Introducing the Top RC Model Odyssey - New sport jet - build thread
11-13-2018, 02:39 AM
#351
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ok thanks for letting me know. I’ll probably put mine in same location then.
Ill use it there and balance with battery locations once I fly it. Just want to start out with everything in the best location for first flight.
Thanks again for your answer.
Ill use it there and balance with battery locations once I fly it. Just want to start out with everything in the best location for first flight.
Thanks again for your answer.
11-15-2018, 01:13 PM
#352
ID3M, how is the TopRC landing gears holding up. I have the Robart landing gears and very disappointed. I think it was designed for a 12lbs models, not 30lbs. Extremely flimsy. I have to land extremely soft for it not to bend or twist. A little bounce, it'll get destroyed and damaged the plane. I have a couples of Robart gears for different planes, very disappointed on all of them.
From the your pictures of the gears, they look very heavy duty. I may need to spend $800 to get the new gears. I can't seem to find the struts from other manufacturer to fit the robart for this plane.
From the your pictures of the gears, they look very heavy duty. I may need to spend $800 to get the new gears. I can't seem to find the struts from other manufacturer to fit the robart for this plane.
11-15-2018, 01:14 PM
#353
ID3M, how is the TopRC landing gears holding up. I have the Robart landing gears and very disappointed. I think it was designed for a 12lbs models, not 30lbs. Extremely flimsy. I have to land extremely soft for it not to bend or twist. A little bounce, it'll get destroyed and damaged the plane. I have a couples of Robart gears for different planes, very disappointed on all of them.
From the your pictures of the gears, they look very heavy duty. I may need to spend $800 to get the new gears. I can't seem to find the struts from other manufacturer to fit the robart for this plane.
From the your pictures of the gears, they look very heavy duty. I may need to spend $800 to get the new gears. I can't seem to find the struts from other manufacturer to fit the robart for this plane.
11-15-2018, 02:39 PM
#354
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stock gear seems good just make sure the lead for the retracts or brakes you use does not share a red or blk lead with any servos in the harness...
pro links and behotec are very nice gear sets also.....
but you are correct no robarts in larger planes for me either. had too many failures of the thin wall strut tubes they use.
pro links and behotec are very nice gear sets also.....
but you are correct no robarts in larger planes for me either. had too many failures of the thin wall strut tubes they use.
11-28-2018, 07:36 AM
#355
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adding a copy of my post:
Hello Guys,
i would like to share my CG / Throws settings for the Odyssey Sport Jet. these settings would help anyone who is building one have a good starting point.
Note: All measurements are taken at control surface root.
Ailerons: 28mm both ways (will probably add some differential in the future), 45% Expo
Elevator: 28mm both ways, 30% Expo
Rudder: 50mm both ways, 30% Expo
Flaps Takeoff: 25mm with 2mm down elevator compensation
Flaps Landing: 80mm with 4mm down elevator compensation
Cortex Gyro gain: 60%
CG: currently 220mm back from leading edge at wing root, i recommend starting with 215mm.
Total weight with UAT full, full cockpit + pilot figure, 5000 mAh 2S Lipo hardcase Turbine battery and two 2200mAh 2S Lipo Rx batteries - 13.97Kg.
For me these settings make a very easy to fly, very predictable Jet.
I do hope they help others as well.
Thanks for reading,
Lior Zahavi
Edit 16/12/17:
I have tested crow mix with full flaps and it works very well on the Odyssey, and these are the numbers:
with full flaps applied, the ailerons go UP 12.5mm (measured at root) and elevator compensation increases to 7mm down measured at root.
this gives you much more drag, model descends and slows down faster and stall speed is even lower - it works great and is highly recommended.
Hello Guys,
i would like to share my CG / Throws settings for the Odyssey Sport Jet. these settings would help anyone who is building one have a good starting point.
Note: All measurements are taken at control surface root.
Ailerons: 28mm both ways (will probably add some differential in the future), 45% Expo
Elevator: 28mm both ways, 30% Expo
Rudder: 50mm both ways, 30% Expo
Flaps Takeoff: 25mm with 2mm down elevator compensation
Flaps Landing: 80mm with 4mm down elevator compensation
Cortex Gyro gain: 60%
CG: currently 220mm back from leading edge at wing root, i recommend starting with 215mm.
Total weight with UAT full, full cockpit + pilot figure, 5000 mAh 2S Lipo hardcase Turbine battery and two 2200mAh 2S Lipo Rx batteries - 13.97Kg.
For me these settings make a very easy to fly, very predictable Jet.
I do hope they help others as well.
Thanks for reading,
Lior Zahavi
Edit 16/12/17:
I have tested crow mix with full flaps and it works very well on the Odyssey, and these are the numbers:
with full flaps applied, the ailerons go UP 12.5mm (measured at root) and elevator compensation increases to 7mm down measured at root.
this gives you much more drag, model descends and slows down faster and stall speed is even lower - it works great and is highly recommended.
I have a couple questions about the Cortex Gyro gain at 60%. Are you talking this at normal mode ? or hold mode ?
Also did you use the Cortex with the crow setup when landing ?
I am setting mine now, then all I will need is to check CG, and mine will be ready to fly.
12-10-2018, 06:51 AM
#362
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Question for i3dm. I used your info you posted on your Xicoy CG machine. I am using the same machine.
I was curious if the numbers you used made your CG come out at 215mm or 200mm, which you mentioned were good settings ?
Mine ended up 0.21 lb nose heavy, which sounds good to me for a maiden. You agree. Thanks
I was curious if the numbers you used made your CG come out at 215mm or 200mm, which you mentioned were good settings ?
Mine ended up 0.21 lb nose heavy, which sounds good to me for a maiden. You agree. Thanks
12-10-2018, 08:38 AM
#363
Question for i3dm. I used your info you posted on your Xicoy CG machine. I am using the same machine.
I was curious if the numbers you used made your CG come out at 215mm or 200mm, which you mentioned were good settings ?
Mine ended up 0.21 lb nose heavy, which sounds good to me for a maiden. You agree. Thanks
I was curious if the numbers you used made your CG come out at 215mm or 200mm, which you mentioned were good settings ?
Mine ended up 0.21 lb nose heavy, which sounds good to me for a maiden. You agree. Thanks
Lior.
12-10-2018, 11:13 AM
#365
I will test mine this week and I will see if I need add lead.
i will install the original tanks of the kit in serial, I have Electron Retracts installed.
You can find specific tank in my website:
https://cmjets.com/31-toprc-model
Regards from Spain.
Carlos
i will install the original tanks of the kit in serial, I have Electron Retracts installed.
You can find specific tank in my website:
https://cmjets.com/31-toprc-model
Regards from Spain.
Carlos
12-10-2018, 01:08 PM
#366
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This is inside mine. I have 4 batteries up front, and still had to add 12oz, real bummer. Puts CG at 215 so hopefully I can take some out after flying. I did have the UAT full when checking.
12-10-2018, 02:08 PM
#369
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I also read one guy put 3 or 4 batterys all the way up in the nose. So I’m not sure what to expect
hope I can remove the weight after maiden. We shall see when I get some decent weather.
hope I can remove the weight after maiden. We shall see when I get some decent weather.
12-10-2018, 05:10 PM
#370
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i just glued a plate in the nose for my batteries to ride on.. im getting close to the balance but i put my uat in front of the fuel tanks. im sure it would have gone better if it were in front like yours is.. but i wont add weight i will install larger battery packs first.
12-11-2018, 02:36 AM
#371
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i just glued a plate in the nose for my batteries to ride on.. im getting close to the balance but i put my uat in front of the fuel tanks. im sure it would have gone better if it were in front like yours is.. but i wont add weight i will install larger battery packs first.
I am hoping I can remove my weight after first flight. If not, it is what it is, but I would really like to remove the extra weight.
I have 3 - 2S-5000mah lipos, and 1 3S-3800mah life. Not going to add any bigger here, just added a little weight each side under the batteries.
Not only that, but now mine weights 33.9 lbs. well over the expected weight, disappointing. Was hoping for a light jet around 24-28lbs like advertised. I just keep hoping it flys well.
Last edited by RP-Stinger; 12-11-2018 at 02:43 AM.
12-11-2018, 12:25 PM
#372
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i just glued a plate in the nose for my batteries to ride on.. im getting close to the balance but i put my uat in front of the fuel tanks. im sure it would have gone better if it were in front like yours is.. but i wont add weight i will install larger battery packs first.
Maybe we can get them up together one day...
12-11-2018, 03:12 PM
#373
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29 1/4 pounds with uat full
i used hvy 8 ply plywood for the nose plate to sti batteries on. hysoled it in place with velcro on top. placed my 3800 3s lipo turbine pack and my 2s 1300ma lipo brake battery up there.
i have the rx dual packs on the sides of fuse where nose gear retracts. i think they are 2500ma each a123 type to a pwr safe 12ch spektrum
all that is left is the gyro setup and run the motor up.........next fair weather day free i will tackle that. i want to fly this first thing in the spring..i have an itch to fly this one.
i used hvy 8 ply plywood for the nose plate to sti batteries on. hysoled it in place with velcro on top. placed my 3800 3s lipo turbine pack and my 2s 1300ma lipo brake battery up there.
i have the rx dual packs on the sides of fuse where nose gear retracts. i think they are 2500ma each a123 type to a pwr safe 12ch spektrum
all that is left is the gyro setup and run the motor up.........next fair weather day free i will tackle that. i want to fly this first thing in the spring..i have an itch to fly this one.
12-11-2018, 04:12 PM
#374
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Sounds great. Much better weight too. Nice
I still need to run my motor, I’m using K160. I seen to have that itch I was thinking about going out this week. But probably won’t. Ah. Don’t know. Lol.
I still need to run my motor, I’m using K160. I seen to have that itch I was thinking about going out this week. But probably won’t. Ah. Don’t know. Lol.
12-12-2018, 03:25 AM
#375
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29 1/4 pounds with uat full
i used hvy 8 ply plywood for the nose plate to sti batteries on. hysoled it in place with velcro on top. placed my 3800 3s lipo turbine pack and my 2s 1300ma lipo brake battery up there.
i have the rx dual packs on the sides of fuse where nose gear retracts. i think they are 2500ma each a123 type to a pwr safe 12ch spektrum
all that is left is the gyro setup and run the motor up.........next fair weather day free i will tackle that. i want to fly this first thing in the spring..i have an itch to fly this one.
i used hvy 8 ply plywood for the nose plate to sti batteries on. hysoled it in place with velcro on top. placed my 3800 3s lipo turbine pack and my 2s 1300ma lipo brake battery up there.
i have the rx dual packs on the sides of fuse where nose gear retracts. i think they are 2500ma each a123 type to a pwr safe 12ch spektrum
all that is left is the gyro setup and run the motor up.........next fair weather day free i will tackle that. i want to fly this first thing in the spring..i have an itch to fly this one.
Did you use the same or something different ? Trying to figure out where my extra weight is, they are heavy really beefy gear.
Maybe different weight in the turbine, what turbine did you use ? I am puzzled, Thanks.