jetdriven

I beiieve the "gage" nipple goes to a suction gauge.

Our dukes pump came from quality aircraft accessories. C&j and dukes both overhaul them. They are expensive around 800$. I think Peter on here got his repaired for a fraction of that. Search.

Quote: N4352H Amen.

That k also bent the fuselage down as well as the wings. It was a mountain wave accident and it was estimated at +/- 10G. I read the mooney engineering report. If it later showed up for sale, hey, it's just business. Caveat emptor, right?

No it is not worth 22k in value. But it is worth something

Have a look at the alternator there are two wires going to it. Both hav broken on us in the past year.

Find out which it is. We plug a volt meter in the cig lighter when flying. At least on the 77 j the volt regulator has the overvolt protection, anything over about 15v makes it cut the alternator off. Resetting the alt field breaker resets it.

Pick one of each!

Interesting is a 196 knot CAS at 25k feet is ~ 294 knots true airspeed!

the explanation is long, but it is true. http://www.vansairforce.com/community/showthread.php?t=41255

Ususally flutter speed can be raised by increasing the mass balance on the control surfaces. When the airframe stiffness comes into play you increase the stiffness of the wing with spar shear webs, such as they did in the 1956 G35 Bonanza. Its maximum speed was raised several times in its production cycle.

Thanks, Gary. My dad used to say never argue with a fool or a jackass, because an onlooker might not be able to tell who is who.

Because the M20TN flutter limit was raised higher than a M20K. As far as his article goes, an RV-4 is an RV-4 is an RV-4.

Please use the search feature. There is an increasing number of people whose first post is "How do I run LOP", or "whats an M20C worth". These topics have been covered over and over again.

The flutter limit can be raised

How in the "F" did something as simple as a rubber donut that probably was originally for a baler at Tractor Supply turn into a 90$ each item?

I think flutter margins can be increased with increasing the mass balance of the control surfaces. There is a limit to everything, however. I bet the Acclaim is getting pretty close.

Quote: allsmiles It amazes me that there is even a discussion on this! The fact is an engine sitting unused with 5 year old break-in oil is neglected for whatever reason, and can only be considered a pile scrap until proven otherwise. The exposure is real that the engine needs serious money weather he keeps the airplane or sells it. The seller has to be reasonable and frankly greatful he has a potential serious buyer. If he is serious about selling, it seems to me, he should consider cutting his losses for a neglected airplane/engine. On the other hand it would be the seller benefiting had he not neglected it. You are buying an airplane, not a lawnmower!

Worst case the thing gets can spalling and it has to be replaced. But until then, run that thing.

Flutter is based on TAS not IAS, and someone in a RV found out the hard way just as you said. He hit a nice bump and that excited the airframe into flutter. it was all over from there. http://www.vansairforce.com/community/showthread.php?t=72316 thats the wrong article www.vansaircraft.com/pdf/hp_limts.pdf Quote: Kwixdraw You don't want to be pushing it that hard anyway. Go to the Van's aircraft website. Van has an article in there about why you shouldn't cram the biggest prop twirling device in the airframe that can possibly be shoved in there. I think it's Martin Hollman at Aircraft Design Inc. that sells books and computer programming for those who must experiment. You should see his cgi demos of flutter modes. Long and short is that you don't want to be pushing redline at high altitude and hit some unexpected turbulence....it's a long fall from up there when the wings come off or the tail departs.

battery voltage an be approximated to state of charge. We do this on sailboats. I will say that an old battery will have less capacity at a given voltage than a newer one. When I fly, I have a plug in 12V digital meter and I monitor voltage all the time. The regulator should be set to 14.0V +0 -.2 per the Mooney service and manitenance manual. After you calculate your state of charge, take that value from half of the battery capacity. IE you cannot get 30AH our of a 30AH battery, only half that. The voltage gets too low and that spare capacity is unusable. If you have a 3 year old or older Gill G-35 then its going to be even less.

Worst case you crank the gear down. That indicator in the floor is primary, the green light is secondary. Again, Our partner got green down and locked with 8 volts. It wouldnt power anything. I have seen people crank an O-360 for a total of about ten solid minutes the battery was still doing it. If you want, top it off with jumper cables for 20 mins then you got a fresh battery. You will save a few gallons of 5$ fuel with the gear up. You can run it with no lights, the transponder and one NAVCOM. The amp draw there is around 1A on recieve, the KT76A transponder is 1A nominal, and ~2A with high activity. The gear motor has a 25A CB, it runs for 6 seconds for a full cycle. Then the T/C has a 1/2A draw. Now double that. Your load is ~5-7A total.

Our Shop is 13 NM away from our field. That takes 0.2 Tach hours, 1.8-2.0 GAL of fuel, and the total round trip cost is ~40$

Our alternator quit and the opther partner ran it down to 8 volts. Flew it 2.5 hours with everything on. Nothing would work. Except the gear came down on its own and green light. The air pulls it down, the motor has no load. Rather than fly 50 miles with the gear down, I would put the gear up, kill the master switch for the 20 minutes it takes to fly 50 miles, and then make a normal landing. I bet with only one NAV/COM turned on and a GPS, you can do it with everything on. It is a theoretically 30 AH battery, figure half of that is usable, you have a realistic drain of 15A for an hour. But that is just me. 75-80 knots will be near your most fuel efficient speed for range with all that drag. SWAG guess, around 65% power to get that.

Sometimes those compasses fix themselves