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22nd Oct 2016, 08:11 AM #16Most Valued Member
- Join Date
- Sep 2011
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- Ballarat
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- 65
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- 3,103
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
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22nd Oct 2016, 11:19 AM #17
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
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23rd Oct 2016, 07:42 AM #18Most Valued Member
- Join Date
- Sep 2011
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- Ballarat
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- 65
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- 3,103
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
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23rd Oct 2016, 10:29 AM #19
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.
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29th Oct 2016, 06:27 PM #20
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
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29th Oct 2016, 08:23 PM #21Philomath in training
- Join Date
- Oct 2011
- Location
- Norwood-ish, Adelaide
- Age
- 59
- Posts
- 6,561
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
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30th Oct 2016, 02:43 PM #22
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.
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2nd Nov 2016, 03:13 PM #23
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.
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2nd Nov 2016, 03:20 PM #24Philomath in training
- Join Date
- Oct 2011
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- Norwood-ish, Adelaide
- Age
- 59
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- 6,561
I have a grab box of springs. If you can post some measurements I'll see what I have.
Michael
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2nd Nov 2016, 03:24 PM #25Senior Member
- Join Date
- Dec 2013
- Location
- Sydney
- Posts
- 201
That big green and red hardware store chain has a surprisingly large range of springs.
Graham.
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2nd Nov 2016, 04:14 PM #26
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.
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2nd Nov 2016, 04:18 PM #27
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.
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4th Nov 2016, 04:01 PM #28
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.
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4th Nov 2016, 05:19 PM #29Senior Member
- Join Date
- Apr 2013
- Location
- Toowoomba Qld
- Posts
- 401
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
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4th Nov 2016, 06:07 PM #30
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