# Help: Do you haz a lathe???? **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [June 24, 2013, 11:29am UTC](https://forums.speedlife.net/t/help-do-you-haz-a-lathe/231360 "2013-06-24T11:29:19Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![focusinprogress](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/focusinprogress/32/7227_2.png) [@focusinprogress](https://forums.speedlife.net/u/focusinprogress)\ **Post date:** [June 24, 2013, 11:29am UTC](https://forums.speedlife.net/t/help-do-you-haz-a-lathe/231360/1 "2013-06-24T11:29:19Z")
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 ![http://img.photobucket.com/albums/v112/focusinprogress/20130624_135628_zpsbc71d625.jpg](http://img.photobucket.com/albums/v112/focusinprogress/20130624_135628_zpsbc71d625.jpg) ![http://img.photobucket.com/albums/v112/focusinprogress/20130624_135712_zps43bc24a8.jpg](http://img.photobucket.com/albums/v112/focusinprogress/20130624_135712_zps43bc24a8.jpg) ![http://img.photobucket.com/albums/v112/focusinprogress/20130624_135807_zps0b2cfcac.jpg](http://img.photobucket.com/albums/v112/focusinprogress/20130624_135807_zps0b2cfcac.jpg) ---
**Author:** ![focusinprogress](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/focusinprogress/32/7227_2.png) [@focusinprogress](https://forums.speedlife.net/u/focusinprogress)\ **Post date:** [June 25, 2013, 8:32pm UTC](https://forums.speedlife.net/t/help-do-you-haz-a-lathe/231360/2 "2013-06-25T20:32:50Z")
bump. no one has access to a lathe? ---
**Author:** ![llink78](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/llink78/32/8037_2.png) [@llink78](https://forums.speedlife.net/u/llink78)\ **Post date:** [June 25, 2013, 10:52pm UTC](https://forums.speedlife.net/t/help-do-you-haz-a-lathe/231360/3 "2013-06-25T22:52:40Z")
Eye ball it with a drill press. 🙂 ---
**Author:** ![focusinprogress](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/focusinprogress/32/7227_2.png) [@focusinprogress](https://forums.speedlife.net/u/focusinprogress)\ **Post date:** [June 26, 2013, 6:05am UTC](https://forums.speedlife.net/t/help-do-you-haz-a-lathe/231360/4 "2013-06-26T06:05:08Z")
> [@llink78](#): > > 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. ---
**Author:** ![travisn](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/travisn/32/5046_2.png) [@travisn](https://forums.speedlife.net/u/travisn)\ **Post date:** [June 26, 2013, 6:53am UTC](https://forums.speedlife.net/t/help-do-you-haz-a-lathe/231360/5 "2013-06-26T06:53:01Z")
Whats your plan to keep the bearing from falling out the front or back side? shoulder and snap ring groove? whats your time frame? ---
**Author:** ![focusinprogress](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/focusinprogress/32/7227_2.png) [@focusinprogress](https://forums.speedlife.net/u/focusinprogress)\ **Post date:** [June 26, 2013, 7:07am UTC](https://forums.speedlife.net/t/help-do-you-haz-a-lathe/231360/6 "2013-06-26T07:07:08Z")
> [@travisn](#): > > 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. ---
**Author:** ![somedude](https://avatars.discourse-cdn.com/v4/letter/s/ecd19e/32.png) [@somedude](https://forums.speedlife.net/u/somedude)\ **Post date:** [June 26, 2013, 7:38am UTC](https://forums.speedlife.net/t/help-do-you-haz-a-lathe/231360/7 "2013-06-26T07:38:14Z")
A new sprocket is only 40 bucks? Or wiuld a new one still have to be modified ---
**Author:** ![focusinprogress](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/focusinprogress/32/7227_2.png) [@focusinprogress](https://forums.speedlife.net/u/focusinprogress)\ **Post date:** [June 26, 2013, 7:52am UTC](https://forums.speedlife.net/t/help-do-you-haz-a-lathe/231360/8 "2013-06-26T07:52:46Z")
> [@somedude](#): > > 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. ---
**Author:** ![BOBBYGRV](https://avatars.discourse-cdn.com/v4/letter/b/ed8c4c/32.png) [@BOBBYGRV](https://forums.speedlife.net/u/BOBBYGRV)\ **Post date:** [June 26, 2013, 7:56am UTC](https://forums.speedlife.net/t/help-do-you-haz-a-lathe/231360/9 "2013-06-26T07:56:02Z")
Contact WWWJ? ---
**Author:** ![travisn](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/travisn/32/5046_2.png) [@travisn](https://forums.speedlife.net/u/travisn)\ **Post date:** [June 26, 2013, 8:58am UTC](https://forums.speedlife.net/t/help-do-you-haz-a-lathe/231360/10 "2013-06-26T08:58:33Z")
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. ---
**Author:** ![focusinprogress](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/focusinprogress/32/7227_2.png) [@focusinprogress](https://forums.speedlife.net/u/focusinprogress)\ **Post date:** [June 26, 2013, 9:03am UTC](https://forums.speedlife.net/t/help-do-you-haz-a-lathe/231360/11 "2013-06-26T09:03:08Z")
good point bolting it to something else first… ---
**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\ **Post date:** [July 2, 2013, 6:51am UTC](https://forums.speedlife.net/t/help-do-you-haz-a-lathe/231360/12 "2013-07-02T06:51:23Z")
I can do it. Drop it off today. But only if you promise not to weld the bearing on. ---
**Author:** ![focusinprogress](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/focusinprogress/32/7227_2.png) [@focusinprogress](https://forums.speedlife.net/u/focusinprogress)\ **Post date:** [July 2, 2013, 7:15am UTC](https://forums.speedlife.net/t/help-do-you-haz-a-lathe/231360/13 "2013-07-02T07:15:50Z")
> [@newman](#): > > 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 ---
**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\ **Post date:** [July 2, 2013, 3:37pm UTC](https://forums.speedlife.net/t/help-do-you-haz-a-lathe/231360/14 "2013-07-02T15:37:04Z")
![http://img.tapatalk.com/d/13/07/03/6uga6uza.jpg](http://img.tapatalk.com/d/13/07/03/6uga6uza.jpg) ![http://img.tapatalk.com/d/13/07/03/esara7u2.jpg](http://img.tapatalk.com/d/13/07/03/esara7u2.jpg) ![http://img.tapatalk.com/d/13/07/03/eba8usy8.jpg](http://img.tapatalk.com/d/13/07/03/eba8usy8.jpg) ---
**Author:** ![focusinprogress](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/focusinprogress/32/7227_2.png) [@focusinprogress](https://forums.speedlife.net/u/focusinprogress)\ **Post date:** [July 2, 2013, 8:35pm UTC](https://forums.speedlife.net/t/help-do-you-haz-a-lathe/231360/15 "2013-07-02T20:35:17Z")
:bigtup: Newman saved the day! ---
**Author:** ![travisn](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/travisn/32/5046_2.png) [@travisn](https://forums.speedlife.net/u/travisn)\ **Post date:** [July 2, 2013, 8:41pm UTC](https://forums.speedlife.net/t/help-do-you-haz-a-lathe/231360/16 "2013-07-02T20:41:14Z")
so what’s going to keep it from falling out? ---
**Author:** ![focusinprogress](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/focusinprogress/32/7227_2.png) [@focusinprogress](https://forums.speedlife.net/u/focusinprogress)\ **Post date:** [July 2, 2013, 8:51pm UTC](https://forums.speedlife.net/t/help-do-you-haz-a-lathe/231360/17 "2013-07-02T20:51:17Z")
a big washer. ---
**Author:** ![travisn](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/travisn/32/5046_2.png) [@travisn](https://forums.speedlife.net/u/travisn)\ **Post date:** [July 2, 2013, 9:44pm UTC](https://forums.speedlife.net/t/help-do-you-haz-a-lathe/231360/18 "2013-07-02T21:44:55Z")
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… ---
**Author:** ![focusinprogress](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/focusinprogress/32/7227_2.png) [@focusinprogress](https://forums.speedlife.net/u/focusinprogress)\ **Post date:** [July 3, 2013, 6:09am UTC](https://forums.speedlife.net/t/help-do-you-haz-a-lathe/231360/19 "2013-07-03T06:09:20Z")
it’s press-fit…I don’t think it will go anywhere ---
**Author:** ![travisn](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/travisn/32/5046_2.png) [@travisn](https://forums.speedlife.net/u/travisn)\ **Post date:** [July 3, 2013, 7:08am UTC](https://forums.speedlife.net/t/help-do-you-haz-a-lathe/231360/20 "2013-07-03T07:08:40Z")
Oh. ok. good luck with that. [Next page](https://forums.speedlife.net/t/help-do-you-haz-a-lathe/231360.md?page=2)