PCP hammer lube and the Franken-rod

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As the original architect of the MDS hammers having done years of R&D with them, there fit requirements, surface prep, lubes etc ....

DRY running on a smooth @ 400/600 grit wet/dry sandpaper surface finish works the best. They need to be run with .008 to .015" clearance because they do grow & shrink more than a steel hammer with temp & humidity shifts.



Agree on nearly all applications ... hammer lubes aside from dry film types create drag & attract debris / hold dirt and will cause ES issues & inconsistencies in general.



Scott S
 
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signal3 said:
The .25 Marauder: Installed a Hill max performance matched parts kit some time back. Today installed the JSAR side cocking breech, aluminum tube, and mds hammer. Hill included a graphite powder for lube. This works quite well but when disassembling today I became concerned that fine particles may enter the valve through any gap that may exist between the valve stem and valve. Hill hammer is a lightweight aluminum. When assembling with the MDS hammer I used a PTFE dry lube instead of the graphite. I ran two magazines and all seems well. What lube do you use for PCP hammers...specifically MDS sleeved hammers?

Franken-rod:View attachment 43314
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Your Marauder is very nice
 
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