Tsunami wrote:
> "Kevin" <dontemailme@[EMAIL PROTECTED]
> wrote in message
> news:JupPj.94794$5i5.44141@[EMAIL PROTECTED]
>> Tsunami wrote:
>>> "Kevin" <dontemailme@[EMAIL PROTECTED]
> wrote in message
>>> news:bIiOj.18144$B83.12302@[EMAIL PROTECTED]
>>>> Tsunami wrote:
>>>>> "Kevin" <dontemailme@[EMAIL PROTECTED]
> wrote in message
>>>>> news:lYXNj.91255$5i5.86099@[EMAIL PROTECTED]
>>>>>> Skywise wrote:
>>>>>>> Kevin <dontemailme@[EMAIL PROTECTED]
> wrote in
>>>>> news:RGLNj.68714$jH5.60310@[EMAIL PROTECTED]
>>>>>>> win.ntli.net:
>>>>>>>
>>>>>>>> I did wonder if one set of blades is binding and its the gyro is
>>>>> keeping
>>>>>>>> it straight and its the binding on one set that's producing more
>>>>> torque?
>>>>>>> I can see that if one set is binding, then the controller would
>>>>>>> have trouble speeding that set up. The net result would be the
>>>>>>> same as my previous explanation.
>>>>>>>
>>>>>>> Brian
>>>>>> I had another play last night and it rotates quicker in the
opposite
>>>>>> direction to the top set of blades with the flybar, this has quite
>>> heavy
>>>>>> weights so it might just be down to pure physics that this set
takes
>>>>>> more power to spin
>>>>>>
>>>>>> --
>>>>>> Kevin R
>>>>>> Reply address works
>>>>> It is 100% normal and is common to all heli's.
>>>>> It "wants to spin" one way so it will always yaw faster in that
>>> direction...
>>>>> even ona real heli.
>>>>> If it hovers with no yaw, don't touch anything.
>>>>>
>>>>>
>>>> this if you don't know the model is contra rotating coaxial design
with
>>>> no tail rotor, so in theory should spin equally well in both
directions
>>>> if both sets of blades have equal mass and drag
>>>>
>>>> --
>>>> Kevin R
>>>> Reply address works
>>> No it is still the case with coaxial heli's as only one set of blades
>>> changes speed. It is quicker and easier to slow down a set than it is
to
>>> speed them up. Thus all CX2's will rotate fater one way then the
other.
> Yes,
>>> technically it is a different reason ..... but same effect as other
> heli's
>>>
>> that makes no sense, if for example to turn one way it slows the top
set
>> down and to turn the other the bottom set slows down, if all things are
>> equal why would one set slow down quicker?
>> in a stable hover both sets need to rotate the same speed, correct?
>> and to turn if you only slow one set down the lift will decrease and
the
>> helicopter will drop which it does not seem to, if anything the
>> direction it turns faster in one motor speeds up more
>>
>> --
>> Kevin R
>> Reply address works
>
> I never said " to turn one way it slows the top set
>> down and to turn the other the bottom set slows down"......... I am
told
> by the expert at my local hobby store that only one set of blades
changes
> speed. Slows down and speeds up.
not the case if you hold full rudder and apply power only one set of
blades move, hold the rudder the other way and the other set of blades
rotate and if you move the rudder back to central one set speeds up the
other slows down, try it before you have enough power to take off and
you can see
That makes sense as all CX2's yaw one way
> faster than the other.
> The CX2's do drop, if you rotate (yaw) for couple secs it loses altitude
>
> What the OP describes is the same as every CX2 I've seen (a few) so I
was
> just telling him there is nothing wrong with it (he rec'd advice here
to
> play with the 4 in 1 propo trimpot because it yaws one way faster than
the
> other, and I doubt that is necessary, it is normal).
>
>
--
Kevin R
Reply address works
|
