Replacement pin with soft head

crookesa

Hi

I’m trying to replace a pulley wheel on a large umbrella.

The umbrella folds onto the pulley wheel mechanism as in the 2nd picture below so the pin holding the mechanism in place needs to be flat headed.

Has anyone any idea where I might get such a rod/pin/nail to replace the one picture when I take it out and put in a new pulley wheel?

Thanks in advance...

cletus

Have you been able to see how it's secured on the far side? It looks like round stock that has been peined over to me

jack of all

A standard round wire nail might do the job- a 2" or 3" one depending on the diameter required. Wire nails are relatively soft, easy to cut, grind and peen over, like a rivet.

crookesa

cletus wrote: »

Have you been able to see how it's secured on the far side? It looks like round stock that has been peined over to me

It's very similar on the other side, so I presume the nail is some sort of soft head when can be hammered into a rivet like head.

crookesa

jack of all wrote: »

A standard round wire nail might do the job- a 2" or 3" one depending on the diameter required. Wire nails are relatively soft, easy to cut, grind and peen over, like a rivet.

Thanks, I'll try get a few of them and try to do it. Would the shaft of the nail be strong to support the weight of the pulley?

jack of all

crookesa wrote: »

Thanks, I'll try get a few of them and try to do it. Would the shaft of the nail be strong to support the weight of the pulley?

Plenty strong! I use round wire nails all the time, reshaping them for use as rivets to repair gardening tools etc.

cletus

As Jack of all trades said, a round wire nail would be perfect. Just cut it a little long so it can be peined. A ball-pein hammer helps, but is by no means a necessity

Calahonda52

crookesa wrote: »

It's very similar on the other side, so I presume the nail is some sort of soft head when can be hammered into a rivet like head.

How can you tell?
How come no pictures?
I don't see how you will be able to replicate the fixing unless you have unfettered access to the other side and the ability to have it really well supported to resist the ball-pein hammering

crookesa

Calahonda52 wrote: »

How can you tell?
How come no pictures?
I don't see how you will be able to replicate the fixing unless you have unfettered access to the other side and the ability to have it really well supported to resist the ball-pein hammering

Yeah this is the best picture I have at the moment of the back of it but I could get a piece of metal in behind to stop the head of the nail moving. Best solution I've been offered here yet.

cheif kaiser

A Chicago Screw/Rivet Screw/Barrel Nut would also do the job

https://www.ebay.co.uk/itm/Stainless-steel-Flat-Head-Chicago-Screw-Stud-Rivet-Belt-Strap-Fastener-Screwback/123203765871?var=423614073237&hash=item1caf84466f%3Ag%3A7KkAAOSwNcZZcgX5&_sacat=0&_nkw=chicago+screw+STEEL&_from=R40&rt=nc

Calahonda52

given the play in the bracket, maybe get two circles cut in say 1.0/1.5mm Alu, diameter as large as possible, split them and glue on with epoxy..
You could also build out the roughness in the existing with epoxy once the alu is fitted

crookesa

Calahonda52 wrote: »

given the play in the bracket, maybe get two circles cut in say 1.0/1.5mm Alu, diameter as large as possible, split them and glue on with epoxy..
You could also build out the roughness in the existing with epoxy once the alu is fitted

So am I right in staying create 2 nail heads persay from aluminium and epoxy them onto the end of a bar do some sort to hold the pulley in place?

Calahonda52

crookesa wrote: »

So am I right in staying create 2 nail heads persay from aluminium and epoxy them onto the end of a bar do some sort to hold the pulley in place?

No, leave everything as is, get two circles in Alu, the max diameter that will fit inside the metal band, drill a hole in each the same size as the axle/pin u want , and then split them in half so as you can fit them around the pin and glue them on both sides [ think of the alu as two half slices of lemon for a G&T]

then smooth out the rough edges with either epoxy or isopan, using the Alu as the guide.
...before using any glue etc, wrap the rope in insulation tape to protect it, remove when all done

crookesa

Calahonda52 wrote: »

No, leave everything as is, get two circles in Alu, the max diameter that will fit inside the metal band, drill a hole in each the same size as the axle/pin u want , and then split them in half so as you can fit them around the pin and glue them on both sides [ think of the alu as two half slices of lemon for a G&T]

then smooth out the rough edges with either epoxy or isopan, using the Alu as the guide.
...before using any glue etc, wrap the rope in insulation tape to protect it, remove when all done

Ah no I get you. Thanks that’s a good option. Cheers ðŸ‘ðŸ»