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Do I have to dry-fire my AEG during motor height adjustment?

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Old January 31st, 2013, 15:18   #1
NS-Airsoft-Noob
 
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Do I have to dry-fire my AEG during motor height adjustment?

I ordered a new pistol grip (a black Magpul PTS MOE grip) to replace the original pistol grip on my CA M15A4 Sportline Rifle. Now my question is, after I install my new pistol grip, do I have to dry-fire the gun while I'm adjusting the motor height?

All the videos I've watched on YouTube in regards to motor height adjustment have the AEG unloaded and dry-fired during the adjustment of the motor, which I totally understand why. However, I'm concerned that the number of times I'd have to dry-fire my gun like that would be bad for my mechbox.

Is it okay to dry-fire the AEG for motor height adjustment, or can I have it loaded with BBs and adjust the motor height in my basement airsoft range, with the muzzle pointed towards a target downrange and away from me?
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Old January 31st, 2013, 15:26   #2
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You're going to be fine with the amount of dry firing needed to set the motor.

Of course wear eye protection.

Before you put the end plate on push the motor up with your thumb and test the height. Then put the plate on and adjust till you get the same sound. Doing it with your thumb first will save you time/dry firing.
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Old January 31st, 2013, 15:26   #3
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Dry firing a little should not damage the weapon, as the change in pressure is not significant enough (but exists). However, you should not dry fire A LOT, just like you would not fire the gun loaded A LOT at once.

Dry firing all the time may shorten the life of the rifle, but doing it a little is not harmful, in a way that firing with or without a bb uses the component, so it's not the dry firing itself that will kill your gun.

I hope I'm clear (and not mistaken).
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Old January 31st, 2013, 15:46   #4
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Its the lack of pressure in the barrel that the bb creates that leads to cracked gearboxes (especially on version 2 boxes) the pressure created by the bb slows down the piston causing it to impact the cylender head more softly. A few dozen rounds wont kill the mechbox. If u can do it in yer firing range with bbs in the gun it is beter but u wont kill the gun so quickly if u dont fire off hundreds of blank shots tryin to adjust.
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Old January 31st, 2013, 15:58   #5
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Dry firing is not an issue you should really be worried about.
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Old January 31st, 2013, 16:08   #6
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The dry firing issue is when you sit down with your AEG to watch Blackhawk Down and join in for all the firefights.
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Old January 31st, 2013, 16:16   #7
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Dry firing is not an issue you should really be worried about.
In excess it definately is.
Madmax has been doing some testing that shows a significant increase in impact at the cylender head when dry firing.
I cant seem to find where he was sayin it, it was in a random thread and sort of just came up i thought he said he was eventually going to post data when he finnished the testing.
Wait i find some disscusion about it here.
http://www.airsoftcanada.com/showthread.php?t=18038
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That could be one problem with M16 cylinders pushing M4 barrels. I can't say without making measurements somehow. As it happens I'm working on a piston head of my own design. A prospective new product for AI. I'm slogging through impact measurement trials at the moment. One day when the damn thing is finished and proven, I could use the impact test apparatus to see if cylinder matching greatly affects mechbox impact.

In the meantime, do not dryfire your mechbox. I can show that dryfire imposes a peak impact force about 60% higher than when firing a 0.2g bb. The situation is even worse when you dryfire test your mechbox without a barrel. Even the barrel can produce a measureable reduction in piston impact.
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Old January 31st, 2013, 16:27   #8
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The dry firing issue is when you sit down with your AEG to watch Blackhawk Down and join in for all the firefights.
Lmaoo!
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Old January 31st, 2013, 16:42   #9
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In excess it definately is.
Exactly. He won't be doing it to excess so it's not something he should be worried about. Not to mention the fact that you HAVE to dry fire to adjust motor height.
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Old January 31st, 2013, 17:18   #10
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Y would u have to? I always lay mine on a bench in the back yard and shoot at the shed while i adjust mine seems to work fine for me.
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Old January 31st, 2013, 17:36   #11
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The dry firing issue is when you sit down with your AEG to watch Blackhawk Down and join in for all the firefights.
WAIT!



We're not suppose to do that?
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Old January 31st, 2013, 17:55   #12
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Y would u have to? I always lay mine on a bench in the back yard and shoot at the shed while i adjust mine seems to work fine for me.
Less sound interference, and why would I want to be shooting BBs at my work bench.
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Old January 31st, 2013, 18:59   #13
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Less sound interference, and why would I want to be shooting BBs at my work bench.

Nice yer workbench is in my shed. Ima have to start chargin you rent.
U can pay in tm pistols
Gun sounds no louder with bbs in it to me and the impact of the bbs into the cedar trees by the shed aint loud enough to effect ke hearin how loud the gun itself sounds.
Again im not sayin dont dry fire to test or adjust motor just sayin dont do it alot lol
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Old February 1st, 2013, 02:04   #14
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impact heavier at the cylinderhead when dry firing?

install sorbo.

sorbo is sorboest sorboing sorbo. It will sorbo away your non sorboing sorbo to help facilitate sorboing to increase rate of sorbo and prolong the sorbo to its sorboest.
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Old February 1st, 2013, 02:06   #15
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