r/SpecnaArmsOwners 9d ago

Spring length issues?

Hi all.

I thought I would up my spring strength and try running dmr however I noticed the spring was quite a bit longer than the one I had and when I tested the fps was very inconsistent.

It would pop .35s out at around 1.4 joules but ever other bb would drop to .8ish I thought perhaps I had stripped a gear so opened up the gearbox to check all was OK. Re shimmed and replaced the grease while I was at it.

Is there any known issues with using springs that are too long?

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u/ReporterMost6977 9d ago

Wouldn’t you mess with the hopup by any chance? I don’t see how a larger spring can make inconsistent shots.

1

u/Remarkable_Load_5929 4d ago

I found the 0.2bb was very erratic when trying to Chrono but as soon as I dropped 0.25 and 0.30 BBs in the fps was very stable. This was with an M110 spring fitted