Bonding aluminun to brass?

[lazer50]

Hi guys, lance here.I have a vintage sireno siren that has an aluminum impeller/brass shaft and nut.im not sure how it was bonded but the shaft broke loose from impeller as its 6v and my nephew hooked a 12v battery to it uggh! I need to know what type of epoxy would be the strongest for brass to aluminum? Devcon,jb,etc.? Thank you for any input in advance!

 

[gungatim]

maybe try silver solder? or the trusty JB weld. just clean it up real well/degrease it. any way to drill/tap for a set screw?

maybe just email this guy, he does restorations, maybe he'll give some advice.
http://www.sirenman.com/complete/list.html

 

[ScottsGT]

JB Weld has never let me down.

 

[exmaxima1]

If you have close fitting parts, no significant gaps, a 2 part acrylic adhesive is extremely durable and strong. Just buy a small tube of Rearview Mirror Cement at the local autoparts store.

 

[Firebrick43]

When you say broke loose do you mean the impeller is spinning on the shaft now?

If so green loctite. 638.

 

[rburke65]

I'd vote for JB Weld. Good stuff.

 

[lazer50]

Thanks fellas! It origially had 2 brass pins that fit into a compression sleeve on the shaft.i think i'm going to drill the pin out(where sheared from the 12v)and put a spring pin in.with either jb or devcon backup.