Join for FREE
It only takes a minute!
Magnifying the passion for nature. Zeiss Victory Harpia 95. New!

Welcome to BirdForum.
BirdForum is the net's largest birding community, dedicated to wild birds and birding, and is absolutely FREE! You are most welcome to register for an account, which allows you to take part in lively discussions in the forum, post your pictures in the gallery and more.

Reply
 
Thread Tools Rate Thread
Old Sunday 29th May 2016, 19:01   #1
Saxatilis
Registered User

 
Join Date: May 2014
Location: Genoa
Posts: 108
Fieldscope ED 82 having lost waterproof sealing

Hello all

my excellent Nikon Fieldscope ED82, bought as used in excellent optical conditions, has however proved devoid its pristine waterproof sealing.

Not a really big problem itself to me (I use it in raptor watching and rainy days are not good for migrating raptors...) but should I decide to repair who should I send it? Directly to Nikon Europe (I live in Italy)?

Has someone ever experienced this fault?
If so, which would be the times and the repairs costs?

Thank you
Saxatilis is offline  
Reply With Quote
Old Wednesday 22nd June 2016, 22:20   #2
Kevin Conville
yardbirder
 
Kevin Conville's Avatar

 
Join Date: Feb 2008
Location: State of Chaos
Posts: 1,692
Have you determined where the water is coming in?
Have you checked/replaced the O-ring on the eyepiece?
__________________
my bird pics

Scott's Miracle Grow KILLING Birds, for Years!
read this: http://www.birdforum.net/showthread.php?t=226714
Kevin Conville is online now  
Reply With Quote

BF Supporter 2009 2010 2011 2012 2013 Support BirdForum With A Donation

Old Thursday 23rd June 2016, 21:24   #3
Saxatilis
Registered User

 
Join Date: May 2014
Location: Genoa
Posts: 108
Quote:
Originally Posted by Kevin Conville View Post
Have you determined where the water is coming in?
Have you checked/replaced the O-ring on the eyepiece?
Kevin
Not exactly. Some months after buying it in used conditions, I deliberately kept it in the rain for 30-40 minutes just to check its waterproofness: it showed an internal condensation behind the objective that disappeared after exposing directly to the sunlight.
How can I check the O-ring effectiveness on the eyepiece? I own different fixed WF eyepieces (30x DS and MC, 38x MC, etc).
Thank you
Saxatilis is offline  
Reply With Quote
Old Thursday 23rd June 2016, 23:30   #4
Kevin Conville
yardbirder
 
Kevin Conville's Avatar

 
Join Date: Feb 2008
Location: State of Chaos
Posts: 1,692
OK, with this latest bit of info we can conclude there is a breach somewhere in the body of the scope. The nitrogen is gone and water can get in. If you want this to stop it needs repair and I would contact Nikon as to the wheres and the hows.

I asked about the O-ring as, without knowing where the moisture gathered before, water can get past the O-ring if worn or just old. O-rings change shape over time from just being compressed. There is, of course, a glass window that separates the EP chamber from the rest of the scope so IF water entered the scope past the eyepiece it should not enter the scope body.

Two ways I use to check O-rings are visual examination and feel.

The first is done by taking it off the EP and looking at it with a magnifying glass. Is it round in cross section or does it have flat spots?

The second (feel) method is when you are just about at metal to metal while screwing the EP down can you feel the O-ring being compressed? If you don't, replace it.

BTW, you don't have to get Nikon rings necessarily as long as you can match the diameter within reason and particularly the cross section diameter, hardware store O-rings will work fine.

If you decide to have Nikon repair it, ask them for enough O-rings for your EPs.
__________________
my bird pics

Scott's Miracle Grow KILLING Birds, for Years!
read this: http://www.birdforum.net/showthread.php?t=226714

Last edited by Kevin Conville : Thursday 23rd June 2016 at 23:49.
Kevin Conville is online now  
Reply With Quote

BF Supporter 2009 2010 2011 2012 2013 Support BirdForum With A Donation

Old Friday 24th June 2016, 17:41   #5
Saxatilis
Registered User

 
Join Date: May 2014
Location: Genoa
Posts: 108
Kevin
thank you for valued information
Saxatilis is offline  
Reply With Quote
Old Friday 24th June 2016, 19:16   #6
Kevin Conville
yardbirder
 
Kevin Conville's Avatar

 
Join Date: Feb 2008
Location: State of Chaos
Posts: 1,692
You're welcome. Good luck with it.
__________________
my bird pics

Scott's Miracle Grow KILLING Birds, for Years!
read this: http://www.birdforum.net/showthread.php?t=226714
Kevin Conville is online now  
Reply With Quote

BF Supporter 2009 2010 2011 2012 2013 Support BirdForum With A Donation

Old Saturday 25th June 2016, 10:49   #7
kabsetz
Registered User

 
Join Date: Jun 2004
Location: Finland
Posts: 1,409
Saxatilis,

If you haven't yet, go read the most recent thread in the Leica sub forum about dismantling an Apo-Televid 77. It has useful information about nitrogen filling among others. The Fieldscope ED 82 can be opened quite easily, by just twisting the objective cell off the objective tube (the black part with the sliding lens hood from the yellow-green painted tube). You can then fill the scope with nitrogen as per the instructions given by Yves.

If you were to do this, before you start dismantling, make an alignment mark into the objective cell and the main tube so that when you re-assemble, you get the parts in exactly the same rotational orientation they were in originally. This is important because the optical elements in the objective cell and the focussing unit deeper in the tube need to be in the intended alignment.

But using a skilled technician is of course a safer bet.

Kimmo
kabsetz is offline  
Reply With Quote
Old Saturday 25th June 2016, 11:47   #8
Saxatilis
Registered User

 
Join Date: May 2014
Location: Genoa
Posts: 108
Quote:
Originally Posted by kabsetz View Post
Saxatilis,

If you haven't yet, go read the most recent thread in the Leica sub forum about dismantling an Apo-Televid 77. It has useful information about nitrogen filling among others. The Fieldscope ED 82 can be opened quite easily, by just twisting the objective cell off the objective tube (the black part with the sliding lens hood from the yellow-green painted tube). You can then fill the scope with nitrogen as per the instructions given by Yves.

If you were to do this, before you start dismantling, make an alignment mark into the objective cell and the main tube so that when you re-assemble, you get the parts in exactly the same rotational orientation they were in originally. This is important because the optical elements in the objective cell and the focussing unit deeper in the tube need to be in the intended alignment.

But using a skilled technician is of course a safer bet.

Kimmo

Great Kimmo
thank you! I had not read the thread concerning the nitrogen filling of the Apo Televid.
However I prefer to speak to a technician who might fix the problem.
But this is interesting indeed!
Saxatilis is offline  
Reply With Quote
Old Tuesday 28th June 2016, 02:57   #9
NDhunter
Registered User
 
NDhunter's Avatar

 
Join Date: Mar 2009
Location: ND
Posts: 3,506
I need to say it, deliberately leaving any scope out in the rain is asking for trouble.

Why did you give it this trial?

Jerry
NDhunter is offline  
Reply With Quote
Old Tuesday 28th June 2016, 15:25   #10
Saxatilis
Registered User

 
Join Date: May 2014
Location: Genoa
Posts: 108
Quote:
Originally Posted by NDhunter View Post
I need to say it, deliberately leaving any scope out in the rain is asking for trouble.

Why did you give it this trial?

Jerry

Simply because I knew it was a waterproof model and I wanted to test my specimen bought as used. In fact, although optically perfect, its waterproofness was defective.
Saxatilis is offline  
Reply With Quote
Old Tuesday 28th June 2016, 17:49   #11
giosblue
Registered User

 
Join Date: Oct 2015
Location: Ashton
Posts: 244
And now you have your answer. Personally I would have just put it to normal use, and it would have most likely have been fine.
giosblue is offline  
Reply With Quote
Advertisement
Reply


Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Waterproof EII's? denco@comcast.n Binoculars 40 Thursday 14th June 2012 01:05
Sealing a cracked bird bath? Abbygirl Food and Feeders 4 Thursday 13th April 2006 21:58
Best waterproof 8x~32 for less than $200 elkhorn98 Binoculars 21 Wednesday 23rd March 2005 01:55
Waterproof SE Atomic Chicken Nikon 4 Tuesday 1st June 2004 12:45

{googleads}

Fatbirder's Top 1000 Birding Websites

Help support BirdForum

Page generated in 0.17914510 seconds with 22 queries
All times are GMT. The time now is 20:22.