Enid_Puceflange Posted Tuesday at 10:04 Share Posted Tuesday at 10:04 (edited) Ok, so I upgraded the spring in my ngrs 416 a few months ago to eek out some more fps And it’s been working flawlessly until this weekend. I haven’t upgraded anything else other than the hop rubbber Running it on a Titan 7.4, it’s had probably 6k rounds through it since the spring change…. The issues seem to have started with the Ambi selector switch I noticed that the right side (as you are looking down the replica) was out of sync with the left side, so removing the motor then pistol grip allowed me to align them again, and all was well. This weekend saw that issue return, so I duly repeated that process and got on with my days play. If I was shooting semi quickly, the gun would jam, a quick flick to full auto, then back to semi would sort it. But this weekend saw that issue return, and flicking the selector did not resolve the problem, the gun did nothing. I unplugged the battery, and back in again , and still nothing. As it sits, it’s back to firing, but obviously something isn’t happy and I have upset the TM fairies that live inside! Not being a competent aeg tech, I’m wondering where I should start to look? Selector switch? Selector plate? The mechanism that cuts off power when mag is empty? The gearbox all sounds ok, and no strange noises from the motor, no excessive heat from anywhere, and the battery isn’t getting warm. I probably had put 2500 rounds through it on the weekend, and it started acting up at the end of the day Could it just be low voltage from a drained battery (7.4 v 3000 mah Titan) I checked it’s voltage on my charger when I got home and it showed 7.7v , it’s normally showing 8.4v when fully charged Where should I start? Edited Tuesday at 11:59 by Enid_Puceflange Link to comment Share on other sites More sharing options...
Anonymoose Posted Tuesday at 10:22 Share Posted Tuesday at 10:22 While i can't help with the issue, what spring did you go for and what power did it give you? Link to comment Share on other sites More sharing options...
Enid_Puceflange Posted Tuesday at 10:45 Author Share Posted Tuesday at 10:45 (edited) Fitted an Eagle six m100 When it was first installed, it was shooting at 356 on a .2 (1.18j) Its now settled down to 285 ish on a .28 at the weekend Chrono check. (1.06j) Edited Tuesday at 11:01 by Enid_Puceflange Link to comment Share on other sites More sharing options...
Anonymoose Posted Tuesday at 11:10 Share Posted Tuesday at 11:10 24 minutes ago, Enid_Puceflange said: Fitted an Eagle six m100 When it was first installed, it was shooting at 356 on a .2 (1.18j) Its now settled down to 285 ish on a .28 at the weekend Chrono check. (1.06j) Hmm, i've ordered M90+s. Maybe i should change them to 95s or 100s. 🤔 Link to comment Share on other sites More sharing options...
mightyjebus Posted Tuesday at 13:28 Share Posted Tuesday at 13:28 soooo.... 7.7v was probably enough for the NGRS to play up, It's not so much the voltage but more the current that the battery can supply. Fixing the semi-auto-back to semi issue can be solved 2 ways. 1. fit a high torque motor and this will stop it happening around 90% of the time. 2. fit a leviathan Mosfet and it will go away for good. Sounds like the ambi gears are worn and allowing them to slip and get out of alignment. I can't remember if there is a screw holding the 2 parts together but if so a bit of thread lock will stop the screw working loose and allowing enough room for the selectors to slip. The gear teeth are pot metal so will wear eventually so maybe trying to source a replacement might be a good idea as it could take a while to find one. Enid_Puceflange 1 Link to comment Share on other sites More sharing options...
Enid_Puceflange Posted Tuesday at 14:21 Author Share Posted Tuesday at 14:21 (edited) 54 minutes ago, mightyjebus said: soooo.... 7.7v was probably enough for the NGRS to play up, It's not so much the voltage but more the current that the battery can supply. Fixing the semi-auto-back to semi issue can be solved 2 ways. 1. fit a high torque motor and this will stop it happening around 90% of the time. 2. fit a leviathan Mosfet and it will go away for good. Sounds like the ambi gears are worn and allowing them to slip and get out of alignment. I can't remember if there is a screw holding the 2 parts together but if so a bit of thread lock will stop the screw working loose and allowing enough room for the selectors to slip. The gear teeth are pot metal so will wear eventually so maybe trying to source a replacement might be a good idea as it could take a while to find one. Thanks for that I’ll probably take it apart next week and have a look at things 🫣 Do you recon using a standard 7.4 LiPo and not the Titan would help matters? Edited Tuesday at 14:24 by Enid_Puceflange Link to comment Share on other sites More sharing options...
mightyjebus Posted Tuesday at 14:35 Share Posted Tuesday at 14:35 I don't think it matters too much which battery, just that it has enough juice for it to turn over the AEG. Titans are normally pretty good but I've seen a few go wrong in the past. Most 7.4v LIPO's usually show around 8v fully charged so not much difference. Enid_Puceflange 1 Link to comment Share on other sites More sharing options...
ak2m4 Posted Wednesday at 12:00 Share Posted Wednesday at 12:00 @Enid_Puceflange not sure if you've fixed or not but if you can post the problem on the FB ngrs and Graeme from Tactical Geordies will help you out Enid_Puceflange 1 Link to comment Share on other sites More sharing options...
Enid_Puceflange Posted Wednesday at 14:20 Author Share Posted Wednesday at 14:20 Not had time to look at it yet but thanks for the suggestion and will do 👍 Link to comment Share on other sites More sharing options...
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