Hi all,

I have a pz t-28 trojan with the 5 channel ZX10 and recently I got the pnp strykerC. I am currently using an art-tech rx and tx from a wing dragon sportster just for testing purposes. I have flown the stryker several times with these electrics which is fine but from time to time I get glitching and I also have to re-seat the crystal in the rx everytime before I take off. I am now trying to decide the best way to get all my planes running off the same TX with minimal cost and better reliability.I was wondering can I get another reciever for the stryker that is compatible with the ZX10 and use this tx on both planes. If so would any1 recommend what rx to get. I tried swapping the crystals from the art-tech rx and putting it in the rx on the t28 but there was no response. Do I also have to get a certain type of crystal for the ZX10?What would you guys do in my position trying to keep the budget under €200?

Thanks

The crystal would have to be on the same channel as the Tx.

If you have €200 to spend you can get an excellent radio instead of that toy.

Have a look at this, it's only €89 w/ no servos, or €114 w/ 4 servos

http://www3.towerhobbies.com/cgi-bin...I=LXRXF3**&P=0

Or, you can get this one with no servos for €127 - with 4 servos for €146

http://www3.towerhobbies.com/cgi-bin...?&I=LXPZT8&P=0

thanks for the quick reply....

Would I have to replace the servos on both planes to use either of those options?

I swapped the crystals from the art -tech tx and rx and put them in the zx10 tx and rx but there was no response which made me think that I might need to get a specific make/model of crystal for the ZX10 tx/rx...Is this correct or can I simply put in any crystal into the tx/rx once they are the same channel?

thanks again and sorry for the noob questions

You should never swap crystals in a transmitter without having it checked by an expert. A transmitter needs to be "Tuned" to the crystal or you can have major problems.

I don't know what type of servo connectors you have, but if they are standard JR connectors, yes, they will plug right into a Futaba radio

First of all, we probably don't know what frequency you are operating on with that TX - RX combination. A google search comes up with motorcycles and telephones.. no RC transmitters.

More information is probably necessary, at least for me it is.

But, there is a solution to your problem, but it involves getting a different radio system. I don't know the availability of radio systems in Ireland, but perhaps you can order one from here. There are many available that have model memory. All of the major manufacturers, Airtronics, Spektrum, JR, Hitec, Futaba, Polk, even Tower, make radio systems with model memory... some more models than others, and the range of cost, for the basic systems, is around your price range (when converting the Euro over to US $$). You have an advantage over us in that realm.. the exchage rate is definitely in your favor.

Take a look at Tower Hobbies and Horizon Hobby and see if you can find something you like and within your price range.

CGr

Or this one, the Airtronics RDS8000, Tower price $229 which converts to 147.30 Euro.

http://www3.towerhobbies.com/cgi-bin...?&I=LXTZU7&P=7

the tx/rx from art-tech is 35mhz and the ZX10 is 35 MHz 5+ channel FM proportional....I presume if I bought a tx/rx from the US I would have the change the crystals to 35mhz...will this work?

Also the servo's on both planes are the standard 3 wire config...

thanks again for all you help....

I think I will check UK and ireland first for the rx/tx mentioned above

Changing the frequency is more than changing a crystal. The radios are made with an RF (Radio frequency) module to handle a specific frequency band, IE 35mhz or 72mhz. Within that band, crystals or synthizers are used to select a channel. The the RF scection need to be tuned to that channel in the transmitter. This assures that the full output is going to the antenna and that the transmitter isn't spilling over into another channel. In the US, it is ileagle to change the RF module frequency unless you are a FCC licensed tech. Some transmitters come with removable RF modules, the Futaba 9C is one, that will allow change of channel by simply unplugging one module and replacing it with another. You can also change bands from 72mhz to 2.4ghz with a module swap. With the receiver, you must change the receiver to the correct band and then with in that band, you can change crystals for the correct channel. Note that some receivers in the 72mhz band have a low and high channel choice as the receiver will not span the full frequency range.

If you need a 35mhz setup, you need to buy a setup in that band. I don't think that tower sells them, at least in the US, as they are not legal here

Don

You have to watch which crystal you are using in your reveiver. Most receivers will not work unless you use the right brand of crystal. You can't take just any crystal and plug it in. There are hobby outlets in the UK that sell JR and Futaba and I would check with them for a new radio. Running 35MHz is for Europe, we don't run that freq here in the states, so if you are buying from here, make sure it is the right freq for you to use there. Any receiver will work with any transmitter on the same freq and long as it is FM and the right shift. JR is pos shift and Futaba is neg shift. Some will do either. You cannot interchange PCM brands, so if you get a JR system, you MUST use JR for PCM. FM is not a problem, just make a change in the transmitter to FM and your all set, provided you have the right channel crystal in the receiver.
Ed

Wait. Wait. Couldn't one just just take the receiver out of one plane and place it in another, which would allow you to use the same tx? Or is this the problem?

A lot of guys run their antenna down a length of straight plastic tubing. It keeps it nice and straight and out of harms way. The trouble is sometims getting the wire down that tube. It takes me longer to get the wire down the tube that any of the rest of the project. I ended up using heavy button thread and CA it end to end with the antenna wire then push the button thread throught. It sometimes takes three or more trys to get the wire in place.

This issue, along with the plugging and unplugging of the servos and battery makes for a lot of wear and tear on the receiver pins. I would rank a receiver swap as one of the last things I want to do. I would rather pull and rebuild a fuel tank than swap a receiver.

Don

De Bong,
Sounds as though your'e reasonably commited to the hobby and may be time to get a decent Tx and RX's, Art-Tech's electrics are pretty widely considered NOT the best and certainly I bought their Mustang and the glitching TX cost me a plane re-build once so I changed and just isn't worth the risk.
Maybe look at a Spektrum DX6i which comes with one RX and then just buy a second - alternatively have a look through E-Bay, I bought a second hand never used Multplex Cockpit SX which I'm still using, I may be interested in selling it with 3 good quality receivers if you've any interest as probably going to the DX7, if so buzz me a PM.
Just one bit of advice though what's it worth not to loose a plane due to cheap electrics with both the cost to replace and time out, the extra you'd spend on quality TX and RX is probably less !!!!!!!!!!!!!