10 replies to this topic

[adcyork]

hi. i'm currently in the process of fitting new knuckle joints and rubber cones and i'm at the point of needing to remove the old knuckle joints from the trumpets. I tried removing them using heat, brute force and hitting them but they are well and truly stuck!
what is the best way to try and get them out?

[nomininolife]

Where are you hitting them?

[Big_Adam]

bigger hammer?

[adcyork]

i'm hitting them down the centre of the trumpet with a big punch while the trumpet is in the vice. how should i be doing it?

[fikus01]

could try a long drift down the centre of the trumpet or is the rubber doughnut stuck on the trumpet??

[Guess-Works.com]

i'm hitting them down the centre of the trumpet with a big punch while the trumpet is in the vice. how should i be doing it?

Yup, that's how to do it.... just be careful you don't crack/break the cone, and dont be afraid to give it a good smack with a hammer

[adcyork]

right i'll get my sledge hammer out today n just go for it

the dohnut isn't stuck no. The knuckle joint is stuck in the trumpet.

[nomininolife]

Try spraying 'plus gas' down the cone

[vasi]

I still have an old trumpet wedged firm in a drain hole in the wall outside my house where we tried to remove a knuckle.

[adcyork]

haha sounds like you've had fun with that one fun. I cracked the left hand side trumpet hitting the cone out so i've bought some pattern hi/lo's now and new knuckle joint all round as it wasn't much more expensive than 2 new trumpets. so its sorted now. cheers guys

[Retro_10s]

haha sounds like you've had fun with that one fun. I cracked the left hand side trumpet hitting the cone out so i've bought some pattern hi/lo's now and new knuckle joint all round as it wasn't much more expensive than 2 new trumpets. so its sorted now. cheers guys

glad it's sorted. I ended up grinding mine of, then the heat from grinding got the metal red hot and i just had to give it a sharpish tug with some moleys and it popped out.