EDgun R5M Long .25

Jump to latest Follow Reply
JWilson

JWilson

Member
Oct 18, 2015
885
49
Lebanon, TN, United States
It took a bit for me to optimize my tune and rifle set-up. Thanks to the group here and the feedback from Brian I can say I am simply amazed by this rifle. It is set up for 887 fps average with the 34s. It gives over 50 usable shots and a spread of 13 fps from 245 Bar down to 123 Bar. I know there is still some room for efficiency tuning as I see it consumes more air at the higher fill pressure. It is shooting so well I don’t want to mess with it though. This one is fitted with the Huma reg and plenum. I find that in my set-up any more speed on this pellet results in groups opening up under less that perfect conditions. Speaking of groups... this thing blows me away. It is pretty much pellet on pellet at zero range of 50 yards. The best I have done at 100 was right at .84. My reactive 2” target at 125 is tons of fun. The reason I say the gun provides 50 “usable” shots on a fill is I recently struck the 2” spinner 50 consecutive shots. Not one miss in the string. After several consecutive hits who wouldn’t keep going to find out right?

I am not sure how much energy the rifle is actually capable of but I have shot the 34s at 945 during tuning sessions. I’d love to hear if anyone has tuned for a heavier projectile with success.

32 inches of pure enjoyment right there... 

1533388590_13278525295b65a72e7fbcd5.71166958_7D533B34-B738-4BF6-A465-1D39872BB020.jpeg

 
I forgot to mention that my neighbors have told me they do not hear the rifle. They do hear my reactive targets though. They have no complaints.

Some of you may have seen where I posted about loosely packing half of the stripper vent/shroud with acoustic wool. I felt the vent is huge and begging to be used more efficiently. This is clearly reversible yet quite effective on this rifle.
 
Upvote 0
Sounds like you have things fairly well sorted ?. My R5M will hopefully start behaving, I found that the air cylinder was not seated properly and that was possibly part of my accuracy issues (erratic). I also got 10 tins of the 34gr from Brian to sit down with, hopefully on Monday. I haven't forgotten the idea we discussed and I might do a little machine work today. 

A precaution I would share with anyone that has the air cylinder out, THE WEDGE SCREW IS FRAGILE! By the nature of the way the shallow headed screw had the Allen screw form swaged, it leaves a very thin wall that will fail if tightened too firmly. Mine separated and when I realized that a replacement wasn't to be found quickly, I re-engineered it. I used a conventional button head Allen screw that I machined part of the head thinner, but I didn't make it as thin as original. That required me to mill away a portion of the wedge area that is unused to allow it to fit in the space allowed. Works great and should never fail. I spoke with Brian about these screws and he will make sure to have some available, if they are needed in the future. (for those who don't have machine equipment). 

As these get into the mainstream, the information you have shared will be greatly valued and thanks for your willingness to let others know.



Mark
 
Upvote 0
at 945 fps shooting 34's...thats 67.4 fpe...thats smokin
Click to expand...

Totally agree. The Huma and plenum make this platform capable of some big #s. That’s why I asked if folks had tuned to heavier projectiles. To be honest, I am not so sure the platform won’t make even more energy. I didn’t try as the JSB pellets from my barrel don’t do well over 60 fpe.
 
Upvote 0
A precaution I would share with anyone that has the air cylinder out, THE WEDGE SCREW IS FRAGILE! By the nature of the way the shallow headed screw had the Allen screw form swaged, it leaves a very thin wall that will fail if tightened too firmly. Mine separated and when I realized that a replacement wasn't to be found quickly, I re-engineered it. I used a conventional button head Allen screw that I machined part of the head thinner, but I didn't make it as thin as original. That required me to mill away a portion of the wedge area that is unused to allow it to fit in the space allowed. Works great and should never fail. I spoke with Brian about these screws and he will make sure to have some available, if they are needed in the future. (for those who don't have machine equipment).
Click to expand...



I also had some concerns about the wedge screw right after receiving the rifle... besides the thin wall between the hex and the flange, the hex portion is shallow and even using a good hardened bit from Mountz I don't like how it feels and you can tell it's starting to round after several disassembly/reassembly cycles to install and tune the Huma regulator and power plenum. I snug the screw but don't crank down on it hard. Right after receiving my R5M I asked Brian to order me 2 spare wedge block screws; he ordered several screws and several complete wedges. Hopefully they'll be in stock soon, I want to have a couple of spares on hand.



I agree that taking a bit off the wedge block and going thicker on the screw head is a better approach, I may do the same on my rifle once I get a spare from Brian to modify. I may replace the 4mm hex wedge screw with a Torx head screw that will be less prone to rounding.



For those of you cranking up your R5M, keep an eye on the cocking handles and locking mechanism. Mine was popping open and partially blowing open the bolt at 915fps with 34s, I had to add a secondary spring to the latch to keep it latched and the bolt closed during firing. No more partial bolt blowback after adding the secondary spring.



The R5M is still the simplest and easiest air rifle I've ever worked on. Ed really has a good eye and a great design approach that not only minimizes working parts and components but makes the rifle extremely easy to service and work on.
 
Upvote 0
You must log in or register to reply here.
Top Bottom
Back
Home
Forums
Resources
Menu