I started the year we stopped using victor 883s, so I don't know for sure ... but isn't one reason is that they don't have reverse polarity protection? But I know the 884s can be expensive -- every time I give the order for how many we need for the year, or ask for spares, the lead teacher begrudingly (and makes me much aware of it) pays the price! So at the competition, I got the idea to tell him that we broke one of our speed controllers, but I wasn't sure which one -- so we'd have to order ten more just to be safe! Now, it was either that or the virus that made him sick ... I'm not too sure
