I am seriously thinking about putting a Composite Arf Roookie together with a Tam or similar vector thrust nozzle. I was told that a vector nozzle would reduce my turbine engine life considerably ( as much as 60 %). Anbody have any thoughts or experiances along these lines ?

Any other comments about any aspect of vectored thrust aplications would be appreciated. What other kits should I consider ?

Thanks

Did they tell you why the life of the turbine would be affected by the vectored nozzle?

From discussions I've had with several Jetcat service guys, it's not that the vectored nozzle is the issue, it's the strain that is placed on the bearings when doing tumbling or high rates of rotation in off-axis manuevers (i.e. tumbling) that the vectored nozzle makes possible. Makes sense as a turbine wheel turning 120K or so is going to act as a pretty good gyroscope, placing a lot of loads on the bearing races and cages/side walls.

Barry

Barry,
That makes sense so vectored thrust in a scale plane like a Mig or Raptor doing scale maneuvers should be fine.

That seems to make sense. I sometimes do snap rolls with my F-86 and used to with a Bandit. I guess I might want to stop doing this ?? Doing them at or near idle might be a better idea ??