Multiple planet flybys

[Twreed87]

I didn't see a topic on this yet, apologies if I missed it. I was wondering if anyone had managed to pull off flybys of multiple bodies, using gravity assists to reach each next one. They happen in real life all the time, surely people do them in KSP. I know they require really rare launch windows, I was wondering if anyone had worked them out.

I'm thinking something like, launch from Kerbin, descend down to Eve, boost up to Jool to get a flyby past Eeloo and out of the system. Even using the Oberth effect would be fine, along with some course corrections, but doing it without stopping within the sphere of influence of any body is the key. What's the craziest anyone's done?

[Vanamonde]

Moved to gameplay questions.

[Starstrider42]

I've heard that some people have been able to chain gravity assists by doing carefully timed maneuvers at each flyby. Personally, I've never been able to pull it off.

There is a standalone tool that lets you predict gravity assist windows (http://forum.kerbalspaceprogram.com/threads/36476-WIN-KSP-Trajectory-Optimization-Tool-v0-11-2-Mission-Architect-Pre-release-1!), but it only works for a two-planet trajectory (three if you count Kerbin).