Do you want straight lace? 4 cross ? 3 cross? Twist lace? need more info…. I always ran straight lace and never had lateral problems…but I dont know how abusive you are on the back wheel……… More info please……
Try the internet for a spoke length calculator. You need to enter in certain dimensions of your hub, rim, pick the cross pattern, usaully 3 or 4, and then, bang, it spits out the length you need. (7- 5/8″ usually will do the trick) 193-194 mm
Straight lacing is easy-money…Start from the valve and finger tighten spokes to the end of the nipple evenly all the way around…You really cant mess up straight lacing…Do you have a truing stand?
Spoke length also depends on rim on average the spoke length for 3 cross is 184mm Adam is right on with the 166mm length for straight lace just check the dish will need truing stand ….LUBE NIPPLES!!!!