Sure, let's take this to the lounge as it may involve more drunken philosophy than actual science..or maybe not. In any case, more good ideas are borne from sketches on a beer stained napkin than any clean boardroom. :shot:
So, let's address this r hop business, shall we? First of all, yes, I am a disciple of the r hop. I've studied it extensively for years now and employ nothing else in my rifles. Yes, I make my own. Yes, I use alternative materials bought in bulk, yes, I change the shape of the barrel window, yes, yes, yes, and yes...all of the above. I've r hopped everything from pistols to bolt guns now. Eventually, if it's at my house, it gets the r hop. Why? BECAUSE IT WORKS.
Now, alot of folks are seeking the Grail. A quick factory made r hop that comes in a baggie, installs in five minutes, and requires no real adjustment other than the hop arm. Forget it. Not going to happen, ever. I tore into my Thompson last night (again), yes, even that gets hot rodded. But here's the deal...I changed the shape of the barrel window. I'm using a 6.02mm stainless Deep Fire that's been buffed into the next dimension and the silicone tubing is really, really supple. Why do this? Because I can.
So here's the rub...it's not just an r hop. It's changing the behaviour of the barrel, the nub design, the angle of the nub as it hits the hop patch, etc, etc,etc.. it becomes more of a hop up system than merely an r hop patch.
When I see someone not get amazing results from an r hop, I know immediately it wasn't done right. How do I know? Because if you do it correctly the gun really, really, really goes! I had a Maple Leaf in the Thompson until now. I needed the gun to work but didn't really have time to fool with it. Now that the daylight is getting shorter and the temps are falling, I have some bench time. For example, last night all I did was cut the patch, install it and shape it along with getting the ideal window dimension and angle, and install the bucking. That was three hours. That's meticulously making sure the alignment of the patch is perfect. That the BB is centering in the barrel both with no hop on, and with the hop applied (I have a jig for doing this). I also have a giant magnifying glass that lights up to check for perfect adhesion to the barrel edges as well as making sure all transitional surfaces are perfectly smooth. Then I run a 6mm plug gauge down it to check for protrusions, etc. It has to be PERFECT...and I mean PERFECT.:tup:
Tonight I'll be fitting the barrel into the hop unit (maybe if time permits). Again, checking alignment, pressure, etc. That will be a whole evening. Then we'll fit the nub and arm another night...point is, it takes a LONG time to get this just right to the point of ridiculous performance. It takes precision, and a pile of patience, and NO, it is NOT cost effective and there's no way of doing it commercially or cheaply to ensure a decent profit and still make it affordable. This is building a Bugatti...
So why waste all this time? Why not? :shrug: Getting an ususpecting piece (like a plastico King Arms M1A1) to shoot the begeezez out of most commercially modified bolt guns is a real rush. It doesn't take a lot of horsepower either...it just takes maximum efficiency of the air provided by the gearbox. The gun shoots 385fps. That's plenty...you just need to harness all of it.
In our case we're not looking to change the world, build an empire like Nov, or even get on YouTube...it's just about building a little awesomeness...and the r hop IS the way to go, no doubt about it...but you have to do it absolutely right.
So, let's address this r hop business, shall we? First of all, yes, I am a disciple of the r hop. I've studied it extensively for years now and employ nothing else in my rifles. Yes, I make my own. Yes, I use alternative materials bought in bulk, yes, I change the shape of the barrel window, yes, yes, yes, and yes...all of the above. I've r hopped everything from pistols to bolt guns now. Eventually, if it's at my house, it gets the r hop. Why? BECAUSE IT WORKS.
Now, alot of folks are seeking the Grail. A quick factory made r hop that comes in a baggie, installs in five minutes, and requires no real adjustment other than the hop arm. Forget it. Not going to happen, ever. I tore into my Thompson last night (again), yes, even that gets hot rodded. But here's the deal...I changed the shape of the barrel window. I'm using a 6.02mm stainless Deep Fire that's been buffed into the next dimension and the silicone tubing is really, really supple. Why do this? Because I can.
So here's the rub...it's not just an r hop. It's changing the behaviour of the barrel, the nub design, the angle of the nub as it hits the hop patch, etc, etc,etc.. it becomes more of a hop up system than merely an r hop patch.
When I see someone not get amazing results from an r hop, I know immediately it wasn't done right. How do I know? Because if you do it correctly the gun really, really, really goes! I had a Maple Leaf in the Thompson until now. I needed the gun to work but didn't really have time to fool with it. Now that the daylight is getting shorter and the temps are falling, I have some bench time. For example, last night all I did was cut the patch, install it and shape it along with getting the ideal window dimension and angle, and install the bucking. That was three hours. That's meticulously making sure the alignment of the patch is perfect. That the BB is centering in the barrel both with no hop on, and with the hop applied (I have a jig for doing this). I also have a giant magnifying glass that lights up to check for perfect adhesion to the barrel edges as well as making sure all transitional surfaces are perfectly smooth. Then I run a 6mm plug gauge down it to check for protrusions, etc. It has to be PERFECT...and I mean PERFECT.:tup:
Tonight I'll be fitting the barrel into the hop unit (maybe if time permits). Again, checking alignment, pressure, etc. That will be a whole evening. Then we'll fit the nub and arm another night...point is, it takes a LONG time to get this just right to the point of ridiculous performance. It takes precision, and a pile of patience, and NO, it is NOT cost effective and there's no way of doing it commercially or cheaply to ensure a decent profit and still make it affordable. This is building a Bugatti...
So why waste all this time? Why not? :shrug: Getting an ususpecting piece (like a plastico King Arms M1A1) to shoot the begeezez out of most commercially modified bolt guns is a real rush. It doesn't take a lot of horsepower either...it just takes maximum efficiency of the air provided by the gearbox. The gun shoots 385fps. That's plenty...you just need to harness all of it.
In our case we're not looking to change the world, build an empire like Nov, or even get on YouTube...it's just about building a little awesomeness...and the r hop IS the way to go, no doubt about it...but you have to do it absolutely right.