3 replies to this topic

[GreGGers]

Write so I'm in the middle of cleaning my radius arms up and basically I've bought new knuckles which are these ones...
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So these are nylon cups and the knuckle is underneath them I'm guessing but when I've took my
Old trumpets off I've been left with this...
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My question is is this metal cup like the old version of the nylon cup and I just take this out and put the new one in or does the nylon cup go into this, I've looked on the forum and all people talk about are nylon cups no mention of metal cups??

Thanks, jack :)

[lrostoke]

pull the old cup out...you want to be down to bare casting...then fit the new cup and ball.

[robminibcy]

you need to take the old one out. fairly easy with a pair of pliers. I think you'll find its actually a nylon cup in there like the new one not a metal one. Ive never heard of metal cups being used.

[GreGGers]

Okay thanks a lot