223 and EJ230 scope less rig

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clembob
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Joined: 25 Dec 2013, 17:57
Location: Chester

223 and EJ230 scope less rig

Post by clembob » 09 May 2015, 21:24

Hi
Can an EJ230 take the recoil from a 223 ?

I build an EJ230 scope less set up with SB parts work great but when I fire the screen goes black for a second.
I don't think anything powers off as the input indication does not come up on the screen like when first power on.

When using on my 17 hmr this does not happen.

Any thoughts.

Cheers Mark

phoenix
BRUCE ALMIGHTY
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Re: 223 and EJ230 scope less rig

Post by phoenix » 09 May 2015, 21:39

Sounds like you've got a bad connection or solder joint somewhere.

Cheers

bruce
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ubin2
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Joined: 09 Jun 2014, 23:11
Location: Swansea

Re: 223 and EJ230 scope less rig

Post by ubin2 » 09 May 2015, 23:36

I use an EJ230 scopeless on a .222 without issues with the near eye viewer and/or the screen, so I would support Bruce's view that you may have a bad connection somewhere.

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some bloke
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Re: 223 and EJ230 scope less rig

Post by some bloke » 10 May 2015, 03:38

Hmm - at no more than 6 mag power I never intended the scopeless rigs to be used as a centrefire rig TBH, but there is an issue if you do:
I think at least one of your batteries move a tad with the recoil - which causes the monitor to restart at the very time you want to see the bullet strike.

Now that I am supplying add-on rigs it's becoming more apparent that the idea of slotting user supplied 18650's into the battery carriers is not up to some centrefire recoil levels unless I find a way of supporting them.

The issue is complicated by the fact that 18650's come in at least three different lengths - and my design requires that I make the rig to take all three, and some are also fatter than others. The result is that some fit tighter than others.

If the longest and fattest protected cells are used - especially with a piece of foam rubber strip on the rear of the monitor nestling against them they seem to do fine.

I'm open to suggestions chaps but will not under any circumstances supply any device with fitted batteries. :angel:
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Radagast
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Location: Sydney Australia

Re: 223 and EJ230 scope less rig

Post by Radagast » 10 May 2015, 07:55

Easy Peasy Dave. Just tell people what batteries to buy. If they wanted to save money and consume time, they would be scratch building rather than buying from you. Instead they are relying on your expertise. So add a note with each build that you recommend 'X battery'. You don't even have to recommend a supplier, although Torchy and Banggood are safe bets to deliver what was ordered.
I'm guessing protected Panasonics with the gold disc protection board are the longest.

jonny.k
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Joined: 10 Sep 2014, 15:37
Location: Kidsgrove, Stoke on Trent

Re: 223 and EJ230 scope less rig

Post by jonny.k » 10 May 2015, 09:53

I have one of Dave's NV rigs and i had the same problem with screen shut off when firing. He pointed me in the right direction and it was due to a bad battery connection. I replaced the battery tray with a one piece unit, and fitted the longer protected batteries with a piece of foam at the back of the screen just in case,, all sorted now. :thumbup:

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some bloke
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Re: 223 and EJ230 scope less rig

Post by some bloke » 10 May 2015, 09:58

Cheers radders lol.

Well I've had a good long diagnostic look at the twin 18650 holders currently used in my builds.

There is a distinct gap in which the battery can freely move before engaging the wings that are on one side of them. :crazy:

It's occurred to me that existing ones can be vastly improved by wrapping the batteries in gaffer tape so they take up some of the slack.

I'll be trying single 18650 carriers side by side which have wings either side of each battery - and the wings are closer to the base of the carrier so they should engage the thinner batteries.
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Radagast
junior librarian
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Location: Sydney Australia

Re: 223 and EJ230 scope less rig

Post by Radagast » 10 May 2015, 11:35

Let us know how you go. I have both types in my 'gonna build something one day' box.

clembob
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Joined: 25 Dec 2013, 17:57
Location: Chester

Re: 223 and EJ230 scope less rig

Post by clembob » 10 May 2015, 15:08

Hi All

Cheers for the comments I will have a good look at the battery holder and see what I can do.

ubin2
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Joined: 09 Jun 2014, 23:11
Location: Swansea

Re: 223 and EJ230 scope less rig

Post by ubin2 » 10 May 2015, 20:04

Just to clarify a point that Dave has mentioned, when I said I use a scopeless on the .222 I really should have said it was a Futon style scopeless build and mine is powered by way of a separate battery pack, which is probably why I do not have this issue with either screen or near eye display.

Apologies for any confusion :oops: .

Tony.

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