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Messages - JrFuel Hayden

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1
Roo Man's Room / Re: gaining ground clearance.
« on: January 24, 2021, 10:57:01 PM »
The easy way is taller front and rear tires , One of our JF teams has a John Worm chassis that also had a clearance issue , motor sits low in the chassis, like the pan is 5-6" below the lower frame rail. He now runs 33x10.5x15 MT , but I think the MH 33x12x15 would work better [ 101" roll-out] and he runs Hayden 18" front wheels , 250x18[ 23.75" ]tall rib tires, I also have 275x18 [ 24.25" tall] and 300x18 [25"] tall] . I don't like the look of the 300x18, it's a tire I sell to "T" bucket wheels. Or you can change the angle of the rear end, like one of John Worm's guys did, and change the front axle.
Your combo might like the 33x12 MH, we have a few JF teams running them and some blown BBC and SBC guys . Or you could step-up more and run what the fast A/F guys do run the M/T bubba 16x16 tires , the fast guys are runnning in the 5's, on injected nitro and the fast blown alky are running 6.00's on the bubba's
Let me know if you want more help.
Jon 805-444-4489, cell   

2
Front Engine Dragsters / Re: Any JE Pistonís dealers here?
« on: January 24, 2021, 10:18:30 PM »
Bob McKray Performance 949-458-7087, in Mission Viejo, Ca is a JE dealer/ engine builder , tuner [ built and tunes Don Enriquez Heritage JrFueler and won 6 championships] Bob before he started his own engine & head building biz work with Gene Adams and Enriquez at Hilborn, call him , I'm sure he can do more than just get your pistons, he's a real smart guy.
Good Luck with your project ! 

3
Roo Man's Room / Re: chassis top rail has bowed outwards
« on: November 30, 2020, 03:00:43 PM »
Our Heritage JF chassis had the top rail bow out in front of the engine so we just added a couple of cross bars , helped make the chassis stiffer and helped with the tire shake.
We also added another 20 lbs to the front to control the wheelies better and we run our wheelie bar about 1 1/2" off the track. 

4
Front Engine Dragsters / Re: New to the page
« on: November 30, 2020, 02:29:54 PM »
a couple of things [1] a freind of mine bought a used Parks FED JR 225" put a LS motor on race gas, single card, hyd lifters and won 3 Heritage NE-1 [ 760 bracket] Championships . At least one time that I know of he raced with out his Dad crew member, because his Dad was off helping his other son rac a Honda powered altered in Comp at Sonoma . so Dustin just drove his dragster to the staging lanes after driving the rail out of his trailer , raced then drove to the ET booth to get his ET slip , drove back to his pit, drove it back into the trailer all by himself AND won the event . All with a flywheel started and on board batt. Again winning with no crew member.
[2] we have had a Heritage JrFuel racer run with a John Worm , CenPen 180" chassis and a all iron SBC injected alky running in JF "C" [ 7.14[ handi-cap] but his engine sit low in the chassis [ stock SBC oil pan] so he runs 18" front wheels and 33" tall slicks to get more ground clearance.  Another NE-2 racer that raced with a CenPen car , but he had John Worm angle the rear-end so the engine was higher.
Jon, Hayden Wheels 800-624-3803

5
Dan Dishon's Transmission Den / Re: ATi vs Reid PG case
« on: October 12, 2020, 11:06:12 PM »
In our jrfuel car we use a Reed case because we race heads up .05 pro tree NHRA Heritage and NHRA Comp Elim .06 full tree , so we can adjust [ slow down] the release of the brake.
We just have to get it creditied, every 3 or 5 years.

6
Jon's Wheel House / Re: tire sudder
« on: October 03, 2020, 12:18:29 AM »
one problem may be with the 32x12x15 Hoosier , when Goodyear stopped making for inventory a number of part numbers , one was the designed for JrFuel racers 31x12x15 light weight [ 26lbs] tire and since the JF rules and A/ND & B/ND Comp rules are 12" max wide tires , I called all the slick makers to see what they have. Hoosier said they had 31, 32and 33 tall 12" tires, BUT the 32 tall may not work for 2 speed dragsters , because Hoosier mad that tire with a softer compound for heavy door cars where they deadhook, shift, deadhook, shift, deadhook, not getting some tire speed like FED to keep the egine RPM in the power range. Also tire shake seams to come with not enough power or too much bite. Which a couple of slick makes agree that the trend of tracks spraying too much VHT, so that makes the tires dead hook and shake. Don Enriquez engine builder/tuner asked one ot our Heritage tracks to not spray any more VHT before JF races, it worked and A/F liked it better too.
One of the quickest running A/ND & B/ND Comp cars runs a 29x10.5x15 MT and just ran a 6.79 in St Luis. On our JrFuel car I'm about to try M&H 30.5x10.5[ 11.25] x15 on 12" rims next season. M/T, Hoosier, M&H all have stiffer sidewalls and are at least 32 lbs . Rotating weight takes more power to turn.
You could try lower tire pressure , it help getting more tire speed. With our Goodyears we have run as low as 4 3/4 lb on 12" rims. We started out on 10" rims then when we added power we needed more bite , so 11" then 12".
I hope this helps.     

7
Jon's Wheel House / Re: How to determine what spindles I have
« on: September 17, 2020, 04:10:46 PM »
On the nut end dia .625" [5/8"] is Anglia, and .750" [3/4"] is Early Ford, the lenght are different too.
BTW as per NHRA wire spoke wheels are not allowed on alters or dragsters that over 1800 lbs [ no driver]
Jon Hansen, Hayden ent, 800-624-3803

8
Jon's Wheel House / Re: durometer reading on tires
« on: July 08, 2020, 12:31:13 AM »
My GY guy has suggested replacing the tires when the 60' times change with no combination change , when I asked how many runs or what age I should change to new.

9
Front Engine Dragsters / Re: tire speed vs low gear ratio
« on: June 20, 2020, 10:47:43 PM »
WideOpen; the reason I suggested a 1.80 gear was he had trouble with tire shake so I thought the 1.80 gear would help getting the tire up to speed at the hit. More gear is a torque multiplier , so it multipies the HP, again more power helps with tire shake. Another option is to go with a lower [ bigger number] rear gear.
when I 1'st started JF racing I too met that "old guy from Kansas, he turned me onto a 1.68 1'st gear to slow up the tire speed some , now most of the jF guys are running 1.68 or 1.69 gear with one team running a 1.54.
Jon

10
Jon's Wheel House / Re: durometer reading on tires
« on: June 20, 2020, 12:34:32 AM »
I have used a durometer when I 1'st started racing JF but that was because we were using a tire softener treatment , which we have not used in about 16 years since the tracks are doing a better job of track prep, more VHT and track dragging . Also slick suppiers don't offer much options of compounds, unless you go to another size tire. I think my durometer reading were hig 40's -low 50's.
I can check my current tires if that will help you.
Jon 

11
Front Engine Dragsters / Re: Tire ShAkE
« on: June 20, 2020, 12:09:40 AM »
My experience is tire shake is caused by not enough power or too much traction . With our Heritage jrfuler, when we have tire shake we lower the tire pressure, will usually run around 6 # but as low as 5 1/2 # . By lowering the pressure it cups in the center so the edges are doing more of the traction . You can check that by using your temp gun after a run at the turn-off and measure the temps all across the tire, and you'll see higher temps on the outer edges.
Or you could just up the power by adding more nitro % , or go to a smaller tire JrFuel A cars run about 1100-1200 hp and 6.80's to 6.70's and run either 31x12x15 [ GY]or 33x12x15 [ M&H], and run as low as 4 3/4 #  Another example is the Heritage A/F guys have found going to the N/TF M/T Bubba tire[ 33x12x16, stiff sidewall]  has solved their tire shake going away from 33x14x15 GY.
I think since the tracks are preping with more VHT = more traction=more tire shake , it's harder to keep the tire speed up so it does not pull the motor down out of it's power range.
You could try more rear gear and or 1.80 1'st gear. I think only super comp want too much traction with their delay boxes.
I'm running the latest batch of GY 31x12x15 thru Hayden wheels, and 33x12x15 MH on bad tracks and will try 30.5x10.5 [ 11 1/2] x15 MH next.
Good Luck , let us know what works for you.
Jon

12
Wanted to sell / Re: Single Butterfly Injection System
« on: March 29, 2020, 11:57:38 PM »
I have a set-up of Hilborn 4 port electric fuel injection for a blower, complete  used just twice good for 650 HP, new cost $8k on Ebay now for $3900
Jon Hansen 805-444-4489, call for photos and more info.

13
Jon's Wheel House / Re: D2585 Goodyear 31x12x15, and D1288 GY 33x12x15
« on: March 29, 2020, 11:24:58 PM »
Ya, I agree with French store in cool dry dark no electric motors , place. Best wraped in plastic.
We are racing GY's made in 2016, changed at 2020 MM , just because GY just made a new batch.
GY suggests replacing slicks when 60' times get worse with no combo changes. 
Jon

14
Jon's Wheel House / Re: D2585 Goodyear 31x12x15, and D1288 GY 33x12x15
« on: March 26, 2020, 12:26:57 PM »
I have D2585 GoodYear 31x12x15 D-3 now , call if anyone wants any.
I'm now taking pre-orders for D1288, GY 33x12x15
Stay healthy out there !

15
Front Engine Dragsters / Re: Finally taking the digger out on Sunday
« on: March 18, 2020, 12:07:07 AM »
You just need more seat time you'll get use to it. In my dual engine Top Gas dragster my eye line was in the middle of the blowers, a 6 foot tall guy could stand at my front axle and I could not see any part of him. Just drove in perspective so much on each side
Our driver complained at first trying to look around the offset 20 amp MSD in our Heritage JrFuel, but as he had more time driving he just is  getting use to it.
i don't like bar stool drivers , don't look right. 

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