Hello Jeff,

Here is another video showing the Sub in close-up & some diving actions.

http://www.youtube.com/watch?v=Ln05l7Enk3w

To answer your questions:
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- If the speed modification means moving the wirings inside the Battery compartment, then yes I did. To let you in on a secret, I also swapped the connections on the forward/reverse Motor, which means that I have to press the backward button in order to go forward.

- I am using 4 x 2200mah NiMH batteries.

- As for the prop, here is a photo showing the inside of my "Yellow Submarine". I was going to put a rudder system when trying to resurrect this sub but the end results were not up to expectations. I was inspired after seeing a RCU video showing a boat with a steerable outdrive. Any way, I think a picture speaks a thousend words and really it was nothing complicated.

Normanski