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I recently had an air leak issue with my DM7 and took it to the local shop to be repaired. They replaced the solenoid and the eyes. My ? is have any of you ever heard the following which the Tech told me "On older guns the bore size of the barrel can have a negative effect on the solenoid. If you use to large of a bore it causes to much pressure on the solenoid causing it break." He recommended a .682 size barrel for the gun as that is the size used at our field. I was wondering if indeed using to large of a bore will indeed damage the solenoid as I do not want to replace it again but do not want to buy a new barrel if it's not necessary.
Thanks
Robert
 

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No. The only thing that the solenoid does is route air to make the bolt move back and forth. I have never heard of this theory, and I think the person who told you is crazy for thinking it. In fact, a large bore size should cause less pressure against the bolt (as if it actually matters..)

Using a slightly smaller bore than your paintballs size is recommended if you want to use less air per shot. It almost certainly has nothing to do with the longevity of any part on your gun. Sometimes solenoids go out; they're a piece of electrical equipment. It's not anything you would need to worry about, unless you over pressurized it and blew it out.
 

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even if he had a PMR instead of a DM7 so what? lets say you physically block the bolt from moving. the noid will still function just fine in either case. in a balanced spool dumping the air in front of the bolt and putting air in behind it to try and move it forward, the only difference would be the volume of air that went through the noid but it would not even experience any different forces than it would should the bolt be moving just fine.

in an unbalanced spool you would even still see the same volume of air coming through the noid since the air pushing it back would vent down to 0 still

I am seriously wondering if this guy put a new noid in your marker for no reason other than to charge you more money.

did he give you the "broken" one back?
 

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You don't need to get crazy involved in thinking how the marker works. The only thing you have to keep in mind is that it is a DM7 and the age of the marker alone should tell you that it was about due for a repair. If you haven't been replacing solenoids frequently I'd say the guy at the shop is just full of **** wouldn't you?
 

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O yes, I would absolutly agree about this guy. My DM6 has never had a problem, although I will say I have the large parts kit with a spare noid and I honestly dont know if the original or the spare is in it anymore

rtbgma- dont go back to this shop, the guy is an idiot
 
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