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Old 06-04-2010, 11:11 PM   #761 (permalink)
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I wish I could get a picture of the pitting, it's very reminiscent of some of the pitting on the 3357 I had temporarily.
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Old 06-05-2010, 02:45 AM   #762 (permalink)
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flex hone!!!
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Old 06-05-2010, 03:34 AM   #763 (permalink)
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what kinda power tube in there? i remember my stock Line Si was crap on both bushy's i bought new. switched to an aftermarket and all was good.
Id say check the barrel/paint match 1st though.
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Old 06-05-2010, 08:58 AM   #764 (permalink)
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Saucey send Agent Smith a PM and see if he will flex hone your barrel for you...

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Old 06-06-2010, 01:28 AM   #765 (permalink)
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Tried to make a custom donkey for the Bushmaster today. Everything was going great. I turned up a blank, threaded it for the valve seat, drilled for the screw, counterbored a nice flat for the frame screw to rest on, drilled and tapped for the air, and got down to the crucial last step. All I had to do was drill the passage from the air source to the valve chamber. I clamp it in, and drill... RIGHT into the hole for the frame screw. I had the part turned 90 degrees from where I wanted it.

2 hours wasted... but next time, I know what not to do.
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Old 06-06-2010, 04:05 AM   #766 (permalink)
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flyweightnate - Sorry to hear about your project not working out, and out of curiosity, what exactly do you mean by a donkey?

I also finally got the chance to remove the screws from barrel retainer that were stripped, and the barrel goes in MUCH smoother than it did before, so I'm going to try again tomorrow with the paint I have on hand, and if that fails I will be picking up some paint Monday. I'll try sending Agent Smith, or someone else with a flex hone a message after I try all that. I don't really have a lot of money so buying one isn't really an option right now.

On the power-tube issue, if the # attached to each one is about the size of the ID of the powertube, I believe mine is a 4. I very carefully tried sliding an allen wrench in there and a 4mm fit near perfectly with a little wiggle.
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Old 06-06-2010, 09:28 AM   #767 (permalink)
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"Donkey" is a slang term for the valve body- where the air source goes in, and the valve retainer nut holds the powertube and valve spring in.

If nothing else, I can use one of the two I currently have for the time being.

With regards to power tubes, they're not really measured in mm, and if they were, the allen wrench trick wouldn't work quite right anyways. You need to remember the 4mm is flat-to-flat, so point-to-point on a 4mm allen wrench is right around .182" diameter for the powertube. Somewhere in these threads is a quick little reading of which power tube is which diameter.


... and it says your powertube is a number 6, .189" inside diameter. Your powertube shouldn't be the problem, then. 6 is high-flowing, which means a lower pressure on the ball, usually.
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Old 06-06-2010, 02:12 PM   #768 (permalink)
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Originally Posted by flyweightnate View Post
Tried to make a custom donkey for the Bushmaster today. Everything was going great. I turned up a blank, threaded it for the valve seat, drilled for the screw, counterbored a nice flat for the frame screw to rest on, drilled and tapped for the air, and got down to the crucial last step. All I had to do was drill the passage from the air source to the valve chamber. I clamp it in, and drill... RIGHT into the hole for the frame screw. I had the part turned 90 degrees from where I wanted it.

2 hours wasted... but next time, I know what not to do.
What threads are the valve seats any way?

Ive got a lever changer with a slightly dinged up thread I want to chase
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Old 06-07-2010, 05:15 PM   #769 (permalink)
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What threads are the valve seats any way?

Ive got a lever changer with a slightly dinged up thread I want to chase
9/16-18. I'm pretty sure, anyways. Whatever a 9/16 UNF tap is.

I've just been having awful luck recently with parts... a stud I turned won't come outta the hole, now, and the red loctite on the other end broke free before the stud came out. Absolutely ridiculous. I have no idea how it got that stuck. I might need to use a drill and extractor or something of the sort, and turn a new stud.
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Old 06-07-2010, 05:49 PM   #770 (permalink)
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WHOOOOHOOO I actually have that tap already haha
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