Re: Gilmer belt alignment
Posted: Thu Oct 21, 2021 3:25 pm
Yes this is all gilmer. Second pic -- offset bush is fully inserted and against stop screw and washer. There's a little boss cast onto the housing and that's where the screw sits when tight. In that pic I've less-than-fully inserted the bearing into the bush to move the belt inboard on the drive sleeve cog. That's what gives me the 1/8" or so of clearance you see in the first pic (as compared to the original pic in the first post).
Here's a pic that shows the boss cast into the housing. I'm tempted to remove it but I'm sure it's there for a reason so I will leave it be. But removing it would move the bush in the direction I feel it needs to go.
In this pic, based on Ed's comment, I've inserted the bearing almost fully into the bush. It's still not quite where it would like to sit based on the groove in it and the point on the grub screw. But with it set like this I still get a tiny whiff of air between the belt and shoulder of the drive sleeve cog so I think I will run it like this and see what happens. The belt still sits funny on the idler cog but not much I see to do about that.
Here's a pic that shows the boss cast into the housing. I'm tempted to remove it but I'm sure it's there for a reason so I will leave it be. But removing it would move the bush in the direction I feel it needs to go.
In this pic, based on Ed's comment, I've inserted the bearing almost fully into the bush. It's still not quite where it would like to sit based on the groove in it and the point on the grub screw. But with it set like this I still get a tiny whiff of air between the belt and shoulder of the drive sleeve cog so I think I will run it like this and see what happens. The belt still sits funny on the idler cog but not much I see to do about that.