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Replacement eyecups for Nikon Action Extreme 12x50s?

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#1 lxr4345

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Posted 10 November 2020 - 10:05 PM

Love the binoculars, hate the eye cups.  Two questions...

 

1) Is there a way to remove the stock eye cups without damaging the binoculars?  I did some tentative poking around and while I was able to pull back the edges a bit, it seems like the rest is glued on.

 

2) What could I replace them with?  I'm not sure where to even look for such things.  Presumably there's a correct size?

 

Thanks for your collective wisdom, as always.



#2 DrJ1

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Posted 11 November 2020 - 01:04 PM

I have the same binocs and also love them.  It is my second pair.  The first pair was defective and the eye cups fell off!  The eyecups work perfectly on my second pair.  I suggest that you search "rubber microscope eye cups" on ebay and see if any standard size is about the correct size.  I've done this with good results on legacy binoculars.  In one case I turned the eyecups upside down and it fit perfectly.  The rubber eyecups are inexpensive enough to buy a couple of pairs and try them. They do stretch.  DrJ1 


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#3 lxr4345

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Posted 12 November 2020 - 08:22 PM

Thanks!  Do you stretch the new eyecups over the old ones, or remove the OEM ones first?



#4 DrJ1

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Posted 12 November 2020 - 10:31 PM

I put a pair of rubber eyecups on wide angle Tasco 7x35s that had a sharp chip on one plastic eyepiece.  I unscrewed both plastic eyepieces and stretched the rubber eyecups over the metal occular tubes.  Works REAL well.  I also put rubber eyepieces on a high quality B&L 10x28 that I bought with no factory eyepieces. The 10x28 binocs now work great.  i suspect you'll have to remove the eyecups from the Nikons because they have a large diameter.  I don't recall seeing rubber eyecups that large.  You'll have to measure the diameter of the occular tubes and see if you can find rubber eyecups close in size.  DrJ1


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#5 DrJ1

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Posted 12 November 2020 - 10:34 PM

Here are some 40-mm diameter eycups on e-bay.  That is quite large!

 

https://www.ebay.com...CLK|clp:2334524


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#6 grzybu

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Posted 17 November 2020 - 10:18 AM

Hi,

The day I've bough my pair of  AE 12x50 I've designed and printed new eyecups. This design works much better for me:

post-56031-0-28161000-1546779842.jpg

 

Here is the link to the thread: https://www.cloudyni...nikon-ae-12x50/


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#7 lxr4345

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Posted 17 November 2020 - 04:09 PM

wow, I wish I had a 3D printer!



#8 PEterW

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Posted 17 November 2020 - 04:20 PM

There are plenty of printers out there if you only want something small printed off, sure plenty of people could help.

grzybu, your 2x54 eyecups are great, some of my binoculars are IF though I’d need a looser fit, that I could still turn the eyepiece.... hmm, gives me an idea to go play with the designs a bit.
I got some cheap plossl today with “too much” eyerelief, about to test print some “extension tubes” to hold my eyeballs in the right place, also trial some custom binocular stray light shields too.

You can also make your own custom eyecups (I have a range of winged ones) from bike inner tube and contact cement (find the biggest “fat bike” ones and you’ll have a lifetime supply that can fit any optics you might have!

PEter


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