Guys
I have just bought the new FB T33 and am so far very impressed with the quality; however there were absolutely no instructions whatsoever included.
Being a newb to all things turbine I am at a loss somewhat when it comes to bell mouths, bypasses and thrust tubes with regard to distance best practices and the correlation between all three. The build as such is going along very well but I am ready to install the turbine, bypass and fit the thrust tube to the rear section of the aircraft, my questions relate to these procedures.
1 Does the bypass negate the need for a bell mouth?
2 If I fit a bell mouth should the turbine exhaust protrude from the end of the bypass or fit flush?
3 If it is to fit flush with the rear of the bypass what is the recommended distance to the thrust tube (I suppose in either case really)?
4 Should the thrust tube be flush at the rear of the aircraft or can it be recessed a slight amount (this will make it easier to install)?
5 One last one is it preferable to make the bypass readily removable so as to observe engine starts?
Sorry for the questions but there are very few experienced turbine fliers in my area.

Thanks and Regards
Peter

<span style="font-family: Arial; font-size: small;">Question 1- If you are running a Bypass you do not need the bell mount. At least I do not run a bell mount if I fit a bypass.</span><div><font face="Arial" size="2">Question 2- You should follow the instructions you get with your turbine for this. Jetcat at least displays this in the instructions. I would give it 15-20mm gap from the end of the exhaust of turbine to the start of the bell mount. You need this for the airflow. I would not install the exhaust of turbine inside the bell mount. This is if you are installing with out bypass.</font></div><div><font face="Arial" size="2">Question 3-If you are fitting a bypass I would still give it the recommended gap.</font></div><div><font face="Arial" size="2">Question 4-I would have it flush or protruding out a little. I would not have it protruding in.</font></div><div><font face="Arial" size="2">Question 4-If you are going to have a bypass and you can have it to take the top section of and on with no hassle this is going to be a bonus for you. I must say that all the ones I have seen do not come off easy and stay on during start up.</font></div><div></div><div><font face="Arial" size="2">Hopes this helps you Peter and good luck.</font></div><div></div><div><font face="Arial" size="2">Ivan</font></div>

<div><font face="Arial" size="2">Peter,</font></div><div><font face="Arial" size="2">send an email to Catherine from FB so she can send you the recommended cg and throws.</font></div><div><font face="Arial" size="2">These will be essential for the first flight.</font></div>

Actually... on #4... the tip of the pipe should be inside the fuse a little, if you don't have a bypass. The reason for that is... the air coming out of the pipe will have a light venturi effect, and it will help draw cool air though the fuse, and keep heat in check.

Thanks Ivan but I have already sourced that info from other sources and thanks for your response to my questions.

Peter