CMPro Lancair
#76
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RE: CMPro Lancair
Todd;
I see you went EP on your Lancair 360....As clean as this aircraft is, I was thinking of using an AXI 2826/08 or 2826/10 with a 3c2p. It would not be as fast as yours, but as long as it is a little bit faster than scale and has enough power for mild aerobatics, that'll work for me.
Any suggestions are more than welcome
Gary
I see you went EP on your Lancair 360....As clean as this aircraft is, I was thinking of using an AXI 2826/08 or 2826/10 with a 3c2p. It would not be as fast as yours, but as long as it is a little bit faster than scale and has enough power for mild aerobatics, that'll work for me.
Any suggestions are more than welcome
Gary
#77
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RE: CMPro Lancair
I'm running about 900W with mine, and it has much power. I would not go below 500W though. It would be nice to be lighter, mine is quite heavy for the wing type and area. I would make sure you keep the weight down wherever you can. Also, NEVER let your fuse sit in a hot car on a sunny day, it will actually get soft and distort.
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RE: CMPro Lancair
Todd;
Thanks for the info! Especially about the possible disfigurement of the fuse. IT HAS BEEN HOT here in Huntsville, AL for the past 5 or 6 weeks.
I ended up choosing an E-Flite motor the 32 series. Supposed to get around 650 to 700 watts out of it.
Regards,
Gary
Thanks for the info! Especially about the possible disfigurement of the fuse. IT HAS BEEN HOT here in Huntsville, AL for the past 5 or 6 weeks.
I ended up choosing an E-Flite motor the 32 series. Supposed to get around 650 to 700 watts out of it.
Regards,
Gary
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RE: CMPro Lancair
Where did you end up with your C.G.? I would think we would make it a little "tail Heavy" because we'll never have that 10 oz. of fuel in the nose.
On another note, I thought I had the lipo thing a figured out, but there is so much hype and war stories going around, I don't yet know what "brand" to purchase!
On another note, I thought I had the lipo thing a figured out, but there is so much hype and war stories going around, I don't yet know what "brand" to purchase!
#83
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RE: CMPro Lancair
As for the Lipo's, I have had good luck with all of the brands I have tried. The choices are a bit more limited when you get up into the larger sizes and cell counts. It is a good idea to use a cell balancer like the Astro Flight Blinky to keep your pack in good shape. If you don't get much air flow over the batteries, you'll have to limit the current to keep the temp down. I seem to be getting a bit of flow in the lancair from the control outlets in the rear and the holes in the front, but you need to open up some holes in the firewall to get a bit of airflow.
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RE: CMPro Lancair
Got mine the other day and I will be using an OS .46 SF engine. The engine fits just fine but you have to cut a big hole in the cowl for the muffler. Anyone tried a pitts muffler. The Slimline Pitts muffler looks like it may barely fit without cutting any holes except for the exhaust tubes. I think that will look better than the stock setup even if you have to cut a small hole for the side of the muffler.
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RE: CMPro Lancair
ORIGINAL: iFLYrc_Vic
The engine fits just fine but you have to cut a big hole in the cowl for the muffler. Anyone tried a pitts muffler. The Slimline Pitts muffler looks like it may barely fit without cutting any holes except for the exhaust tubes.
The engine fits just fine but you have to cut a big hole in the cowl for the muffler. Anyone tried a pitts muffler. The Slimline Pitts muffler looks like it may barely fit without cutting any holes except for the exhaust tubes.
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RE: CMPro Lancair
I have had some performance issues with other planes with pitts style mufflers. I had to block off one of the tubes entirely for one application. Thanks for the reminder...
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RE: CMPro Lancair
BJOR, one of us has a newer model for this plane from CMP. I just got mine a few weeks ago and my servo tray is different. They rotated the rudder/nosewheel servo 90 degrees and move it forward. The elevator servo is now located on the centerline behind the rudder servo. This results in the elevator push rod running down the center of the plane rather than from one side. I have another plane (GP Lancair) that has split elevators and if the push rod is not centered, the elevators deflect at different rates. At full deflection, one elevator has a higher angle than the other which will induce some roll (snap).
I suppose there were some complaints about this and they revised the design to get the elevator push rod centered. They added some plywood spacers for the rudder servo to raise the servo arm up enough so that the pull-pull wires don't rub across the top of the elevator servo arm. I had to add additional spacers to get good clearance. I also used some heat-shrink tubing on the ends of the wires prevent the wire lock (copper tube) from snagging on the elevator servo arm.
This is not my model but you can see the location of the servos in the servo tray. The instruction sheet does not show anything mounted in the outboard servo holes.
I suppose there were some complaints about this and they revised the design to get the elevator push rod centered. They added some plywood spacers for the rudder servo to raise the servo arm up enough so that the pull-pull wires don't rub across the top of the elevator servo arm. I had to add additional spacers to get good clearance. I also used some heat-shrink tubing on the ends of the wires prevent the wire lock (copper tube) from snagging on the elevator servo arm.
This is not my model but you can see the location of the servos in the servo tray. The instruction sheet does not show anything mounted in the outboard servo holes.
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RE: CMPro Lancair
Read about the CA hinges. I didn't notice a problem with them and I've already installed mine, did anyone have a problem with them with the new version of this Lancair. Just want to make sure or redo them.
Thanks
Thanks
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RE: CMPro Lancair
Has anybody had any issues with engine overheating and can anybody give their thoughts on airflow around the engine on this model?..I am going to run an os46ax. Joe
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RE: CMPro Lancair
Joee75. I run an OS46AX in my beasty and it has more than enough grunt to pull the Lancair around like a pylon racer. Ive not had any overheating issues with my AX, but I do tend to run it a bit richer than I normally would for this motor. My AX is completely covered by the cowl - not even the head is exposed and I access the glow plug through a small hole in the cowl and a long glow plug. I also start up in or near the pilot area to eliminate long taxiing to the strip to keep the engine cool. Once in the air there seems to be enough air flow to keep things running O/k
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RE: CMPro Lancair
Thanks Bjor, I thought it would be ok, I will take on your advice..one question, i have never heard of the long glow plugs, are they something readily available? I am still learning the tricks of this awesome hobby.
Thanks. Joe
Thanks. Joe
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RE: CMPro Lancair
ORIGINAL: joee75
Thanks Bjor, I thought it would be ok, I will take on your advice..one question, i have never heard of the long glow plugs, are they something readily available? I am still learning the tricks of this awesome hobby.
Thanks. Joe
Thanks Bjor, I thought it would be ok, I will take on your advice..one question, i have never heard of the long glow plugs, are they something readily available? I am still learning the tricks of this awesome hobby.
Thanks. Joe
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RE: CMPro Lancair
Sorry Joee75. A long glow plug starter was exaclty what I meant. This allows me to have a smallish hole in the cowl just large enough to allow me to place it onto the glow plug on the engine head. Thanks iFLYrc_Vic.
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RE: CMPro Lancair
Wow, yours looks just like mine. My plane has the OS46SF engine and a Slimline Pitts style muffler. I broke in the engine with a coulpe of 10 oz tanks on the stock muffler. It runs very good with the pitts muffler with one of the exhaust tubes plugged.
I also installed the nose wheel strut cover and wheel pant but I don't know how long it is going to last on my grass field. I took it out for some high speed taxi runs and the nose wheel was "working" pretty hard[:-]. Just waiting for a good day to do the maiden.
I also installed the nose wheel strut cover and wheel pant but I don't know how long it is going to last on my grass field. I took it out for some high speed taxi runs and the nose wheel was "working" pretty hard[:-]. Just waiting for a good day to do the maiden.
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RE: CMPro Lancair
I used a Slimline Pitts muffler as well. chopped the pipes closer to the cowl. I have a Great Planes P51 ARF. Been flying this model for years. I use the Pitts muffler there as well. Never plugged the pipe and runs fine. What did you use to plug the pipe? May try that if needed.
There is no information on any control surface throws for this model anywhere on the instruction sheet. Someone here suggested throws, but I don't know about Elevator throws 15-20mm. Seems quite a bit for this model... I would think 8-12mm might be a bit less sensitive. Any rate, I always setup for initial flights with at least 2 different throws set in D/R with 50% Expo.
Anyone have practical results for the throws from flight evaluations?
I setup the ailerons for just 5% differential for first flights,
There is no information on any control surface throws for this model anywhere on the instruction sheet. Someone here suggested throws, but I don't know about Elevator throws 15-20mm. Seems quite a bit for this model... I would think 8-12mm might be a bit less sensitive. Any rate, I always setup for initial flights with at least 2 different throws set in D/R with 50% Expo.
Anyone have practical results for the throws from flight evaluations?
I setup the ailerons for just 5% differential for first flights,