Originally Posted by BarelyAWake
I'd use a 1/2 link to get it just right but the only ones I've found use a lil cotter pin instead of a peened over head - with the 41 chain on my bike, I haven't the clearance to trust a cotter pin.
All half links use a cotter pin. It's very reliable and the only way to do w/o a tensioner on some bikes. Fortunately my bikes have good dropout length and don't require it but several of the people I did bikes for weren't so lucky and need the half link. None have failed.
Can't say that for the tensioners themselves.