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Posted

hello every body, can any one explain me the difference between the SAE type 1 and the SAE type 2 wood propellers for Lycoming O-235 engine?:o I'm in the process of looking for a propeller and even if have a document that tells me that my O-235-C2C require a SAE type 1 hub propeller, I will like to know if there is some other difference besides the 4 3/8(type 1) and 4 3/4(type 2) inches bolt cyrcle. :feedback:

Thanks.

_________________

Mynor M B

Long EZ

http://www.flyingez.com

Posted

As you have already discovered, there are two sizes for prop flanges. SAE 1 is used for smaller engines like O-200's and SAE 2 is used for larger engines like a O-320 or O-360. The larger flange is stronger and therefor able to handle larger loads imposed by a larger prop needed for higher power.

 

Your O-235 is different. Lycoming offered the O-235 with either prop flange. So, if you were an operator that had been running O-200 powered aircraft (SAE 1) and you wanted to be able to have interchangable props, you could do it. Cessna 150 to 152 transition for example. Other O-235's were built with SAE 2 flanges that were the same as all other Lycoming engines.

 

So, when you go to order a prop for your O-235, the prop maker needs to know which hub your particular engine has since it could be either one. Otherwise, there is really no operational difference.

Rick Pellicciotti

Belle Aire Aviation, Inc.

http://www.belleaireaviation.com

Posted

Thanks for your answer RPILLIOCCIOTTI, that clear it up for me, so in my particular case, I need a SAE 1 flange propeller. Do you know which are the propeller brands approved for my airplane and engine? cause I have found taht sensenich have the W64HKL-68 but it exceed the 58 inches diameter recomended by Rutan, and the manufactures recomended originally by Rutan, are hard to locate, So I will like to know if you know which TWO BLADE WOOD PROP can I buy for my O-235-C2C Eng Long-EZ?. Once again tanks for your help.

Regards.

_________________

Mynor M B

Long EZ

http://www.flyingez.com

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