Starting Question O-145 B2 1940 BL65 with the original engine

[Edwin Otha]

Re: Starting Question O-145 B2 1940 BL65 with the original engine

I have an A9 in one of the planes. Mine is marked with Left, Right, GND and BATT. I hooked it up as marked and left the BATT terminal open. Worked as marked.
EO

[wmfife]

Re: Starting Question O-145 B2 1940 BL65 with the original engine

The TCDS says 20° for the engine with a note saying if you are using greater that 73 octane fuel you can go to 25°. Now that you have it running I would try and move the timing back up to 25°. You will want all that power you can get. --3Dreaming

My TC is Aircraft Specification No. A-700, for all BL models and dated November 1, 1969. In it are listings for allowable engine models but nowhere does it provide info regarding re-adjusting the timing. So am very glad to learn here about adjusting for octane as I had pretty well figured that part out based on all manner of input ranging from old-boy rumors to EAA webinars. But still would very much like to see it in print from some official source I can show my IA. That would just about make my day.

65 means 65. I am tired of reading about the difference in displacement and how Continental's 65 is more than a Lycoming's 65. Those are just not the physics I learned. I knew there was more to the picture and one day lord willin' an the creeks don't rise I'm going to make all this work out.

[3Dreaming]

Re: Starting Question O-145 B2 1940 BL65 with the original engine

The TCDS says 20° for the engine with a note saying if you are using greater that 73 octane fuel you can go to 25°. Now that you have it running I would try and move the timing back up th 25°. You will want all that power you can get. --3Dreaming

My TC is Aircraft Specification No. A-700, for all BL models and dated November 1, 1969. In it are listings for allowable engine models but nowhere does it provide info regarding re-adjusting the timing. So am very glad to learn here about adjusting for octane as I had pretty well figured that part out based on all manner of input ranging from old-boy rumors to EAA webinars. But still would very much like to see it in print from some official source I can show my IA. That would just about make my day.

65 means 65. I am tired of reading about the difference in displacement and how Continental's 65 is more than a Lycoming's 65. Those are just not the physics I learned. I knew there was more to the picture and one day lord willin' an the creeks don't rise I'm going to make all this work out.

Look up the TC for the engine. That is where the information on timing is.
http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/6d1ad321e41274718525670e004d2e24/$FILE/ATT76FH8/TC210.pdf

[wmfife]

Re: Starting Question O-145 B2 1940 BL65 with the original engine

Look up the TC for the engine. That is where the information on timing is.
http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/6d1ad321e41274718525670e004d2e24/$FILE/ATT76FH8/TC210.pdf

Got it! Thanks. You just made my day!


...BTW wondering if anyone still does ign. timing using a mechanical feeler gage. We flew twelve-hour flights over open water at night behind engines timed with nothing more.