Probably nothing over 80mm - otherwise the compressor wont be able to fire it effectively & id have to go straight to CO2...

As much as i dont want to go for a CO2 system just yet, is it the only option to make a desent LP system??

The only other way i can think of is using two compressors linked to a buffer tank of some discription. As this is for a featherweight, i probably wont have the room or the weight left to do this.

(Message edited by Adam Stevens on January 30, 2009)