AydinZ71 15 Posted February 20 Share Posted February 20 just thought I’d share something I made incase it inspires someone to give it a go. I fabricated a battery holder for my Braille unit last weekend. Sits in the passenger “hump” right behind where the passenger seat would sit. Made from 20 gauge 304SS. Made some minor measurements to get started, but used the battery as a template for most of the cuts and marking the bend seams. I don’t have metal brake, so I just used a straight-edge, various hammers (including a 2lb sledge) and locking clamps. As some of you have experienced, SS is much less pliable than mild cold-rolled steel, so it does take some elbow grease. I used a DA sander to debur the edges and get a consistent brushed finish. I’d say I did an OK job. It’s not great but it’s solid and should last forever. Only about $10 in raw materials. I didn’t want an 11lb projectile if I got in an accident, so I secured it to the body using tack welded nuts on the underbody, and eight 1/4” bolts to hold it down. I picked the location to keep the CG low, and as far back as possible. I considered putting her near the fuel cell, but I prefer the weight slightly in front of the rear wheel vs behind at a higher elevation. some of the gap you see between the battery and the holder will be padded with a thin sheet of EPDM to cushion and eliminate any rattle. as always, open to your thoughts and criticism! IMG_5406.MOV Quote Link to post Share on other sites
grannyknot 29 Posted February 20 Share Posted February 20 I'll just play devil's advocate second, a battery in the passenger compartment is usually in a sealed container vented to the outside to prevent a build up of hydrogen gas in the cab and to prevent hydrochloric acid from flying around the cab in case of a collision. Quote Link to post Share on other sites
AydinZ71 15 Posted February 20 Author Share Posted February 20 35 minutes ago, grannyknot said: I'll just play devil's advocate second, a battery in the passenger compartment is usually in a sealed container vented to the outside to prevent a build up of hydrogen gas in the cab and to prevent hydrochloric acid from flying around the cab in case of a collision. hmmm, good consideration! It is an AGM battery, and designed to be mounted flat or upright. The race car has no windows at the moment so not too worried about venting. Il do some more research though! Thanks for giving me something to think about Quote Link to post Share on other sites
AydinZ71 15 Posted March 5 Author Share Posted March 5 On 2/20/2021 at 2:40 PM, grannyknot said: I'll just play devil's advocate second, a battery in the passenger compartment is usually in a sealed container vented to the outside to prevent a build up of hydrogen gas in the cab and to prevent hydrochloric acid from flying around the cab in case of a collision. I did a bunch of research on this. You made all good points. SCCA does not consider the Braille AGM battery as a “wet cell”, and therefore does not require the non-conductive marine type enclosure when inside the passenger compartment. Braille also describes the battery as being capable of being mounted on its side, so we are good there. I think I am OK, but we’ll see. Appreciate the feedback though! Quote Link to post Share on other sites
grannyknot 29 Posted March 5 Share Posted March 5 15 hours ago, AydinZ71 said: I did a bunch of research on this. You made all good points. SCCA does not consider the Braille AGM battery as a “wet cell” That's good to know, thanks. Quote Link to post Share on other sites
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