Primitive Archer
Main Discussion Area => Bows => Topic started by: paulsemp on May 11, 2016, 11:47:13 pm
-
I finally found two pipes that perfectly mate. 11/4 thin-walled conduit and 11/4 Type L copper. Only downside I've seen yet is that there's a seam weld on the Conduit that protrudes inside maybe a 64th of an inch. Very easy to remove with a half round file. Stick them in a vice and oval out. Perfect Flawless fit. Have not installed it yet but I cannot see what the downside may be. Copper is soft and can dent but so is brass. Thousands of feet of each on the job I'm at now and I already got permission for scraps. Hoping the best considering I can't stomach spending $40 on two little pieces of metal. Plus I'm getting close to nothing but billets. Any you guys interested in trying that are going to Marshall I'll bring some with me for you guys to try out.
-
I'd like to try some Paul. Maybe we can work out a trade for a couple of sets.
-
I also meant to say that it finishes out just slightly larger then the small takedown sleeve you buy it all the archery shops.
No problem Clint.
-
I aint scared, bring me a set and Ill toss some yew on them.
-
Good find, Paul, and good luck with 'em!
-
Paulie, if ya got enough for a set for me, I'd give a set of Semp Sleeves a try!
-
If you have an extra set, I'll give one a try Paul. See you in a couple weeks.
-
Paul, i would go for a more egg shaped profile.
What is the outer diameter of the main pipe?
Copper is a bit soft as you already metioned, brass is stronger. I've used also steel/steel combo with success, perhaps you can find a matching steel pipe at work.
-
Ya simson that was just a test in the shape could go anyway you want. I work in construction at a lot of Laboratories with all sorts of different piping and I've yet to find anything that fits this tight. I would love to know of any pipes that fit that tight. I saw your post on the telescopic poles and all the ones I've found are very sloppy. As for the soft copper I figure once it's glued in there's really nowhere for it to deform. But it certainly could scratch. No promises here on the ones I'm bringing but for free it's certainly worth a shot. I'm going to get a set of billets ready with sleeves so I can make a bow at Marshall with them. That way if there's a failure I could throw all of them in the garbage or find a solution
-
Sure. thanks Paul, I'll take a set. Been needing a set for a yew bow Im going to start
-
Please count me in on a set .....Thanks Paul
DBar
-
thats great paul i recently found that a 1 1/2'' electric conduit and some 1 3/8'' 20ga stainless steel tubing i got from work fit nicely together ;D
(http://i1074.photobucket.com/albums/w411/dylanholderman/Mobile%20Uploads/2016-05/359C2DAA-55AC-4F69-A34D-10CA4107E101.jpg) (http://s1074.photobucket.com/user/dylanholderman/media/Mobile%20Uploads/2016-05/359C2DAA-55AC-4F69-A34D-10CA4107E101.jpg.html)
(http://i1074.photobucket.com/albums/w411/dylanholderman/Mobile%20Uploads/2016-05/E51D7C3A-5FE8-4C7A-848B-AAFF7E24F142.jpg) (http://s1074.photobucket.com/user/dylanholderman/media/Mobile%20Uploads/2016-05/E51D7C3A-5FE8-4C7A-848B-AAFF7E24F142.jpg.html)
-
Got one setup going. Looking promising
-
looks like a nice snug fit, and the billets have a bit of character >:D >:D >:D
-
If you do a lot of bow 'takedowning' the steel will wear the copper. Steel on steel would be my preference. Hard to get a really good tight fit without bulging the copper.There has to be someone who makes steel tubes that will fit. I use glass now because it allows you to use any handle shape and is super strong.
-
Looking good Paul, for what its worth most t/d bows stay one way or the other most of the time from what i have seen and aren't constantly being broken down
-
Well I tried not to get excited about this for good reasons. Got it strung up and started yanking on it a bit and the conduit aka thin wall EMT is starting to to deform from the pressure on the joint. There is slop in the handle that was never there. EMT, I can only imagine has a very low carbon content and hardening it would do absolutely nothing. So I just scrapped the idea and glued the two together permanently. Sorry guys I was hoping to bring a bunch of sleeves to hand out in Marshall but I will be wasting everyone's time from what I can tell at this moment :'(
First brace
-
Sorry it didn't work out Paul.
I was an electrician for 10 years in our family business. I just now read through this post. I was a little concerned about the EMT myself. See now days it's pretty much galvalume, that makes it a bit lighter and easier to bend. Now I'd you could get your hands on some more vintage EMT, say from the 80's that would probably work pretty good. That stuff is as hard as heck.
I found that the brass fitting that is for a tub drain extention and a piece of 1/1/4in top rail chain link fence pipe fits good together. But haven't tried it on any billets. A friend of mine uses the junctions in the top rail chain link fence pipe for his take down sleeves.
Patrick
-
Paul, I'm not sure if I had understood everything you mentioned.
Just one question: have you glued on the copper properly? I mean is all the air between the wood and tubing wall filled with epoxi?
I do this job very carefully while heating up the pipe with a bulb, this makes the epoxi run down like water and fill all the holes.
-
Simson no problem with the copper. The steel tubing is deforming due to the pressure on the joint. The tubing is electrical conduit. It is not a hardened steel. I was very surprised considering the joint was extremely tight and nice. My caveman brain thinks if the two pieces are perfectly mated how could the outer sleeve bend. Honestly I do not think it was bending but actually stretching. Nothing ventured nothing gained
-
Time ventured and insight gained! Good experience thanks for sharing! Now is where a bunch hop on and tell you they knew it wouldn't work haha
-
Thats ok man. Better you finding out about it than us! ::)
-
An old steel mountain bike frame might supply a decent sleeve if you cut a piece of seat tube and seat post. Certainly the fit will be flawless.
-
I wondered about the EMT, Now I know. If you didn't try, and didn't know, then you would have wondered. Good study anyhow.
-
I have no clue regarding the properties of the metals you are working, but what about a heat tempering process after you deform the pieces in the vise?
-
No carbon to do that.
-
Duct tape?
-
No carbon to do that.
You can get a 40-45 rockwell on mild steel with superquench, but in this instance i would find i differant tube