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CP3 Pro Mod!!!!


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Astraman
Hover Master
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Joined: 27 Mar 2012
Posts: 11
Location: cambridgeshire, England

PostPosted: Sat Apr 14, 2012 7:19 pm
PostPost subject: CP3 Pro Mod!!!!
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Hi have a Cp3 Pro, Never had such a crazy Heli, Fitted is the 3 in1 Unit load of Rubbish, i have a spektrum DS6I With Ar6210, has anybody ever Replace with Gyro Etc, my only concern is the power and control of Rudder if anyone can throw any help this way
Thanks
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tombo242
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Joined: 04 Nov 2008
Posts: 4718
Location: Santo Estêvão, East Algarve, Portugal. Now 82, but still feels 22.

PostPosted: Sun Apr 15, 2012 12:54 am
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Hi Astraman,

Never done this on a tail motor heli (never had one, never want one) but as I see it the gyro would have to drive an ESC for the tail motor instead of the usual tail servo. The existing one is almost certainly a brushed motor and you could use this chance to upgrade it to a brushless motor. Might even be cheaper in the long run as brushed ESCs tend to be much dearer than brushless - IF you can get one of the right size. The indoor sub-micro planes use some very small brushless motors and ESCs so you could look there.

Here's a pic of the brushless motor I'm using in a sub-micro P51:
Click for full size.)

Here's where I got two of them.

As you can see it is only 13.4mm in diameter, only weighs a few grams and barely hits 10 grams together with its' ESC.

Your existing servos should be no problem driven direct from the new Rx, it's the tail that may be the problem. Be an interesting project for you.

Tom.
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Astraman
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Joined: 27 Mar 2012
Posts: 11
Location: cambridgeshire, England

PostPosted: Sun Apr 15, 2012 4:19 pm
PostPost subject: CP3 Mod
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Hi Tom, the brushless motor and ESC are no problem for the upgrade, before i go down that line i am going to see if i can resolve the 3-1 system, i wish i had never purchased this but we all learn by our mistakes !, But then again that's the enjoyment of the hobbie, like to get the brain working, i also have a walkera Hiko 400 likes nice flys well.
Thanks for the reply i will solve it but as they say 2 heads are better then one for these sticky little Problems ?.

Tim
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tombo242
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Joined: 04 Nov 2008
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Location: Santo Estêvão, East Algarve, Portugal. Now 82, but still feels 22.

PostPosted: Sun Apr 15, 2012 5:27 pm
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Hi Tim,

I am assuming that this is the model you have.

If so then the three servos will connect straight to the radio along with the ESC. The gyro will plug into the Rx rudder channel the single wire into the Rx gear channel (works the HH and Rate modes) and the servo lead connector to the tail motor ESC. The 3-in-1 is now redundant.

Hope this helps, it's the way I connect with Spektrum RC it on my helis.

Tom.
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Astraman
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Joined: 27 Mar 2012
Posts: 11
Location: cambridgeshire, England

PostPosted: Sun Apr 15, 2012 11:10 pm
PostPost subject: CP3 Mods
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Hi Tom,

Mine's CP3 Pro has all Metal Upgrades but yes same model, Thanks for your feedback, Now trying to resolve problem on my Walkera Hiko 400 Drive belt rides off L/H guide roller, think i spend more time sorting faults then Flying Ha" But then a again i enjoy the mechanics part of the Hobby.

Take care Tim
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tombo242
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Joined: 04 Nov 2008
Posts: 4718
Location: Santo Estêvão, East Algarve, Portugal. Now 82, but still feels 22.

PostPosted: Sun Apr 15, 2012 11:24 pm
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Hi Tim,

Yes, I've seen that post, I agree with the angle of the roller suggestion. (Was it Admiral?) The belt would have to be very slack otherwise.

Tom.
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