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Spa Pr900W Transfer Port


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#1 bsasuperten

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Posted 18 May 2017 - 08:04 am

morning lads just purchased this chinese pcp i know it's not in hw 100 league but at the price i could buy 4 of them to 1 hw 100  so shipped fron europe arrived had a test fire loud stripped it it had the larger transfer port fitted 3.2mm as  high power not the uk spec 1.4mm 12ft lbs joby so is there any advantage in chamfering the transfer port from air reciever side towards the barrel inlet just to aid the airflow the same amount of air is released every shot so depending on hole size the power is vaiable but the same number of shots per fill is constant but  the air is strangled with the littler hole in anybody got thoughts on this bsasuperten

#2 bsasuperten

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Posted 27 May 2017 - 02:09 pm

all sorted now transfer port drilled to 1.7 mm chamfered with 45 countersink and running at 11.47 with 8.4 jsb exacts
tried it out last night on my perm was quite supprized at how accurate it was probably 40 good shots nice and light so at £200 i think it's a bit of a bargain
bsasuperten
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#3 stealthy1

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Posted 27 May 2017 - 03:31 pm

Put some pix up.  :thumbs:



#4 stecorr

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Posted 29 May 2017 - 09:41 am

yeah, lets have a look at it.....curious here  :yes:



#5 bsasuperten

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Posted 30 May 2017 - 07:54 am

sorry lads can't do pic's dont know how to
bsasuperten


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