Quote:
Originally Posted by cheesehawk
There are no "normal" settings for the rads on oil or water, but you want them to be closed as much as possible (for reduced drag) and keep temps where you want them. That being said, I tend to open both up fully after the engine has warmed up on start up, then take off, then close oil about 60% and water about 30% (hard to judge here, both are analog, you have to look at the controls and guess where you have set them), and cruise at 1.75-1.2 ATA and engine around 2000-2500. I haven't really pushed the engines hard yet, as I'm still trying to come to grips with where I want the prop pitch through hard maneuvering.
Not sure if the head shake is a "bug", or just something else we're not considering. I don't have any time (other than a ride in a P-51 at an airshow many many years ago, but I wasn't the pilot) in a single-engine high performance aircraft with 1940s technology. Perhaps there was some resonance in the airframe that is transmitted to the pilot we don't know about? At any rate, my ride is much smoother with the head-shake turned off, but I disabled it because it interfered with my TrackIR, the smooth ride was just a desirable side effect!
In normal flight, I don't exceed 2500, but for short bursts, I think 3000 is ok. While diving and pulling during the bomber intercept mission for example, I find myself letting the engine rev up past 2600-2700 several times, even up to 3200. No smoke was coming out of my engine, no oil on the windscreen, but I didn't let the engine stay in that range more than 3-5 seconds. After mission end, it showed my plane had suffered 20% damage, not sure if it was gunfire, or my own abusing the powerplant. Use high RPM past the redline at 2600 at your own risk.
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I've had the same problem with the vibrating engine. The first time this happened to me it happened to both me and my buddy. We both flew over the channel and it began when we got to the cliffs.
During our flight we had constant RPM at around 2100 RPM, oil and water radiators both half closed ( for some reason our water radiators have 3 positions not fully movable like spit radiator ), and throttle around 3/4 maybe less. All temps seemed in range as well.
When we reached the cliffs both our engines started vibrating. throttle down, no shake, throttle up more and more viloent shaking.
My solution has be to keep water radiator fully open (third position) and oil 3/4 open and only close any of them further when diving or for short periods of combat. So far so good but find it weird that you guys are saying your radiators dont have "3 positions" and that you would have to keep the water radiator fully open during cruise conditions.
Anyone have the same issues?