Doctor Chinnery Posted December 28, 2020 Share Posted December 28, 2020 I have an EFlite Park400 outrunner which I think has swallowed a small foreign body (nut/bolt/washer?) which seems to keep getting stuck between the magnets etc. - i.e. it can be turned over by hand, then jams, so - I need to disassemble the motor to extract the offending item. Now the problem - the two tiny grub screws that hold the rota onto the drive shaft, I can't for the life of me find a Hex Key to fit these grub screws ( I think all my Hex Keys are metric ). Does anyone know what Hex Keys are used in the U.S. that are likely to be used by EFlite? And - what can I use to soften/dissolve the thread lock every outrunner manufacturer anoints their product with just prior to dispatch? Oh, and I've tried contacting Eflite a couple of times - not digital sausage! Edited By Doctor Chinnery on 28/12/2020 22:43:04 Quote Link to comment Share on other sites More sharing options...
Martin Harris - Moderator Posted December 28, 2020 Share Posted December 28, 2020 Is a 1.5 mm a loose fit or will it not go in? Commonly available small imperial sizes are 0.05" and 1/16" - 1.27mm and 1.5875mm Heat is the best disassembler - can you get the tip of a small soldering iron onto the screw? TBH, I've never found it necessary. Look out for a second screw on some motors and be prepared for an interference fit between the shaft and the magnet bell - you will need to press (preferable to hitting) the shaft out. Edited By Martin Harris - Moderator on 28/12/2020 23:04:32 Quote Link to comment Share on other sites More sharing options...
BackinBlack Posted December 28, 2020 Share Posted December 28, 2020 On most motors you only need to remove the circlip on the shaft in front of the stator housing, then the shaft and rotor should slide out of the stator. Watch your fingers, the rotor will want to snap back over the stator pinching the end of your finger. Ask me how I know... Ian Quote Link to comment Share on other sites More sharing options...
Martin Harris - Moderator Posted December 28, 2020 Share Posted December 28, 2020 If you go with BiB's (good) suggestion, put it in a clear plastic bag to remove/replace the circlip, unless you enjoy grovelling on your hands and knees for extended periods! Edited By Martin Harris - Moderator on 28/12/2020 23:02:44 Quote Link to comment Share on other sites More sharing options...
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