Hijinx+/Lonx/Minx Experimental Extended Draw Pumps

Hijinx+: 

Replacement pump assembly and plunger to extend the draw of the Lynx near/past the limit of what k25 can do. Will likely cause k25 to settle a little from the additional compression, but most blasters push beyond the elastic deformation limit of springs anyways. Did 280-300fps on my Lynx using a kury pt, 55cm worker barrel, and worker 1g darts (280 with k25, just under 300 on sf25). The k25 did degrade after more shots to 250 average, but the sf25 has not shown wear yet.

Theoretically, a few more mm could potentially be eked out of 18 coils of open ended k25 (~5mm from my measurements, give or take a mm or two), but I haven't tested it yet. The Hijinx++ files test that 140mm draw if you want to try.

A nod to Cent in the BCFF discord for doing a similar mod (the “Higherjinx”) way earlier

Lonx and Minx: 

Add 0.9 or 1 inch (23 or 25mm) of draw to your Lonx to utilize more of your FX-3. The Minx is already utilizing most of an X spring, but some can take 0.2inch (~5mm) of additional compression. SF25-TC can take 10mm more draw, and k25 enables 15mm more if you cut it down further.

You will want to print the tail and modified catch 1 for any variant, and scale the tail longer as necessary.

Print Notes: 

Make sure the transfer bar interface is supported on the pump block. Print the tail on its side and sand a little to avoid introducing print zip.

Hardware: 

• Plunger guide cut shorter for every mm you extend the draw (to 54mm for Hijinx+) from 13.4mm or .527in id barrels or tighter if your spacer print can easily fit.
• If using a k25 type spring, cut to length with at least an inch, preferably more, to spare for settling and further tuning. Slowly cut further if it does not catch. 16-21 coils should fit in the Hijinx+'s compressed space of around 42mm (I used 18). Include inactive coils in the count if your ends are squared.
• Optional PTFE tube slots carried over from the Hijinx that can be stolen from your printer's bowden tubes, though the top does not engage.

Extras: 

• Pump block conversion parts friction fit into the back to make the most annoying part of converting away easier assuming you build spare plungers. Works for the base Hijinx pump and Hijinx++ pump (use 10 less for Hijinx, 5 more for Hijinx++ to get to other lengths). Inspired by ChaosBunny's post of his HiLynx. A no hardware spring guide swap would also be nice, but it runs into issues with how the plunger guide must vary in length and secure against screws.
• Extra Hijinx- spacer thrown in for another tuning option that won't require changing off a hijinx spring guide.
• Modified Hijinx spring guides that constrain k25 better to reduce crunch and rest in 36mm id tubes better