Drag Racing Discussions > Front Engine Dragsters

Battery Placement on a FED

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codysisson:
I have read the NHRA rules on battery placement however I still cannot determine if I can put the battery behind the seat  in a metal box. I have a chute pack body on a FED. The rules say if the battery is moved to the rear, you must build a firewall or a sealed box. Can anyone clarify this for me? I am using a sealed AGM small format battery.

Thank you,
Cody

wideopen231:
With chute body you m ay not really need the battery that far back. Body will add lot of rear weight anyway and part of that will be hanging behind you.. i also have chute body and know its heavier then I thought,which is why I have full chute and short body's for car. I have two location for battery.One just a head of motor and behind tank at front,could not fit into nose or I would have. IMO its one of the biggest balance pieces on the car. 

  I will satrt out with mine in front and if car does not pull the wheels any I will move to front of motor.Whi ch I like best as it means less cable which means less weight plus better power to starter with short cable.
If after dozen or so runs and I fill motor is tuned out and the car is still not  pulling front wheels cpl inches I will look at moving it back.With my fat 215 lb butt sitting behind axle I do not think it will be issue.
  If you are running wheelie bars remember thats more weight out back.If running battery probably 35 plus pounds in rear  with chute body and anything except skeleton driver I would have wheelie bars.

 Roo man would be good  bet for some tips on the rules and weight distribution.

PSweeney:
I had the same dilema.  I considered putting it between / under my seatpan / axle as theres a void there where the battery could be housed in a cradle and dropped out from below.  After fooling about trying to make a clean set up,  I decided I needed to have it up front but could not stomach seeing it in the open rails

We considered two options, one was to use 2 x 6v 3 cell packs in series and hide them behind the side panels next to the motor but we discounted this as the diaper made it difficult and would be in a hot area.

Second option which we went for was a removeable cradle just ahead of the motor which slung the battery low and within the profile of the chassis but which was further hidden by a breather tank scalloped internally to cover the battery.  My first effort used an old Ford vacuum tank but I may replace it..  I think I'll be remaking this tank from scratch now I have a shrinker / stretch to make nice formed ends. 

Another option to consider is a small motorcycle 12v battery under the cowl to run electircs and start from a slave.

rooman:
On Mark Vaught's car we have an aircraft starter so the only electrical power needed is to run the various solenoids, tail light and the data logger. We use an 18 volt tool battery and it works great. The mounting base for it is made by Mike Berry, the pro stock motorcycle racer and it is a little "spendy". If you had an old dead battery drill or such I would bet that you could salvage the requisite parts from it to save some $$$.
  If you are using a larger unit the sealed batteries should be legal as is but I would put it in a box just to be safe in tech. I have seen a lot of pro mods recently with the batteries in the cockpit so they are getting away with it.

Roo

masracingtd1167:
Cody I would think you would want to keep as much weight as possible off the rear of the car . There are some pretty small batteries that you can mount way up front . Look at Jegs on line at batteries there are a lot of choices . Bill

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