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Old 05-26-2012, 06:04 PM   #1 (permalink)
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bigbthebenji's Avatar
Join Date: Feb 2009
Location: Los Angeles

velocity on sidekick pump

How do you change the velocity on a sidekick pump? After getting my smoke one working and using it today, I am in LOVE with these pumps! My other one is shooting low, maybe 150fps. How do you change the vlocity on these? Can't really see anywhere to adjust. Do I need to change springs? If so, how?

And another thing, anyone know the bores on these barrels? I have one unmodified barrel, and one extended barrel. I was getting rollouts trying to shoot my spark balls, but there are like sub .670

Last edited by bigbthebenji; 05-26-2012 at 06:08 PM.
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Old 05-31-2012, 02:16 AM   #2 (permalink)
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Join Date: May 2011
Location: Pensacola, FL

I'll put up a picture friday if I get home at the right time. The hammer, usually has an aluminum spacer in it right against the spring. If you don't have the spacer, you'll loose some serious velocity. Otherwise you just need a bigger pacer to bring up the velocity.

Like most nelson based pumps, the only way to adjust the thing is to lengthen the spring in between the bolt and the hammer. If you need dimensions on the spacer, I still have one, then again you have two so one might have one. It's kind of a hidden part too, it will fall out if you take it all the way apart.
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