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 Post subject: Re: .30 cal Disco Double
PostPosted: Thu May 09, 2013 9:38 pm 
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Joined: Sun Jul 15, 2012 10:49 am
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Location: Victoria, BC and Clarkston, WA
Nice update!!!

Thanks Bob!

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-Rick
Pardini K10
Brocock Concept .22
3 Custom Crosman 2260
Benjamin Discovery .22 w/Joe Hickey stock!
Crosman 150 pistol .22
4 Crosman MK 1 pistol .22
Mrodair CP-1M .22 and .177


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 Post subject: Re: .30 cal Disco Double
PostPosted: Thu May 09, 2013 9:47 pm 
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This really is looking good.

Going back to the o-ring, not taking it through the magazine makes perfect sense. I'd completely overlooked that.

Are you keeping track of the hours you spend on this build? I keep thinking that it's a shame that Crosman don't build their guns like this, but then of course I wouldn't be able to afford them!


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 Post subject: Re: .30 cal Disco Double
PostPosted: Thu May 09, 2013 9:54 pm 
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Location: Coalmont BC
Hours?.... surely you jest.... we're counting in days here, maybe weeks including the designing and drawing.... :mrgreen:

Bob

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Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
Airsonal;
Too many! Springers, Pumpers, CO2, but I love my PCPs and developing them!
Proud Member of the 2000+fps Club!


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 Post subject: Re: .30 cal Disco Double
PostPosted: Thu May 09, 2013 11:12 pm 
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Location: Victoria, BC and Clarkston, WA
rsterne wrote:
Hours?.... surely you jest.... we're counting in days here, maybe weeks including the designing and drawing.... :mrgreen:

Bob


I know how that goes! Tool design takes weeks for intricate welded and machined parts! My pub napkin sketches are only the start!:D

_________________
-Rick
Pardini K10
Brocock Concept .22
3 Custom Crosman 2260
Benjamin Discovery .22 w/Joe Hickey stock!
Crosman 150 pistol .22
4 Crosman MK 1 pistol .22
Mrodair CP-1M .22 and .177


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 Post subject: Re: .30 cal Disco Double
PostPosted: Fri May 10, 2013 5:24 am 
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rsterne wrote:
Hours?.... surely you jest.... we're counting in days here, maybe weeks including the designing and drawing.... :mrgreen:

Bob

Heh, I didn't mean to imply that the number was small. I just tend to think in billable hours rather than person weeks. 'Twas just a matter of curiosity :-)


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 Post subject: Re: .30 cal Disco Double
PostPosted: Fri May 10, 2013 8:11 am 
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rrdstarr wrote:
My pub napkin sketches are only the start!:D


Napkin CAD and I are old friends..real intuitive to use :wink: ...it's the computer variety that causes hair loss. :lol:

Al


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 Post subject: Re: .30 cal Disco Double
PostPosted: Fri May 10, 2013 10:11 am 
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Quote:
Napkin CAD and I are old friends..real intuitive to use ...it's the computer variety that causes hair loss.

Al

You got THAT right !!!

Bob

_________________
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
Airsonal;
Too many! Springers, Pumpers, CO2, but I love my PCPs and developing them!
Proud Member of the 2000+fps Club!


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 Post subject: Re: .30 cal Disco Double
PostPosted: Fri May 10, 2013 10:26 am 
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Posts: 6845
Location: Rocky Mtn Hse Alberta
EverHopeful wrote:
rsterne wrote:
Hours?.... surely you jest.... we're counting in days here, maybe weeks including the designing and drawing.... :mrgreen:

Bob

Heh, I didn't mean to imply that the number was small. I just tend to think in billable hours rather than person weeks. 'Twas just a matter of curiosity :-)


Non machinists do not realize how much time it takes to make even the simple stuff!
Building airguns is a labor of love not profit.
Still love it and it for sure is clear that Bob loves it as well!!!

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Walter


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 Post subject: Re: .30 cal Disco Double
PostPosted: Fri May 10, 2013 11:20 am 
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Location: Oshawa, Ontario
x2 I'm by no means as experienced as some on the forum but with what I have done do realize "its not that easy"

GT

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QB78D .22 w/ Leapers 3-9x40AO Mil-Dot
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Crosman 1100
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 Post subject: Re: .30 cal Disco Double
PostPosted: Fri May 10, 2013 11:28 am 
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All in good fun.... I wouldn't do this if I didn't love it.... It really doesn't matter how long it takes, it's the satisfaction I get from accomplishing what I set out to do.... or at least learn why it didn't work.... that makes it all worthwhile.... :mrgreen:

It's also the reason I refuse to do this stuff for profit.... mostly because I can't, unless I want to work for pennies an hour.... I don't enjoy repetitive machining, and of course that's the only way to make any money doing it.... I develop my own guns, sometimes as in this case as a prototype, or potential prototype.... and then give away the design free, not only here on the Forums, but to anyone (in this case Sean) who sees a potential market and wants to have a go at making them for sale....

While I'm going through the process, I try and document everything and publish a "how to" (or at least what I did) with the reasoning behind it.... That way, the body of airgun knowledge grows, and everyone benefits, especially if others follow my lead and share their ideas as well.... Most of the time I don't come up with anything original, it's been done before, but it's new to me, or at least the understanding of how and why it works the way it does is new to me....

Most of the time, when I'm finished a project to my satisfaction.... I'll let it go to help finance the next project.... My "Millenium Pumper" project is on it's way to a new home to pay for this one.... to end up in the collection of somebody who, I think, will really appreciate it....

Bob

_________________
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
Airsonal;
Too many! Springers, Pumpers, CO2, but I love my PCPs and developing them!
Proud Member of the 2000+fps Club!


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 Post subject: Re: .30 cal Disco Double
PostPosted: Fri May 10, 2013 12:23 pm 
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Bob your a true gentleman and I for one admire you for taking the time to share your knowledge and craftsmanship I've learned quit a bit from your how-to's thank you. :wink:

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"A candle loses nothing by lighting another candle"

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 Post subject: Re: .30 cal Disco Double
PostPosted: Fri May 10, 2013 4:08 pm 
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Joined: Sun Jul 15, 2012 10:49 am
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Location: Victoria, BC and Clarkston, WA
rsterne wrote:
Quote:
Napkin CAD and I are old friends..real intuitive to use ...it's the computer variety that causes hair loss.

Al

You got THAT right !!!

Bob


That is why I am bald too!

_________________
-Rick
Pardini K10
Brocock Concept .22
3 Custom Crosman 2260
Benjamin Discovery .22 w/Joe Hickey stock!
Crosman 150 pistol .22
4 Crosman MK 1 pistol .22
Mrodair CP-1M .22 and .177


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 Post subject: Re: .30 cal Disco Double
PostPosted: Fri May 10, 2013 9:59 pm 
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Joined: Thu Feb 02, 2006 11:35 pm
Posts: 3099
Location: Alberta Canada
Wow gentleman othis is deep. ..But like all agree with failures and triumphs, it all amounts to just one thing.

The love of the build.

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May the cry of the pack be with you upon your hunt

Whitewolf


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 Post subject: Re: .30 cal Disco Double
PostPosted: Sat May 11, 2013 4:19 pm 
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Joined: Sat Nov 03, 2007 4:19 pm
Posts: 8973
Location: Coalmont BC
I installed the cocking pins in the bolts today and machined out the breech to clear them....

Image

When the bolt is in the "down" position (shown), the head of the 4-40 SHCS rotates out of the way of the hammer pin into the recess milled in the side of the breech.... When the bolt rotates to the "up" position to open and load a pellet, it engages the hammer pin, drawing it back to cock the hammer.... Nothing magic, but complicated to measure umpteen ways to make sure it all works properly and allows the bolt to retract far enough to remove the magazine when the gun is cocked....

I inletted the stock for the breech band, finish sanded it, and put on the first coat of Watco Danish Oil yesterday.... The stock will be done in about a week.... I wet sand each of the next six coats, two with 220 grit, two with 400, and tha last two with 600.... and then give it a final coat of Minwax.... I think the "Forest Camo" combination of black, brown, and green in the Boyd's Laminated Blaster stock should be quite attractive when done.... It is much darker than the first photo with it unfinished....

I think all the machining is done except for the barrel.... and a shoulder on the Hatsan air stripper to locate the carbon fibre shroud.... and then the last step will be to make a transfer port from a piece of 5/16" Teflon rod.... Basically, once the barrel arrives, the gun is only days (hours?) away from initial testing.... I've already pulled the trigger and heard a satisfying BANG when the hammer opened the valve for the first time.... I won't be bluing the Disco Double tube and any small parts until after testing....

Bob

_________________
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
Airsonal;
Too many! Springers, Pumpers, CO2, but I love my PCPs and developing them!
Proud Member of the 2000+fps Club!


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 Profile  
 
 Post subject: Re: .30 cal Disco Double
PostPosted: Sat May 11, 2013 6:02 pm 
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Joined: Thu Feb 02, 2006 11:35 pm
Posts: 3099
Location: Alberta Canada
Lookin real good Bob, don't remember but were you leaving the breech white or were you gonna finish them?

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May the cry of the pack be with you upon your hunt

Whitewolf


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