Bob, on my CH-750 I have it set at 19 degrees which gives me about 5200 on takeoff and climb. I previously had it at 18 and as I recall it was around 5400.
"Thanks! I have another newbie question. Since the Viking engine is built to automotive tolerances regarding piston to cylinder clearance - is preheating required in cold weather?"
"Hi Bob. Yes you are right. The manual says maximum of 15% but all auto gas here in Brazil has 25% or 27% ethanol. Since I am monitoring closely and I had no issues with 90 hours of flight and it is a very clean fuel, the only concern would be the…"
"Hi Bob. My 110 engine has 90hs. I use auto gasoline here in Brazil with 25% ethanol. It has 95 octane. I used 100 LL only once just to test. Saw no noticable difference."
Bill Encke is now a member of Viking Aircraft Engine Forum
"Chane, sorry, I misread your name.
I did some experiments with the coil spring, compressed it with a hydraulic press on a scale until I didn't dare compress any more.
Viking steel bungee spring compression rate
"Thanks Eric,
I started my 801 in 2008. I’m getting close to finishing it now and my original bungee is sagging. I would rather change it for a spring than buy a bungee that I’ll have to change every year. I just wanted to make sure the Viking…"
"Hi Chuck. Yes, I put a steel bungee on my 801. Haven't flown it yet, but did a lot of taxiing and it seemed to work fine. Compresses about an inch, and has another 3 inches of travel.
The inner diameter of the tube seemed to be a little tight and…"
I'm new to this forum and new to Viking Engines. I'm early in my research. My question is: Does a Viking 130 engine reduce the fuel rate automatically through the ECU as altitude increases - to lean out the mixture? If so, is there an altitude limit…
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