Emit Posted November 30, 2020 Report Share Posted November 30, 2020 I just finished installing an XCORTECH XET304U mosfet, 11.1V lipo, deans connectors and 16 gauge wiring in my Cyma cm028. The rate of fire has gone up from 11 rps to 19 rps and the trigger is much more responsive so a win so far. I've been reading that some people remove their fuse to reduce the resistance in the wiring. However I wanted piece of mind and in my search for an alternative I came across polyswitches as low resistance and resettable alternative to fuses. I connected two 16V 10A polyswitches https://www.ebay.co.uk/itm/153536855033 in parallel and the gun seems to work fine however on stress testing it after about 15-20 seconds on full auto they get very hot and the rate of fire drops dramatically. Using an IR thermometer I noticed that the temperature of the polyswitches went as high as 85 degrees Celsius and I then stopped testing as I was worried I'd burn them out. The wiring, battery and mosfet remained cool throught. What worries me is the fact that they are stored alongside the battery in the plastic stock where out of sight during a game they could melt the cables, stock etc of they got too hot? Has any got experience with polyswitches? Am I worried for nothing? Can it melt plastic/cables? Any way to lessen the risk? Add a third polyswitch in parallel for example? Link to post Share on other sites
Wingmann Posted November 30, 2020 Report Share Posted November 30, 2020 Amperage can get quite high depending on the setup. Maybe that's the problem. However, I've been running guns without any fuse for years without any problems whatsoever. Link to post Share on other sites
Emit Posted December 1, 2020 Author Report Share Posted December 1, 2020 The battery is rated 2000mAh 30C so it could deliver 60A? The motor is stock. The fuses are meant to trip at 17Ah so two of them could handle 34A spikes? Could adding a third one in parallel reduce the heat? What is an 'unsafe' current to have in an AEG circuit? Link to post Share on other sites
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