How do I increase my lift on a Flamewheel 450

[kloner]

it doesn't need arm extensions to swing 12" it max's out at 10".....

OP, t-motor 2814 1100kv...... good choice for what your asking to do.....

 

[bensid54]

you mean 'lower', right?


I checked dji and Im guessing you are giving the motor dimensions not the kv e.g. you have dji 2212 which are the dimensions of the motor. Those 2212 are e.g. 920 KV which go well with 10-11" props. So IF you have those than you could try 11" props, according to my calculator they should fit (if you gave the correct specs) and the 920KV should be able to handle those.
The next thing you can check is to see what battery type your motors can handle (check the specs). I'm guessing (but you REALLY should check this) 3s/4s. IF you have 3s batteries then you can go for the 4s so your motors can better handle the new props. (check with ecalc)

My calculator also tells me that your rig *should* be able to handle 12" props (but that's cutting it really close so maybe wiser not to). If you go for that then you need something around 760KV motors and higher S batteries (5 or 6S but not sure so check with ecalc).

Yes this is what I have presently, so from what you are saying I can get an improved lift by changing to 11 inch props with four cell batteries. The saucer body will be more like a foam bumper around the perimeter with black aluminum screen between that and the foam centre. I don't think weight will be as much of an issue as wind resistance will be. I understand the concept of torque versus RPM due to the fact I have been a Heavy Duty Mechanic for the last 35 years but a multi rotor pilot for one. A good way to look at torque is this, gas powered machines measure horsepower with racehorses, fast but not a lot of pulling power I.E. less torque or twisting power. Diesel machines measure their horsepower with Clydesdales, slow but with plenty of pull I.E. more torque or twisting power. Horsepower uses three calculations they are time, weight and distance the later of the three remains constant but time and weight can be altered. You can increase weight and lower speed or increase speed and lower weight the end result can equal the same calculation for horsepower.

 

[wolph42]

Yup that's it. As I said: check with ecalc! Also someone mentioned that your female should be able to handle 12" props so you can go with those as well. According to my calc that leaves roughly 1 inch between the tips of the blades. (Which is a bit close). Also check if your motors can handle 4s lipos.

 

[bensid54]

I believe DJI systems can use up to four cell batteries max. Now if I increase voltage using four cell batteries the instructions say to use 8 inch blades due to higher motor RPM. Is it possible the Naza light can only work properly with the two configurations? I know when I used it in my DJI hex the controller seemed to have trouble with stability could I be asking for trouble if I deviate from what DJI recommends for motor, battery and prop combinations?

 

[wolph42]

I believe DJI systems can use up to four cell batteries max. Now if I increase voltage using four cell batteries the instructions say to use 8 inch blades due to higher motor RPM. Is it possible the Naza light can only work properly with the two configurations? I know when I used it in my DJI hex the controller seemed to have trouble with stability could I be asking for trouble if I deviate from what DJI recommends for motor, battery and prop combinations?

this is beyond my knowledge and someone who actually has some experience should answer this. Stab in the dark though: if your craft is too light (or your thrust is too high hover < 50% thrust) your craft becomes unstable. Its a bit like cramming a porche engine into a dinky toy. However other factors may play a roll like the wheelbase of your craft vs the diameter of the props. I have no idea is there is a (significant) relation between the two that might influence stability. But my biggest guess is AUW vs throttle. Too little (thrust) and the craft either can't get of the ground or is too slow for manouvres, too much and the craft becomes unstable and potentially unflyable.