Xicoy CG machine measurements
I am putting a together this thread to gather measurements for this new tool.
My hope is over time we can eliminate the guess work for models currently flying and for those to coming out. This is just to get you started and all CGs should be per the manufactures instruction. Feel free to post your finds even if the same jet has already been posted, this way if a few people have good results with a cg people can have options and know what works. This will maybe take some of the guess work out and help prevent any high adventure maidens :D Cheers! So for my first entry I would like to add the Excalibur sport jet to the list. Distance Front-Mains 620mm Distance Mains-CG 80mm Distance mains to weight placement 890mm Tricycle |
Hi - I will re-measure, but I get slightly different numbers.
Fronts to Mains 606m C of G 65 mm forward of main wheel axle Wt to be added 706 mm forward of main wheels (this is front side of forward bulkhead as I will need to add about 400 gm). Not sure if the differences might be due to different squat angles of wheels, or differences in levelling tolerances? I think that this thread will be a great help to those of us using the Xicoy cg system - thanks for starting it. |
Awesome, thats exactly why I wanted to do this. I figured people will come up with slightly different values and this way I can give a safe cg/measurement range for each model. The biggest differencer will be the measurement from mains to weight location since everyone will may have a different place they add weight. Cheers!
Originally Posted by ColinW
(Post 12076044)
Hi - I will re-measure, but I get slightly different numbers.
Fronts to Mains 606m C of G 65 mm forward of main wheel axle Wt to be added 706 mm forward of main wheels (this is front side of forward bulkhead as I will need to add about 400 gm). Not sure if the differences might be due to different squat angles of wheels, or differences in levelling tolerances? I think that this thread will be a great help to those of us using the Xicoy cg system - thanks for starting it. |
Skymaster 1/7 Scale F-14 (Thanks Murray ;))
Distance Front-Mains 920mm Distance Mains-CG 177mm Distance mains to weight placement 1237mm Tricycle This is for the CG recommended by Skymaster, I know of two other F-14s that are using a cg right on the front spare as well. I will post those measurements once I can get mine done |
Fei Bao Mirage 2000
Distance Front-Mains 815mm Distance Mains-CG 80mm Distance mains to weight placement 1200mm Tricycle The person that posted this changed the main tank to a round and put it over the CG. It helped eliminate the jump and gave smooth landings https://www.youtube.com/watch?v=ueBPgnsqtCA#t=350 |
Pirotti/ Elite Aerosprot Rebel Pro (coming soon)
Distance Front-Mains mm Distance Mains-CG mm Distance mains to weight placement mm Tricycle |
Pirotti Rebel Pro
Distance Front-Mains - 985mm Distance Mains-CG - 55mm Distance mains to weight placement - 1385mm Tricycle Elite Aerosports Shockwave Distance Front-Mains - 990mm Distance Mains-CG - 65mm Distance mains to weight placement - 1250mm Carf Viper Distance Front-Mains - 1080mm Distance Mains-CG - 110mm Distance mains to weight placement - 1190mm |
awesome thanks for you data, saved me measuring the Rebel Pro, sorry for the delayed response.
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Okay so I got the new gen Xicoy balance gen 3 I think and it is much better seems very accurate compared to my old one. I checked my rebel with the # and mine showed about .23lbs needed to balance the jet. It was showing a little tail heavy but I figured that sense I moved my CG back about 1/2 inch per Elites recommendation and with the bigggggg fuel tank full it will be nose heavy for sure so im going to leave it.
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So hes updated the scales? Is it software or hardware?
I'm not using the scales at the moment, i'm not sure i trust them to be honest. I had considered getting a calibration weight. Any advice is appreciated. On my RebPro the CG that makes the plane so sweet is waaaaaaaay aft of the recommended spot. 2S 5000's are the area between the gear formers, and my ECU pack is on a tray I built basically under the FOD screen, no smoke in mine obviously. |
Originally Posted by kohersh
(Post 12174316)
So hes updated the scales? Is it software or hardware?
I'm not using the scales at the moment, i'm not sure i trust them to be honest. I had considered getting a calibration weight. Any advice is appreciated. On my RebPro the CG that makes the plane so sweet is waaaaaaaay aft of the recommended spot. 2S 5000's are the area between the gear formers, and my ECU pack is on a tray I built basically under the FOD screen, no smoke in mine obviously. |
I am also putting together a Xcalibur. I have the CG balancer with angle sensors, but have had no time to play with it. Planning to spend my weekend on airplane stuff. I'll measure up the Xcalibur and post what I find, as it looks like there are some slightly different measurements mentioned here.
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That was part of the point to this, this will help get rid of slight measuring errors.
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Im going to make a jig that will give me exact messurements. I will post pics when done. this may help us get exact measurements for the xicoy data base
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Sub'd. I'll post measurements soon.
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Krill Avanti
802, 39, 1066 Skymaster 1/5th F-16 843, 170, 1524 |
Thanks
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I'm looking for the numbers for FB 2.5 m Viper, thanks.
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Kieth you coming to the afterburner?
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Originally Posted by voodoodb
(Post 12320947)
Kieth you coming to the afterburner?
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Hey Keith, you have the updated measurements for the F-14? Thanks.
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Originally Posted by Flightwerkz
(Post 12345171)
Hey Keith, you have the updated measurements for the F-14? Thanks.
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Does anyone have the measurements for a 2.2M Pilot Predator?
Jason |
Does anyone have measurements for the Velox XL? Thanks
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Hoping to bring this thread back. Anyone have measurements for the skymaster viper mk2? |
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