and thought they were a pretty good tire . The only thing I did not like about them is that they shake badly at the end of a burnout !
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Are Mickey Thompson (ET Drag series) good drag tires?
http://www.mickeythompsontires.com/strip.php?item=ETDrag
I have Mickey Thompson ET Drag 3068W 31.0/10.5-15W M5 on my FED, but I'm too much of a novice to say anything about them.
The thing I can say is that they don't leak! (yes, they're screwed)
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My only info on the tires (goodyears) is that the Comp tires only come in straight increments and are to be used in our type of cars. Tires that come in 1/2" increments are more for door cars and their design does not allow one to Get up on the tire and they dont grow very much.
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Ricardo As Bruce said that tire is made for high horsepower bodied cars . They have a stiff sidewall . I do have a friend who has run them on a Smallblock rear engine car and loves them ! If you already have them why not try them . You will never go wrong by screwing them . Bill
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Bill,
You said you had them on last year.What did you go with this year? I have a set of Hoosiers right now that are used.Have bad feeling I am not going to like them for same reason you stated.I have had cpl others say same thing. Going to try them anyway,heck will not be first $150 I threw away.
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Chris if you can get around that shake problem they are not a bad tire .
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needless to say have not tried them out. From comments I have gotten I am almost expecting one of those brain rattling tire shaking deals from my TA/D. You know you get out of car still half blind ,head about to explode.
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We have yet to have a shake issue with them. I have heard a from a few people about it but as I said nothing yet. We do a real nice burnout so the tires are plenty hot ;D.
Should we put the tires on the 1" wider wheels that we have? We do experience a loose back-end at times like the tires are flat. I was told we should be using a wheel that is close to the same width as the tire. Any thoughts on that issue.
Anyone near National trail dragstrip in Ohio? We will be there for a few days running the car at the end of the month.
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I have been running 33x12-15 M and H RaceMasters on a 10" wheel for about the last 4 yrs and have been very satisfied. They don't show up on their website, but they are a 15" version of their 16" nostalgia topfuel tire. Their part # is MHR-69.
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john we are about 1.5hr away
steve m.
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Wow, Supercat, I'm impressed, 1,000 hp on a NA alky FED, the only JrFuel cars I know that make that kind of power is Scott Parks, and Brian Darcy. And they run 6.70's. What size is your motor and are you running nitro ? Another question, why does your car/ driver weigh 1760-1780. Our JrFueler weighs 1440 with an all iron motor and driver, where is your extra 300 lbs ?
Ok, back to your question, most fast JF cars are running 12" wide wheels, because anything narrower it gets loose at start or after the shift to half track. We ran 10" rims for years, then found out we needed more traction at Bakersfield when sun went down and the track got loose. Then as we made more power we ran the 11" [ nite time Bakersfield] wheels were need more often, so I put together a set of our 31x12x15 GoodYears on 12" rims, which is what we run most of the time now in JrFuel "B". Downside to 12" rims is the tires will not grow as much so we get a little slower top speed [ 187 mph instead of 189]. Most slick guys say don't go over/under 1" difference on the rims than tire width. But I know a number of racers are running 12" tires on 10" rims, just lower HP cars.
I just talked to a RED Comp racer this week-end while we were racing Comp at the Div 7 race in Sonoma, and I sold him a pair of used 33x12x15 GoodYears because his 33x12x15 Hoosiers get loose at half track and they don't grow as much as the GY's. But the Hoosiers have softer compound rubber.
I have a set of 33x10.5 x15 M/T but I have heard they need to be on 14" wide rims to work. Too bad our rules limit us to a max of 12" rims, plus they are REAL heavy, like 45 lbs on wheels EACH. Our 31x12x15 GY's weigh 26 lbs each, mounted. It takes more power to rotate that extra 20 lbs each.
Anyway that's my 2 cents.
Have Fun, Jon Hansen, Hayden Wheels
BTW we run allot of 7.0's using a 8700 rpm converter, and 4.88 rear gears and 1.68 first gear PG
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Supercat When I ran that tire I had them on a 12 inch rim and they worked pretty good . My 60 ft's and et's were comparable with the 1288 Good Year's . I think that they need a little more air than the GoodYears . Around 7lbs seemed to work .
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Steve we will be at National trail on Friday and Saturday August 1st and 2nd.
We will be the only dragster at the Event so it should be fun ;D.
Give me a shout if you feel like heading over.
Jon I am running a 462" iron block. Block was run on the dyno on gas at 32 degrees with a carb. just under 950 hp and 790+ ft/lb.
We were told the numbers would increase with the switch to methanol. We can run the car on a mellow 20-25% nitro but that will only be if I really need to to break through any et/mph barriers. We have the parts and the tune up in the trailer if needed ;).
As for the weight...... We scaled the car at Vegas and that was the weight ???.
We run an on-board 16volt battery, twin fire bottles in the nose, a snout full of lead.(many issues with the car carrying the front down the track.) We have been playing around with different engines in the car, so we have made a lot of the brackets and mounts in mild steel. We are just seeing what works where and then we will make a lot of the parts in aluminum or tube.
Our chassis is also capable of running N-TF we have a 6.0 sticker on the car now.
Before adding the lead in the nose...when we were on a good pass the car would lift the front end and then you shift to second and the soft feel in the tires was a little unsettling. We will try to get out to the track on Friday night.
Thanks for the info everyone. I am leaning towards using the 11.5 wheels with another new set of Hoosiers. That seems like it should solve part of the soft feel at the shift.
We have found the tire likes between 7-8 lbs. depending on the track