Ratchet and Clank 2 Going Commando Walkthrough
Planet Barlow - Racing Circuit

You need Clank and the helipack to get over here. One of the thugs is here. "Get Lost" he says to you, but luckily Clank sweet-talks him into being nice. He lends you "Bluebell" - electrolize it to use it!

You're pod racing!! You have to learn the course well.
triangle/pyramids are turbo boosts
weapons are square boxes (none on first course)
X accelerates
L1 - weapon pickup
R1 - turbo pickup

You start on Amateur circuit challenge 1, main canyon open, turbos available, prize ?

The path is generally forward along the track with 2 jumps over water. There are turbo rings before an open area. Go through some machinery and across a bridge. Then head across an open area into a cave. The best track in here is to go down low left then jump up right to get the turbo rings. Then you're back out into the open.

We hit winner at 2:33.4 first place!! You get a helmet, and then you see a message from your boss. He wants to meet at the Feltzen system 12345. Thug Rendezvous.

The other courses are:

intermediate (200 bolts)
vukover
assault
expert

You can of course race more or come back later.

Ratchet and Clank 2 Going Commando Walkthrough