MAS 13x6 prop, old english diesel mix (just for kicks, it's easier to make in a jiffy).
From the sound I reckon around 9000 rpm on this prop.
Long idle periods and fast response, a sweetheart of an engine :-)
I need to raise the idle a wee bit once in a while as the fuel starts to drain from the carb back into the fuel tank, as the carb has difficulty sucking the fuel at such low rpms ( the tank sits around 1 inch / 2 cm lower than the spraybar on my test bench).
Oh, if you're wondering, yes, it's silicone (glow) fuel line, except inside the fuel tank where it's tygon. As long as I clean the lines with old glow fuel the silicon will regain from the little swelling caused by the diesel fuel; in an airplane it would all be gas compatible fuel lines with no silicone tubing.
Nice finger biter!!...and loads of tork... You can here that,no mistake possibel. Runs similar to my Enya ss 25 >> reng,dend,dedeng,....deng...deng.... love the sound!!
:-)
Keep it up!!!
valic000 3 months ago