hi all
food for thought :
The set up I am about to try and explain is very much similar to the one I made and use in one of my models. Its very simple to make; and only requires a minimum of a few inexpensive components. It utilises an electronic servo tester (I wonder who on this Forum makes and sells them) two cogs, one large and one small, two old biro springs, some lead sheeting, a bit of brass rod and either plastic or brass plate to make a guide.
The most difficult part is calculating the two sizes of cog required; if we have a look at the drawing or scribble you can see:-
XX represents a modified servo tester;
A is the small cog which is connected straight to the variable resistor on the servo tester;
B is the larger/drive cog
C is the two dampening springs (made from old biro pen springs)
D is the lead weight which is a horse-shoe shape
E is the guide (this prevents the weight from trying to move ford and aft - when the boat is pitching)
What we must calculate is the maximum swing of weight D; from one side to the other. This in turn moves cog B which in turn moves cog A; exactly half of the movement of the variable resistor in the servo tester.
In my model the output from the servo tester goes through a 'Y' lead to two independent servos which drive the stabilisers. You could use one servo with linkage driving two stabilisers. What we must remember is, if port stabiliser tilts upwards, the starboard tilts down, so, therefore if the boat rolls to port - port stabiliser tilts up and starboard tilts down - thus creating a screwing effect in the opposite direction to the roll of the boat.
Hope this is of some help and as I say, food for thought, well it does work (at least for me).
Aye
John E
Bluebird
Author
Topic: Slipway Sentinel...Stabilisers? (Read 9289 times)