Is JB Weld still the best or is there another, better option? I'm sticking a stainless ring to the outside of an aluminum pulley. Low temp application.
Is JB Weld still the best or is there another, better option? I'm sticking a stainless ring to the outside of an aluminum pulley. Low temp application.
We're using the 3M panel adhesive for some custom stuff...a lot better but it's expensive and the gun is expensive.
It mixes itself though through a disposable mixing tube...pretty cool.
What about that Loctite adhesive they used in the train video? Haven't seen what it costs though.
Info here: Loctite
So many more questions - How tight are the fits? What is the purpose of this assembly? Whats the surface finish like? What is your definition of low temp? Runs in solvent? Air? Whats the expected life of the part/assembly in question.
Stainless ring on the OD of an aluminum pulley - Heat the ring, cool the pulley, shrink fit them together with some Loctite retaining compound (not regular loctite) for good measure. That will stay together till you are dead and buried. If you are trying to drive something with the stainless ring, pin it for good measure once it is all assembled so it can't rotate.
93gsxturbo said:So many more questions - How tight are the fits? What is the purpose of this assembly? Whats the surface finish like? What is your definition of low temp? Runs in solvent? Air? Whats the expected life of the part/assembly in question.
Stainless ring on the OD of an aluminum pulley - Heat the ring, cool the pulley, shrink fit them together with some Loctite retaining compound (not regular loctite) for good measure. That will stay together till you are dead and buried. If you are trying to drive something with the stainless ring, pin it for good measure once it is all assembled so it can't rotate.
It's a tight friction fit already. Smooth surface on both materials. Ambient room temp and runs in air about 60 rpm. The stainless ring is a "fence" for a 3/4" belt riding on the geared aluminum pulley. I've got a few spares of the ring and pulley and want to install these glued assemblies as the old press-fit parts fail.
Part 25 on the diagram. 10 internet points to the GRMer who can guess what this goes to.
If its already a close fit, green (I think) sleeve locking locktite. Anything much thicker will just scrape off during installation.
http://www.loctite.com.au/3320_AUE_HTML.htm?nodeid=8802627584001
I used JB stick and normal JB weld to reattach the mounts to my Toyota 4x4's radiator (all 4 tack welds broke, leaving the radiator hanging).
One of each of the jb welds cracked and broke within two months (that is, one stick and one tube mix). oddly enough, they broke diagonal from each other.
The other two "welds" held up until I sold the truck 6-months later (this includes a 4-wheel excursion and a trip across country). However, when I bought the truck back 2 years later, it had a new radiator.
Depending on application and mixing ability, I usually trust jb weld for just about anything
(apologies for any bad spelling. on fone. kno spellz chek)
In reply to Crxpilot :
A printer.
Plexus. I've seen aluminum tear a chunk out and remain bonded to carbon. Amazing stuff.
It sounds/looks like you have a potentially high shear and limited interface issue. Could you do the adhesive AND add one/several peened points to the back of the pulley, to give a backup for the adhesive?
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