daven

after another round of this (as you can see, i dont have any feeding problems) and a little rubber retainer fucking off into another dimension... i found the problem. if you had n00b assembly error, you were correct. i had failed to correctly seat the slidey thing into the skirt of the slidey nozzle which backups the confusion i had that i couldnt depress the nozzle which i was sure i'd seen that positive airsoft fellow do on the youtube. thank you all again for your help

that's pretty decent of you, thank you. i'm onto feeding issues now. they seem to get jammed the loading side of the hop up.

well.... put the battery oh... nada... ok i'll charge it.. put the fully charged battery on.... no bueno. hold the trigger... fuse pops. motherf.... so i strip it all apart... again... getting half ok at this now. still cant see any reason for it not to move, i reassembled it without the piston and spring (i'd appreciate it if someone could tell me how to release the metal tab that appears to hold the spring in) and clack clack whirring of gears... so... i dunno. anyways, i remember this guy... what he said had always stuck in my head whilst i have no idea how to judge if it needs shimming it's barely done a thousand bbs i reckon but the lube could be getting a bit sticky, so i cleaned it all up and read you need two different types of lube so i used butter and old engine oil. i've just reassembled it, pulled the trigger.... fuck me dead and bury me pregnant .. it works! i guess it was just the old sticky lube. it's probably only firing 3fps but its a start.

im just gunna close this up, thanks for those that replied, ive finally ordered a new battery,not before i took the c*** apart, a few things went PING! i thought HTF am i getting this back together and gaining a new respect for airsoft techs, that fiddly shit mah dayz. a mate told me how i was measuring it wrong, put the meter in parallel and saw the volts drop to 1.... yeah..ok... so yeah new battery on the way. cheers! (an yeah somehow i got it all back together )

the stock fuse is 15A, i'll go get another battery. cheers chaps.

dusted down the old mp5, charged battery, wont fire. just get a click. the motor spins although i can grip and hold it with my hand. the bevel gear can be moved reasonably easily with a pokey tool. fully assembled with a multi meter in series with the fuse it'll pull over 10amps. the battery reads 9.2v on an 8.4 nuprol 1.6Ah before i pull it right apart, can i rule out the battery with those figures? it's a t&m mp5 from about 2002 and afaik the gearbox has never been apart, was running fine when i last used it (a couple of years ago maybe). many thanks