[jhautz]

X ray active difs have been out for a few weeks now.

I just got the Xray active diff for my XB8 conversion. I only have one track day on it so far, but it seems like it will hold up fine. Much more robust design than the torsen I saw a while back.

The local indoor track is a smooth clay and it works good on it. Lets you really lay down the power comming out of the corner. As soon as you punch it the front diff locks up and it pulls like you are running 20K fluid in the front. As soon as you let off the power it releases and allows you to turn like whatever fluid you have in it. I set mine up with 5K and it really allows the buggy to bite in the tight turns on the indoor track.

Havent gotten to try it yet but I hear on bumpy tracks its not so good. When the front wheels start bounciing and the front diff is basically locked up it tends to make the buggy twitchy.

The thing about the Xray active dif is they are designed to be run in front only. Not really sure how they would hold up in the center or rear. And they only work in Xray buggies. They are not the same layout as the standard Kyosho/hyper/HB style difs.