Low Cost Fuel Alternative
Looking for something less expensive than $17-$22 a gallon glow fuel?
Although this is going to be primarily used in Sato engines W/electronic ignition, there are some YT videos showing it being used in glow engines W/O any modifications to the engine.
You can adjust the oil content to suit your needs. I have opted to run a mix that will be compatible W/the lower temperatures encountered W/spark ignition.
Google had revealed a station that had E-85 on the route to Pittsburgh so I loaded an old fashioned 5 gallon gas can that has positive sealing spout & vent caps in the trunk before I left.
At a well stocked βHobby Expressβ near my Auntβs house I picked up some fresh 15% Cool Power as a control for my testing as my 2 (unopened) gallons of the same have been sitting for some time. Although Iβm confident that they have not absorbed any moisture, I still had doubts about the nitro stability over many years. Anyway, in addition to the fresh glow fuel I picked up 32oz of SIG Klotz synthetic oil that is compatible W/alcohol fuel.
I paid a slightly inflated price of $16.49 @m the Hobby Express. If this works out well, I can get the oil direct from SIG for $13.99 & shipping will be free if I combine the purchase of several quarts W/other building materials I need to total $150 or more.
I settled on 15:1 mix ratio as Saito recommends 20:1 for their gas engines. (The FG 57 gas twin has the same part # for the connecting rod as the 300T glow engine) I opted for a bit more oil content as I have been lead to believe that gasoline has a bit more lubricity than alcohol. The oil content = 7 Β½% @ 15:1.
I stopped on the way home & purchased some E-85. 15 quarts of E-85 = 3.75 gallons @ $3.599 a gallon = $13.50.
$13.50 + $16.49 = $29.99 for 4 gallons of fuel/oil mix = $7.50 per gallon. The lower price of the Klotz from SIG will lower the cost per gallon to $6.75.
We are having a cold snap W/the temperatures dipping to 0*F tonight, but we are supposed to be in the 50s by Wednesday so I will delay testing until the warmer weather.
I plan to run a gallon of my old fuel through the NIB Saito FA 150 to break it in & then I will do some full throttle RPM & fuel consumption tests on both the old & fresh glow fuel. Iβll give the E-85 mix a shot on glow ignition too. It would be great if I could totally eliminate the glow fuel in my non-spark ignition Saito engines too. Confirming the glow ignition compatability of E-85 would be great news for FS 400R5 users too.
Iβll then covert to spark ignition & do similar tests.
I am thinking that cylinder head temperature readings would be helpful for the best evaluations.
Does anyone have any recommendation for an INEXPENSIVE temperature meter?