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 11-04-2004, 17:31 Post: 99838
les
2004-11-04 17:31:02
Post: 99838
 sickle bar knife rivits

I'm replaceing knives on a sickle bar mower and need some guidence on best way to set solid steel rivits. thanks les






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 11-05-2004, 07:38 Post: 99863
yooperpete



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 sickle bar knife rivits

As a kid, we had an anvil and laid the sickle bar upside down with rivet poking through having rivet head directly on anvil. We would place the blade on top also upside down. Make sure the blade is laying flat and is seated correctly. Usually clean the surface with a wire brush. With a small projection of rivet we would peen it over using the round head of a ballpeen hammer. If the rivet was too long we would shorten it accordingly. Occasionally if we had trouble, we would heat up the rivet tip with a torch. It was a 2 person job the way we did it. Its been about 35 years since doing this! Tractor Supply should have blades and rivets as well as you local tractor dealer. When you put it back together make sure you grease the ball knob generously where the pitman shaft connects.






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 11-05-2004, 07:49 Post: 99864
Murf

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 sickle bar knife rivits

Les, first off, do you have a "rivet set" which is a special little block of very hard steel for riveting.

If not, do yourself a favour and get one, it makes life much easier doing this.

Other than that just do as Yooper said, but be sure you clean everything off well and place the cutter on a stable base, or use a helper or sawhorses, if you start the rivet without having everything flat it will be loose and impossible to tighten, you would have to grind it apart and start over.

Best of luck.






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 11-05-2004, 20:45 Post: 99923
scout180



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 sickle bar knife rivits

I second the rivet set tool....like others here, I haven't set a rivet for many years, but some things never change! The tool looks like a fat, blunt-end cold chisel with a concave center in the business end to shape the rivet into a neat dome. Just keep striking until it's tight. Short of a good old anvil, a piece of railroad iron works. To get the comfort level for aching backs, mount either the rail or anvil on an oak stump....mine is over 50yrs old and solid as day one! At least a 2# hammer is needed.






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 11-05-2004, 22:14 Post: 99930
Art White



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 sickle bar knife rivits

We don't mess with the inconveince of the rivets anymore and actually use special bolts and lock nuts. They come as a kit for most cutterbars as well as by the piece. Still do have a rivet tool just been a long time since it has been used.






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 11-06-2004, 03:25 Post: 99934
harvey



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 sickle bar knife rivits

Art they make little bolts for an old JD5? How about something to replace the wooden pitman arm?






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 11-06-2004, 05:53 Post: 99937
hardwood

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 sickle bar knife rivits

I haven't pounded a sickle rivet in years, but I've still got my rivet tool like has been described. The greatest thing since sliced bread was when they came up with bolt on sections. On combine sickles you sometimes break a section, that used to be a real pain. Now the sections have a tapered hole for the nut that is also the same taper, probably about 45%. All you need is a 7/16ths. wrench a new section and about one minute's time. I remember watching my Dad sharpen sickles on the old tapered sickle stone, he would'nt go to the hay field without a sharp sickle. Frank.






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 11-06-2004, 08:01 Post: 99943
Art White



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 sickle bar knife rivits

Harvey, most all sections take the same rivet diameter. The difference is the length of the bolts. You also might need some higher arch hold downs to clear the nuts on the cutterbar. For the model 5 they do not offer it up as a kit to change over but most dealers have enough kits and sperate bolts to handle it with a quick look at the cutter bar. Now about that wooden pitman#!&*%. That was used as the shear point on those older mowers before they started using the belts to drive with for a slip on the the drive. The prices of them have sky rocketed in the past three decades just because of the small turn over in them.






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 11-06-2004, 18:23 Post: 99964
hardwood

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 sickle bar knife rivits

Art, now I understand why we had a couple requests for pitmans at the furniture shop this summer. We never have a clue what our next request is going to be, guess that's why it's never been a boring job. We're really not looking to get into the pitman business that's just a bit out of our main line products, but I guess if I'd have been a girl I'd have 23 kids by now, I never could tell anybody no. A piece of straight grain ash and a few basic tools will have you a pitman. The holes got be exact or else your sickle will be out of time with the guards. Frank.






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 11-06-2004, 20:04 Post: 99971
Art White



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 sickle bar knife rivits

Frank, some of the different models we've had to out source from the manufacturers parts system to find them. When you have the right tools you can build most anything you can figure out. A jig saw, drill and a circular saw wouldn't get you to far on a pitman!






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Discussion Boards > Active Subjects > Messages as Posted > Field Mowers Brush Cutters Forum

Thread 99838 Filter by Poster:
Art White 4 | hardwood 3 | harvey 2 | les 1 | Murf 1 | scout180 2 | yooperpete 1 |




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