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Anemometer
Posted: Mon 18 Jan 2016 3:09 pm
by iceberg
Hello,
After 2 years of wear and tear my National Geographic 265 NC anemometer is not turning like its suppose too, you really need high wind gusts for it to turn, any ideas on what kind of lubrication i could use if i open it up . I was thinking of using some grease.
Thanks Tony
Re: Anemometer
Posted: Mon 18 Jan 2016 3:17 pm
by duke
Without seeing it it's hard to say, but, usually none. Does it not have sealed bearings? Applying grease will prevent it registering low / light wind speeds.
Re: Anemometer
Posted: Mon 18 Jan 2016 3:36 pm
by iceberg
Here is a picture of how it looks inside, i found it in one of the topics in the forum.
Or does anybody have a site i can order the Anemometer piece i tried to find one but with no avail.
Thanks Tony.
Re: Anemometer
Posted: Mon 18 Jan 2016 8:58 pm
by duke
Just measure that bearing(ID, OD, W), accurately, and order one on-line, should only be a few pence.
Re: Anemometer
Posted: Tue 19 Jan 2016 1:13 am
by Ned
If this is a Fine Offset, the bearing is 5mm ID, 10mm OD and 4mm width.
It should have metal shields protecting the races, but can still dry out. When mine started sticking, a drop or two of very light oil (sewing machine type) was able to seep past the shield and free it up nicely. Still going strong a year later.
If getting a replacement, avoid the rubber seal type as these are not contact free and will add excessive drag.
Re: Anemometer
Posted: Tue 19 Jan 2016 2:23 am
by iceberg
Thank you very much for the information mates.
Re: Anemometer
Posted: Tue 19 Jan 2016 9:43 am
by AllyCat
Hi,
Yes there are at least three possible "fixes":
Adding/cleaning with a thin oil or WD40 might be "good enough".
The bearing is a "standard" size (as above) but note in the photo above that the plastic core is "melted" over the bearing so it might be difficult to remove.
In UK, complete anemometers are available very cheaply from Maplin (£2.50), but that's not much help in Canada. But note that the "latest" production version is different to the photo. It now has a larger outside gap between rotor and stator which can reduce the risks of locking due to ice formation.
Cheers, Alan.
Re: Anemometer
Posted: Tue 19 Jan 2016 10:39 am
by iceberg
AllyCat wrote:Hi,
Yes there are at least three possible "fixes":
Adding/cleaning with a thin oil or WD40 might be "good enough".
The bearing is a "standard" size (as above) but note in the photo above that the plastic core is "melted" over the bearing so it might be difficult to remove.
In UK, complete anemometers are available very cheaply from Maplin (£2.50), but that's not much help in Canada. But note that the "latest" production version is different to the photo. It now has a larger outside gap between rotor and stator which can reduce the risks of locking due to ice formation.
Cheers, Alan.
Thanks Alan
Re: Anemometer
Posted: Sun 01 May 2016 12:53 pm
by frederick
AllyCat wrote:Hi,
Yes there are at least three possible "fixes":
Adding/cleaning with a thin oil or WD40 might be "good enough".
The bearing is a "standard" size (as above) but note in the photo above that the plastic core is "melted" over the bearing so it might be difficult to remove.
In UK, complete anemometers are available very cheaply from Maplin (£2.50), but that's not much help in Canada. But note that the "latest" production version is different to the photo. It now has a larger outside gap between rotor and stator which can reduce the risks of locking due to ice formation.
Cheers, Alan.