[vindicareassassin]

Sadly your going to struggle to get a descent length nub into a G36 hop mate.

I tryed it on my SL36 hybrid by slipping a piece of plastic into an elongated hop window,sat on the outside of a nubless rubber, before fitting the barrel into the chamber..... if that makes any sense to you?? It was about 6mm long and the width of the hop chamber window.

The results were pretty random too, as the plastic kept on moving about in the window so I gave up on it as a bad job.

You could just glue a piece of card to the nub holder but that will only give you an extention of about 1.5mm either side of the norm at an absalute max, so you myt see an improvement, but nothing compared to what Ive gained from my AUG hop with a 10mm long nub.

As I said elsewhere this is again under review for V3 of the mod, I'll then be turning my attention on to the M4/16 hop unit for my next DMR project, hopefully to get an even longer nub, eleminate the side gears and have a more stable hop than the madbull version

 

[vindicareassassin]

I tryed an LRB in conjunction with my elongated hop in my G&G M14.

The results were good, lots of range etc but I found 2 problems with it

1/ The flight path is odd, it not your traditional gentle lob or gentle curve down which are easy to allow for at variable contact distances, it infact goes down, then flattens out, then towards the end of its flight it goes up in the air then drops like a stone, quite difficult to predict in the heat of combat alright if all you do is shoot paper targets in your back garden :-/.

2/ when trying to compinsate for the above you end up shooting the floor about 20 foot infront of you a hell of alot when your prone, annoying when your using a semi, damn near fuse popping when using a BA :-/

Its ideal if your a full auto queen, and what it was originaly used for in classic airsoft weapons, cuz it allows you to get more range from heavier ammo using lower fps, but I've reverted back to a straight barrel and hop mod as its more predictable.

It may well of been because I was using it along with my long hop mod that I was getting the results I did, so if anyone was going to try an LRB I'd advise doing it before you try any long hop stuff

 

[vindicareassassin]

Re inspired by this thread I had another go at it yesterday as part of my V3 long nub mod.

Results were much better, I set the hop to a gentle lob to gain maximum range, then screwed down the LRB adjuster 1/4 turn at a time, what I noticed in the flight pattern was it lowered the peak of the lob into a flatter flight path and lengthened the flight distance

Please bare in mind this is all done on a rifle firing 330fps using G&G .28s

I believe the problem I had last time was that I wasn't using heavy enough ammo as that is really the main point of using an LRB, as used alone and using the same, light weight, ammo the flight pattern I was getting is the one I should of realised I would get :-/.

It only occured to me yesterday that this might be the reason so instead of tuning the ammo to a fixed barrel curve I decided to tune the barrel curve to the ammo I want to use

I still have more testing to do so expect more soon

 

[vindicareassassin]

Its on my G&G M14 EBR, the one I built before even G&G did

This chassis is unique in that it has a barrel mounting block half way along the outer barrel. This holds the back half completely flat and rigid both horizontaly and verticaly. I then fitted a screw to the very front of the chassis directly above the barrel, this is how I adjust the amount of curve in the barrel. It only allows for about 4mm of adjustment, but as I'm only using .28s it seems to be enough..... I could do some grinding and get more of a curve so I can use maybe .36s but that will come after I've done some play testing and finished my M16 SPR/DMR project.

I have seen a couple of LRBs fitted to BA rifles, and they used set screws half way along the barrel pushing the middle up, one even made a special cradle to hold 2 set screws at 45 degrees to the horizontal to be able to tune the left and right of the bb flight aswell

..... must be an absalute bitch to set up :-/.

Me personally don't like the idea as to my mind the bb should have a 'flow' down the barrel, it just doesn't sit right with me that sticking a corner in the middle of the barrel for the bb to crash into could do the same thing :-/

I might be wrong and the guys doing it seemed happy with the results, without trying it myself I cant say..... I just bought a 2nd hand VSR Gspec, might be time for some creativity

 

[vindicareassassin]

See that is what the LRB was originaly produced for, to provide enough lift for realy heavy bbs from extremely low powered rifles thereby making them inherentle more accurate, even if the bb did take an age to get to where its going .

If your running over 500 fps I dowt you'd see much improvement as you should be using .4 and above bbs in any case apart from alittle more range.

Where you will realy notice a difference is when your using sub 350 fps rifles and want to use .28s and over.

What you will find with all rifles is that you will require less 'normal' hop, this in turn will increase your fps as its not being wasted trying to push the bb through the hop.

What I will say to anyone thinking of trying this is try to make your system adjustable as it will then be easier to tune your barrel to your prefered ammo rather than try and find a bb weight that will work with a fixed curve.

 

[vindicareassassin]

To reply to your bump.....

Might be worth trying to shim a downward curve to make 'sort'of' an LRBish effect to help with the range issue.

Give the barrel a polish and see what you get from that before going any further with hop mods

I did think about trying to bend the craddle on my SL36c to try to increase the LRB effect but dumped the idea as it wasn't adjustable and had a suspition that the monkey metal its made from would probably crack rather than bend nicely......

I also toyed with the idea of making a longer barrel window, fitting a nubless rubber, sealed ofcoarse, then making some patches to fit over the hole in differing thickness' with the chamber holding it in place, sort of like a fixed hop, but also dumped tis idea as adjusting it would of been a nightmare as it would require a full strip down everytime you needed to make any sort of adjustment, but as I'm working on a couple of VSR project currently I'm playing with this idea again.....

Just some food for thought

 

[vindicareassassin]

Woogie is sort of right, the off-set 'step' is infact what is used to induce the back spin on the bb to raise it to the top of the barrel, a bit like our 'normal' nub style hops.

Most modern day users of the LRB just set their normal hop so that it adds a little flick to the bb to produce the same effect.

With my experiments with the long hop nub combined with the LRB I found you don't need as drastic a curve in the barrel to achieve similar effects.

As I explained above I simply set the long hop to give best flight then added LRB effect to increas range, but not so much as to make the flight follow a strange path.

I'm not familiar with the hop half way down the barrel your describing, but at the time I was doing my research I was in the 'LRB zone' so didn't look at much else

It sounds interesting though and might be worth persuing if a suitable weapon and system could be built. I'll have a think on it and see if I can come up with some theories..... Do you have a link to the article you were looking at please chap?