Modifications for the Nerf Ultra 2 to improve performance
This is essentially a replacement for the Ultra 2 to fire regular sized elite darts. Currently there is a single 9 dart replacement cylinder, its retention plate, a pusher, and flywheel cages meant for 130-180 sized motors.
Other than the actual components of the flywheel cage (i.e. motors, wheels) a stronger spring or a doubled up one can be used for the kit, however it is optional. The spring helps with retaining cylinder position WHILE NOT FIRING thus it is prefrence whether your cylinder holds well enough for you.
I have taken the time to add a parametric feature to the fusion 360 file, so if you want a flywheel spacing that I didnt supply as an stl it should be as simple as putting in the new preffered dimention in a single, highlited and named spot in the parametric menu.
There are currently two sets of flywheel cages and pushers, original and V2. They both function perfectly, however the V2 has been optimised for fewest parts, and least amount of material (both support and actual print).
If you like this design but don't have a printer yourself, you can purchase it from Rad Blasters on etsy https://www.etsy.com/shop/RadBlasters.
This kit is not just a drop in, you will need to make some permanent modifications to the blaster, however the changes should not impact switching back to the stock hardware.
To make the blaster feed consistently, you'll need to cut away some material near the pusher. Below are some photos of how your blaster should look after you make the cuts.
You will also need to make sure your trigger has the longest possible draw, so make sure it is aligned as below.
Thr grip filler is a single, snap-in part that fills in the front and sides of the grip to make it more comfortable. The insert works with the stock rev trigger, but the rev trigger goes nearly flush against it, so I will make a new rev trigger soon.
Below is installation photos.
First place the grip up against the circle at the top of the rev trigger.
Then push the tabs over the triangular knob on the bottom.
Lightly squeeze the sides to make sure its in and it should be solid. To remove pull up on both of the tabs that point to the bottom of the grip and rotate it out.
Future plans for the blaster are:
- brushless motor support, as the flywheel cage is similar in dimention to the cage used on Shadow Price
- rev trigger with a greater slant or curved surface, akin to Bobololo's rev trigger
- cosmetic variants to the barrel that would replace the entire component pair
As a final note, I'm working on my own micro-brushless flywheel hand-cannons so most likely I wont get to everything on this list. I do , however, want to "port" (measure and try to copy the blaster into CAD) as much of the blaster as I can so that anyone who is passionate of the blaster can get right into personalizing and modding it, instead of spending days measuring and testing first.
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
