Converting an on/off throttle control to proportional.

[jaraau]

I currently have an Electrafun XP. The throttle is simply an on/off switch on the Tx.
I was talking to a guy who said it was easy to convert it to a proportional control as the receiver is already proportional.
He said all I needed to do was install a trimpot in the Tx.
He said there was a web site which showed you haw to do it.
Anyone heard of this or can help with info?
Thanks in advance,
Ray from Aus.

[glydr]

G'day

I say that with the right accent 'cos I am from Sydney.

I don't know the website, but I know of the magazine article in RCM News.

http://www.rcmn.com.au/bakiss50.htm#200570

(search that page for 'electrafun') The very bottom of the page has info on ordering back issues... I think it should cost less than $10 to get a copy of the magazine to you.

Post your success (or otherwise) on RC Groups for all.

[almtmd]

Use 5k POT to replace the switch.

You must trace the fixed resistor POT on the PCB (2 resistors in series to form the fixed POT)
R1 R2
a ---|---XXXX--|----XXXXX---- b
| |
|---Sw----|



R1 R2
a ---|---XXXX--|----XXXXX---- b
| 5k pot |
|---XXXX--|
| |
|-----|


Thanks

[jaraau]

Thanks for your responses.

Almtld, looks simple, but I can't fully understand your schematic.

Once I find the 2 resistors do I by pass them with the old switch wires?

Thx.