How to weld a diff up

[H8NSKPAUL]

I thought I would start op a new thread on how to lock the diff up for drifting as on my trackday car. This is not recomended for street use as the car will want to go in a straight line all the time and this can be tricky at high speed, also I believe it would fail the MOT. But for track or drag use...it's a must.
I began by proping the car up safely, clambered under drained the oil (watch out as it's an irritant!) and removed the diff support bracket. Then I could get at the inspection plate bolts & 5 minutes later that was off and I could see this...really good access isn't it?


I decided to make a Meccano version to fully understand how it worked and be sure of what to weld up!!! It always puzzled me as to how one wheel would lite up when going for it & how when jacked up, when you turned one wheel one way the other wheel would rotate in the opposite direction.

All became very clear and it's really simple just weld up all the four small gears that connect to each other in the centre .....don't be shy with the mig weld either....get plenty on.
Next task once it's cooled down a bit is to wash out all the spatter balls. Then I made a new paper gasket and put on with some sealer. Stuck it back together, filled with just under 2 litres of diff oil.
That's it........and these are the results.....steps out a treat!!!

Hans and Paul.