The Gryphon (Foam Dart Blaster)

thingiverse

Thingiverse seems to be OK at the moment, but if it isn't somehow or isn't in the future, the GitHub repository will always have the most updated version: https://github.com/Flygonial/The-Gryphon-Foam-Dart-Blaster The Gryphon is a mostly 3D printable, hobby-grade, Nerf semi-automatic flywheel blaster. Its main design features are as follows: * Uses 130 to 180 sized (20.4mm) brushed DC motors. * Semi-auto by rack and pinion with 1:3 gear multiplication. The trigger pull is fairly short at 12mm. * Accepts 33 to 38mm OD flywheels (all 2mm shaft fit, superstock upgrade flywheels). * Utilizes a horizontal flywheel cage that bolts directly onto the magwell. This is a mounting pattern less prone to misalignment than a Stryfe's mounting bosses or similar. * Accepts both Worker Talon magazines and printed Jet Katana geometry magazines with a second release slot (ie: Kathanha, Katobu) and therefore, only half-length darts. Subject to change, possibly soon. * Battery is located in the stock--there is no room anywhere else. * Full-length feed guide integrated in magwell for maximum feeding reliability. * 14mm bore flywheel cages. * Bore-axis is almost as close as possible to top rail of blaster, which is theoretically more intuitive to aim with. * Will fit on build volume as small as 120 mm³. Some options/variable features are: * Variable motor center distances from 43.5mm to 38.5mm (Eclipse).' * Full-length, flat-top picatinny rail. * Ambidextrous, or one-sided sling mounts. * A mag release meant to be actuated by the operator's off-hand, and one meant for the dominant hand's middle finger. * Flash hider: Helps work around cover, and can be used to house and launch a mega dart. * Kill-switch mount on stock, and a kill-switch + voltmeter mount on stock. Required for assembly: * Two 130-180 sized motors. * 33 to 38mm, 2mm shaft fit flywheels * 16-18 AWG multi-strand hobby wire * Connectors of choice (XT60, Deans, bullet connectors), and heat shrink. * One full-sized microswitch, 15A or 21A. * M3 nuts * M3 screws: 5mm length, 8mm length, 10mm length, one 14-16mm length for mag release pivot, one 20mm length for one specific screw on the motor cover. * M2 screws: 4-5mm length for motor mounting. * 2x20mm steel dowel pin for the pinion gear. * 0.5mm coil thickness, 5mm diameter compression springs. 15mm in length for the mag release, 50mm in length for the trigger return spring. * An adhesive for stock assembly, preferably methyl methacrylate based. * Modular connectors to flywheel cage and to stock assembly (if using kill switch and/or voltmeter) highly recommended. * 10-20cm length of 25mm OD PVC pipe (length depends on however long you want your stock). 3/4 inch, Schedule 40 PVC is the closest imperial comparison, though I may have to design a stock meant specifically for that. Licensed under CC0, do whatever you please to it. For looking at in-development / untested updates: https://a360.co/2N3szi3 Update Log: V1.01 (05/02/19): Updated 'Stock Cap' piece to be 5mm thick on the screw mounts to the back of the pusher mechanism from 2.5mm (this is a high stress piece if the stock smacks something, it should not have been that thin). Also altered the buttplate to have a more ergonomic depression to wrap around the operator's shoulder. V1.02 (05/11/19): Added split picatinny in the form of the 'Flat Top Picatinny Front' and 'Flat Top Picatinny Rear' (it actually doesn't matter which way you put these on as long as you print both of them). This allows the picatinny rail to fit in smaller build volumes. V1.1 (08/03/19): Includes fixes and little tidbits I forgot to include a long time ago, plus a big extra feature. This includes 3/4'' PVC compatible stocks, a trigger guard that is now fully chamfered where there were sharp edges, a Bobololo styled rev trigger. The big extra feature would be options for two-stage cages. V1.11 (09/28/19): Added the Kathanha / Katobu magwell, actual Katanas cant fit thanks to the magwell mounting solution that was originally used, unfortunately. Up next will be full-length magwells, which might be a while, sorry. V1.12 (01/05/20): I've actually had this done for a while. Added an extra motor cover option for a single-stage cage that can accept a lower rail and has the same lower appearance as the dual-stage cage. V1.13 (01/27/20): A biggie here in terms of compatibility here back: I've redesigned the flywheel cage to allow it to be printed in the opposite of the original orientation: with the side that the motors insert into as the bottom layer. Less supports (though still recommended), and hopefully less alignment issues with warping and other print defects. This required making the cage 1.5mm thicker (and in order to minimize this extension, I reduced the bottom clearance for the flywheels by 1mm (don't worry, it was initially deliberately excessive), and the mounting points were moved up 2mm. Therefore, the magwell is also now slightly different, so are all motor cover designs, and even the flash hider. A new page has been created for the older cage design and can be found in a remix. Another update is that I now feel comfortable releasing a foregrip design: it mounts onto the magwell, you'll need a new print for it (a magwell compatible with the old cages can be found in the legacy cage page too). V1.2 (02/08/20): The next big-ish update as it includes a feature I've put off working on and testing since I completed the blaster: a full-length magwell. A new foregrip for that magwell comes with it, all picatinny options between one and two-stages are available. I kind of include the 'carbine' remix as part of this update, which is the main other feature. (02/11/20): Hot-fix for this update, I forgot to upload the wire run for the full-length magwell.