I have constructed the mounting system to secure the fuel cell to the car. I used some 20x20x1.6 SHS tube to construct a rectangle frame to match the top flange of the fuel cell container. I then set a bunch of riv-nuts into it, to allow the cell to bolt to the frame. I then used some 0.8mm steel sheet to wall down the sides of the frame to meet the existing contour of the floor. I copied the contour onto the new sheet metal. And made a bunch of 10mm flange sections to.meet the floor contour. And then I welded it all in.
The box section frame is probably over kill for the fuel cell. But I figured it would be easy to construct using this material. And the box section would allow for riv-nuts from below to hold the cell. And also allow for riv-nuts from above to secure over a removeable cover/firewall. And also help to stiffen up the floor after I removed a big section of it to fit the cell in.
2019-03-17_02-02-21 by
bram biesiekierski, on Flickr
2019-03-17_02-13-32 by
bram biesiekierski, on Flickr
2019-03-17_02-14-17 by
bram biesiekierski, on Flickr
2019-03-17_02-00-31 by
bram biesiekierski, on Flickr
As mentioned before. The fitment is very tight. This foto shows how close the rear corner is to the chassis rail. The top edge of frame actually touchs on the chassis rail. And the lower corner is also right up against the brake lines. Which will need a minor adjustment to not rub.
2019-03-17_02-00-46 by
bram biesiekierski, on Flickr
Here you can see the clearance to the rear diff cradle. Its very very close.
2019-03-17_02-01-30 by
bram biesiekierski, on Flickr
Here is another shot from the rear. Very close to the rear crossmeber and lateral arms. I did shift the box forwards as much as i could to give max clearance.
2019-03-17_02-01-00 by
bram biesiekierski, on Flickr
This is clearance on the front side of the cell to the diff outrigger. Its super close here. I didnt leave enough space to get the front bolts done up. So I think this means the diff out-rigger will need to drop in order to secure the cell in place. I was hoping to avoid this. But its just the way it is. I guess its no different to having to drop the out-rigger in order to remove the OEM tank.
2019-03-17_02-04-28 by
bram biesiekierski, on Flickr
This is what the bladder looks like without the lid over the box.
2019-03-17_02-13-56 by
bram biesiekierski, on Flickr