sorry folks , but i am a beginner at this ...

i have a wren and a kj 66 turbine i plan to start on a bench ....

i have bought an orbit autostart ecu with kerosene start ..but i don´t get how i can start the engine without having a r/c and a receiver ...

there are a couple of wires that emerges from the ecu , those are named : throttle and safety switch ......they have to be connected to the "r/c receiver....

is any receiver suitable for such task ?? any suggested brand and model will be greatly appreciated .

i don´t want to use an r/c unit anyway , since i do not plan to use the turbine in a modeljet ...

any help here ?????????

thank you guys !!

Rick

Your ECU needs to be hooked up to a receiver. (and transmitter)...that is where your throttle control comes into the picture. The safety switch is an emergency cutoff, also controlled from the transmitter. (most ECU's will not function if they cannot detect an active RC signal ...this is a safety feature)

I won't even ask what you are planning on doing with the turbines...BUT if they are not going in an airplane, you need to have a radio with a ground-use (ie non-aircraft) frequency..

I'm not familar with the Orbit stuff, but the ECU senses the RX pules and that is what is used to make the ECU increase or decrease the fuel pump RPMs thus creating more or less thrust. Any R/C RX should work to test the turbine out. Normally there is a learning setting that you have to go through with the ECU to learn the throttle. During that process the ECU learns the Rx pules for low throttle, high throttle, and shutdown.

JR Gautreaux

I'm not familiar with the Wren, however ... some of the turbines can be run without a receiver being in the picture at all - the start, throttle operation etc can be controlled from the GSU / data terminal / whatever each manufacturer calls it.

Gordon

Hi!!

can anybody give me a r/c brand and model that could accept an drive a turbine ??

i thought i could control the turbine using a servo

[ul][*] JR[*] Futaba[*] Airtronics[*] Hitec[*] Multiplex[*] Graupner[*] Sanwa[*] etc., etc., etc
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You could... but you'd still need a receiver and transmitter...

... or a servo tester for input to the ECU.

It works on my SimJet's.

will all of them have the receiver with such inputs

are all of them "turbine friendly" ??

asking because i don´t want to buy something it won´t work

Rick

Why not simply replace the TX/RX with a servotester...???
Like this $20 thing: http://www2.towerhobbies.com/cgi-bin...?&I=LXVK79&P=7

With my SimJet's I just plug the ECU-RX cable in the tester. Switch on power on tester and turbine. The tester is now moved from -100% to +100% and back, and the ECU have learned the low throttle and high throttle - and begins startup procedure...
The thrust can now be adjusted with the tester - and to stop the turbine, I just take the tester to -140%.

Don't know what to do with the "Safety switch" - or how it works.

Hi Rick,

A friend of mine once had an Orbit ECU (although not the auto start version you have) and, as I remember, there were 2 connections to the receiver. I think one was the throttle channel, and the 2nd connection went to an on/off switch on another channel... If that's the way this one works, you'll need 2 of those little servo testers and you should be good to go.

Good luck on the maiden flight of your test bench!
Kelly