Topic: downgrading echo 1 scar spring (Read 1256 times)

ctres94 · « **on:** March 11, 2009, 07:04:18 PM »

I am helping a friend of mine decide what upgrades to get for his echo 1 scar, and from what I've heard, it shoots about 430 fps, which is definitely to fast for the field we will be playing at. the gun has not been chronoed yet, and it would be helpful if someone could verify this. he is planning on adding a prometheus tightbore, and a downgraded spring, and need the velocity below 420 fps. he'd like the most power without going over 420. I was thinking of either getting the guarder 110 or 120, or the echo 1/modify 110 or 120 off of airsoft gi along with a prometheus barrel and firefly bucking. I just don't know whether the 120 and tightbore would put it over 420. Any help here would be aprciated.

aznriptide859 · « **Reply #1 on:** March 11, 2009, 07:06:14 PM »

Err a E1 SCAR (am pretty sure) does not shoot 430fps, more like the high 300's.

ctres94 · « **Reply #2 on:** March 11, 2009, 07:11:42 PM »

ok, thanks, but it came from asgi with a sheet saying it was chronoed at 430, but I wasn't to sure about that anyway. but, just to be sure, does anyone else have one that has been chronoed stock?

kalashnikov1 · « **Reply #3 on:** March 11, 2009, 07:26:01 PM »

If its brand new it'll settle to below 420 fps. Try leaving your spring compressed for a few days as well.

ctres94 · « **Reply #4 on:** March 11, 2009, 07:33:44 PM »

thankyou, but a tightbore also increases velocity, and when combined with the stock spring, will i need to downgrade the spring to a 120 or 110 to stay below 420 fps?

aznriptide859 · « **Reply #5 on:** March 11, 2009, 07:34:22 PM »

Not really - the FPS gain in most guns is nominal or almost none.

ctres94 · « **Reply #6 on:** March 11, 2009, 07:37:02 PM »

so a tightbore plus the stock spring will still keep it below 420?

sidriddle · « **Reply #7 on:** March 11, 2009, 08:04:02 PM »

Just buy the new spring if do you know how to take apart a gearbox and want a garuntee of less than420 fps. Don't compress the spring because it will fluctuate like crazy and sometimes you may shoot 360 and sometimes like 390, and it would just be better performance wise if you bought a new spring( which seems pretty affordable considering that your going with Prometheus tb and firefly)

kalashnikov1 · « **Reply #8 on:** March 11, 2009, 08:16:10 PM »

Yeah the first upgrade you should get is a new bucking. The Echo 1's come with a tightbore stock I think...

unknown050689 · « **Reply #9 on:** March 12, 2009, 12:45:54 AM »

the echo1 scar comes with a stock m130 spring which puts it at around 430fps (Ive shot and chroned it myself). If you want around 400 get a guarder m110 spring a tightbore barrel and a systema or firefly bucking. And PS. echo 1's dont come with a stock tightbore, it would be really nice but they dont haha.

kalashnikov1 · « **Reply #10 on:** March 12, 2009, 09:14:23 AM »

OK, I know that some of the new clones do but I wasn't too sure about Echo 1.
But before buying any new parts try leaving spring compressed for a couple days, it should lower the fps. And if it shoots 430 right out of the box it will settle to a bit lower than that after maybe a couple thousand rounds.

unknown050689 · « **Reply #11 on:** March 12, 2009, 10:17:42 AM »

Well thats 430 BEFORE a tightbore barrel and a new bucking. If you add those in its gonna be right back up at 430 again if not more plus its bad for your gearbox to leave it compressed. Honestly i would just throw in the 110 spring in there. Basicaly every gun out there needs a new relubing job and echo 1 is no different. A new relubing job would increase your ROF (not a whole lot but it does) and a reshimming job will increase the life of your gears and on top of that the m110 spring will drastically increase the life of your entire gearbox. I would use this situation to revamp your gearbox, change out any unnecessary or bad parts and just make sure its perfect.

ctres94 · « **Reply #12 on:** March 12, 2009, 04:12:20 PM »

Thank you everyone for the help, just two more questions (hopefully) first, does anyone know anything about the pdi springs, because asgi says that the 170% pdi spring will get about 370-380 fps, which, when combined with a tightbore, should end up getting just under 420, right? and also, I saw the review for the d boys scar, and it dosen't have metal bushings, I was wondering whether this is true for the echo 1 as well. If they do need to be replaced with metal ones, which brand I buy?

kalashnikov1 · « **Reply #13 on:** March 12, 2009, 04:52:14 PM »

PDI makes high quality springs that put a little bit less stress on your gearbox than other companies' springs do. The PDI 170% will put you at like 420 fps. If its a 3rd generation Echo 1 it will have metal bushings. A PDI 150% spring will put you right at 400. You should probably get one of those just to be safe if you are going to buy a tightbore barrel.

ctres94 · « **Reply #14 on:** March 12, 2009, 07:41:36 PM »

sorry, but most places that I am reading say that a pdi 170 should get about 380-400. does anyone else here have an experience with either a pdi 150% or 170% ?

kalashnikov1 · « **Reply #15 on:** March 12, 2009, 08:29:08 PM »

Dude trust me the 170% will put you at 420. There are numerous spring charts out there that you can look at as proof. The PDI 150% pared with good compression and a tightbore will put you right at 400 with consistant fps.

ctres94 · « **Reply #16 on:** March 18, 2009, 07:21:59 PM »

thankyou for the help. I also noticed the guarder 110 spring, getting around the same fps on a spring chart, which would you reccomend? also, I was thinking of getting a 509mm edgi 6.01 barrel, instead of the prometheus. If I were to get the edgi barrel pared with a firefly bucking and the new spring, what kind of accuracy, velocity,and range should I be getting?

kalashnikov1 · « **Reply #17 on:** March 18, 2009, 08:40:13 PM »

Stick with the PDI, it will put a little bit less stress on your gearbox. I would recommend you don't get a 6.01 unless you are ready to be constantly cleaning your barrel and using the highest quality bb's. The 6.01 won't make THAT much more of a difference than a Prometheus 6.03. But you should getting at least 200 feet of range with the upgrades.

ctres94 · « **Reply #18 on:** March 19, 2009, 03:10:11 PM »

thanks for the advice, since I take care of my things well, I would probably pick the 6.01 barrel, but as I am helping a friend, I'll let him make the call.

kalashnikov1 · « **Reply #19 on:** March 19, 2009, 05:28:56 PM »

Quote from: ctres94 on March 19, 2009, 03:10:11 PM

thanks for the advice, since I take care of my things well, I would probably pick the 6.01 barrel, but as I am helping a friend, I'll let him make the call.

No problem.

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Author Topic: downgrading echo 1 scar spring (Read 1256 times)