I started seriously working on this trick on August 7th, my birthday, for Halo 3 Done Segmented. I tried various experimental approaches from the Scarab on the right (since doing the launch from the other Scarab does not launch you towards it), which resulted in many different results: http://youtu.be/ni4PeS9E2w8 None of them yielding any success.

In the third week of August, I was under the impression that a direct launch to the other Scarab was impossible. I still think that is the case.

So two days ago, I decided it had to be indirect and so I began utilizing the Scarab on the left (the one we all know and love). I tried launching to the destroyed Scarab so I could jump off of it: http://youtu.be/D731bTHlJkk I either did not get enough distance or I was too high to survive the impact. Soon I was able to get more distance out of the launch, but it would fall short every time. I also tried hijacking a Banshee mid-launch but it kept boosting away.

I was about to quit when this happened: http://youtu.be/MzkFdpAceUw It dawned on me that there was a pattern to this setup, a specific launch trajectory that could achieve the impossible.

Since then, I had reached the Scarab plenty of times, though I always fell off.

My first good result: http://youtu.be/g1k-8i2aNZ4
My third good result: http://youtu.be/vW9rlF8KBgM

Today, at around 12:30 AM PST, I was able to replicate the required launch and achieve the landing that had eluded me.

http://youtu.be/0rGZphiYbag