Quote:
Originally Posted by kudykam
According to chart Prometheus MS120 is the same strangth as my PDI 170%. Where is the improvement?
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I was under the impression you wanted to achieve 420-430 fps. The MS120 will get you there. If you want more fps, buy a slightly stronger spring.
Quote:
Originally Posted by kudykam
If I remove bearings on piston side, I'll get extra 4 mm, but spring is still 175mm long. It would take a lot of struggle to fit it in. Is there any special way to do it? Not mentioning the possible jamming.
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I'm not sure I'm getting what the problem is? Not all springs are the same length, diameter, or made of the same wire. Every manufacturer's tolerances are different. If you're trying to find a spring the exact same length as your PDI, good luck. I've never had issues with Prometheus parts not fitting.
Quote:
Originally Posted by kudykam
Which cylinder would you recommend then?
Or maybe I can just drill a larger hole to the cylinder to lover total volume. No need to spend anotehr money...
The cylinder I have is recommended for 200-400 mm barrel, not sure if 100 mm will lmake any difference...
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I'd go with this, but that's just my opinion.
http://redwolfairsoft.com/redwolf/ai...l?prodID=17683
Quote:
Originally Posted by kudykam
Hm so I have ball bearings after all. I will buy new ceramic bushings then. (do they have any at redwolf?) Is 7mm enought?? Otherwise I would have to buy new gearbox with 8 mm holes or drill new holes to my current one to fit 8mm bushings.
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Unless you have some pretty high end machinery, I wouldn't try to enlarge the bushing holes yourself....get even one of them off-centre and you'll be buying a new mechbox, bushings, piston, and probably gears.
Personally, I would just buy a 8mm gearbox and Kanzen 8mm ceramic bearings, but since you're on a budget, get Kanzen 7mm ceramic bearings and you should be ok.
review:
http://infectedairsoft.wordpress.com...ball-bearings/
buy here:
http://www.airsplat.com/Items/AC-UPI-KZ-SYN-7.htm