Tue Jun 16, 2020 9:59 am
#1777314
Inspired by the thread on TEL, I had a look to see whether I could fly my PtoF aeroplane with Mogas or other fuels than Avgas 100LL.
My specific engine is stamped as an O-360 A1D but has had a Bendix AMS 4290 injection system and a Christen inverted oil system fitted.
Looking at the Lycoming specified fuels chart as shown on their website https://www.lycoming.com/sites/default/ ... 0Fuels.pdf it indicates that the O-360 A series of engines can use Automotive fuels with an octane number above 93 and complying with standards ASTM D4814 or EN228.
I note that this would require an additive as specified. I also note that there is some discussion about methane content in MoGas (more important for the fuel system than the engine itself, I think) which would need to be checked.
But whereas the O-360A series can use Mogas, the IO-360A and AIO-360A cannot.
Does either the Bendix injection system and/or the Christen inverted oil system change the ability of the O-360 to run on Mogas? The engine should still have 1:8.5 compression ratio of the A1D, not the 1:8.7 of the IO-A1D?
Can I use Mogas as long as I don't fly inverted ?
(I've asked LAA engineering the same question - I'll add their reply to the thread when available)
@Mods: maybe move to technical discussion - apologies!
My specific engine is stamped as an O-360 A1D but has had a Bendix AMS 4290 injection system and a Christen inverted oil system fitted.
Looking at the Lycoming specified fuels chart as shown on their website https://www.lycoming.com/sites/default/ ... 0Fuels.pdf it indicates that the O-360 A series of engines can use Automotive fuels with an octane number above 93 and complying with standards ASTM D4814 or EN228.
I note that this would require an additive as specified. I also note that there is some discussion about methane content in MoGas (more important for the fuel system than the engine itself, I think) which would need to be checked.
But whereas the O-360A series can use Mogas, the IO-360A and AIO-360A cannot.
Does either the Bendix injection system and/or the Christen inverted oil system change the ability of the O-360 to run on Mogas? The engine should still have 1:8.5 compression ratio of the A1D, not the 1:8.7 of the IO-A1D?
Can I use Mogas as long as I don't fly inverted ?
(I've asked LAA engineering the same question - I'll add their reply to the thread when available)
@Mods: maybe move to technical discussion - apologies!
We all live under the same sky, but we don't all have the same horizon.