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Question from a newbie: How do you run your engine to get
a) The best speed(max power) in low and high altitude?
b) the best economy (ROP or LOP)Doe someone have a scheme for power setting in different altitudes like some other types of POH provide or do you go by CHT and EGT.
What are you racers seeing on fuel burn on a typical race.
Thomas
How you run your engine depends on what engine you have, 470/520/550. My 200B has the IO-550F and I generally do short trips of 30 minutes to 1.5 hours at 4500′- 5500′. I’m not concerned about the fuel burn as I like the speed. I will run it at 23″@ 2400 186kts gps ( no wind ) and fuel burn around 19gph. Flew from my home airport CA32 ( San Joaquin,Ca ) to Columbia,Ca on Saturday at 4500′ 24″@ 2500 208kts gps (a nice tailwind) burning 20-21gph. The return trip later that day at 5500′ 23″@ 2450 was 168kts 19gph (damn headwinds).On a cold day 500agl everything firewalled it will indicate 220mph and around 25gph. When I do fly at higher altitudes I will lean until it runs rough then richen the mixture so it runs smoother
I have a 520a.
Here in Germany 100LL is about 8$/gal, so we try to run LOP.With my very limited experience with my plane I just did 1 longer trip of 3hr 45 min to France. In FL 85 she took 12,5 gal/h for 140kn GS. Therhe must be some improvement.
When she is back from the shop I will go for max speed ROP, Christmas is coming…
Any more information out there?
Thomas
The IO-550 and 3 blade prop makes a significant difference in the performance of the 200. My engine was sent to Lycon for head work and puts out 335hp. Fuel burn increases but climb out is way better as is cruise. I’ve owned this Meyers for 30yrs now and every flight really is fun. It feels so nice to fly as you 200 owners already know!
My 200C which I also race has the IO-520A with Gami’s and setup to cruise at 2350 RPM and what ever MP I can get which is obviously dependent on Altitude and other. Also run ROP. On average though, I cruise at 9 – 10,000 ft and avg. 21″MP @ 2350 @ 14 GPH which typically gives me around 186KTS True Airspeed. CHT’s are generally around 350 and EGT around 1390. For planning purposes I use 170KTS True and 15GPH.
In terms of racing, we firewall it most of the time with a few tweaks (secret kungfu) here and there and burn on average 24 GPH.
My 200 has a IO 520 engine. I normally cruise with fuel setting LOP. I have a EDM 700 installed so I can see exactly when I reach peak and GAMI plugs installed so all cylinders peak close to the same tempratures. I think this equipment is important for lean of peak operation. I continue to adjust lean of peak until I fell rougness in the engine. I generally can not get 50 degress lean before this occures. Although I do not reach 50 degress lean of peak, the EGT and cylinder head temperatures remain well within limits. My engine has 750 hours operating in this way and still has good compression tests during each annual.
With cruise around 8000 or 9000 and 2350 RPM I will indicate around 150 to 155 mph depending on weight and density altitude/temperature. This equates to around 160 knots true airspeed. The fuel flow is around 12.3 GPH at 8000 and 12 GPH at 9000.Hello all! would like to get all these different models of 200s, with different engines and props the 470/520/550 , and meet up to have a race together and really have some fun tweaking these lil ferraris of the sky. Check out the sport air racing league and sign up, John and I have had a few runs, at race settings 259M will turn 2750rpm at about 27in 2K to 3K altitude will usually indicate about 216-218 mph with a TAS of about 220- 222mph (193Knts) burning 23-24GPH at 75 deg ROP EGT 1425 with CHT around 360 depending on ambient, the real trick to going fast is getting the planes clean and tight with no extra antennas and lights, + good flap and gear door seals, An good trim job by setting the flaps and Horiz stab for a straight and flat running plane ( ball centered and elevator in line at full speed without any excessive trim 🙂 Now at travel setting I cruise = 7K 10K will turn 2350 at 21 inch burning around 16gph and TAS of 200-204mph 177kntas
Hey Jamon, nice job against the Bonanzas. It seems as though they have got them running near our 200 speeds.
Thanks Greg The bonanza bunch sure can get frustrated with the Meyers Im particularly excited about the 550 birds coming up and running hopefully we can see some real 200ktas speeds 230mph for us pre ’66 guys The plane i would be interested is the Mooney Ovations with the Big engines They are probably gonna be the plane to beat Will try to get a west coast race together will have to talk to the powers any recs on location and course would go along way Blue skies
Jamon, if you can make it out to California I will be happy to let you fly our 200B. This offer extends to any Meyers owner that would like to evaluate a 200 with an IO-550 and 3 bladed prop.
If you’re not getting expected True Airspeeds, you might consider rigging the flight controls and the flaps. That can have a huge impact on performance.
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