I have the Sensenich ground adjustable composite prop for my RV8. Everything was purchased through Vans.
I trial fitted the propeller to my engine this weekend but I discovered that the supplied bolts did not protrude past the crankshaft propeller flange of the IO-360-M1B engine. The bolts came up slightly less than 1/4" short of the propeller flange bolt holes. Subsequent measurements verified that the bolts were less than 1/4" short when all the parts are stacked together.
I called Sensenich tech support and he said the bolt engagement depth is okay if it is at least the same as the bolt diameter. The bolts in question are 1/2 inch in diameter. From the installation, the bolt engagement depth is over 2 times the bolt diameter. Sensenich tech support indicated that the later version of Lycoming 360 engines have thicker propeller flange than the older models. I have to take his word for now.
Question 1: For those who has this propeller, do you have the same problems as described above? The question is also applicable for the carbureted O-360-A1A engine or other Lycoming engines too.
Question 2: for the DAR and A/P: is there a documentation of the valid bolt engagement depth specification that can be publicly accessed by the regular public? I would like to verify the acceptable propeller bolt engagement length.
Question 3: For those who used the stock IO-360-M1B or O-360-A1A with the Sensenich ground adjustable composite propeller, if you used the kit hardware, including the bolts from the kit, have you experienced anything out of the ordinary?
Thanks for your time.
I trial fitted the propeller to my engine this weekend but I discovered that the supplied bolts did not protrude past the crankshaft propeller flange of the IO-360-M1B engine. The bolts came up slightly less than 1/4" short of the propeller flange bolt holes. Subsequent measurements verified that the bolts were less than 1/4" short when all the parts are stacked together.
I called Sensenich tech support and he said the bolt engagement depth is okay if it is at least the same as the bolt diameter. The bolts in question are 1/2 inch in diameter. From the installation, the bolt engagement depth is over 2 times the bolt diameter. Sensenich tech support indicated that the later version of Lycoming 360 engines have thicker propeller flange than the older models. I have to take his word for now.
Question 1: For those who has this propeller, do you have the same problems as described above? The question is also applicable for the carbureted O-360-A1A engine or other Lycoming engines too.
Question 2: for the DAR and A/P: is there a documentation of the valid bolt engagement depth specification that can be publicly accessed by the regular public? I would like to verify the acceptable propeller bolt engagement length.
Question 3: For those who used the stock IO-360-M1B or O-360-A1A with the Sensenich ground adjustable composite propeller, if you used the kit hardware, including the bolts from the kit, have you experienced anything out of the ordinary?
Thanks for your time.
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