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  1. #1
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    Default GTR BTS Flushing System

    Good day

    Do any of you know thd GTR BTS flushing system? I see PTG has ig on their website and was interested to hear how it works.

    Regards

    Konrad

    Sent from my SM-G960F using Tapatalk

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    I checked out the PTG link. Doesn't look like you get much for your $150. Looks very similar to my home-made system. I used a carbonator pump ($50 on ebay), and a Deublin rotary union ($25 ebay) and then just some tubing and a bucket from Lowes. I modified my pump with a lighter spring to give about 20 psi (v. the 150 psi it put out as it was) and that was about it. I use Houghton HOCUT 795MP-RHS water based coolant.






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    Where did you get that fine, precision machined, green cutting fluid redirection device???

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    My own custom design. I'll sell you one for $100.

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    Quote Originally Posted by GenePoole View Post
    I checked out the PTG link. Doesn't look like you get much for your $150. Looks very similar to my home-made system. I used a carbonator pump ($50 on ebay), and a Deublin rotary union ($25 ebay) and then just some tubing and a bucket from Lowes. I modified my pump with a lighter spring to give about 20 psi (v. the 150 psi it put out as it was) and that was about it. I use Houghton HOCUT 795MP-RHS water based coolant.





    Thank you for the info and photos.

    Sent from my SM-G960F using Tapatalk

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    Good day.

    So i made a rotary coupler using some stainless steel, a bearing and an oil seal. It works great and lo leaks.

    Here is a photo.

    For now i use some tubing and hose clamps to connect to the coupler.

    Regards

    Konrad

    Sent from my SM-G960F using Tapatalk

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    Here is some more pics.

    Sent from my SM-G960F using Tapatalk

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    Have it, works fine.
    Why buy through PTG? Just buy direct from Greg...
    Model BTS | gretanrifles

  10. #9
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    I switched from a Gre-Tan to a generic Deublin rotary coupler. I drill/tap the muzzle end of the blank for 1/4" NPT. Much better flow, more secure, and it puts the sacrificial first inch of the muzzle to use. If I need to set a barrel back, I have cutoffs with the pipe thread remaining that are threaded to screw on 1/2-28 or 5/8-24 muzzles.

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    Seems a lot of unnecessary work....

    Sent from my Pixel 2 using Tapatalk

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    Quote Originally Posted by jasonixo View Post
    I switched from a Gre-Tan to a generic Deublin rotary coupler. I drill/tap the muzzle end of the blank for 1/4" NPT. Much better flow, more secure, and it puts the sacrificial first inch of the muzzle to use. If I need to set a barrel back, I have cutoffs with the pipe thread remaining that are threaded to screw on 1/2-28 or 5/8-24 muzzles.
    This is also how I do it as well. works great and never leaks and can spin 1200rpm with no hose clamp wobbling all over the place.

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    Quote Originally Posted by Danny1788 View Post
    This is also how I do it as well. works great and never leaks and can spin 1200rpm with no hose clamp wobbling all over the place.
    You running a carbide reamer? Never heard of running HSS at that high a speed.

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    Quote Originally Posted by Danny1788 View Post
    This is also how I do it as well. works great and never leaks and can spin 1200rpm with no hose clamp wobbling all over the place.
    How fast are you feeding that in? You need to have a reasonable chip thickness to keep the reamer from chattering.

    Sent from my Pixel 2 using Tapatalk

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    Quote Originally Posted by tobnpr View Post
    You running a carbide reamer? Never heard of running HSS at that high a speed.
    I doubt he’s chambering at that speed, but on shorter barrels, I have my flush system hooked up start to finish. I clamp the RPMs at 4500 but I have tested my flush to 6000 RPM and could get away with it just fine.

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    Quote Originally Posted by tobnpr View Post
    You running a carbide reamer? Never heard of running HSS at that high a speed.
    He said he can run the coupler to 1200 rpm w/o wobble.
    Didn't say he chambered at 1200 rpm.

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    Quote Originally Posted by tobnpr View Post
    You running a carbide reamer? Never heard of running HSS at that high a speed.
    I don't chamber at 1200rpm, normally around 220rpm. But I have hooked up the muzzle flush system being taped and centered it doesn't wobble or give me any vibration when turning the tenon at 1000rpm and threading at 360rpm. Also I cut the small chamfer on the chamber with a carbide boring bar and spin it at 1000rpm with the muzzle coupler still hooked up.


    heres the one I used and its super cheap, I use a brass 1/4 by 1/8 NPT bushing to thread into the barrel. SS 9SS04MP25XFP25-Z- - Super Swivel - 1/4" Male Pipe X 1/4" Female Pipe - 90 Deg | eBay

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    Quote Originally Posted by Konrad308 View Post
    Here is some more pics.

    Sent from my SM-G960F using Tapatalk
    This one i made cost me $6 to make and maybe an hour om my lathe. It works great. I have not used it faster than 300rpm. I chamber between 40 and 50rpm so dont really see a need for anything better. The rubber tube is a bit floppy but works and is quick to install. Sometimes when you rechamber there is no extra barrel length to sacrifice so the tube comes in handy there.

    A big thank you to everyone for the comments and photos. Much appreciated.

    Regards

    Konrad

    Sent from my SM-G960F using Tapatalk

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    I have seen some setups that use an airline quick connect as a swivel fitting.

  23. #19
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    I tried the airline swivel and it worked for a little bit but eventually started to leak, its not really meant to be spun like that and the seals wore out quick.

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    Quote Originally Posted by Danny1788 View Post
    I tried the airline swivel and it worked for a little bit but eventually started to leak, its not really meant to be spun like that and the seals wore out quick.
    Dual Head Air Chuck Washer | Milton Industries


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