Feral Beast AH-64

Pappy K · Posted: Sat Mar 05, 2011 7:36 pm Post subject: Feral Beast AH-64

Hi Y'all:

Well I received my new 4in1 controller for this animal and installed it. This one came as a 72MHz - so I changed the crystal in the Tx to the 72MHz supplied.

Turned on the Tx and then plugged in the Rx - Well the little LED alternately blinks red and green as if it is trying to receive from the transmitter; but, that is all that happens.

Throttle is zero'd as is the throttle trim.

Any ideas from the peanut gallery out there??

Really want to see this thing fly again. Waiting for blades for my Lama400D and Tom, if you read this - need help in reassembling the Sea King.

Kirk
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tombo242 · Posted: Sat Mar 05, 2011 8:05 pm Post subject:

Hi Kirk,

What was the original frequency band of the Tx? You can't - for instance - put a 72 kHz crystal into a 40 kHz Tx and expect it to work. The coils etc would be all wrong for the new frequency band.

You can only change channels with crystals not frequency bands.

Tom.
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Pappy K · Posted: Sun Mar 06, 2011 6:41 am Post subject:

Tom: The new RX came with a pair of 72MHz crystals - put one in the TX and one in the RX.
_________________
You can teach and Old Dog New Tricks -or-
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Pappy K · Posted: Mon Mar 14, 2011 7:36 pm Post subject:

Hey Tom:

The transmitter that came with this heli was 40MHz - When they sent me the new 4in1 thingo they sent it with a 72MHz chip installed and a spare to put in the transmitter which I did.

I am assuming that the insides of the transmitter itself simply depends on the chip inserted and the internal workings are not dependent on a particular frequency. Would this be correct? If the Tx and Rx chips are the same frequency it should work; Right?

Anyway, all I still get is the LED blinking on and off, red and white. Quite pretty visually; however, does not do much for flying Smile

Kirk
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You can teach and Old Dog New Tricks -or-
Don't Give Up Until a Dead Horse Kicks You!

tombo242 · Posted: Mon Mar 14, 2011 8:08 pm Post subject:

Pappy K · Posted: Tue Mar 15, 2011 6:24 am Post subject:

I'snt Ignorance Bliss Embarassed

What can I say, I thought the internals were the same and the crystal was the driver. Oh Well Rolling Eyes

back to the drawing board. When I look back at this thread I realize that, Tom, you told me this the first time and I did not take it in.

DAMN - Anyone out there have any use for a 72MHz 4in1??

So Tom, how did you manage to change to a 2.4? You said you did it to one of your's. This heli cost $75 so I guess it is not worth the effort. Hate to just give up - Keep thinking about that Dead Horse Crying or Very sad

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You can teach and Old Dog New Tricks -or-
Don't Give Up Until a Dead Horse Kicks You!

tombo242 · Posted: Tue Mar 15, 2011 9:21 am Post subject:

I've converted 2 co-axials to 2.4gHz just need an Rx. I've used this clone:
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=11965
and another which seems to be out of production now.

Of course I'm on Spectrum, not sure about Futaba, but it can't be much different. All you need to swap is the Rx part of the 4-in-1. The Rx is usually held to a 3-in-1 inside the card wrapper. Might be a "Talk on Skype" job to get it sorted first though. Major problem is the mixing required as the 3-in-1s' do not respond to the rudder channel. (Cuts out the power!) You have to use mixing and the Rx gear channel to rudder to get it to work.

The only thing I do not have on 2.4gHz is my RC yacht, all 4 helis and my fixed wings are upgraded to 2.4gHz.

Tom.
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Pappy K · Posted: Tue Mar 15, 2011 1:40 pm Post subject:

Well Tom, this is the only thing I have that is not 2.4. I am beginning to think I should just cut my loss and leave it. I would have to have a Walkera Rx and that is probably going to cost about 30 odd bucks and then anything else I might need. I have already spent 40 bucks on a 4in1 that I can't use. Bit of a shame but no point in pouring good money after bad.

Kinda like a boat is a hole in the water that you keep pouring money into Exclamation

Kirk
_________________
You can teach and Old Dog New Tricks -or-
Don't Give Up Until a Dead Horse Kicks You!

tombo242 · Posted: Tue Mar 15, 2011 5:07 pm Post subject:

Don't give up the ship yet Kirk,

Like I said; often the 4-in-1s' are a 3-in-1 and an Rx stuck together in a common wrapper. See this pic of the ESKY 4-in-1:

The connector just snaps in, unplug and you have a 3-in-1 and separate Rx. The RX can then be replaced with another, maybe your old Rx section was OK and it was just the 3-in-1 part burned out.

If you're scrapping it anyway what have you got to loose?

Tom.
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Pappy K · Posted: Tue Mar 15, 2011 7:44 pm Post subject:

Tom:

I will take some photos tomorrow and show you what I have. Going to bed now, your probably just getting up.

Kirk
_________________
You can teach and Old Dog New Tricks -or-
Don't Give Up Until a Dead Horse Kicks You!