Hi folks,

I'm starting to look at sizing my bypass for a TJT3000 I just received. I'm thinking an inner tailpipe (fed by the turbine exhaust and bypass) diameter of 3.25" is a reasonable size. Any opinions? I will also be using an outer pipe, feeding from the inside of the model, external to the bypass.

This will be for a scale or sport scale model, of about 25 lbs dry.

Thanks for any inputs. I posted on the tjt website, but I don't think the post went thru.