Armour Dreams

[Jonathan Moore]

All the holes have now been drilled so it was on to the machining of the recess in either side of the sprockets. To start with I counter bored the flange and then tapped a number of the holes so that I could bolt the sprocket in place rather than just relying on my tack welds.
Again I used the modified Land Rover hub but by using a spring loaded stop I turned the whole assembly into a sort of ratchet. If you remember I am rotating the assembly by hand using a long bar, so if the cutter were to snatch, especially at the start of each cut, it would try to rotate the sprocket at the speed of the cutter (500 rpm) in the opposite direction to the one that I am trying to turn it, taking my arm with it and ending in a big bang. As you can see from the pictures, the stop rests against each tooth of the sprocket in turn, stopping it rotating in the wrong direction and as the sprocket is rotated the stop moves accordingly.

[Jonathan Moore]

First side finished.

[Jonathan Moore]

The tack welds now had to be ground out and the sprocket flipped over so that the recess now locates over the outside diameter of the flange and it is then bolted in place ready for the recess to be cut in the opposite side of the sprocket.

[Jonathan Moore]

I now have two completed sprockets so my next task was to make the sprocket flange look something like the real thing. The original has a nice curve on it where as mine is, well, rustic

[Jonathan Moore]

I was going to make a sort of hub cap that bolted on but in the end I decided to roll a cone and weld it on to the flange.

[Jonathan Moore]

And after a bit of welding.
Then of course there was quite a bit of grinding but I am quite happy with the end result.
The next job is to make the cover to go over the hole in the middle.



That' all for now.

Jon

[David Dunlop]

Thanks for the great update, Jon.

Nice work, as always!

David