birdman99 Posted October 29, 2009 Report Share Posted October 29, 2009 As some of you may know from talking to me on other posts i have just bought a german hw90 i am not sure if it is up to its maxium power and wundered if anyone has the means to give it a air pres test for me.Havent got the cash to buy one so this is the only way i can think of untill i start working again. Im a substance and alchol worker so i work in different projects,the one ive just left i was there five years so ive had a good run at that,just thought id tell ye abit about what i do,you might need me to dry you out one day,ha,ha. Quote Link to comment Share on other sites More sharing options...
John_R Posted October 29, 2009 Report Share Posted October 29, 2009 See if anyone local can chrono the gun first. More folk would have a chrono than the means to test the gas ram. Quote Link to comment Share on other sites More sharing options...
peek-at Posted October 29, 2009 Report Share Posted October 29, 2009 If you dont know anyone with a chrono, have a word with your local gun shop. I also have a HW90 which was slowly losing pressure and they tested it on a chrono, left it a few weeks and tested it again proving that it was in fact losing pressure. Any good gun shop should do this free of charge with a view to doing any required repairs. Mine needed a good service but as there was a query over the gas ram it was sent to 'Hull Cartridge' repairs cost £90. hope this helps Quote Link to comment Share on other sites More sharing options...
farmboy99 Posted October 30, 2009 Report Share Posted October 30, 2009 can you not pump them up? i thought i heard you can shoot air into them somehow to make them more powerful? i was hoping to do it to mine on day! Quote Link to comment Share on other sites More sharing options...
birdman99 Posted October 30, 2009 Author Report Share Posted October 30, 2009 yes you can pump them up but you need a a special pump and it is better to test the power with a chrono i need someone near my area to offer help someone will hav=ve a pump in the north east area.ANYONE KNOW ANYONE.WOULD BE WILLING TO PAY FOR A PUMP UP................. Quote Link to comment Share on other sites More sharing options...
edr Posted October 30, 2009 Report Share Posted October 30, 2009 I think the pumps are the same as mountain bikes with air forks, but dont quote me? Maybe These Quote Link to comment Share on other sites More sharing options...
Norrie Posted October 30, 2009 Report Share Posted October 30, 2009 (edited) Hi there, I have an HW 90 too, and a Theoben pump...and have been told by the guns previous owner, a mate who has an FAC, and does pest control, that from empty, each pump puts 1lb pressure into the gun....so...count the pumps, and get yer poundage...tho...according to him, a chronograph is obviously the best way to go.... Edited October 30, 2009 by Norrie Quote Link to comment Share on other sites More sharing options...
peek-at Posted October 31, 2009 Report Share Posted October 31, 2009 can you not pump them up? i thought i heard you can shoot air into them somehow to make them more powerful? i was hoping to do it to mine on day! you can tune them yourself but you must have a chrono so that you dont go over 12ft/lbs (assuming you dont have an FAC with suitable slot) theoben do the pump and hose for about £80 but a gunsmith will tune it for you for about £20, and once done it will not lose power. (as long as its in good condition that is) so save yourself £60 and possible prosecution. get it done by a gunsmith Quote Link to comment Share on other sites More sharing options...
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