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Post by spamcanman on Jan 23, 2009 20:45:07 GMT
On the Winson Britannia it only has one mechanical lubricator then Modelworks fitted two lubricators to there's has anybody with the Winson had any problems with not enough oil to one cylinder or have they changed for two to be safe?
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simonwass
Part of the e-furniture
Cecil Pagets 2-6-2 of 1908. Engine number 2299. Would make a fascinating model....
Posts: 472
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Post by simonwass on Jan 23, 2009 21:29:44 GMT
No real advantage using two lubricators. I'd rather have just one if there is no sight feed, how would you know if one had stopped pumping oil? Using just the one (obviously a longer stroke) if the chimney goes dry the oil has gone or stopped. If you've got two pumps going to two cylinders if one stops you still have some oil at the chimney and you keep going until something starts complaining!
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Post by a4builder on Jan 24, 2009 18:19:04 GMT
hi
I have a winson brit that I am in the early stages of rebuilding it has one lubricator but I will fit a second and use it to lubricate the motion work eccentric etc axles have roller brgs so do not need lubrication. All my other engines have 1 lubricator and I have had no trouble yet,
terry
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Post by spamcanman on Jan 25, 2009 16:41:52 GMT
I steamed the the Brit today but I'm not sure about that lubricator a) it seems too small to hold a decent amount of oil b) It is of the clutch type and it doesn't seem to be pumping too well. Can I completely change it for something off the shelf although it looks to be a peculiar shape or has anybody had to modify there's in any way  |
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simonwass
Part of the e-furniture
Cecil Pagets 2-6-2 of 1908. Engine number 2299. Would make a fascinating model....
Posts: 472
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Post by simonwass on Jan 25, 2009 20:30:49 GMT
What you could do to incerase capacity is have a 2nd tank hidden behind and communicated with a bit of pipe screwed into both. I made my Spink clutch tank 2x by this method for my Invicta, seemed a good idea at the time but as they arent really continuous runners I could have simply kept topping it up. I was only 12 at the time so had loads of 'good' ideas ;D
Just thinking, I'm sure the 5" 9F has a T shape tank, thin bit visible and huge where hidden under running boards?
What seems to be the trouble anyway?
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Post by spamcanman on Jan 25, 2009 22:28:34 GMT
well now looking at it, it does seem to have enough capacity but I don't think its pumping too well the right side cylinder sounds dry when running  |
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Post by spamcanman on Jan 28, 2009 9:19:24 GMT
I believe SteamFittings originally made the lubricators for Winson in there early days I have spoken with them today and they said the 1" will fit the loco where the old one was. Apparently these are totally new inside has anybody here tried one of them in there own loco www.steamfittings.co.uk/asp/d-no.asp?ProductID=100&Process=1 |
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Post by baggo on Jan 28, 2009 14:23:39 GMT
The lubricators are based on the Jim Ewins design described in EIM July 1982. They use a plunger that passes through 2 O rings with a spacer inbetween. The amount of oil pumped can be altered by changing the thickness of the spacer. I bought one of the kits some time ago but haven't actually used it yet. There's very little to go wrong with them and I would imagine they are pretty reliable. Some of the locos in our club are fitted with them and they seem to work well enough.
As your engine only has the one lubricator it might be worth checking to see how the oil feed is split to feed the 2 cylinders. If the main feed from the pump is just split with a tee and both arms of the tee are more or less the same length then both cylinders should get an equal share of the oil. If each leg of the tee has it's own check valve as well, then, unless both check valves are exactly the same with the same spring pressure on the ball you could finish up with one cylinder getting all the oil and the other getting little or none at all.
John
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Post by spamcanman on Feb 1, 2009 18:24:48 GMT
Hi Baggo, I have checked with 'Steamfittings' and the lubricators on the Modelworks are different to the one on the Winson although they look similar, I have checked the pipe work there is a 'Tee' with two check valves you could be right maybe one is stronger than the other it's worth investigating.
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Post by spamcanman on Feb 1, 2009 20:26:59 GMT
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Post by baggo on Feb 1, 2009 21:05:53 GMT
It sounds like the original clutches were a cause of the lubricator problems. I've used a 1/8" (3mm) clutch on the lubricator for Helen and I had a lot of trouble with it to begin with. As mentioned in the 14XX thread, the 3mm clutches are a bit weak. The 4mm ones should be a lot better.
I had problems with the operating arm containing the clutch tilting so that the arm wasn't at right angles to the shaft. The clutch then tended to slip rather than drive. The problem is that these small clutches really need another plain bearing at the side to maintain the alignment of the clutch with the shaft. It is possible to get clutches with built in plain bearings either side of the roller clutch but I can't remember off hand how small these go down to.
The separate check valves could well be your problem with the unequal oil feed. Would it be possible to remove the valves in the two legs of the tee and fit just one before the tee? That might solve the problem. In fact, according to the article by Jim Ewins, his design lubricator does not need an extra clack in the oil delivery line at all.
John
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Post by spamcanman on Feb 4, 2009 8:36:48 GMT
looking at the lubricator on the Winson they have fitted a 'Tee' with a same length pipe going to each steam cylinder with an inline oil check valve fitted why do you think they did not just fit one check valve before the 'Tee' |
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