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Thread: Rail Gun prints

  1. #61
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    Oct 2003
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    Malvern, Arkansas
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    What type sighter cam setup do you have on there?

  2. #62
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    Feb 2003
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    San Antonio
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    Bill, if those are steel or carbide balls, you may want reconsider that choice. What material are you planning to make the rails out of? I am not saying they won't work, but you are probably not going to like them in use.

  3. #63
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    Oct 2015
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    Bristol, Connecticut
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    Dusty first -- Kind of embarrassed here as I don't know what that is for. Could you explain its function for me and maybe a picture.

    Jerry -- yes they are tundsten steel balls. The unit is a transfer bearing with a 150 lb. load capacity. They have good radial movement and restricted lateral movement. The rails will be a pair of stellite (cobalt alloy) rods for each bearing.

    "Bill"
    Last edited by Bill Gruby; 02-01-2016 at 12:32 AM.

  4. #64
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    Feb 2003
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    Oregon
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    Quote Originally Posted by Bill Gruby View Post
    Dusty first -- Kind of embarrassed here as I don't know what that is for. Could you explain its function for me and maybe a picture.

    Jerry -- yes they are tundsten steel balls. The unit is a transfer bearing with a 150 lb. load capacity. They have good radial movement and restricted lateral movement. The rails will be a pair of stellite (cobalt alloy) rods for each bearing.

    "Bill"
    Bill, The cam is used to go from the bottom part of the target to the top, Here is a pic. (Left handed rail though) Good luck...J
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  5. #65
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    Oct 2015
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    Bristol, Connecticut
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    The further I go into this project the more I realize I did not know what I have gotten myself into. Thank you for that info. I need to do more research to incorporate that cam. I now see how important it is.

    "Billy G"

  6. #66
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    Oct 2003
    Location
    Malvern, Arkansas
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    You may have been money ahead to buy a used railgun or at least try one out first. You said something in an earlier thread about eliminating unnecessary stuff from ones youve seen but everything on a railgun has a defined purpose i assure you. I havent seen any extras you can do without

  7. #67
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    Oct 2015
    Location
    Bristol, Connecticut
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    Thank you Dusty, you may be right, but I have to keep going now only at a much slower pace. The only thing I left out so far was the cam. I have a way to get it in without much trouble. Thank you again to all of you.

    "Bill"

  8. #68
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    Oct 2003
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    Malvern, Arkansas
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    Keep us posted on the progress. It looks very nice so far

  9. #69
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    Feb 2003
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    Tennessee
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    I noticed you have 3 "ball" type doodads for the top to sit on. Make that 2 doodads and a flat for the third...on the rear. Make one or the other something like delrin and put enough countersunk screws so that the delrin won't flex/warp when it get older.

  10. #70
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    Oct 2007
    Location
    Northwest Ohio
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    539
    Bill,
    I am following this thread with interest because 1) I love to see diy projects from talented individuals 2) I shoot benchrest and have always dreamed of owning/building a rail gun 3) I am a very amateur hobby machinist 4) I live in CT and would love to find out where you will be shooting this beauty when she is all done. I run the matches at Bell City in Southington (IBS score) and you are welcome to come to any of the matches and introduce yourself. The benches are definitely not rail gun worthy but the guys are top notch and a few of us do our own metal work.
    Good luck with your project and keep those updates coming!
    Mike

  11. #71
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    Feb 2003
    Location
    Texas Panhandle
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    One thing you'll find out from building your own rail gun is that you'll wind up changing things to make it better as you use it. I've built 3 rail guns and every one of them was different in design. The first one was pretty simple with the adjustment knobs for vertical and for the sighter cam being located at the rear of the rail gun where they were easy to get to from the back of the rifle. The second one was pretty unconventional and used two 3/4" plates put together for the base. Everything ran on dresser balls and play could be adjusted out on the vertical plate. It shot well and I used it for years. Aaron French owns it now. The third one was a copy of Jay Young's rail gun except it lacked the smoothness of Jay's rails when you moved it back and forth on the rails. I'm presently shooting a Jay Young rail, but still have the copy. The smoother the rail gun works and the faster you can operate it, the better off you are when it comes to rail guns. Here's some photos of the ones that I built.Rail gun page Also photos of a lot of the rail guns around the country in another link.

  12. #72
    Join Date
    Oct 2012
    Location
    south Florida
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    328
    Mike I went to your web page to look at the rail guns. Noticed the heading "our faith" clicked on it and read it, great testimony!!!! Thank you for having the courage to share it. It was Cool! Never did get to see the rail guns, But I saw what was more important. Thank you
    Last edited by ebb; 04-17-2016 at 08:00 PM.

  13. #73
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    Feb 2003
    Location
    Texas Panhandle
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    Quote Originally Posted by ebb View Post
    Mike I went to your web page to look at the rail guns. Noticed the heading "our faith" clicked on it and read it, great testimony!!!! Thank you for having the courage to share it. It was Cool! Never did get to see the rail guns, But I saw what was more important. Thank you
    EBB, the older I get the more important the faith part is and the less important the shooting becomes. I never did completely retire as I was still barreling a few competitors barrels. Found out though when I went back to gunsmithing that I missed it more than I had thought. Not so much the work, but the interaction with customers who had become friends.

  14. #74
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    Feb 2003
    Location
    Tennessee
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    OK...I'll ask

    I just hate to say I don't know what you're talking about but I have to do it AGAIN. You wrote:

    "Jerry -- yes they are tundsten steel balls. The unit is a transfer bearing with a 150 lb. load capacity. They have good radial movement and restricted lateral movement."

    What do you mean by "transfer bearing" and why any lateral movement at all? I'll also confess that I don't know which direction your talking about when you use them fancy words like radial and lateral but I can guess...then ask.

  15. #75
    Join Date
    Sep 2011
    Posts
    163
    Quote Originally Posted by Wilbur View Post
    I just hate to say I don't know what you're talking about but I have to do it AGAIN. You wrote:

    "Jerry -- yes they are tundsten steel balls. The unit is a transfer bearing with a 150 lb. load capacity. They have good radial movement and restricted lateral movement."

    What do you mean by "transfer bearing" and why any lateral movement at all? I'll also confess that I don't know which direction your talking about when you use them fancy words like radial and lateral but I can guess...then ask.
    Wilbur,

    It looks like what we call an omni roller. Basically its a ball that is mounted in a carrier that allows the ball to spin in any direction except up or down. Now I say there is no movement up or down but I havent seen any that dont have some play up and down. You see them mounted in say a floor and a box is pushed on to them and you can change the direction the box needs to go.

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