Post by mj23lj on Jan 25, 2009 13:34:20 GMT -5
Tanio Koba Twist Barrel
Now, before I begin this review I would just like to say that although I am ecstatic about this barrel, I am not biased to it as I also have/had many others (DBC, EdGI, Laylax etc).
Price:
I picked the barrel up off of my local forums for a great price $35 (used once or twice), but you can get them brand new for around the $40-$50 mark (different sizes will vary in price).
The principle of the Twist Barrel:
The barrel has grooves that run down the inside of the barrel in the same fashion as a rifled barrel, but the grooves are deeper and have a different effect on the projectile. The idea is not that the BB is spun by the “twisted” grooves, but that the grooves accept a small amount of air, which travels faster than the BB as there is nothing to stop it. So when the BB’s is traveling down the barrel there is already air in front of it, around it and behind it. The main point is that the air around the BB creates a cushion, or barrier which main purpose is to prevent the BB from touching the sides of the barrel.
At the moment the main theory of how a BB travels down a barrel is that it bounces off the edges, being guided to bounce less and less as it reaches the end:
With the use of the Twist Barrel’s air cushioning around the BB, the line/path of the BB is flattened to a degree. That’s the idea anyway.
Performance of my other VSR with Laylax for comparison:
I have been using a Laylax/Promethius 6.03 403mm in my other VSR which is around 450-460fps with .2's, and I was getting 250' chest shots quite consistently with .36g’s. Altogether I have spent around $1600+ (£800+) on my other VSR.
Performance:
At the moment, this is my internal set up:
-TM VSR G-Spec
-TK Twist Barrel 403mm (with KA Silencer barrel extension)
-PDI Barrel Spacers x4
-Laylax Spring Guide
-Laylax 110sp
To be put in:
-Laylax Teflon Cylinder
-Laylax Red Piston
-Laylax Sears
-Laylax Cylinder Head
-Laylax Spring Guide
311fps with .28g’s very consistently, I had to chrono it around 15 times to get it to come off of 311fps once (it went to 314). Not yet skirmished but I’m getting chest sized groupings (with a flyer every so often) at 210’. I personally think these results are amazing considering I haven’t finished upgrading the rifle (I assume the Laylax Cylinder Head will improve accuracy a little bit more).
Thanks for lookimg,
Alex (mj23lj)
p.s. I know this is quite a basic review so if there is anything you want me to add let me know
Now, before I begin this review I would just like to say that although I am ecstatic about this barrel, I am not biased to it as I also have/had many others (DBC, EdGI, Laylax etc).
Price:
I picked the barrel up off of my local forums for a great price $35 (used once or twice), but you can get them brand new for around the $40-$50 mark (different sizes will vary in price).
The principle of the Twist Barrel:
The barrel has grooves that run down the inside of the barrel in the same fashion as a rifled barrel, but the grooves are deeper and have a different effect on the projectile. The idea is not that the BB is spun by the “twisted” grooves, but that the grooves accept a small amount of air, which travels faster than the BB as there is nothing to stop it. So when the BB’s is traveling down the barrel there is already air in front of it, around it and behind it. The main point is that the air around the BB creates a cushion, or barrier which main purpose is to prevent the BB from touching the sides of the barrel.
At the moment the main theory of how a BB travels down a barrel is that it bounces off the edges, being guided to bounce less and less as it reaches the end:
With the use of the Twist Barrel’s air cushioning around the BB, the line/path of the BB is flattened to a degree. That’s the idea anyway.
Performance of my other VSR with Laylax for comparison:
I have been using a Laylax/Promethius 6.03 403mm in my other VSR which is around 450-460fps with .2's, and I was getting 250' chest shots quite consistently with .36g’s. Altogether I have spent around $1600+ (£800+) on my other VSR.
Performance:
At the moment, this is my internal set up:
-TM VSR G-Spec
-TK Twist Barrel 403mm (with KA Silencer barrel extension)
-PDI Barrel Spacers x4
-Laylax Spring Guide
-Laylax 110sp
To be put in:
-Laylax Teflon Cylinder
-Laylax Red Piston
-Laylax Sears
-Laylax Cylinder Head
-Laylax Spring Guide
311fps with .28g’s very consistently, I had to chrono it around 15 times to get it to come off of 311fps once (it went to 314). Not yet skirmished but I’m getting chest sized groupings (with a flyer every so often) at 210’. I personally think these results are amazing considering I haven’t finished upgrading the rifle (I assume the Laylax Cylinder Head will improve accuracy a little bit more).
Thanks for lookimg,
Alex (mj23lj)
p.s. I know this is quite a basic review so if there is anything you want me to add let me know
