|
|
Post by ET on Jun 16, 2019 15:43:49 GMT -5
I Did so well with my knurling project that's still ongoing for an upgrade when I find a specific material that I thought I would try another project. So here is the initial design phase. I'm sure someone will guess what it is. Ed  |
|
|
|
Post by ET on Jun 18, 2019 15:22:32 GMT -5
This project is off to a slow start as I'm having some difficulties finding the right spring candidate. Once I do it's off to the races as I know how to finish this 5-piece project with 2-screws. Also one change will be eliminating the cup and replacing it with a circular T. I'm really itching to get started but most dimensions will be dictated by spring dimensions. One requirement for the spring will be 40-in/lb rating. Will update when the project gets into gear.
Ed
|
|
|
|
Post by edge on Jun 19, 2019 7:34:48 GMT -5
3/8 hole, almost the right size for my ramrod  |
|
|
|
Post by ET on Jun 19, 2019 9:08:25 GMT -5
3/8 hole, almost the right size for my ramrod Your on the right track. I'm trying to put a gauge together that will measure the load resistance instead of using a bathroom scale. While doing some research on compression springs I've found they have different starting points for poundage. Say a spring rated for 40in/lb starts compressing at 18lb. To get better coverage you need 2-springs at different ratings to cover a larger range of poundage. To be honest this is getting more challenging than expected. But hey I love a challenge, chuckle. Ed |
|
|
|
Post by edge on Jun 19, 2019 10:54:50 GMT -5
Belleville spring/washer would probably be ideal. They have a distinctive snap, and are adjustable depending on how you stack them. edge.  |
|
|
|
Post by edge on Jun 19, 2019 11:30:34 GMT -5
Never mind, I realized you probably did not want a precise amount of pressure ( as in for loading ), you want to measure force required to push the bullet down the bore with your knurled bullets. oops  Well if you want to make a load packer, the Belleville springs would be my go to spring. edge. |
|
|
|
Post by ET on Jun 19, 2019 12:23:12 GMT -5
Edge I do appreciate you taking an interest in this project From the information about spring sizes found at different websites I decided to start some preliminary work.  If all goes as planned this will not be a large and clumsy gauge. Just have to wait and see what my local compression spring search finds. Ed |
|
|
|
Post by ET on Jun 20, 2019 14:46:50 GMT -5
Okay I had a pleasant surprise on my outing this morning. First stop was at a hardware store to see what they might have for compression springs. Lo and behold that had one that I felt would make a good candidate for my project. It's now installed and ready for calibrating along with scoring poundage graduations beside the window slot. Thought that a picture should be included at this stage of construction.  May be a bit before I get to the next stage as I need to catch up on chores that I have again neglected. Such is life, chuckle. Ed |
|
|
|
Post by ET on Jun 21, 2019 6:39:29 GMT -5
Last night was laundry night and laundry area is located beside my little workshop area. If I have to wait for laundry I couldn't resist continuing on my project. As it turns out the max load on the spring is 40lbs. I was hoping for a little more but for now it will have to do. Picture below is complete disassembly of all the components if anyone is interested. Accuracy should be within a few lbs. The graduation lines are scribed on the aluminum with the addition of red permanent marker to increase visibility contrast. Yeah I know a little sloppy, chuckle.  |
|
|
|
Post by edge on Jun 21, 2019 7:43:54 GMT -5
That spring appears to a home run right out of the box, cool edge. |
|
|
|
Post by ET on Jun 21, 2019 10:22:16 GMT -5
That spring appears to a home run right out of the box, cool edge. I like to think of it as a triple hit, chuckle. I would still like to see if 50-60lbs can be obtained if another heavier spring with same diameter and length can be found. The design principle is good IMO. I don't believe my current load resistance exceeds 40lbs but nice to monitor any change with temp and fouling. The bonus here is that I had on hand (minus spring) the material to work with. Spring was $3.09 Cdn before tax and some electricity usage. Couldn't produce this tool and cheaper, chuckle. Ed |
|
|
|
Post by ET on Jun 21, 2019 16:30:26 GMT -5
Had time this afternoon so I thought I would test my new gauge on my 10ML-II. First I gave the bore a good cleaning. Then proceeded with a 250gr FTX knurled to .454 diam. and Harvester sabot. Pushing my load down slower than norm I watched the gauge show 20lbs with the odd momentary flux to 19lbs. For all intensive purpose my load resistance is 20lbs. Now I know.
Ed
|
|
|
|
Post by billc on Jun 21, 2019 17:13:38 GMT -5
At work I have used small Whitey/Swagelock relief valves. They had replaceable springs and we would purchase the spring kit for the application. Low pressure spring was good for 10 to 250 psi. I was buying nuclear grade parts so I couldn't tell you what a commercial grade spring would cost, more than $3, but it would cover your desired range.
|
|
|
|
Post by ET on Jun 21, 2019 19:10:01 GMT -5
At work I have used small Whitey/Swagelock relief valves. They had replaceable springs and we would purchase the spring kit for the application. Low pressure spring was good for 10 to 250 psi. I was buying nuclear grade parts so I couldn't tell you what a commercial grade spring would cost, more than $3, but it would cover your desired range. Thanks for the heads-up about Whitey/Swagelock relief valves as a possible source. Monday I have to go to a chemical plant to do some NDT and will have a chat first with the pipe fitters. If I'm lucky there's a company that goes around checking and rebuilding valves. Maybe I might get to talk to one of the tech fellows. Again thanks for a new direction to explore. Ed |
|
|
|
Post by ET on Jul 6, 2019 21:39:16 GMT -5
At work I have used small Whitey/Swagelock relief valves. They had replaceable springs and we would purchase the spring kit for the application. Low pressure spring was good for 10 to 250 psi. I was buying nuclear grade parts so I couldn't tell you what a commercial grade spring would cost, more than $3, but it would cover your desired range. My thanks again for directing my search. I now have more of a selection of springs to examine. I will also need to build a slightly larger diameter housing at a later date. Ed |
|
|
|
Post by ET on Jul 7, 2019 14:14:47 GMT -5
This project is taking on a real challenge. The spring I've chosen is a 5/8" diameter and I'm only geared up for 1/2" hole with drilling. Okay I have a small boring tool that can safely reach 3" but I need 3-1/4" depth. 2-hold down screws keep the tool locked in place and if I tried just 1-hold down screw I would get tool shifting. After burning up a few brain cells, chuckle, I've come up with an idea for a support adapter for my boring tool setup to reach that additional 1/4". So I'm now in scrounging mode, chuckle.
Ed
|
|
|
|
Post by billc on Jul 8, 2019 17:47:58 GMT -5
At work I have used small Whitey/Swagelock relief valves. They had replaceable springs and we would purchase the spring kit for the application. Low pressure spring was good for 10 to 250 psi. I was buying nuclear grade parts so I couldn't tell you what a commercial grade spring would cost, more than $3, but it would cover your desired range. My thanks again for directing my search. I now have more of a selection of springs to examine. I will also need to build a slightly larger diameter housing at a later date. Ed I hope the larger selection of springs works out for you. Bill |
|
|
|
Post by ET on Jul 8, 2019 21:32:16 GMT -5
Bill
I feel good vibes literally with one spring I handled. Wire is over 80-thou. thick with a length of 2-3/4". My pipe fitter foreman friend at one site location said he talked with the "Instrumentation People" who had some different springs kicking around they were going to toss. My friend caught the toss and then tossed them to me, chuckle. This is the result of friendship that has cooperation foundation or one hand washes the other. Last Saturday evening my friend was in a bind to get some specific inspection done on a pipe line that needed to be back on line ASAP. Okay I gave up my Saturday evening to go and get that inspection done for him. Well that evens the score card until next time, chuckle.
Ed
|
|
|
|
Post by billc on Jul 10, 2019 17:34:36 GMT -5
Ed,
It's always good to have friends with the fitters, boiler makers, electricians, I&C, store room, operations, security, custodians, and most importantly the ladies in the cafeteria :-D I always liked the give a penny take a penny plan. As a chemist I can't tell you how many swimming pools and mossy roofs I've "fixed" or how many wells I've "checked". Glad to hear a like minded soul.
Bill
|
|
|
|
Post by ET on Jul 10, 2019 19:55:45 GMT -5
Ed, It's always good to have friends with the fitters, boiler makers, electricians, I&C, store room, operations, security, custodians, and most importantly the ladies in the cafeteria :-D I always liked the give a penny take a penny plan. As a chemist I can't tell you how many swimming pools and mossy roofs I've "fixed" or how many wells I've "checked". Glad to hear a like minded soul. Bill I agree it is good to have many friends in many different fields where we can help each other. I often extend myself first as an introduction to see if a friendship can be established. Life on the job goes so much better all around when people work together. Sad to say this is not always possible but most time it is. My favorite saying is "Help me to help you" suggesting a cooperative association. I was only kidding about the score card as I really don't keep track with established friends,chuckle . I too enjoy knowing there is another like minded soul. Ed |
|
|
|
Post by ET on Jul 28, 2019 17:22:59 GMT -5
Okay Big Brother is ready for calibration. The larger spring definitely requires more force to bottom it than the smaller gage. Thanks to Billc's suggestion I found a source for a specific spring. Now as Edge would say "It's a Home Run". I don't plan on using more than 20lbs load resistance but have use for the additional poundage of at least 30lbs that I require. My load tooling is basically complete. Ed  |
|
|
|
Post by billc on Jul 28, 2019 17:52:41 GMT -5
I love the ingenuity on this board!
|
|
|
|
Post by ET on Jul 28, 2019 18:01:43 GMT -5
I love the ingenuity on this board! And I love the participation of team players to reach a goal. Ed |
|
|
|
Post by ET on Sept 1, 2019 20:57:50 GMT -5
Just wanted to put closure on this thread. As it turns out I don't have enough ramrod sticking out when loading to get full usage. So an extension was needed to be built.  |
|
|
|
Post by mrbuck on Sept 1, 2019 21:18:57 GMT -5
Very nice !
Chris
|
|
|
|
Post by billc on Sept 3, 2019 20:21:39 GMT -5
Well done!
|
|
