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Top 10 mods for Mini lathe please ?
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Buell:
Hi guys thanks for all the info and help ..much appreciated. I have seen lots of people do the conversion...with interesting tools and pullers and the like ! I have it all apart no issues at all just another strip down day. Think as I'm doing this I will try and make the plastic end caps in Ali...That is if I don't cock it up !

Yes Buell Xb1200 and Husqvarna Supermoto.

Just finished a few bits...needed something to do !
John Rudd:
Buell,
A link to the write up I did......

http://madmodder.net/index.php/topic,6664.msg71206.html#msg71206
Buell:
Thanks very much that clears up and shines a light on some stuff.... But I'm still puzzled ! ...sorry

If we polish the journals so that it is a "hard hand push " to get the new tapered bearings on...then what's to stop me Pushing them even further with say an Even harder push with a Blunt drill in the tail stock . Yes I know that was a bit over bored but you get the idea. I'm not trying to be crazy about this but at what point do they stop Moving on the shaft ? We know that the original shaft was very tight and the new taper bearing will not go on this..so we polish and smooth and make it a firm fit but there is a part of me that is interested because if it does move backwards then gears and belts etc will be mis aligned  maybe ?  Is it just the mere fact that we have two Hard fitting bearings fitted that it's very unlikely to happen...

The new and the old bearings are after all the same dimension on the shaft...just we don't want them to fit as tight as before, because it could damage and preload them to much. I'm guessing here as I'm not an Engineer...Just a Heating One !

Ps if you say Enough...I will drop this !! :lol: :lol:
mexican jon:
The bearing need to be a sized fit  :scratch: this allows the nuts on the drive end to be tightened so as to put load on the bearings  :thumbup: the fact that the whole assembly is held together stops the possibility of any movement, the fact the inner races are also locked by the shoulders means that the shaft and bearings spin together. Simples  :headbang:
picclock:
FWIW while you have the headstock off replace the speed change gears for metal ones. ARC will supply, though one of the ones I had from them was very poorly cast.

The other mod I found most useful was an additional gear reduction from the motor and belt replacement. This allows higher torque at the cost of lower speed, which I have found very useful.

Removal of the compound slide and replacement of it with a solid metal block also improves rigidity allowing better finishes and parting.

There is some other info and pictures which may (or may not) be useful on photobucket :
http://s917.photobucket.com/user/picclock/library/7x14%20Real%20Bull%20mini%20%20lathe?sort=3&page=1

Best Regards

picclock
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