Bali Posted July 5, 2008 Report Share Posted July 5, 2008 Hi Can any one tell me how much pressure to put in my mates Theoben .22 H-E Air Rifle he has brought it to me as I use a bottle to charge my BSA Ultra.The rifle is about 16 years old so I can't find any info. I dont want to put to much air in and damage his gun Thanks for any info help Nick Quote Link to comment Share on other sites More sharing options...
TONYG Posted July 5, 2008 Report Share Posted July 5, 2008 have you got the slim jim pump and hose,only way to test rifle,is to chrono it 1st,see what its puttin out,if its low on power,give it one pump of air with pump,and chrono it,will have do this everytime you pump handle,if ftlb is to high,slightly depress valve at back of gun,which will release some air,and again chrono it,any trouble,pm me. Quote Link to comment Share on other sites More sharing options...
Bali Posted July 5, 2008 Author Report Share Posted July 5, 2008 Hi TonyG I am using a diving bottle but I can chrono I will give it a go Thanks Nick Quote Link to comment Share on other sites More sharing options...
TONYG Posted July 5, 2008 Report Share Posted July 5, 2008 would'nt dare do it with a bottle mate,easiest way to blow your seals,really has to be the slim jim pump,what ftlb is the rifle Quote Link to comment Share on other sites More sharing options...
Bali Posted July 5, 2008 Author Report Share Posted July 5, 2008 Got it to 10 that will do him I will pass on the info regarding using a slim jim Thanks for your help Take it easy Nick Quote Link to comment Share on other sites More sharing options...
bullet boy Posted July 5, 2008 Report Share Posted July 5, 2008 When in doubt speak to the professionals-ask Theoben themselves.ATB. Quote Link to comment Share on other sites More sharing options...
Bali Posted July 6, 2008 Author Report Share Posted July 6, 2008 Hi My mate did ask Theoben but they would not give a pressure because it could take the rifle over 12 ftlbs or that is what he thinks Quote Link to comment Share on other sites More sharing options...
njc110381 Posted July 7, 2008 Report Share Posted July 7, 2008 To cheat a little I've looked on the Weihrauch site at their HW90. That uses the gas ram system and max pressure is listed at 26 bar. I'd be very cautious of sending it up that far though, as the 90 is capable of quite some power and would certainly go well over the UK limit. I'd say take it to a gun smith. My local shop can do it and say it's an easy job, so I doubt it's expensive. Much better to do it the safe way Quote Link to comment Share on other sites More sharing options...
bullet boy Posted July 7, 2008 Report Share Posted July 7, 2008 I really cant believe Theoben!It doesnt make any sense if they didnt supply the info your mate needed.Its their product! Quote Link to comment Share on other sites More sharing options...
Bali Posted July 7, 2008 Author Report Share Posted July 7, 2008 Thanks for your input. 26 bar no wonder it blxxdy dangerous to use a diving bottle. I can only say my mate asked the same question to Theoben and they would not commit themselves maybe because the the rifle is fairly old now Thanks again Nick Quote Link to comment Share on other sites More sharing options...
martin1 Posted July 12, 2008 Report Share Posted July 12, 2008 i agree with tonyG, theoben seem to be verry funny, bsa are like that to.. hate any one messing and would rather them fork out payin them for a service.. i got theoben brochure the other day, slim jims are around £80. i have seen them on ebay for cheap.. chrono and slim jim and i would go the diy route as for the service cost you may as well get the slim jum. im sure that brocock ones also fit but not to sure. Quote Link to comment Share on other sites More sharing options...
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