Futaba-Tamiya

Discuss your radio gear here!
Post Reply
User avatar
Afrikakorps
Corporal
Posts: 250
Joined: Sun Jun 14, 2015 1:40 am
Location: Australia

Futaba-Tamiya

Post by Afrikakorps »

Hi Guys,
I am wondering if someone can help me out.
I have read that some people modify their Futaba 4 channel transmitters (4YWD or 4YF ) for their Tamiya tanks.
In particular, they add a “fire” button to the transmitter so they do not have to use the trim and stick together.
My Pershing requires full positive trim plus full pos stick to fire the main gun, and the opposite to fire the mg.

Is the modification just the addition of a momentary switch on the side of the transmitter with a wire soldered from the trim potentiometer ?
Would switching this be the equivalent of full trim ?
If so, this would mean that i would just press the button(switch) and at the same time press the stick fully forward to fire the main gun ?
Hope this makes sense.
If anyone has a wiring diagram or pics that would be very helpful.

Any advice will be much appreciated. :)

Thanks
AK
Panzer III G
Sherman M4A3 (105)
T-34/76 (1942)
Panzer IV Wirbelwind
Sturmtiger
KV-2
M26 Pershing
T-34/76 (1943)
KV-1
M3 Lee
Ferdinand / Elephant
M16 Half-track
Panther G
M4a1 (75mm)
M41 Walker Bulldog
JS-2
M4a3e8 (76mm)
Japanese Type94
FT-17
Tiger 1
User avatar
tomhugill
Captain
Posts: 4746
Joined: Thu Apr 15, 2010 11:21 am

Re: Futaba-Tamiya

Post by tomhugill »

Your spot on with its function and how it works!
User avatar
Afrikakorps
Corporal
Posts: 250
Joined: Sun Jun 14, 2015 1:40 am
Location: Australia

Re: Futaba-Tamiya

Post by Afrikakorps »

Thanks Tomhugill,
I tried it out last weekend but to no avail. I fitted 2 push button momentary switches with a wire from the centre of the trimpot to one side of each buttom. Then from the other side of the trimpot tp the other connection of the button. Likewise, from the other end of the trimpot to the other button switch.
Tested the circuit with a multimeter. But could not get the button switches to activate the mg or cannon. :problem:
Have I overlooked something ??? Does anyone have any suggestions o-

Thanks
AK
Screen Shot 2017-05-16 at 6.59.03 pm.jpg
Screen Shot 2017-05-16 at 6.59.03 pm.jpg (57.01 KiB) Viewed 1341 times
Panzer III G
Sherman M4A3 (105)
T-34/76 (1942)
Panzer IV Wirbelwind
Sturmtiger
KV-2
M26 Pershing
T-34/76 (1943)
KV-1
M3 Lee
Ferdinand / Elephant
M16 Half-track
Panther G
M4a1 (75mm)
M41 Walker Bulldog
JS-2
M4a3e8 (76mm)
Japanese Type94
FT-17
Tiger 1
h5djr
Recruit
Posts: 33
Joined: Fri Sep 14, 2012 12:46 am

Re: Futaba-Tamiya

Post by h5djr »

I did this to my Futaba SkySport 4 transmitter about 12 years ago following a set of instructions by the Front Range Armoured Group from Colorado. I still have their set if instructions. They are very detailed. If you send me your email address to h5djr@ntlworld.com I will send you a scanned copy.
Post Reply

Return to “Radio Gear”