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Thread: QB78D bulk fill conversion

  1. #1
    Member just missed's Avatar
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    QB78D bulk fill conversion

    So I installed a long tube from Eric on my QB and currently bulk filling with Co2, its shooting a little hot 640fps and would like to get it back under 500. Would trimming the hammer spring a little at a time do the trick or would a power adjuster be a better solution. Once my pal comes through I'll be switching to hpa.

    John

  2. #2
    Member Dukemeister's Avatar
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    I think installing a smaller TP seal would do the trick and save your hammer spring for the HAP conversion.
    You'll have to experiment with the hole size in the tp seal, but they are easy to make and install.
    Member, Limestone Beekeepers Guild
    Duke ))))----//----------==

  3. #3
    Administrator AirGunEric's Avatar
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    You can trim the hammer spring if it makes it any easier for you- replacement hammer springs are easy to get (now) as an unspecified QB dealer in Canada has plenty of stock...
    I'd say I care- but I'd probably be lying...


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