paul
Member
Posts: 8
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Post by paul on Jun 30, 2007 18:08:23 GMT
Getting closer - ooh my hands hurt from all that filing!  These aren't split-type bearings so they just need some oil holes at top and all the surfaces tidied up. |
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ace
Statesman
Posts: 528
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Post by ace on Jun 30, 2007 20:17:28 GMT
Looking good mate, how have you fixed the bearing in?
ACE
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paul
Member
Posts: 8
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Post by paul on Jun 30, 2007 21:15:00 GMT
'Interference fit', hopefully tight enough to avoid rotation if there's any binding - if that happens I'll bung in some loctite! I've used the same technique in the crank-head bearing and for the bearing in the valve rod fork (all bronze in steel). Can't wait to see how it works in practice!
Next up is remaking the eccentric (simple exercise but too much play in the first one I made) then the rather trickier eccentric strap and rod. Still not sure how I'm going to do that!
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ace
Statesman
Posts: 528
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Post by ace on Jun 30, 2007 23:51:38 GMT
The thought time will give ur hands a rest from all that metal moving.
ACE
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paul
Member
Posts: 8
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Post by paul on Jul 1, 2007 8:05:35 GMT
Here's the same end with some of the other parts I've made (mostly with temporary fasteners at present).  |
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Post by Shawki Shlemon on Jul 1, 2007 11:33:44 GMT
Paul You doing fine and I can predict bigger and more ambitious projects head .  |
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Post by Tel on Jul 1, 2007 21:44:18 GMT
Mate, if you make some little oil cups, with about a 5BA stem that's just long enough to engage in a dimple in the bearing bush your problem is solved. You'll have to bash the bearings back out to tap the holes tho'  |
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paul
Member
Posts: 8
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Post by paul on Jul 2, 2007 17:14:12 GMT
... just long enough to engage in a dimple in the bearing bush ..' Cheers Tel but do ya mean a dimple on the outside of the bearing with a channel from the bottom of the dimple to the shaft? |
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Post by Tel on Jul 2, 2007 19:21:44 GMT
Wot I do is drill thru the bearing housing with tapping size drill, insert bearing and drill a little way into it (just a dimple) thru the drilled hole. Make the oil cup with a no.60 or so delivery hole and jud screw it in - now follow the no.60 hole thru the bearing with a drill. Quicker to do than describe.
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paul
Member
Posts: 8
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Post by paul on Jul 2, 2007 20:05:41 GMT
I see. So what's the purpose of the dimple? Does the stem of the cup sit in it or is it just to improve the oil flow?
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Post by Tel on Jul 3, 2007 9:32:44 GMT
yep, the shank of the cup sits in it to stop the bearing bush turning
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