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PostPosted: Fri Apr 12, 2019 6:49 pm 
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Joined: Wed Jul 01, 2015 2:14 pm
Posts: 290
Location: Manitoba
I found an upgrade for the gauge on my BSA Scorpion SE. Original gauge only went to 250bar, this one you can get up to 350bar. Since I fill to 232 bar it is hard on the gauge because it is almost pinned to end of the scale. ( gauge now reads 50bar when rifle is empty of air )
On the 350 bar gauge the needle will sit roughly half way on gauge when rifle is full so less stress on the spiral tube inside. That is my theory anyways.
This gauge should fit air rifles with 23mm diameter gauge with 1/8 BSP threads.
I don't have one yet so I don't know the accuracy but when I get one I will report back.


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PostPosted: Sat Apr 13, 2019 1:44 am 
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Location: Winnipeg, Canada
Any particular reason to fill that high?

Yeah, I've seen what BSA says with the asterisk, which probably makes it the highest recommended fill pressure.
My (unregulated) experience has been that the better, flatter shot strings occur well below max fill pressure, but to each his own...

-D.S.

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PostPosted: Sat Apr 13, 2019 3:07 am 
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Location: Manitoba
Quote:
Any particular reason to fill that high?

Well Doc I guess my answer would be more shots and the max fill pressure is 232bar, the air cylinder capacity is only 130cc, your reasoning would apply to an unregulated rifle like you say but I have a Huma regulator in my rifle.

Just noticed I forgot to put the link in the first post. Here it is. https://www.bestfittings.co.uk/shop/pressure-gauges/23mm-miniature-pressure-gauges/


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PostPosted: Sat Apr 13, 2019 3:34 am 
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Location: Winnipeg, Canada
Kinda figured it was volume related.

Not trying to be rude or mean, not by a long shot.

I haven't had much luck with gauges, and I limit fills to 200 bar, on tubes that are rated for it. Usual all purpose fill actually runs to about 175. The only gauge that seems to have some semblance of sanity is the one on my Hill pump. Actually considering a plug or blank block for the one rifle I have with a gauge...

-D.S.

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"Ain't no half-way"
-S.R.V.

Eye Protection!


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PostPosted: Sat Apr 13, 2019 4:14 am 
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Location: Manitoba
No problem Doc. Bad luck for me with gauges on two rifles, my Brother's Marauder and my Scorpion. I am also using my Hill pump gauge for now until I can scrape up enough cash for the 350bar gauge. The gauge on the Disco is still holding up so far.


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PostPosted: Sat Apr 13, 2019 8:45 am 
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Try here ?


http://snip.li/COY1a


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Guages.JPG
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PostPosted: Sat Apr 13, 2019 1:38 pm 
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Location: Manitoba
Thanks Pelsby, I already ordered two of those type gauges for the Marauder. Unfortunatly they will not work with my Scorpion SE, wrong threads and to big in diameter


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PostPosted: Sat Apr 13, 2019 6:11 pm 
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I would hazard a guess that they are the same diameter 23mm vs 23.74mm. Odd though that they come with a bonded washer or teflon gasket . Those are used with straight BSP thread forms . They are specd as 1/8- 27 npt witch uses sealant or tape . 1/8 bsp is 28 T.P.I. and is a straight thread that seals at one end or the other depending on the surfaces of the application . I have 3 on their way so we will see what arrives !


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PostPosted: Sat Apr 13, 2019 7:25 pm 
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Location: Manitoba
The gauge I linked is 23mm outside diameter at the widest part, the gauge you linked are 23.74 on the flats, if you measure the widest part of the gauge you linked it would be 1 inch, to big for the Scorpion but would work for the Marauder.


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PostPosted: Sat Apr 13, 2019 7:46 pm 
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I will update everyone when they are in hand on the actual size . I have my suspicions that they will be bsp not npt as advertised and the diameter will be revealed by my vernier . Parcels from China have been coming in as little as three weeks since the end of the postal dispute and I hope these are no exception .


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PostPosted: Sat Apr 13, 2019 8:42 pm 
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Joined: Wed Jul 01, 2015 2:14 pm
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Location: Manitoba
They have the size listed in the " Item Specifics " part of listing,
Quote:
size:one inch/25.4mm
.
When I ordered my RC stuff from Ali Express shipping time was not bad, around three weeks like you said.


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PostPosted: Wed Apr 17, 2019 10:51 pm 
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Location: Manitoba
Ordered the 350bar 1/8 BSP gauge, update when I get it.


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