Sunday, 24 November 2019

To bead or not to bead

I have read quite a few posts on forums where MG Midget owners have discussed replacing the rear wing beading. As it is a common rusting point where moisture gets in under the beading and silently rots away the joint where the rear wing meets the main section of the chassis. 

I am extremely lucky in that the wings are in very good shape around that area, but there is a little rust bubbling around the beading and in one small section it has come away. With further probing with a screwdriver found that this beading needed to be replaced. 



There has been a few debates about the best way to tackle this problem. The more pure enthusiast will suggest that originality is vitally important and certainly in the restoration guides it gives a very good description of how to attached a new beading strip with brazing techniques. 




There is another view though that the beading was a cheaper alternative during the manufacturing process than making the seam between the wing and the chassis seamless. Today this gap could be filled to make a smooth and impenetrable fix by using the lead loading process, which uses molten lead to shape the desired finish.




This is a highly skilled job to get this perfectly correct as you can see in this video: YouTube - Lead Work and on my MKII the beading is a lot longer so there is more to get right.

So far I have removed the beading and cleaned out the joint with the grinder and a metal cutting disc to remove the rust, which thankfully is limited and then applied rust converter to stop further corrosion. I'll have a further thought about which way to go.



No comments:

Post a comment