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Model Forum / Radio Controlled / Helicopters / January 2008



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trex 450 nodding

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R A - 30 Dec 2007 20:27 GMT
Hi just a quick question before I start to strip down my t rex 450. When
hovering its sit there nodding like a dogs head in the car :-). Has anyone
any instant thoughts i.e. blades etc. P.S it has not been crashed and was
flying fine a few months ago last time I got chance to fly it. I'm using the
wooden blades. this may be a lazy way of doing but I dont get a lot a play
time and was hoping to have new years day flying and not stripping and
getting no where :-)
Regards

Rob
Mitch Robbins - 31 Dec 2007 01:20 GMT
I know the items below can cause that on a trex

Head speed too low - also happens with a weak battery or toward the end of a
battery
Lube or swap out the head dampners
Blade grips too tight
Bent feathering shaft

> Hi just a quick question before I start to strip down my t rex 450. When
> hovering its sit there nodding like a dogs head in the car :-). Has anyone
[quoted text clipped - 6 lines]
>
> Rob
G-Dawg - 31 Dec 2007 01:42 GMT
>I know the items below can cause that on a trex
>
[quoted text clipped - 14 lines]
>>
>> Rob

I had the same problem and it was that the head speed was way too low. Check
the ESC immediately after as well, as it will probably be extremely hot from
all that work trying to keep it in the air.
R A - 17 Jan 2008 11:26 GMT
Sorry to take so long to reply, thank for help, I swapped the wood blades
for the carbon ones which where not as tight in the grips and all seems fine
Thanks again Rob

>>I know the items below can cause that on a trex
>>
[quoted text clipped - 18 lines]
> Check the ESC immediately after as well, as it will probably be extremely
> hot from all that work trying to keep it in the air.
Doughboi - 21 Jan 2008 02:33 GMT
Is your gyro gain connected to the receiver? Try disconnecting
it...Was happening to me also and this was the fix.

I'd be interested in knowing if that fixes it.

>Sorry to take so long to reply, thank for help, I swapped the wood blades
>for the carbon ones which where not as tight in the grips and all seems fine
[quoted text clipped - 22 lines]
>> Check the ESC immediately after as well, as it will probably be extremely
>> hot from all that work trying to keep it in the air.
Kevin - 21 Jan 2008 18:22 GMT
if you read the bit below your post you will be enlightened ????
> Is your gyro gain connected to the receiver? Try disconnecting
> it...Was happening to me also and this was the fix.
[quoted text clipped - 27 lines]
>>> Check the ESC immediately after as well, as it will probably be extremely
>>> hot from all that work trying to keep it in the air.
Doughboi - 22 Jan 2008 02:51 GMT
I guess I didn't see the part where Rob said "...all seems fine".

>if you read the bit below your post you will be enlightened ????
>> Is your gyro gain connected to the receiver? Try disconnecting
[quoted text clipped - 28 lines]
>>>> Check the ESC immediately after as well, as it will probably be extremely
>>>> hot from all that work trying to keep it in the air.
 
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