Chytac in final steps

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pyrofx
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Chytac in final steps

Post by pyrofx »

Well, been a while. Its getting close.
Specs....
2" od gr 9 ti tube 12" long
5 smoothe 60deg cone baffles with skirts
1 17-4 stainless cone baffle for blast cone
17-4 end caps threaded 24tpi

What a journey! Learned alot about Ti making this thing. Like go slow and take healthy cuts.

Tube started out 2" x .188 wall. Turned the outside first to have a true surface to start with. Then turned the inside of the muzzle end to 1.800 id 4" long. This is the blast chamber and end cap mounting. Blast chamber came out to 3" long. End cap/mount is 1" long.

Turned tube around in lathe and bored th other 8" 1.870". This left a step for the cones to sit against.

The baffles slide in with .002 clearance . Then end cap will screw on and clamp stack with .004 crush.

Ill post more as the final tuning and trimming are complete. I may also add a last cone at the exit end and trim .250 off one of the other skirts.

Weight came in heavy at 2# 11oz.
Greg
ImageImageImageImageImageImageImageImageImage
Last edited by pyrofx on Fri Apr 17, 2015 11:50 am, edited 1 time in total.
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BinaryAndy
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Re: Chytac in final steps

Post by BinaryAndy »

That looks fantastic, nice work.

Out of curiosity, what kind of bar did you use to bore 8" deep? I'll bet that wasn't the most fun part of the process. What kind of lathe did you use?
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pyrofx
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Re: Chytac in final steps

Post by pyrofx »

The bar was a 12" long 1" dia. Used a vn insert. Cut so so . Then ground a very positive rake on it and it cut like butter. .010 doc, 300 rpm. Uesed a prototrak 14" with 2" bore. Made a set os soft jaws with 4" of surface clamping.
Ill post more pics when i figure out how to copy paste off tinypic with the ipad. It just doesnt like to copy.
Greg
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Capt. Link.
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Re: Chytac in final steps

Post by Capt. Link. »

Nice more spec's please!
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pyrofx
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Re: Chytac in final steps

Post by pyrofx »

Image
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ick
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Re: Chytac in final steps

Post by ick »

What in the world did you draw on the end? Is that a sphincter?????
-----
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pyrofx
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Re: Chytac in final steps

Post by pyrofx »

ick wrote:What in the world did you draw on the end? Is that a sphincter?????
the nickname of the weapon system is the Cyclops. Eyeball will be laser etched when its done
Last edited by pyrofx on Fri Apr 17, 2015 5:23 pm, edited 1 time in total.
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T-Rex
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Re: Chytac in final steps

Post by T-Rex »

That's a lot of machining, good work.
A lot of threads on the distal end. Did you think of, maybe, interrupted threads, for ease of assembly?
Are you planning any clipping? Porting?
How did you come about the 1.5" spacing, between baffles?
Any reason you didn't go the plug weld route, to save weight?


I hope it performs spectacularly :D
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Enfield577
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Re: Chytac in final steps

Post by Enfield577 »

Excellent work, great to see

Cheers

D
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jimmym40a2
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Re: Chytac in final steps

Post by jimmym40a2 »

great job....
http://www.youtube.com/watch?v=nEZJ_C4LwzA
pyrofx
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Re: Chytac in final steps

Post by pyrofx »

T-Rex wrote:That's a lot of machining, good work.
A lot of threads on the distal end. Did you think of, maybe, interrupted threads, for ease of assembly?
Are you planning any clipping? Porting?
How did you come about the 1.5" spacing, between baffles?
Any reason you didn't go the plug weld route, to save weight?


I hope it performs spectacularly :D
I may clip them. The spacing was a wag. Based it off Jimmy's 50 cal can. The long threads are only 1" long so not to bad . The muzzle pressure is only 9100 psi , but better safe than sorry.

I just learned how to machine Ti , welding is next.

I may thread the muzzle end deaper , and make that thread .750 deep instead of .400.

And hell , it only weighs 2#11oz.
Greg
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Shift1
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Re: Chytac in final steps

Post by Shift1 »

Machine work looks great...
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Re: Chytac in final steps

Post by joe0121 »

Did you use a boring bar to do the inside of the baffle?
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