Have a question hoping someone out there can answer ? On the big Hawk , the thrust tube sticks out the rear by about 2 inches . I have always been on the understanding that we keep the rear of the pipe about 3 mm to 6mm inside of the body. to help with air scavaging and cooling of the pipe . All the pictures of Hawks flying show the pipe outside the fuselage by that distance . thanks Terry

I agree with what your saying. but look on comp site and a couple of videos . that's more than 12mm . from the stock carbon bi pass to back of hawk is 940 mm around 37 inches the stock pipe is 39 inches . has to be a reason csnt be turbine choice because the by pass fits the frame rails

For what it's worth mine sticks out about 12mm as Dave says.
Bob

thanks . do you have a picture by chance . to get that I agree that's correct measurement I have to cut down front of by pass .

from comp / arf site

with pipe up on the by pass I have 25mm out the back . about 1 inch

thanks for your input talked to Andreas . 12mm is good . it's basically to be more scale. so I will move turbine ahead and it will work great . Terry .... badboyzrc.com