Tim71 Posted June 9, 2014 Share Posted June 9, 2014 Okay, I've been working all day on building and testing my calibration rig to get my method in line with the numbers Eric got. I'm learning a lot about how much the position of the chains and every little thing makes a difference. I finally got my method down to where my numbers were close or the same on some pieces that Eric had cal'd back when so I thought I'd post a few results. 8mm CRS @ 7 inches. This calibrated for me at 431. This is the same steel that Eric calibrated at 425 for the steel slayer's list back in 09. 19/64 CRS @ 7 inches. This hit 380 for me. This is the steel I usually cut to 6.75 to work my way up. Spiral Red nail bought earlier this year. I tested a few of these and they all hit 445 to 450. I'd say that's about right compared to the 8mm. My 5/16 CRS @ 7 inches. I only tested one of these but I could tell early on it was harder than the red. It hit 471 pounds. Now I couldn't resist testing the Gold Nail. Wow!!! 606 pounds to what I thought was 30 degrees. After I pulled it out of the rig and measured it, it was probably 29.5 so I put it back in and took it up to 610 and that sent it past 30 degrees. If I measured a few, it would probably average 605 to 610. This is not the spiral one by the way. This is one serious piece of steel. I have a new respect for Eric's work and because this is much more time consuming than I would've thought. Off to bed now. 2 Quote Link to comment Share on other sites More sharing options...
EJ Livesey Posted June 9, 2014 Share Posted June 9, 2014 Yea dude it sucks. Cutting, grinding and calibrating is just terrible work. Just out of curiosity how far in are you tightening the u- bolts on the steel you are calibrating? Quote Link to comment Share on other sites More sharing options...
Sean Cashman Posted June 9, 2014 Share Posted June 9, 2014 Sounds good Tim! I bet it's a pain in the rear to load up that rig! It'd be nice if you could get some of the DR that Mike K. had calibrated in the past and see how that compares to your rig also. Are you looking at selling some calibrated stock in the future at all? Quote Link to comment Share on other sites More sharing options...
Tim71 Posted June 9, 2014 Author Share Posted June 9, 2014 (edited) Sean, definate possibility. EJ, not sure what you mean. Do you mean how tight am I tightening the bolts or how far in from the ends of the bar am I placing the U'bolts? I'll play with it some more tonight and post more in detail. Edited June 9, 2014 by Tim T Quote Link to comment Share on other sites More sharing options...
acorn Posted June 9, 2014 Share Posted June 9, 2014 When I built mine i did a beefy tall loading pin and used the engine hoist. I could get up to around 900# before running out of room for plates that I had at the time. Was scary enough doing those weights I would wear safety glasses and steel toe boots. Quote Link to comment Share on other sites More sharing options...
Tim71 Posted June 9, 2014 Author Share Posted June 9, 2014 Yeah Aaron I bet that was kinda scary. I've been thinking about the safety glasses and may have to start doing that. My calibration rig is much different than any before as it's my own design. It uses as scale mechanism and not weights. I sunk alot of money into it as it's been state certified and calibrated for accuracy but hey, it's something I've always wanted to do. 1 Quote Link to comment Share on other sites More sharing options...
EJ Livesey Posted June 10, 2014 Share Posted June 10, 2014 Sean, definate possibility. EJ, not sure what you mean. Do you mean how tight am I tightening the bolts or how far in from the ends of the bar am I placing the U'bolts? I'll play with it some more tonight and post more in detail. Yea sorry, how far in from the ends? Quote Link to comment Share on other sites More sharing options...
Tim71 Posted June 10, 2014 Author Share Posted June 10, 2014 Did some more testing tonight and I think my numbers are accurate. First I calibrated 2 of the "mutant" 60d sivacos that Eric calibrated at #440. First one hit 440 and the second hit 430. Second, I calibrated a JH green G5. These have always calibrated right at 400 and this one hit 400 exactly. Next up, a triangle G8 from the same batch that calibrated at 495 for the steel slayer list. 500 pounds. Next up and kinda disappointing, my 11/32 crs at 7 inches hit 500 exactly. I may have went kinda fast on this so I'm going to try another piece and go a little slower. Finally, the 23/64 CRS at 7 inches hit 602.5. I also calibrated my 5/16 stainless but I forgot to write it down and I can't remember it. It was in the mid 400s though, I remember that. EJ, I've moved the clamps out 1/8 inch further to the ends. So basically the center of the clamp is at 5/8 inch instead of 3/4 that Eric used. With my "non weight" setup, this is matching his numbers. If I put the clamps at the 3/4 mark then the numbers were a little high. Quote Link to comment Share on other sites More sharing options...
Mike Sharkey Posted June 10, 2014 Share Posted June 10, 2014 Tim, I'm gonna come out and say I'd love to see a pic of you, your rig, and perhaps even a video of you bending something . 2 Quote Link to comment Share on other sites More sharing options...
EricMilfeld Posted June 10, 2014 Share Posted June 10, 2014 Tim, when I started calibrating not all of my plates had been weighed. Nearly all them are heavy, and only one ten pound plate is light. So, a good rule of thumb is to add about 5 pounds to my figures. This means you are even closer to my figures on a lot of this. Quote Link to comment Share on other sites More sharing options...
Tim71 Posted June 10, 2014 Author Share Posted June 10, 2014 Eric, that's great to hear. I'm pretty proud of the "calibratinator" as me and the kids are calling it. Quote Link to comment Share on other sites More sharing options...
EricMilfeld Posted June 10, 2014 Share Posted June 10, 2014 Eric, that's great to hear. I'm pretty proud of the "calibratinator" as me and the kids are calling it. Lol. Love the name! Quote Link to comment Share on other sites More sharing options...
Tim71 Posted June 10, 2014 Author Share Posted June 10, 2014 Yeah, I might even let them put a cool paint job on it. Quote Link to comment Share on other sites More sharing options...
king crusher Posted June 11, 2014 Share Posted June 11, 2014 Post videos Tim haha Quote Link to comment Share on other sites More sharing options...
Tim71 Posted June 11, 2014 Author Share Posted June 11, 2014 3 more calibrations tonight. 5/16 stainless by 7 inches - 460 pounds .319 (41/128) CRS by 7 inches - 455 pounds 11/32 without rushing this time - 515 pounds Quote Link to comment Share on other sites More sharing options...
EJ Livesey Posted June 11, 2014 Share Posted June 11, 2014 I just checked my notes from when I helped Mike K, we went 3/4" in not 1.5". I should have been thinking 1.5" total inches not 1.5" per side. But with a Weighted set-up we wanted 5.5" between the u-bolts or clamps. Quote Link to comment Share on other sites More sharing options...
Tim71 Posted June 11, 2014 Author Share Posted June 11, 2014 That's the same that Eric used. I started with that but the numbers were a little high so I moved them out a very slight ammount and now we're matching. Not sure why it would be different but maybe with my digital setup it's that much smoother. I'm also trying to take little breaks to mimic the time it would take to load more weight onto the loading pins. This actually makes quite a difference as well. Quote Link to comment Share on other sites More sharing options...
EJ Livesey Posted June 11, 2014 Share Posted June 11, 2014 How heavy can your set up go? Quote Link to comment Share on other sites More sharing options...
acorn Posted June 11, 2014 Share Posted June 11, 2014 3 more calibrations tonight. 5/16 stainless by 7 inches - 460 pounds .319 (41/128) CRS by 7 inches - 455 pounds 11/32 without rushing this time - 515 pounds Tim, if you had any interest I could give you a login for the management interface where I add the Steel ratings figures for the website. That is if you are interested in adding your own figures to the database. - Aaron Quote Link to comment Share on other sites More sharing options...
Tim71 Posted June 11, 2014 Author Share Posted June 11, 2014 Aaron, that sounds great. I'd be happy to add to the figures. EJ, my winch has a 2000 pound capacity but right now I need to get a better connector for the end connection. It moved a little on the Gold nail but I've got a few ideas. I've already strengthened it some but I need to practice with the heavier U-bolts to get the placement right on them. I think I could easily go 700 pounds right now but when I get everything right, 1000 pounds up to 1500 should be no problem. Quote Link to comment Share on other sites More sharing options...
Tim71 Posted June 12, 2014 Author Share Posted June 12, 2014 2 batches of 1018 CRS tested tonight. 3/8 by 8 3/8 (gold nail dimensions) 470 pounds 3/8 by 8 3/8 batch #2 435 pounds I now have an even better appreciation for the gold nail. These 2 batches of steel were not the box store stuff but good 1018 steel from a steel supplier. Quote Link to comment Share on other sites More sharing options...
Tim71 Posted June 19, 2014 Author Share Posted June 19, 2014 Just got a new shipment of steel and calibrated a couple of very interesting pieces. 11/32 1018 CRS at 7 inches - 615 pounds. Wow. I was hoping this would be a little tougher than my other batch but this is some serious steel. 21/64 stainless at 7 inches - 655 pounds. Whew. This one really surprised me as well. Quote Link to comment Share on other sites More sharing options...
Tim71 Posted June 19, 2014 Author Share Posted June 19, 2014 Also, tested some smaller steel I bought for my boys. 3/16 CRS at 6 inches - 105 pounds. My oldest son Chris bent this unbraced in my thin suede show wraps. Not bad for a 14 year old but I think he can do better. 11/64 CRS at 6 inches - 70 pounds. My youngest son Eric bent this unbraced at 10 years old. Neither one of them have great form but we'll work on it. 2 Quote Link to comment Share on other sites More sharing options...
jchapman Posted June 19, 2014 Share Posted June 19, 2014 Also, tested some smaller steel I bought for my boys. 3/16 CRS at 6 inches - 105 pounds. My oldest son Chris bent this unbraced in my thin suede show wraps. Not bad for a 14 year old but I think he can do better. 11/64 CRS at 6 inches - 70 pounds. My youngest son Eric bent this unbraced at 10 years old. Neither one of them have great form but we'll work on it. Where are you getting this steel? I have a 10 year old and and 8 year old... Quote Link to comment Share on other sites More sharing options...
Tim71 Posted June 20, 2014 Author Share Posted June 20, 2014 Sent you a PM jchap Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.