Expansion chamber design

[Murdoch]

I'm building an expansion chamber for my kart engine and I need to get cones rolled. Does anyone know who can do this? Minimum diameter is 22mm?

[sidecar bob]

Ask on the ESE thread.
There's a few people on there that will take a pile of money off you to weld a few bean cans together.

[jellywrestler]

I'm building an expansion chamber for my kart engine and I need to get cones rolled. Does anyone know who can do this? Minimum diameter is 22mm?

i spent a good chunk of the day yesterday at McIntosh racing developments yesterday, there was a guy in there rolling up some megaphones