deanothehunter 34 Posted August 3, 2011 Report Share Posted August 3, 2011 I have been given an old BSA supersport by a friend thats been through the wars its all in working order but needed a new main spring as it was putting out around 8 and a half ft lbs with the old spring. I ordered a new main spring and put in after degreasing all internals then re assembling, a good few years back I knew a gunsmith quite well and he was always good to me and giving valuable info on re fitting springs pistons etc. I basically followed his advice by applying a fine smear of moly grease to piston itself and same with the spring as he said never pack them like factories do it takes years to burn off and deisels for ever. He also said when putting back piston just smear piston with grease but leave the piston seal till last just before re inserting and all that need was not grease at all but 1 drop of silicone oil smeared around edge and top just to put a film on it and thats it but before putting it back apply just one more drop to a rag on end of dowel and put a film of this silicone oil in the first 3 inches of the cylinder at the transfer port end which I did then re-asembled all other parts, its now shooting very well but putting out around 10.17 ft lbs consistantly after bedding in with between 50 and 100 pellets like the old gunsmith told me to do to settle all components back in. I only had one pellet to try and they were 14.5 grain rws superpoints im quite happy with its consistancy but thought new spring would of took it to 11 ish ft lbs with average weight pellets should I now leave well alone ?? I was also told with springers a lighter pellet will give highest ft lb reading where on pre charged its opposite a heavier will be better but 10.17 ft lbs is'nt bad really Quote Link to post
andyfr1968 772 Posted August 3, 2011 Report Share Posted August 3, 2011 Ten ish is fine, Deano, so long as the gun's accurate. Check it again after the first 500 or so shots because it can take a good while for a re built springer to fully settle down. Cheers. Quote Link to post
deanothehunter 34 Posted August 3, 2011 Author Report Share Posted August 3, 2011 Cheers mate I will bare that in mind and ten + is,nt a too bad foot poundage maybe once it fully settles it'll rise a touch more still Quote Link to post
andyfr1968 772 Posted August 3, 2011 Report Share Posted August 3, 2011 Ten's plenty good enough so long as the shots hit the right spot. My .20 HW90 shoots best with H and N Baracudas and FTTs. The Baras leave the gun at 9.75 and the FTTs at 11.4. They both do the job equally well so long as I do my bit. Quote Link to post
deanothehunter 34 Posted August 4, 2011 Author Report Share Posted August 4, 2011 Ten's plenty good enough so long as the shots hit the right spot. My .20 HW90 shoots best with H and N Baracudas and FTTs. The Baras leave the gun at 9.75 and the FTTs at 11.4. They both do the job equally well so long as I do my bit. Thats spot on mate its usually down to the person behind the trigger, but we do like to blame our tools now and then but im pretty used to springers so sur it will be fine Quote Link to post
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