sniperguy25 Posted February 26, 2008 Report Share Posted February 26, 2008 hey everyone! i just bought an echo 1 mp5 pdw/k. i was just wondering if anyone knows what other upgrades i need to put the s120 spring in so that it shoots somewhere around 400 fps and is reliable. if anyone has any ideas, i'd apprechate it if you'd let me know. Thanks!!! Link to post Share on other sites
Sturaiku Posted February 26, 2008 Report Share Posted February 26, 2008 Sorry, forum rules state we can't talk about upgrading the gun's FPS over UK limits. However, the galaxy MP5k has metal bushings, a decent piston and motor. The thing can take any "upgrade" that's thrown at it. Link to post Share on other sites
Silent_Assassin Posted February 26, 2008 Report Share Posted February 26, 2008 Sorry, forum rules state we can't talk about upgrading the gun's FPS over UK limits. We can now, rules been revoked. Basicly any spring over a 120 will give you 400+ and you might want to re-shim the gear box while you've got it open to make sure the gears mesh properly. I'll write a more detailed upgrade list for you later when I'm home from work Link to post Share on other sites
sniperguy25 Posted February 26, 2008 Author Report Share Posted February 26, 2008 However, the galaxy MP5k has metal bushings, a decent piston and motor. The thing can take any "upgrade" that's thrown at it. thanks bud. i apprechate that. Link to post Share on other sites
sniperguy25 Posted February 26, 2008 Author Report Share Posted February 26, 2008 We can now, rules been revoked. Basicly any spring over a 120 will give you 400+ and you might want to re-shim the gear box while you've got it open to make sure the gears mesh properly. I'll write a more detailed upgrade list for you later when I'm home from work i put an m120 spring in my echo m16, and it broke the gear box into about 3 pieces. thats why i'm worried about putting a 120 spring in the mp5. thanks for your help. Link to post Share on other sites
sniperguy25 Posted February 26, 2008 Author Report Share Posted February 26, 2008 Sorry, forum rules state we can't talk about upgrading the gun's FPS over UK limits. However, the galaxy MP5k has metal bushings, a decent piston and motor. The thing can take any "upgrade" that's thrown at it. i forgot to mention that i also order a 9.6 volt battery for it, is there any reason why the gun shouldnt be able to handle that? Link to post Share on other sites
chownsy Posted February 26, 2008 Report Share Posted February 26, 2008 i forgot to mention that i also order a 9.6 volt battery for it, is there any reason why the gun shouldnt be able to handle that? the sub machine gun should be able to cope with 9.6v. if it fits in the battery space all ok. the motor may burn out quicker than on 8.4v but ur looking at a few 10000 rounds down the line and other things may of gone before the motor does. (quick note try using the edit button instead of multiple posts and to quote more than one person, click quote next to the ones u want to quote and click the add reply at the bottom) Link to post Share on other sites
sniperguy25 Posted February 27, 2008 Author Report Share Posted February 27, 2008 thanks for the advice, if you were in my position. would you run the 9.6 or the 8.4? Thanks! Link to post Share on other sites
zentaurus Posted February 27, 2008 Report Share Posted February 27, 2008 9.6v will definitely give you better ROF and trigger response. and you have to chop off part of the charging handle tube to make a 9.6v stick fit. zT Link to post Share on other sites
AirsoftHawaii90 Posted February 27, 2008 Report Share Posted February 27, 2008 Ok, A new motor will be a must. My Galaxy needed a new motor stocked, The motor they come with suck in general.. Link to post Share on other sites
sniperguy25 Posted February 27, 2008 Author Report Share Posted February 27, 2008 thanks for the info guys, i.ve been looking on google, trying to find a video on how to cut the charging handle, but cant seem to find anything. any idea? Link to post Share on other sites
Catman Posted February 27, 2008 Report Share Posted February 27, 2008 I can't remember exactly what I did to get my 9.6v to fit now, i think I just removed the cocking handle from the tube and cut it down until the battery would fit. Though I suggest you get a can of black krylon paint and give the battery a spray to disguise the battery in the gun, it looks a bit silly otherwise As for upgrading to 400fps, whatever you do make sure you have solid metal bearings in there Link to post Share on other sites
Silent_Assassin Posted February 27, 2008 Report Share Posted February 27, 2008 As for upgrading to 400fps, whatever you do make sure you have solid metal bushings in there Fixed. Bearings (the ones with the little balls) are best for high ROF on sub 350 setups, where as bushings as best for high ROF on 400+ setips as they're stronger (I think ) I'm sure Catman will rip me a new one if I'm wrong Link to post Share on other sites
sniperguy25 Posted February 27, 2008 Author Report Share Posted February 27, 2008 thanks for the battery info. so are you telling me, that if i want to put a 120 spring in the gun, the only other upgrade i will need is bushings? Link to post Share on other sites
Silent_Assassin Posted February 27, 2008 Report Share Posted February 27, 2008 Well if it was my MP5k and I wanted to get 400fps reliably then I would fit... Systema M120 spring Element 6mm bushings (not bearings ) Guarder bearing spring guide Guarder bearing piston head Systema Magnum motor (short shaft) Plus a re-shim. Link to post Share on other sites
Catman Posted February 27, 2008 Report Share Posted February 27, 2008 hehe cheers, I meant type bushings Yeah, don't use the ones with the bearings inside they're not ideal for high FPS. If they break the little ball bearings go everywhere, I took a friend's gun apart that this had happened to once, he'd replaced the bushings but not thoroughly checked the gearbox for debris, I found one of the ball bearings stuck between two teeth of the spur gear, it was so wedged in there that it took a hammer and screwdriver to get it out On the sector gear every 3 (or so) tooth there was a dent it had made, amazingly it hadn't caused any teeth to break. Link to post Share on other sites
sniperguy25 Posted February 27, 2008 Author Report Share Posted February 27, 2008 ok sweet thanks a lot! thats what i was looking for. Link to post Share on other sites
AirsoftHawaii90 Posted February 27, 2008 Report Share Posted February 27, 2008 thanks for the info guys, i.ve been looking on google, trying to find a video on how to cut the charging handle, but cant seem to find anything. any idea? Well, I have a review here somewere on the forums, But heres my video- I hope this helps. Link to post Share on other sites
zentaurus Posted February 28, 2008 Report Share Posted February 28, 2008 as Catman said, you can just remove the charging handle and the tube that it attaches to. should you want to retain the handle for the looks, then you could chop off the part that goes beyond the charging handle itself. it will be tight but a 9.6v stick will fit. Link to post Share on other sites
sniperguy25 Posted February 29, 2008 Author Report Share Posted February 29, 2008 hey thanks for the video! it was perfect. i got the battery in and everything fits perfect. thanks guys! Link to post Share on other sites
maxxxmonster Posted March 3, 2008 Report Share Posted March 3, 2008 the m4 has a v2 gb which is sorta weak in the front part where the cylinder and cylinder head go. the v3 gearbox in the mp5pdw is much stronger so you dont need to worry about it breaking for a while Link to post Share on other sites
Maekl Posted March 7, 2008 Report Share Posted March 7, 2008 the m4 has a v2 gb which is sorta weak in the front part where the cylinder and cylinder head go. the v3 gearbox in the mp5pdw is much stronger so you dont need to worry about it breaking for a while I know one who had 5 version3 gearboxes broken with m80-m120 springs. So, if you have bad luck its as weak as version2 but if lucky it can tolerate up to m140. Link to post Share on other sites
zentaurus Posted March 10, 2008 Report Share Posted March 10, 2008 true, but what maxxx is probly saying is that the v2 mek is widely known to have an inherently weaker design. Link to post Share on other sites
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