I just got a walmart seawolf off ebay. I tried it in my pool .It runs fine on the surface but will not submerege. the dive thruster works it just wont go under . any suggestions would be great .this is my first sub so im not that familiar with rc submarines and the weight adjustments.it has the little weights in the foward and rear horizontal fins. whats the proper trim set up (were the water comes to when on the surface)any help from you sub guru's would be great thanks

Hi,

Never having seen one I can only offer a general opinion. If it will not submerge one (or both) things that come to mind are

(1) The batteries do not have enough juice to spin motors fast enough, thereby not creating enough thrust
(2) It is obviously too bouyant. Try adding some weight until it "just floats" then watch how quickly you will be able to submerge

Either one of those should get you up and going.

Pete