Hydro Wiring Question

So I'm trying to figure out how to set up my trunk, but I've started to run into a bit of an issue. Due to the off set of my tire well I was wondering...
 
When mounting my pumps, I planned to mount them to a piece of steel, but then wanted to mount that to my wooden false floor and then ground the pump to the floor with some 0 or 2 guage wiring. I'm sure this isn't the ideal situation, but can it be done with out major issues? I can run multopul ground wires if that helps the situation.
 
Basicly
Pump to Steel block to wooden false floor with ground wires from steel block to floor
 
Also while I ask with a two pump four dump set up is a two battery 24V set up ok or will I need more power? I understand I will need to recharge more often, but thats not a huge issue.

Edited: 7/31/2009 11:41:40 PM by DRGN4DR

i wouldnt recommend mounting a pump to wood ever. make a steel mount that can bolt to the floor...or like lowriders do weld it to the frame through the floor. but if you must mount it to wood or whatever the pump needs to be grounded somehow. that wood will eventually break cuz of the torque of the pump. not saying it cant be done, but id be skeptical on how long itll last. and yes 24v is enough. i run 36v and its fine. its not really how often you will have to recharge, its more the speed that motor is going to spin. weight of vehicle and pump head gear makes a difference in speed also.

Pumps can really torque hard when you power them up. I would bet that the pump would pull away from the wood at some point. If you end up mounting them to wood I would think the best thing to do would be to ground them straight to the bat, (less connections are always better).

I just want to make it clear that the pump would be mounted to a metal plate first and that plate would be mounted to a wooden floor. So the pump is not directly mounted to wood. The metal plate I planned to use was 1" box tubing(I think... its scrap from my garage)

i don't think you will ever have a problem doing it the way you want to just make sure your false floor is made strong and sercured well to hold the all the weight you have on it .

I had a pump mounted the same way with my old Accord back in '98 running 24 volts....never had a problem.  Just make sure that metal plate your mounting the pump to is large enough to distribute the torque evenly on the wood when the pump spins.  Any other questions let me know. -Aaron 

so I'm slowly installing these parts as I receive them in the mail. Right now I'm just working on running hose under the car and wiring everything up. I was going to ground my pumps to the stock bat location (battery is in the trunk) but I was wondering if there would be any issues since I'm planning to run a 24V system and stock is 12V. I AM NOT GOING TO GROUND THE PUMPS TO THE STOCK BATTERY, JUST THE METAL THAT ITS GROUNDED TOO (part of the trunk floor) Is there and issue with this and if so how far should I ground the 24V system from the 12V system?

It should be fine, but I'd still run a quick disconnect into the car under the driver's seat you can safely pull the ground (to the battery) when needed.  If it's not a good ground you'll know right away (it won't work). 

Why don't you mount the pump to a metal mount and build the floor around the mount. That way you don't have to run an extra ground. Plus it will be more secure and there will be less issues to worry about. A piece of 1" square on top of some wood is not stable enough. You will need to use a flat plate to spread the load out more, or a piece of wider box tubing. If you can't fab up a mount for yourself, let me know, I could build one for you. It would be much better built this way then going through metal, then wood and an extra ground wire. For the battery ground issue,you should run the ground from your hydro battery up under your seat, through a  quick disconnect, then ground the other side to metal under your seat. Since I am unsure what vehicle all this is going in, so I can't tell you how nice 24 volts will be. It will obviously be slower than 36volts, but will it be bareable??? depends on the weight of the vehicle. The length of the charge will not change as much as the power loss. I ran 24 in my Mazda, but I am much happier with 36 in my Mercedes.