Tokyo Marui SGR12 HPA Polarstar F2 Conversion Kit
Description
This is a Polarstar F2 conversion kit for the Tokyo Marui SGR12. You will require three micro switches, trigger, safety, full auto. You will need to use your three OEM nozzles. You can either use the included nozzle retainer design, or your OEM retainer is also a perfect fit. These are the microswitches: https://www.aliexpress.com/item/1005004834169381.html Wiring is fairly simple, you can cut the plugs off of your solenoid wires and the Polarstar loom, and solder them directly together with your wires from the micro switches like a mad man, or you can purchase any of the universal wiring boards. Polarstar: https://ampedairsoft.com/polarstar-universal-plugboard-universal-switchboard/ Black Leaf Airsoft: https://ampedairsoft.com/blackleaf-airsoft-universal-board-for-polarstar-hpa-units/ Which one should you use? Whichever you can find in stock. Note the Black Leaf Airsoft one comes with pig tail leads to solder to your trigger and selector switches. For the Polarstar one they need to be purchased separately. This can only be made with the F2. This is because you will require a special 10mm travel nozzle (which you must order directly from Polarstar, special order, please email them). A standard nozzle is something like 8.8mm travel. No other HPA engine that I'm aware of is able to be modified to use 10mm travel. Please post a comment if you believe this to be incorrect. The triple nozzle adaptor slides all the way home on the 10mm travel nozzle till it is snug. Then use a M3 grub screw to retain it. You will need to tap the manifold with an M3 tap. I have changed the side cover retention to be tapped M3 in the gearbox shell rather than using nuts. I've also added a hole to tap for a grub screw to adjust the trigger pull, but you are better off adjusting the micro switch arm to reduce travel. Straight shot outer nubs are also available in my design collection, please try them if you are playing outdoors. You can run the macro out the back about ~80mm, then into a Y push fitting. Plug the other side of the Y, and come back forward and then down into the grip. There is a channel provided in the switch cover for the macro line to fit. You will need to make a 6mm sized hole in the lower, and the grip plate. Halfway along the spine of gearbox shell there is a small hole to tap M3. Insert an M3 grub screw to snug down against the engine to ensure it doesn't move. This was designed to printed on an SLS printer. This will give you a perfect result and should require no post processing. I would be interested to see peoples attempts to print it on FDM, I've never tried myself. If you want to sell this model, or sell prints of this model, or want to in any way make money from this model, should you make any changes you must make the STL files available freely to all without putting them behind an email, login, or any other impediment. I would be happy to include your changed file here if that is most convenient. If you like this model and appreciate the effort that went into it, please consider making a donation to your local Cats Protection Society, Society for the Prevention of Cruelty to Animals, or simply adopt a cat who would otherwise be destroyed.
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