2018 firehawk chassis

Treydye08

New member
Im looking for setup numbers for a 2018 firehawk. Driver is 225lbs will be running in heavy boxstock predator class. Track is 1/4 mile momentum track with little to no banking. Thanks
 

Treydye08

New member
Outside to outside is 470'
Inside to inside turns is 390'
Outside to outside straights 270'
Inside to inside straights 190'

this is per the EP speedwayFacebook page
 
Make sure seat is mounted properly and not in a bind, top rear of seat 9" off top of axle, set rear hub spacing with tires on the kart, RR just so the sidewall bulge of the tires clears the frame by 1/8 ", LR 3/4 " from inside edge of wheel to frame, stagger tires at 1 1/2 " front stagger, 7/8" rear set air at 7 lb left 8 lb rights, then scale it with driver in the seat. 46 % to 46.5 % nose, 59 % left, 64 % cross, 2.75 RF neg camber, .25 LF pos camber, straight up on toe, stock caster RF in front hole.
Stock Predator is all about momentum and roll speed, use higher air pressure as much as you can without sliding, Gearing is really important as well don't start gear bound and chase gearing forever, If you have no proven source for the track gearing start it like 20/56 don't turn it over 5000 rpm, test the waters between 4800 rpm, and 5000 rpm. Heads up If it has a slight push with those numbers lower RF neg camber to 2.5 first before listening to most and pulling cross, on the flip side if it's handling real well and has good rotation, decrease rear stagger to 3/4" and increase RF neg camber to closer 3 to help with roll speed.
Good Luck !!
 

Treydye08

New member
Make sure seat is mounted properly and not in a bind, top rear of seat 9" off top of axle, set rear hub spacing with tires on the kart, RR just so the sidewall bulge of the tires clears the frame by 1/8 ", LR 3/4 " from inside edge of wheel to frame, stagger tires at 1 1/2 " front stagger, 7/8" rear set air at 7 lb left 8 lb rights, then scale it with driver in the seat. 46 % to 46.5 % nose, 59 % left, 64 % cross, 2.75 RF neg camber, .25 LF pos camber, straight up on toe, stock caster RF in front hole.
Stock Predator is all about momentum and roll speed, use higher air pressure as much as you can without sliding, Gearing is really important as well don't start gear bound and chase gearing forever, If you have no proven source for the track gearing start it like 20/56 don't turn it over 5000 rpm, test the waters between 4800 rpm, and 5000 rpm. Heads up If it has a slight push with those numbers lower RF neg camber to 2.5 first before listening to most and pulling cross, on the flip side if it's handling real well and has good rotation, decrease rear stagger to 3/4" and increase RF neg camber to closer 3 to help with roll speed.
Good Luck !!
Our predator rules let us use cl1 or cl2 cams, 10.8 red springs and a big pipe. Would our target rpm still be around 5000 or more ? Running the hemi
 
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