OK, so my initial chain tensioner has essentially failed. (I knew it would just didn’t think it would this fast lol)
I need to use a lathe and bore this sprocket’s center to press-fit a bearing that is 1.125" OD. I previously welded a piece of tuning into the center to insert a bushing…so now I have to cut that out and have a well-centered 1.125" hole in the middle.
can anyone help me out?
Pics of what we’re working with
bump.
no one has access to a lathe?
Eye ball it with a drill press. 
if it wasn’t so important that it be DEAD CENTER, I would…but if it’s not absolutely in the center I will have a hard spot and a slack spot in the tensioner and that will trash my $100 chain FAST.
Whats your plan to keep the bearing from falling out the front or back side? shoulder and snap ring groove? whats your time frame?
I was going to make a shoulder on one side and a retaining ring on the other…or get lazy and tack weld it lol. Another option is to cut a piece of tube that would be a press-fit for the bearing and then cut the sprocket the OD of said tube and weld the tube in.
sooner the better, I’d like to be riding again asap honestly…but I seem to be having a hard time finding someone to help out. trying to avoid paying $40 for a new sprocket to start with.
A new sprocket is only 40 bucks? Or wiuld a new one still have to be modified
new one would still need to be modified, If I can’t get someone with a lathe to turn out the center I have a few ideas how to get it pretty close to do what I need to do, but I figured the lathe idea would be faster/easier.
Contact WWWJ?
If you are going through all that work I’d start with a new sprocket. I can probably do it but not till after the 10th or so. It seems like the sprocket is the same thickness as the bearing?
And you don’t necessarily need a lathe. It would be just as easy on a mill. I’d make a jig plate by drilling 2-3 holes to bolt the sprocket to then I can get center from that and also have something to hold it by.
good point bolting it to something else first…
I can do it. Drop it off today.
But only if you promise not to weld the bearing on.
if it’s press fit I promise I won’t weld the bearing on lol. I’ll make some type of retaining caps
:bigtup: Newman saved the day!
so what’s going to keep it from falling out?
a big washer.
Then your bearing won’t really be doing anything, no?
edit: the sprocket needs to retain the bearing so the bolt can clamp onto the center section of the bearing. A big washer compressed by the bolt will just hold everything together as one.
might have to weld the bearing to the sprocket…
it’s press-fit…I don’t think it will go anywhere
Oh. ok. good luck with that.
