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  1. #16
    Join Date
    Sep 2011
    Location
    Ballarat
    Age
    65
    Posts
    3,103

    Default

    Hi Mark
    Trimmings (wicks) are tricky things and normally take a bit of time to get right.
    I use wool but just buy the appropriate 'ply' for the job. There are a few factors involved in getting the right amount of oil to the bearing or slide.
    The size of the riser pipe, the amount of wear in the bearing, ambient temperature and its a effect on the oil, how many strands you make the wick out of to name a few.
    Some times the bearing can create a suction situation and drag all the oil from the reservoir relatively quickly yet if the bearing has close tolerances then it will feed very little.
    The trimmings wick the oil from the reservoir and then once it enters the riser pipe it starts to syphon the oil to the bearing while acting as a filter to clean the oil hence the reason to periodically clean the trimmings.
    The cover on the oil reservoir musn't seal too perfectly as a vacuum can be created and stop the flow of oil (don't ask me how I know)
    There is a bit more but the good wife has summoned me for other duties.

    Phil

  2. #17
    Join Date
    Oct 2016
    Location
    Melbourne
    Posts
    470

    Default

    Hi Phil,
    Yeah it looks like a tricky job to do. I have some yo yo string 100% cotton will do a test on them as well. Ah yes speaking off musn't seal too perfectly i was thinking of sealing up this section on the apron see photo. I can't remember if it had some silicone gasket on it, will have a look under the carriage see if there is any silicone left on that section.
    Cheers,
    Mark.Resize of IMG_5899.jpg

  3. #18
    Join Date
    Sep 2011
    Location
    Ballarat
    Age
    65
    Posts
    3,103

    Default

    Hi Mark
    I used cotton trimmings for a while but stopped though I can't remember why . I am now using wool and I get the feeling that the cotton degraded quicker. Our trimmings are removed nightly and replaced in the morning so get a lot of wear and tear. In your situation though that won't happen of course. There is the tired old argument of whether to use wool or worsted and if I remember correctly, wool won the argument as the fibres are in strands and not in random short bits like worsted yarn. This helped in the wicking process. I think though that the Americans used a bit of cotton in their machines.
    If it was me I would use the wool.

    In your pic you indicated that you would use a rubber seal in the trough, did an old one come out there? Also I'm not sure that I would use the gasket between the carriage and apron but that may be just me.
    Do you have a pic of the underside of the carriage showing the mating part for the apron?

    You are doing a great job by the way and worthy of an Okuma.

    Phil

  4. #19
    Join Date
    Oct 2016
    Location
    Melbourne
    Posts
    470

    Default

    Hi Phil,
    Yeah i think i will go with the cotton. Yes there a rubber seal in the trough which is still in place underside of the carriage, once i get the apron back onto the lathe will start on the carriage will have pics on that soon and hopefully the manual will arrive next week. Thanks for the admiration

    Cheers,
    Mark.

  5. #20
    Join Date
    Oct 2016
    Location
    Melbourne
    Posts
    470

    Default

    Started cleaning up the saddle and remove the 2 snap screws which was easy and clean up some other parts. The apron is back together just got to make some new oil wicks, bought 20L of Sheel Tellus 15 oil for the Kopp variator it holds 1.8L if any one needs this type of oil let me know and i can sell you some And the manual has arrive so got some reading to do.
    Cheers,
    Mark.Resize of IMG_5917.jpgResize of IMG_5913.jpgResize of IMG_5914.jpgResize of IMG_5915.jpgResize of IMG_5916.jpg

  6. #21
    Join Date
    Oct 2011
    Location
    Norwood-ish, Adelaide
    Age
    59
    Posts
    6,541

    Default

    I would guess the large holes had felt in them to act as a wiper and keep the oil where it is needed. The small holes are just inlets and between the two large holes so no felt needed. You're doing a great job on that lathe and it should repay the effort.

    Michael

  7. #22
    Join Date
    Oct 2016
    Location
    Melbourne
    Posts
    470

    Default

    Thanks mate, yeah i was thinking the two small holes are inlets. The holes go through the other side of the saddle just under the ways, will get some more photos to show you.
    Cheers,
    Mark.

  8. #23
    Join Date
    Oct 2016
    Location
    Melbourne
    Posts
    470

    Default

    I was going to fit the apron back onto the lathe, when i decided to put oil in the apron and test out the two oil pumps. The push type oil pump is working but the hand wheel pump was not pumping oil into the small oil reservoir, so i drain the oil out and remove the bottom plate and got the pump out the plunger was stuck. Pulled it apart as you can see a part of the spring has broken off, so have to shop a heavy gage spring.


    Resize of IMG_5920.jpgResize of IMG_5918.jpgResize of IMG_5919.jpg

  9. #24
    Join Date
    Oct 2011
    Location
    Norwood-ish, Adelaide
    Age
    59
    Posts
    6,541

    Default

    I have a grab box of springs. If you can post some measurements I'll see what I have.

    Michael

  10. #25
    Join Date
    Dec 2013
    Location
    Sydney
    Posts
    201

    Default

    That big green and red hardware store chain has a surprisingly large range of springs.

    Graham.

  11. #26
    Join Date
    Oct 2016
    Location
    Melbourne
    Posts
    470

    Default

    Hi Michael, thanks for the offer, but i will check out my local industrial supply store first. Been looking at oil plunger springs which might work out, I"ll do some shopping around tomorrow .

    Cheers,
    Mark.

  12. #27
    Join Date
    Oct 2016
    Location
    Melbourne
    Posts
    470

    Default

    Hi Graham,
    Yeah will have a look and just up the road from them is Pete's Bargain center, he got all sorts of items new and second hand.

    Cheers,
    Mark.

  13. #28
    Join Date
    Oct 2016
    Location
    Melbourne
    Posts
    470

    Default

    I manage to find a comp spring for the oil pump. Did a test all good resealed the bottom plate on the apron and attach the apron onto the lathe.

    Resize of IMG_5923.jpgResize of IMG_5924.jpgResize of IMG_5925.jpgResize of IMG_5926.jpgResize of IMG_5928.jpg

  14. #29
    Join Date
    Apr 2013
    Location
    Toowoomba Qld
    Posts
    401

    Default

    I notice the lifting hooks on the apron, I'm guessing it had a bit of weight to it.

    Looking real nice tho, certainly cleans up nicely

  15. #30
    Join Date
    Oct 2016
    Location
    Melbourne
    Posts
    470

    Default

    Quote Originally Posted by MasterSpoon View Post
    I notice the lifting hooks on the apron, I'm guessing it had a bit of weight to it.

    Looking real nice tho, certainly cleans up nicely
    Thanks mate, Yeah the apron is to heavy for one person to lift, so is the saddle and i have the engine crane so why not use it. Still a lot more to do, will start on the tail stock soon

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