On Mon, Oct 6, 2014 at 7:21 PM, John Lussmyer via EV <[email protected]> wrote:
> I think I'm going to have to figure out how to water cool my DC-DC. > I built this one using 4 Vicor 20A bricks to get a 80A capable unit. > It all fits on the back of a 6" square 2" thick heatsink with a 6" fan on > it. > I'm noticing that when I'm running 40A continuous load, the output starts > becoming erratic. Ther fan on the heatsink doesn't seem to be enough when > I'm drawing a lot of 12V power. (blower, lights, brakes, etc..) > β > βI used a Vicor Megamod on one side of a 1/16" aluminum sheet and a Batmod with a simple control circuit cookbooked from the Vicor app notes on another sheet on the other side. In between I had a triple roβ w of 1/8" copper tubing doing a serpentine thing between the two β. Inlets and outlets were done with a little 3-into-1 collector into some 3/8" copper tubing. Everthing was JB Welded together. With 1/8" standoffs around judiciously placed screws, it all remained very flat and sturdy. Very compact for its power. It wasn't a quick build, but fairly straightforward. Unfortunately I never ran it at the loads you're pulling, but if that's a concern you could go up in size. You probably have room for that in your truck. I didn't in my car. Chris -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20141006/43b464f5/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
