Built2Fly
Well-Known Member
@sigrana, that matches almost exactly what I have. I have a set of 3-blade IVOPROP with my project. Each blade is about 28-3/4" from tip to mounting hole. The radius of the mounting hole circle is about 2-1/2". So the prop has a full diameter of 60".


The engine drives it through a belt reduction unit. I don't have the reduction ratio measured yet, but I would guess that it is the original reduction unit with G50. Yes, this will be installed on an ultralight Hiperlight SNS8 which I am building. I once watched a video on EAA archive. It says that the load is an important factor in tuning the 2-stroke engine. A lot of times what we think is a carburetor issue could indeed be a load issue. I think we are on the right track.
By the way, I tried to keep as much discussion here as we can. This is so there are some information left that can be shared by the people who might come at a later time with similar quests. However, I do want to respect your intellectual property. If you felt that there are information that should be left to a private discussion, we shall move to use email. Thanks a lot.


The engine drives it through a belt reduction unit. I don't have the reduction ratio measured yet, but I would guess that it is the original reduction unit with G50. Yes, this will be installed on an ultralight Hiperlight SNS8 which I am building. I once watched a video on EAA archive. It says that the load is an important factor in tuning the 2-stroke engine. A lot of times what we think is a carburetor issue could indeed be a load issue. I think we are on the right track.
By the way, I tried to keep as much discussion here as we can. This is so there are some information left that can be shared by the people who might come at a later time with similar quests. However, I do want to respect your intellectual property. If you felt that there are information that should be left to a private discussion, we shall move to use email. Thanks a lot.