Author Topic: The JSAR Raptor is now down the road  (Read 2746 times)

steveoh

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Re: The JSAR Raptor is now down the road
« Reply #30 on: January 12, 2021, 07:08:18 AM »
Well I sold the "first" one (.257 HP) for new JSAR price which is far less than I had in the FX since I was an FX Dealer at the time. Some time later I traded an older Sam Yang Recluse for another (.308). It was a basket case Raptor and it has certainly been a challenge to get it to a working condition. I did get a lot of free parts for it from JSAR though including the pressure tube, lower rail assembly, entire trigger group and tube to stock adapter.  The original titanium tube had many micro fractures inside which could NOT be honed or polished out.  ;D

Yea, in the few months working at JSAR had no less than 6 newly machined TI tubes I was attempting to assemble HP actions with.  The machine shop even went as far too manufacture oversize valve bodies to better fit the TI tube slightly larger I.D.  Tried soft 50 duro, standard 70 duro, 90 duro o-rings as well Quad X rings to try and stop air leakage around the valve body.

It came to light that the DOM tubing surface finish ( Drawn Over Mandrel ) while able to be ball honed baby butt smooth, while also trying spraying tube I.D. with Ceracoat WOULD NOT stop the leaking !!
Is is of my opinion this due to surface fretting from the DOM process.  Damn shame because those TI tubes sure were light as well great looking.

While i was there ... The TI tube HP guns got a substitute tube in steel ... made from Recycled Marauder air tubes.  ( Truth )

This is very interesting. I’ve heard that Titanium is a difficult metal to deal with but also rather remarkable in some applications. 

When I was in high school living in Japan, I raced motocross with some Navy guys who were on the USS Midway. One guy was a jet mechanic and he said sometimes a jet would land too hard and the tail section would get bent. I believe he mentioned the airframe. He said they put one jet away below deck for repairs, and the next morning they found the tail had sprung back to shape. Truth? Beats me.

Reusing Marauder airtubes? That confirms the rumors of Raptors technology being built around the design of a Marauder.

Awesome.
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Bullfrog

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Re: The JSAR Raptor is now down the road
« Reply #31 on: January 14, 2021, 10:32:29 AM »
I took the Raptors to be upgraded Flexes, and the Flexes used Marauder tubes. At least later gens did. I don’t know if the first prototype guns did. My short Flex is an early build and it seems like it’s tube is heavier than a Marauder’s. But I couldn’t promise that’s not my imagination. My long Flex was definitely using a Marauder tube, which proved to be problematic when filling above 3600psi.

I don’t see the point of a Raptor over the older Flex if it isn’t significantly lighter. I still have my short Flex after all these years and I’d call it a near perfect gun if it had a light weight tube.

Alan

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Re: The JSAR Raptor is now down the road
« Reply #32 on: January 14, 2021, 02:14:05 PM »
I'm not so sure.

The WAR Cobra I once owned, did not have a Marauder tube. The holes for the valve, rear plug, and trigger were different (I also owned a Marauder), as well as the screw length. The trigger, a Timney Calvin Elite, with proprietary, secondary sear, was pined into a carrier. It was similar, but not exactly a Marauder part.
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Alan

I have a Hill EC-3000 compressor. If you're a fellow Guild member, and you pass through Roswell, NM, I'll fill your tank as a courtesy (4,250 PSI limit).

Motorhead

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Re: The JSAR Raptor is now down the road
« Reply #33 on: January 14, 2021, 02:49:35 PM »
Raptor standard and the mini have ALUMINUM air tubes.  ONLY the Raptor HP has a Steel or TI air tube.
Only the tube ID & OD is similar between M-rods, WAR & JSAR with everything else different even tho somewhat similar.

Architecture tho .. YES all based with the original M-rods and evolving from there with each manufacturer Travis was involved with.
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