PDA

View Full Version : E-MR1 chops (bad) - covering my bases


Kingfisher
05-11-2009, 04:51 AM
Guys, my E-MR1 chops something awful and I want to make sure that I've got all of my bases covered to try to alleviate the problem. This is a relatively new marker and it chops in single-shot, burst or full-auto modes. Doesn't matter. I know the hopper is problem #1 so I've got a Ricochet AK on order, which should make it better as I've tried someone elses on the gun and it feeds noticeably better, but it still runs out of ammo and or chops even in single shot mode. I've tried numerous brands of paint, all perform relatively the same in terms of chops. I'm also about to order an all metal feedneck for it, like a Trinity or Maddog. Seems like the plastic elbow has too many steps molded in it which is causing some the trouble as well.

Last but not least, I'm running C02 on a remote.

Anything else I need to knock out while I'm at it? I've got a big scenario game coming up this weekend and I'd like to get through more than one hopper without multiple chops.

Sorry for the convoluted post, it's too early on a Monday.

bigred76
05-11-2009, 05:43 AM
Welcome to the boards! It seems like you've done your research... Kudos to you! :)

So long as the remote lined tank is vertical, it should work great. Are your chops primarily in the breech/feedneck area, or the barrel?

If it's in the breech/feedneck, definitely the hopper. If it's in the barrel, that's a bad ball/barrel. Also try decreasing your ROF to ~8bps and see if that helps. If you have a gravity feed (shake 'n bake), decrease it to 4bps.

Kingfisher
05-11-2009, 06:26 AM
lol, appreciate the kudos. I'm a troubleshooter by nature, plus my real passion is firearms and handloading, so I have to screw with this kind of thing all the time.

The chops are all in the breech. None in the barrel. The barrel is a 14" J&J (not that it matters). Sadly, even in single fire mode I was able to starve the gun with the AK hopper. All I can figure is that it has to be all of the "bumps" molded into the feedneck. Since the Ricochet is already on it's way, I'll go ahead and order the feedneck in the next few minutes. Oh, and tank on the remote IS vertical. No snow. :)

bigred76
05-11-2009, 07:34 AM
The bumps in the feedneck will have a miniscule affect on the feed rate of an agitated (Ricochet, Revvy, eVLution, etc) or force-feeding (Halo, Magna, VLocity, etc) hopper. It's a good investment because they aren't made of cheap plastic, but the ridges are a moot point.

www.sundragonpb.com has MR feednecks if I recall correctly. Reputable company and an awesome owner.

slim and shady
05-11-2009, 08:36 AM
you could also look into a acs bolt, I would have sugested a little better hopper though. if your outshooting the ak already you should have went with something a little faster and probably force fed.

Kingfisher
05-11-2009, 09:18 AM
you could also look into a acs bolt, I would have sugested a little better hopper though. if your outshooting the ak already you should have went with something a little faster and probably force fed.

Good call. You're probably right, and I was about to that same conclusion myself. Unfortunately I hadn't had the chance to really give the AK a run-through on the gun before I ordered it last week. Such is the way of things. The game this weekend is semi-auto anyway, so I should be good for the weekend then I'll sell it to a friend. Anything more than burst (for me anyway) burns through more paint that I want to use. The reason I brought up the feedneck is because even with the Ricochet the balls seemed to hang up in the neck. Plus I'm worried about breaking it in play. Neck is on order, hopper is on order... now we wait. Thanks for the assistance gentlemen.

DRCeccato
05-11-2009, 06:40 PM
Check your detents... May be that the detent has been sheared and you've got a double feed.

Kingfisher
05-12-2009, 09:17 AM
Detent was perfect. I screwed it up on Sunday, but prior to that, like new... because it was new. :) I've got a 5-pack on order with the feedneck.

Kingfisher
05-14-2009, 10:35 PM
Well the hopper came in yesterday, and the feedneck and detents today. Got it all put together and hooked up the remote and as soon as I started to open the valve on the remote the quick disconnect starts hissing. Apparently the last time I disconnected it on Sunday (and I remember) there was too much pressure in the line and when I was able to finally get the hose to disconnect, when they came apart the seal blew out of the fitting. Now the QD doesn't seal. So I'll have to call around to a couple of places in town tomorrow and see who's got a 1/8" quick disconnect for a high pressure line. Does it ever end? :(

The good news is I went ahead and put the tank directly on the gun then set up a little test range in the garage shooting into a padded 5 gallon bucket. Burned through 100 rounds, most of it on 3 shot burst mode. Tat-tat-tat... every time. No problems. The only thing I did have a problem with is that occasionally the gun is still running out of paint and will de-cock. However! It didn't chop a single ball, which is a marked improvement over what it's been doing recently.

With any luck I'll find the right fitting tomorrow and get the remote repaired and good to go. I certainly hope so because the big scenario game I've been prepping for starts first thing Sat AM.

bigred76
05-14-2009, 11:48 PM
That's due to lack of back-pressure. It's fine.

Kingfisher
05-15-2009, 05:19 AM
You mean the de-cocking? Yeah, that part I understood. Now if I can just get my hands on a 1/8" QD fitting for the remote... :(

bigred76
05-15-2009, 05:56 AM
Yes, that's what I was referring to. :)

I personally wouldn't bother with the remote as it does not hinder your ability to go out and play. If it was NIB, I'd contact the company that it came from and get an RMA for it and send it back in for a replacement.

Kingfisher
05-15-2009, 06:05 AM
I could go without the remote, but I've had some trouble in the past with liquid (or nearly so) in the gun. The remote is a Spyder remote, but I bought it retail. I'll sort it out. It's not new, but it was only used once.

deano 177
05-15-2009, 06:22 AM
I think that if the marker isn't cocking when there are no balls in the chamber that the striker oring (red one) may need to be replaced. Just a thought....

Kingfisher
05-18-2009, 09:06 AM
Just wanted to follow-up. Marker appears to be behaving now. With the Trinity feedneck and Ricochet hopper on I didn't have a single chop at the game this weekend. I wasn't running burst or auto, but in the past I was chopping in single shot mode anyway. So the performance this weekend was a noted improvement. The only problem I did have, was twice (seemingly after switching out CO2) the marker was shooting very very slow. Slow enough not to register on the chronograph at the park. In both cases pulled the bolt & striker, made sure that everything was oriented properly and that the rubber o-ring/buffer wasn't hanging the spring up somehow, then reassembled. After that, on both occasions it was immediately fixed. I don't know what is happening there but I'm wondering if the rubber buffer that goes around the spring isn't hanging or binding somehow. Anyone ever run into that before?

Ace24
05-18-2009, 10:35 AM
Could be your striker o-ring in need of lube. Either that, or your stock spring is wearing in.