Marauder Posted January 12, 2016 Report Posted January 12, 2016 10500 full fuel 2 of us with about 75lbs baggage based on conditions (IAS OAT ALT) 147KTAS My POH says at 10,000', standard day, standard plane, you have to run 2700 RPM (74.9% power) to get 142-146 kts. What mods do you have? My F model will do 169 KTAS. I have the cowl closure, gap seals, the 201 windshield and a fat lady in the trunk. I also have proof. See the attached photo. Disregard that it appears I am in a 2.5 degree descent and that the VSI is showing 460 FPM and that you can't see the throttle and prop are firewalled. Sent from my iPad using Tapatalk Quote
aviatoreb Posted January 12, 2016 Report Posted January 12, 2016 My F model will do 169 KTAS. I have the cowl closure, gap seals, the 201 windshield and a fat lady in the trunk. I also have proof. See the attached photo. Disregard that it appears I am in a 2.5 degree descent and that the VSI is showing 460 FPM and that you can't see the throttle and prop are firewalled. Sent from my iPad using Tapatalk Is that a photograph of your attitude indicator showing you are pitched down? And -460fpm? Quote
Marauder Posted January 12, 2016 Report Posted January 12, 2016 My F model will do 169 KTAS. I have the cowl closure, gap seals, the 201 windshield and a fat lady in the trunk. I also have proof. See the attached photo. Disregard that it appears I am in a 2.5 degree descent and that the VSI is showing 460 FPM and that you can't see the throttle and prop are firewalled. Sent from my iPad using Tapatalk Is that a photograph of your attitude indicator showing you are pitched down? And -460fpm? Yep 1 Quote
aviatoreb Posted January 12, 2016 Report Posted January 12, 2016 Yep so that begs my next question - how do you get the nose to pitch down with a 700 lb beauty in the back? 2 Quote
Marauder Posted January 12, 2016 Report Posted January 12, 2016 Yep so that begs my next question - how do you get the nose to pitch down with a 700 lb beauty in the back? She was leaning forward. You have heard of Lean of Pitch before, right? Sent from my iPad using Tapatalk 3 Quote
DXB Posted January 12, 2016 Report Posted January 12, 2016 so that begs my next question - how do you get the nose to pitch down with a 700 lb beauty in the back? Put a cupcake on the glareshield. 6 Quote
Marauder Posted January 13, 2016 Report Posted January 13, 2016 so that begs my next question - how do you get the nose to pitch down with a 700 lb beauty in the back? Put a cupcake on the glareshield. That would be a nose dive! Sent from my iPad using Tapatalk Quote
gsxrpilot Posted January 13, 2016 Report Posted January 13, 2016 Could you please list all your speed mods, this seems significantly higher than any published data for stock "C's" It's definitely not stock. I've got every speed mod Lasar has available except the one piece belly. (which isn't really a speed mod) For what it's worth, Maxwell says it's the fastest C he's ever flown. Quote
M20F Posted January 13, 2016 Report Posted January 13, 2016 Where does the 430W display TAS? It's new to me ... It has a function to calculate TAS by inputting pressure altitude, temp, etc. it doesn't read it per se. The best way to determine actual TAS is a 3 point ground speed check as that will remove any instrument error from the equation. 2 Quote
bonal Posted January 13, 2016 Report Posted January 13, 2016 It has a function to calculate TAS by inputting pressure altitude, temp, etc. it doesn't read it per se. The best way to determine actual TAS is a 3 point ground speed check as that will remove any instrument error from the equation. Did that @ 8000ft 148 knots true and the four heading same day same altitude yielded 149 knots true, 2 on board about 70% fuel Quote
Ragsf15e Posted January 14, 2016 Report Posted January 14, 2016 On the Garmin, go to the "Aux" main page (large right knob, clockwise). Get to the Aux menu which is one before the "nearest" menu. Then go to the "flight Planning" page which is the first page on that menu. Push in the right knob to get the cursor, go to "Density Alt/TAS/Winds", hit enter, fill in the data on the next page (IAS, Altitude, Temp, etc), the Garmin with gonk the winds and your TAS. I have compared it to the 3 and 4 way ground checks and found it to be within about 1 knot, however... Using this function brings in the errors of your Airspeed Indicator, temp probe, and altimeter... my IAS was off by about 5kts at 140mph indicated. The best way is really the 3 way groundspeed test. Sorry to be off topic, but everyone knows Garmin has a free 430W/530W SIM on their website, right? It's really good for learning all the tricks in that thing, especially if you are using it for IFR. Rags 2 Quote
Marauder Posted January 14, 2016 Report Posted January 14, 2016 4 minutes ago, Ragsf15e said: On the Garmin, go to the "Aux" main page (large right knob, clockwise). Get to the Aux menu which is one before the "nearest" menu. Then go to the "flight Planning" page which is the first page on that menu. Push in the right knob to get the cursor, go to "Density Alt/TAS/Winds", hit enter, fill in the data on the next page (IAS, Altitude, Temp, etc), the Garmin with gonk the winds and your TAS. I have compared it to the 3 and 4 way ground checks and found it to be within about 1 knot, however... Using this function brings in the errors of your Airspeed Indicator, temp probe, and altimeter... my IAS was off by about 5kts at 140mph indicated. The best way is really the 3 way groundspeed test. Sorry to be off topic, but everyone knows Garmin has a free 430W/530W SIM on their website, right? It's really good for learning all the tricks in that thing, especially if you are using it for IFR. Rags If you think your post is off topic, have I got some threads to show you! The GTN series has a very easy to use version. 1 Quote
petegaz40 Posted January 22, 2016 Report Posted January 22, 2016 The Mooney wing seems to really be at home between 8-12K. One advantage of flying that high is that there isn't much traffic up there unless you are in the mountain west. 1 Quote
jetdriven Posted January 22, 2016 Report Posted January 22, 2016 CAS is about 1.5 to 2 knots lower than IAS at cruise speed. Quote
Guest Posted January 22, 2016 Report Posted January 22, 2016 On January 14, 2016 at 11:40 PM, Marauder said: If you think your post is off topic, have I got some threads to show you! The GTN series has a very easy to use version. I thought those numbers were for passenger weight. I guess I have to clean my glasses. Clarence Quote
Marauder Posted January 22, 2016 Report Posted January 22, 2016 On January 14, 2016 at 11:40 PM, Marauder said: If you think your post is off topic, have I got some threads to show you! The GTN series has a very easy to use version. I thought those numbers were for passenger weight. I guess I have to clean my glasses. Clarence These are the real numbers for W&B. Not an issue, right? Sent from my iPad using Tapatalk 1 Quote
Marauder Posted January 22, 2016 Report Posted January 22, 2016 And BTW -- the 60 pounds in the baggage area are their snacks. Can't travel on an empty stomach. Sent from my iPad using Tapatalk Quote
bonal Posted January 22, 2016 Report Posted January 22, 2016 Well at least the weight and balance sheet is more palatable than the selfie that you might have posted 1 Quote
Marauder Posted January 22, 2016 Report Posted January 22, 2016 You guys! Sent from my iPad using Tapatalk Quote
xrs135 Posted January 25, 2016 Report Posted January 25, 2016 (edited) To bring this thread back on track. Here is a cockpit shot in my M20C up at 15,500ft earlier today in level cruise. I just calculated the TAS, with 130mph (113kts) IAS, 30.13, and -10.5 degrees C... and came up with 145kts TAS. Edited January 25, 2016 by xrs135 1 Quote
Marauder Posted January 25, 2016 Report Posted January 25, 2016 For those of you who suspect that your TAS is low, I had a situation where a leak in the pitot system scrubbed 5 knots off of my IAS. Since I have 3 ASIs on board, I was convinced the speed was correct and that the plane's engine was at fault. Nothing showed on the engine analyzer data. I then realized that my religious checking of both the static and pitot drains during the pre-flight managed to create a pitot leak at the drain and it resulted in a 5 knot IAS loss. And since all 3 ASIs use the same pitot tube, it affected them all. I was due for a pitot static test and they found the leak at the drain. Sent from my iPad using Tapatalk 1 Quote
Jake35 Posted January 29, 2016 Report Posted January 29, 2016 150 -155kts at 12,500 to 16,500 in a naturally aspirated C model is fantastic! Quote
Guest Posted January 30, 2016 Report Posted January 30, 2016 2 hours ago, Jake35 said: 150 -155kts at 12,500 to 16,500 in a naturally aspirated C model is fantastic! What's pulling or pushing it to get that kind of speed! Clarence Quote
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