That is a PSRU, a Propellor Speed Reduction Unit. They are necessary when fitting an automotive engine to an aircraft with the RPMs auto engines run. Props become inefficient after about 2500-2700 RPM (depending on the prop).
Did they say what type of aircraft? Looks like a Lancair.
i see you like what i have done to 1uzfe engine!!this plane is my own design and is made from fiberglass.the engine has a 2:1 ratio reduction drive for the prop,and is belt drive.yes i am using a aftermarket ecu,that is only using the crank pick up!!there is no problem with the oil,because it is not made for airobatics!!this is my secound plane with the lexus engine and my first one is all most ready to fly!cant wait to get her up in the air!!there will be more pics to follow soon,if any body is keen!!send your question and i do my best to answer them for you!!and thanks a mill to lextreme for all there help and info!!great job!!all the best jean-francois
Hi thanks for the interest and yes i will be posting some more pictures this week!!because i am doing my first test flight with the 1uz engine and cant wait to see what she can do!!I am still busy with a web site and soon that will be running!!This plane was my own design and it took me 12years to get her where she is and now i have five bodys that are ready for sale and flight!I am located in south africa and the range of the plane is 5hours flyng time and a speed on around 150knots to 200knots,i will only know that when she is flying with the 1uz!!i will be using normal fuel unleaded!!it is half the price of avgas and the engine is more than happy with that!!thanks for all your questions and interest,and hope to chat with you guys again!!
hi there guys!!here are some long awated pictures of the 1uz flying!!
hope you like them and there is some more on the way!!
please let me know what you think and any questions you have!!
thanks for looking and happy holidays!!!!