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I I purchased futaba magnum senior with some case damage, but otherwise in good condition some time ago. It was also missing the battery cover.
I won an auction on a second more complete one.

The new one was in rough shape with a lot of oxidation on the metal parts. As well the trigger was sticky.

I started to tear down the recent one to see if I can transpose plastics.
Most unexpected is that the pistol grips are removable.

There are brass plates underneath that are soldered to the negative/ground plane.
The grip portion can’t be fully split until the back of the controller is removed. It holds the split sides together. As well there is a screw in the case right over the split area that controls the tightness of the rotation. It looks like if you tighten this down you can lock the controller at a preferred angle.
Here is behind the din connector that the controller used to charge as well as for external power.

It looks like it would be simple to use a life or lipo battery externally using a custom din plug.

Keep going

These are awesome radios. I thought the cord was basically just a buddy box cable.

RC10th wrote: ↑Sun Nov 24, 2024 1:41 am Keep going

These are awesome radios. I thought the cord was basically just a buddy box cable.



MagnumSenior.jpg

From the wiring it sure looks that way.
The controller and batteries are a heavy combination. Moving the batteries would make this lighter, though unbalanced.

It’s shocking how well built it is.

It seems to be a bit more involved than I would like just to move the case plastics.
The main problem on the new acquisition seems to be the throttle pot. It is sticking. I will try some plastic safe electric cleaner and see if I douse it if it frees up.

It was missing a bunch of screws when I I opened it up making me think that someone opens this up before me. I’m going to guess it doesn’t work. That would go along with the $30 price.

JosephS wrote: ↑Mon Nov 25, 2024 11:08 am The main problem on the new acquisition seems to be the throttle pot. It is sticking. I will try some plastic safe electric cleaner and see if I douse it if it frees up.

I have two Magnum AM transmitters, both have the same problem.

juicedcoupe wrote: ↑Mon Nov 25, 2024 12:42 pm

JosephS wrote: ↑Mon Nov 25, 2024 11:08 am The main problem on the new acquisition seems to be the throttle pot. It is sticking. I will try some plastic safe electric cleaner and see if I douse it if it frees up.

I have two Magnum AM transmitters, both have the same problem.

Were you able to fix them?

JosephS wrote: ↑Mon Nov 25, 2024 5:53 pm

juicedcoupe wrote: ↑Mon Nov 25, 2024 12:42 pm

JosephS wrote: ↑Mon Nov 25, 2024 11:08 am The main problem on the new acquisition seems to be the throttle pot. It is sticking. I will try some plastic safe electric cleaner and see if I douse it if it frees up.

I have two Magnum AM transmitters, both have the same problem.

Were you able to fix them?

I didn't get aggressive but I tried some electrical contact cleaner. It didn't help.

JosephS wrote: ↑Sat Nov 23, 2024 5:10 pmThe new one was in rough shape with a lot of oxidation on the metal parts. As well the trigger was sticky.

Sticky like you pull the trigger back/push it forward and it's sluggish to return to center?

If so, working the trigger back & forth for several minutes usually free's them up. May takes a couple sessions. The grease used to dampen the trigger congeals over time and the back/forth motion restores its fluidity.