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Battery Hold Down?? #769068
08/08/10 07:12 PM 08/08/10 07:12 PM
Joined: Sep 2006
Posts: 3,021
Sac, CA
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mopowers Offline OP
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mopowers  Offline OP
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Sac, CA
Can you folks post a picture of how you mounted your trunk-mounted battery?

I read in the rule book that it needs 3/8" bolts. Do you just use all thread?

Thanks!
Re: Battery Hold Down?? [Re: mopowers] #769069
08/08/10 07:40 PM 08/08/10 07:40 PM
Joined: Apr 2005
Posts: 1,880
USA
Ron Silva Offline
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If you use J hooks the ends need to be welded closed. 3/8 Minimum. I used 3/8 bolts and welded them to the base.

6129805-68.JPG (91 downloads)
SRT DEMON ONE SEAT
Re: Battery Hold Down?? [Re: Ron Silva] #769070
08/08/10 07:43 PM 08/08/10 07:43 PM
Joined: Apr 2005
Posts: 1,880
USA
Ron Silva Offline
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USA
2

6129814-MVC-024S.JPG (86 downloads)
Last edited by dragrcr97; 08/08/10 07:47 PM.
SRT DEMON ONE SEAT
Re: Battery Hold Down?? [Re: Ron Silva] #769071
08/08/10 07:53 PM 08/08/10 07:53 PM
Joined: Jun 2005
Posts: 6,257
gulfport, ms, west mi
rowin4 Offline
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I use 3/8" all thread, Used to have a plastic battery tray with 3/8" all thread secured with nut a washer top and bottom of trunk floor, perforated angle across the top. Now 1"x1" sq. tubing with all thread bolted through with a nut welded on the bottom, same top set up.


it's ok to butt heads, just don't do it with a butthead
Re: Battery Hold Down?? [Re: mopowers] #769072
08/08/10 08:55 PM 08/08/10 08:55 PM
Joined: Aug 2003
Posts: 43,905
Bend,OR USA
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Cab_Burge Offline
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I used 1/2 allthread with big fender washers above and below the trunk floor to secure my batterys. I hope the picture shows enough for you to get the idea. Both batterys are Rv/Marine deep cyles from Costco, as big as I could get

6129955-MVC-054S.JPG (71 downloads)
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Battery Hold Down?? [Re: mopowers] #769073
08/08/10 08:59 PM 08/08/10 08:59 PM
Joined: Nov 2009
Posts: 3,410
Belpre,Ohio
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CHAPPER Offline
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I used this Taylor box. It came with 3/8" ALL THREAD..is NHRA accepted,,therefore, I say 3/8" all thread is legal.

If you like drag racing, support your local track.
Re: Battery Hold Down?? [Re: Ron Silva] #769074
08/08/10 11:01 PM 08/08/10 11:01 PM
Joined: Sep 2006
Posts: 3,021
Sac, CA
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mopowers Offline OP
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Thanks for the ideas guys.

Is there a min. spec for the hold down strap? I was thinking of using a piece of 1/4" or 3/8" aluminum. Maybe 1" or 1 1/2" wide. Would this work?

Quote:

If you use J hooks the ends need to be welded closed. 3/8 Minimum. I used 3/8 bolts and welded them to the base.



You welded that frame/tray to the floor panel correct?
Re: Battery Hold Down?? [Re: mopowers] #769075
08/08/10 11:08 PM 08/08/10 11:08 PM
Joined: Jul 2008
Posts: 70
Calif, USA
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viperrt Offline
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Here's a picture
Re: Battery Hold Down?? [Re: viperrt] #769076
08/08/10 11:12 PM 08/08/10 11:12 PM
Joined: Sep 2006
Posts: 3,021
Sac, CA
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mopowers Offline OP
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Sac, CA
Quote:

Here's a picture



That looks real good. What did you use for the hold down and tray?
Re: Battery Hold Down?? [Re: mopowers] #769077
08/08/10 11:23 PM 08/08/10 11:23 PM
Joined: Apr 2005
Posts: 1,880
USA
Ron Silva Offline
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Ron Silva  Offline
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You welded that frame/tray to the floor panel correct?



Yes there are welds all the way around. You just can't see them because some are on the inside. That also happens to be right on top of the frame where I put added welds underneath frame to floor. I used 1/2" OR 3/4" square tubing. There is no requirement for the hold down strap that I know of. Common sense here says at least as strong as OEM and remember it is a race car and will potentially crash a lot harder than a road car.

6130321-MVC-024S.JPG (38 downloads)
SRT DEMON ONE SEAT
Re: Battery Hold Down?? [Re: mopowers] #769078
08/09/10 08:46 AM 08/09/10 08:46 AM
Joined: Feb 2010
Posts: 1,377
Ohio
Todd Offline
pro stock
Todd  Offline
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Ohio
Here's mine. Still in progress hope to be done soon.

6130661-0416091753a.jpg (53 downloads)
Re: Battery Hold Down?? [Re: Todd] #769079
08/09/10 07:58 PM 08/09/10 07:58 PM
Joined: Jan 2003
Posts: 2,366
PA
7
70HemiGTX Offline
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PA
I used 3/8" studs. Threads on each end. Double nuts on bottom side of trunk floor and single nut on top of batter box (on floor of trunk). Then I got a piece of 1/4" stainless and had it bent to fit the battery. Plus my box is welded to the floor and frame.

6131652-DSCF0049.JPG (43 downloads)
Last edited by 70HemiGTX; 08/09/10 08:31 PM.
Re: Battery Hold Down?? [Re: 70HemiGTX] #769080
08/09/10 08:23 PM 08/09/10 08:23 PM
Joined: Nov 2009
Posts: 3,410
Belpre,Ohio
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CHAPPER Offline
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CHAPPER  Offline
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Belpre,Ohio
"rules" call for the hold downs to be attached to the FRAME...I don't know how well that is enforced, but I did make brackets off the frame rail to bolt the hold downs to.

If you like drag racing, support your local track.
Re: Battery Hold Down?? [Re: CHAPPER] #769081
08/09/10 08:52 PM 08/09/10 08:52 PM
Joined: Jan 2003
Posts: 6,187
Melbourne , Australia
LA360 Offline
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LA360  Offline
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Melbourne , Australia
On a Uni Body vehicle it could be argued the floor is part of the frame?

Alan Jones
Re: Battery Hold Down?? [Re: LA360] #769082
08/09/10 10:07 PM 08/09/10 10:07 PM
Joined: Nov 2009
Posts: 3,410
Belpre,Ohio
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CHAPPER Offline
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Belpre,Ohio
I have found it 'not good' to "argue" with tech inspectors!!! J/K

If you like drag racing, support your local track.
Re: Battery Hold Down?? [Re: 70HemiGTX] #769083
08/10/10 10:29 AM 08/10/10 10:29 AM
Joined: Sep 2006
Posts: 3,021
Sac, CA
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mopowers Offline OP
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Quote:

I used 3/8" studs. Threads on each end. Double nuts on bottom side of trunk floor and single nut on top of batter box (on floor of trunk). Then I got a piece of 1/4" stainless and had it bent to fit the battery. Plus my box is welded to the floor and frame.



That looks awesome. What did you paint your trunk with? It looks like spatter paint. What brand is it? How do you like it?
Re: Battery Hold Down?? [Re: mopowers] #769084
08/10/10 12:48 PM 08/10/10 12:48 PM
Joined: Jan 2003
Posts: 2,366
PA
7
70HemiGTX Offline
top fuel
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Joined: Jan 2003
Posts: 2,366
PA
Yes it is a spatter paint called Zolatone. Comes in many colors. It is actually a truck bedliner paint. Very thick and heavy when applied. Makes a mess of your gun, but results are nice. Easy to clean also. Gas doesn't bother it either.

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