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Implement Alley Discussion Forum

rivits vs bolts

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Gary in TX

08-11-2004 13:18:42

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Ok guys, read a post just a bit ago about sickle section rivits. I would not even consider going back to rivits myself as I've been using bolts for quite a few years, they are so much easier to deal with.
How many out there are still using rivits????

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Micheal

08-13-2004 22:25:51

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Re: rivits vs bolts in reply to Gary in TX, 08-11-2004 13:18:42

I have just been considering this pretty heavily this year. I have 5 sickle bars that all have shot sections on them and was contemplating using bolts when i clean the bars and start rebuilding them. What do i need to make the change from rivets to bolts on a Ford 501 running JD universal sickle bars??? Do i need any special guards or clips or anything to provide clearance on the bar???
thaanks for all the excellant info on this board!!!
Micheal

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Ken Macfarlane

08-12-2004 05:11:14

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Re: rivits vs bolts in reply to Gary in TX, 08-11-2004 13:18:42

The 489 we use is bolted. Takes just moments to change, didn't find any loose. The damaged knife we had was on the far right, the one with 2 teeth and one tooth broke off it. Bolts held fine.

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Adam B.

08-11-2004 21:52:48

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Re: rivits vs bolts in reply to Gary in TX, 08-11-2004 13:18:42

Got rid of the whole shot and use disk mower-conditioners now.

However, before we made the switch to disk, we first switched from rivets to bolts on our NH 489 mowers. We had about eight sickle bars made up and ready to be swapped on in case of an emergency. Usually, each machine would wear out two sets of knives every year unless something serious happened and required a premature replacement. The used up sickle bars would pile up until winter or some rainy day, then it'd be about half a day to rebuild them all with rivets. Then we got some of the bolts and it wasn't a chore anymore. Changing in the field often would only take a few minutes. With an air ratchet in the shop, changing all the knives on a bar could be done in about 15-20 minutes. The nuts wear down, but we typically got three seasons out of a set of nuts and bolts. After that, the nuts would be so rounded off that they couldn't be reused and we'd pop new bolts in the bar. I'm definitely a believer in the bolt-on knife sections.

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Don-Wi

08-11-2004 20:36:11

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Re: rivits vs bolts in reply to Gary in TX, 08-11-2004 13:18:42

We are still using rivets too. We have extra sickles so there really isn't anydown time other than the 1/2 hr it takes to change sickles. We have a whole crap load of rivets around, and I really don't have any problems putting them in. Lay the sickle on an anvil and choose your favorite hammer, mine's an old 12 oz. ball-pein. We have a punch that's got a rounded dimple in it that we use to pound the head down, makes it nice and rounded like factory. We also have the rivet tool that takes a wrench, but we hardly ever use it.
Donovan from Wisconsin

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Tim Shaw

08-11-2004 19:31:58

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Re: rivits vs bolts in reply to Gary in TX, 08-11-2004 13:18:42

We're still using rivets but I did break down and start using bolts for the sickle head. We have had a Johnson Sickle Servicer for years and use it to punch out and replace sections or even make complete new sickles.

Johnson Sickle Servicer

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Unimog

08-11-2004 19:21:28

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Re: rivits vs bolts in reply to Gary in TX, 08-11-2004 13:18:42

I'm still using rivets with a Smith Tool for putting in the replacements. No problems and
cheap. I helped a friend with the bolts and nuts
and they don't seem to work too bad, but I can
replace a rivet almost as fast so I'll stick with
them on my PT-7.

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Allan in NE

08-11-2004 18:08:20

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Re: rivits vs bolts in reply to Gary in TX, 08-11-2004 13:18:42

I can't figure out how you guys with the wrenches get the bolts to "swell" like they've got to be to hold properly as they should.

There's a reason sections are held on with rivets; they swell. What's the use of using bolts when your doing the job twice as often?

I just don't get it.

Allan

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paul

08-11-2004 23:48:36

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Re: rivits vs bolts in reply to Allan in NE, 08-11-2004 18:08:20

The bolt has a fluted, or star shape to it, you need to draw it into the hole, it 'swells' just fine that way.

The bolts take quite a bit of torq, they clamp down real tight and hold good.

--->Paul

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Tim(nj)

08-11-2004 21:11:06

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Re: rivits vs bolts in reply to Allan in NE, 08-11-2004 18:08:20

Go get a few section bolts and nuts and put them on your mower next to the rivets. If you use the star-shoulder bolts and tapered lock nuts designed specifically for this use, the sections will be just as tight as the rivetted sections and will stay that way.

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Sid

08-11-2004 18:32:47

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Re: rivits vs bolts in reply to Allan in NE, 08-11-2004 18:08:20

The bolts that I us have a dome shaped nut. I put the dome down and it fills in the section hole. I have no more problems with loose sections than I did before. They work great for me.

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Sid

08-11-2004 18:32:14

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Re: rivits vs bolts in reply to Allan in NE, 08-11-2004 18:08:20

The bolts that I us have a dome shaped nut. I put the dome down and it fills in the section hole. I have no more problems with loose sections than I did before. They work great for me.

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RayP(MI)

08-11-2004 18:01:07

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Re: rivits vs bolts in reply to Gary in TX, 08-11-2004 13:18:42

I'm having a hard time understanding how you guys with the bolts keep the sections on the bar. I'm suprised they don't shake loose 'bout every round. What am I missing here? My fields are rough, full of short fine grass and plenty of mole hills with stones in them. Spend lot of time on sickle bar upkeep, tightening rivets, replacing damaged sections, etc.

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Nebraska Cowman

08-12-2004 18:20:42

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Re: rivits vs bolts in reply to RayP(MI), 08-11-2004 18:01:07

they use lock nuts and the the shank of the bolt is flutted to fit tight in the hole. I've used bolts and hated them. They are hard to get in and out and I'll stick to rivets thank you.

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thurlow

08-13-2004 07:00:34

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Re: rivits vs bolts in reply to Nebraska Cowman, 08-12-2004 18:20:42

I "modified" one of the portable riveting tools.....you know the kind, about the size of a small book with a screw press on each end. It easily and quickly presses the bolts in and out.

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Ken Macfarlane

08-13-2004 07:39:37

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Re: rivits vs bolts in reply to thurlow, 08-13-2004 07:00:34

We've never had to take a bolt out before? So far we've just popped the nuts off and changed stuff.
Ken

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Jerry D in NC

08-11-2004 16:45:54

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Re: rivits vs bolts in reply to Gary in TX, 08-11-2004 13:18:42

I have just finally switched out the last rivet to bolts on the 1207 I run. I never plan to use another rivet if I can help it. Big difference in having a 7/16ths wrench and a needing a big hammer and something solid to back it up

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