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Discussion Starter · #1 ·
So after following almost everything in the DMR guide that doesn't involve opening the gear box, I have yet to shim the hopup arm on my dboys SCAR.
Before I do that, I was hoping I could have a few things cleared up.

1.) Currently my hopup nub looks like this:
http://www.airsoftpost.com/images/Parts_ICS_MC_17_lg.gif This is very different from the style that Vindi suggested in the DMR post. Is there something inherently wrong with using a nub shaped like this? It definitely has enough strength to make the .3's I want to shoot sail pretty well at 320-330fps, but would it not be accurate enough?

2.) My gun has a tendency to have shots that veer left, right around the time the hopup spin begins to effect the trajectory of the bb. Now this is all well and good for when I want to get hits on those super annoying enemies who like to hide behind trees... but even so, I think I'd prefer having a gun that shoot strait. :-/ Also, this doesn't happen every shot, maybe more like 3/5 shots. This, in my limited experience leads me to suspect the hop arm not staying in the right place, yielding a less than 100% vertical back spin. I checked the arm, and it is slightly wiggly, confirming the stray shots, and with most of them veering left, I think I can assume that in addition to being a little loose, the arm is also favoring a specific side.
So with that in mind, when I go to shim the hop arm, which side should I stuff more shimming on to correct for the veering towards the left?

3.) I had an interesting thought:
Of course, I'll be shooting .3's in skirmishes, due to the increased range and accuracy. However during testing, what if I used .2's? My reasoning is that since .2's are much more apt to be effected by inconsistencies in the gun, would testing with these result in more pronounced accuracy issues,making things easier to diagnose?
 

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Discussion Starter · #2 ·
Hmmm.... I don't want to be annoying or anything, but I've got a game coming up in a day and a half, and I'd really like to get my gun working well before then. Some advice would me most appreciated. Is my question clear enough? I could try to provide some more details if it would help. Thanks :)
 

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Discussion Starter · #6 ·
Thanks for all the help guys! Now I know what to do.

As a surprising and cruel twist of fate, now that I know how to fix the gun... 2/3 body screws stripped!!! Bah! Seeing as how I don't have a dremel or screw extractor here (they're really expensive to buy in korea) I guess I'll be going off to the airsoft shop anyway. Good news though, is that in Korea the service charge is free!
 
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