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Discussion Starter · #1 ·
Hopefully youre not all too tired of my questions about my new PDI hopup for my Type 96, but here it goes. Is there a post somewhere about how to USE the thing? The instructions only "help" to assemble it, and after installation my bb is curving up a ridiculous amount (about 3 to 4 feet above where Im aiming). How do I adjust this thing?
 

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Could there be something in between the nub and the bucking making it over hop? Or you may need to file the nub down a fraction of a millimeter to get it to fully disengage.

I'm looking at a diagram of the chamber and it looks like an over complicated tdc mod. I wish they made this for vsr clones haha.
 

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Improper scope adjustment.
Improper scope technique.
Too high FPS.
Too low BB weight.
Hop-up may actually not be turned off.

Perhaps one of those ^

I own a PDI hop-up and I know it inside out. If none of the above helped you, then it's improper installation.
 

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Discussion Starter · #8 ·
Alright, so my scope is completely zeroed so it is not making any adjustments, my spring shoots .2 bbs at 430 fps, and Im shooting .36 bbs. also, I had been turning the screws as far as possible without breaking my wrench.

However, I how the levers settle on top of the nub, and I noticed they dont go settle into the well. Is this incorrect, and how do i fix it?
 

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Huh? They don't sit in the well on the arm? That would cause the issue...

If so, just file down the arm until it is a flat surface and use glue to hold the nub where it needs to go. Put the nub in the hop unit with the arms up, put glue on the nub, and then put the hop arms down and hope for the best. ;) If something goes wrong, rubbing alcohol usually gets rid of the glue nicely.
 

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However, I how the levers settle on top of the nub, and I noticed they dont go settle into the well. Is this incorrect, and how do i fix it?
If you're afraid to file or want to see if there's another way, can you take a picture from above the arms? Preferably, one picture with the arms down and one picture with the arms up-- so we can see the hop-up opening, bucking+nub, and underside of the hop-up arm.
 

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A nub change would definitely solve the problem. Also, don't use the booster spring if you were using it when it was curving up.

Out of curiosity, when you say the BB curves up 3-4ft from where you aim, how far out is the object?
 

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I might have to file it down, because even when I use a spare little 2.5mm set screw, it still doesnt settle in.

The target was out about 80-100 feet
Hopefully it fixes your problem. Let us know how it turns out :tup:.
 
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