Came home, ground out the rivet and installed a new sheave with SS bolt and nylok nut. Couldn't drill out rivet as it rotated.
The unit is one piece and eyes welded so no possibility of replacing block and joining to slider with shackles (which would be too big to fit under spring anyway).

Not ideal as have the bolt head and nut protruding but it works. There is a ferrule (=bearing?) between the bolt/rivet and nylon sheave hole.
Would still be interested in any place that can install a rivet although heaven knows where the big fat SS rivets would come from.
I'm sure it is the first of a number that will fail so buying a couple of extra bolts and pre-cutting to length as well as sheaves.

For what its worth,
I use Ronstan low friction rings for sheeting in my No. 3 and when the sheaves go on the cars for my No.1 I'll be replacing them with the same. Low tech, low maintenance and they work well.
Mike

julesmoto said..
Came home, ground out the rivet and installed a new sheave with SS bolt and nylok nut. Couldn't drill out rivet as it rotated.
The unit is one piece and eyes welded so no possibility of replacing block and joining to slider with shackles (which would be too big to fit under spring anyway).

Not ideal as have the bolt head and nut protruding but it works. There is a ferrule (=bearing?) between the bolt/rivet and nylon sheave hole.
Would still be interested in any place that can install a rivet although heaven knows where the big fat SS rivets would come from.
I'm sure it is the first of a number that will fail so buying a couple of extra bolts and pre-cutting to length as well as sheaves.

Hi, there are low profile ss nylock nuts, I think they are about half the height of a standard one. Teamed with a button head bolt they would not be a problem.

UncleBob said..

julesmoto said..
Came home, ground out the rivet and installed a new sheave with SS bolt and nylok nut. Couldn't drill out rivet as it rotated.
The unit is one piece and eyes welded so no possibility of replacing block and joining to slider with shackles (which would be too big to fit under spring anyway).

Not ideal as have the bolt head and nut protruding but it works. There is a ferrule (=bearing?) between the bolt/rivet and nylon sheave hole.
Would still be interested in any place that can install a rivet although heaven knows where the big fat SS rivets would come from.
I'm sure it is the first of a number that will fail so buying a couple of extra bolts and pre-cutting to length as well as sheaves.

Hi, there are low profile ss nylock nuts, I think they are about half the height of a standard one. Teamed with a button head bolt they would not be a problem.

Thanks

welsh said..
What size rivet do think it needs. Im helping re rigg my cav atm and the some of the rivets Joe has are very big. maybe try a rigger , just a thought. cheers welsh

Same as the unthreaded portion of an M8 bolt so pretty big.