need help with torque roll....
08-08-2010 | 06:44 PM
#1
Thread Starter
need help with torque roll....
i recently got a skyartec funjet. its a decent RTF pusher jet.
it was alittle underpowered, but i put a 7x5 prop(stock was a 6x4) and that helped alot.
but there is noticable torque roll(to the left)
i know that on my dynam cub and HZ super cub the prop shaft is angled to help counter-act the torque roll.
can anyone tell me how i should angle my motor to help counter-act the torque roll?
its not terrible now, but i plan on putting a 3200kv motor in place of the 1800kv motor. im guessing that a more powerful motor might increase the torque roll.
i gotta say, this plane is FUN! even tho its still alittle underpowered, i can do some sweet rolls-stall turns- and even alittle high alfa(needs more power tho)
i will try to get a vid of it as it is stock(with the better prop)
"pic is just to let you know what plane im talking about, pic was before i put it together"
it was alittle underpowered, but i put a 7x5 prop(stock was a 6x4) and that helped alot.
but there is noticable torque roll(to the left)
i know that on my dynam cub and HZ super cub the prop shaft is angled to help counter-act the torque roll.
can anyone tell me how i should angle my motor to help counter-act the torque roll?
its not terrible now, but i plan on putting a 3200kv motor in place of the 1800kv motor. im guessing that a more powerful motor might increase the torque roll.
i gotta say, this plane is FUN! even tho its still alittle underpowered, i can do some sweet rolls-stall turns- and even alittle high alfa(needs more power tho)
i will try to get a vid of it as it is stock(with the better prop)
"pic is just to let you know what plane im talking about, pic was before i put it together"
08-08-2010 | 07:58 PM
#2
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From: Lakeland,
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RE: need help with torque roll....
Even thou the motor is backwards mounted, you will be adding the shim or angle to the left side, looking at it from the rear. This adds left thrust to the prop which will help push the nose right.
Note on your hop up motor,3200 kv. You'll have to run a smaller prop on it, like a 5x4, anything more is going to be a huge amp hog. You'll have lots of speed, but will take a bit for it to get there, and you will loose some thrust. That's more of a motor for an EDF or a heli that uses gearing.
Your 1800kv motor if it can take it would be a lot better choice by jumping the pack to a 4S from a 3S. Just match the prop so that your amp draw is similar to what you had with the original set up. That way you won't damage the motor or esc.
Something else. I saw your pack info, if the pack is a 20C pack it's only good for 22 amps, if it's 15C it's good for 16.5 amps, 10C is 11 amps, so anything over that will put a hurting on it. Rule of thumb is to run 80% max amp draw for the packs capacity for best life of the pack.
Note on your hop up motor,3200 kv. You'll have to run a smaller prop on it, like a 5x4, anything more is going to be a huge amp hog. You'll have lots of speed, but will take a bit for it to get there, and you will loose some thrust. That's more of a motor for an EDF or a heli that uses gearing.
Your 1800kv motor if it can take it would be a lot better choice by jumping the pack to a 4S from a 3S. Just match the prop so that your amp draw is similar to what you had with the original set up. That way you won't damage the motor or esc.
Something else. I saw your pack info, if the pack is a 20C pack it's only good for 22 amps, if it's 15C it's good for 16.5 amps, 10C is 11 amps, so anything over that will put a hurting on it. Rule of thumb is to run 80% max amp draw for the packs capacity for best life of the pack.
08-09-2010 | 10:38 AM
#3
Thread Starter
RE: need help with torque roll....
ORIGINAL: Glacier Girl
Even thou the motor is backwards mounted, you will be adding the shim or angle to the left side, looking at it from the rear. This adds left thrust to the prop which will help push the nose right.
Note on your hop up motor,3200 kv. You'll have to run a smaller prop on it, like a 5x4, anything more is going to be a huge amp hog. You'll have lots of speed, but will take a bit for it to get there, and you will loose some thrust. That's more of a motor for an EDF or a heli that uses gearing.
Your 1800kv motor if it can take it would be a lot better choice by jumping the pack to a 4S from a 3S. Just match the prop so that your amp draw is similar to what you had with the original set up. That way you won't damage the motor or esc.
Something else. I saw your pack info, if the pack is a 20C pack it's only good for 22 amps, if it's 15C it's good for 16.5 amps, 10C is 11 amps, so anything over that will put a hurting on it. Rule of thumb is to run 80% max amp draw for the packs capacity for best life of the pack.
Even thou the motor is backwards mounted, you will be adding the shim or angle to the left side, looking at it from the rear. This adds left thrust to the prop which will help push the nose right.
Note on your hop up motor,3200 kv. You'll have to run a smaller prop on it, like a 5x4, anything more is going to be a huge amp hog. You'll have lots of speed, but will take a bit for it to get there, and you will loose some thrust. That's more of a motor for an EDF or a heli that uses gearing.
Your 1800kv motor if it can take it would be a lot better choice by jumping the pack to a 4S from a 3S. Just match the prop so that your amp draw is similar to what you had with the original set up. That way you won't damage the motor or esc.
Something else. I saw your pack info, if the pack is a 20C pack it's only good for 22 amps, if it's 15C it's good for 16.5 amps, 10C is 11 amps, so anything over that will put a hurting on it. Rule of thumb is to run 80% max amp draw for the packs capacity for best life of the pack.
the ESC i bought with the 3200kv motor is 30amp, and i also bought a 3s 2200mah 30c pack to go with it.
i get what you are saying about using a smaller diameter prop with the higher KV motor tho. even with the 1800kv motor and 7x5 prop i have now there is more speed than thrust. it takes a second to recover from a stall, unlike my dynam cub. that thing has way more thrust, but sports a 9x5 prop.
