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Spring Tooth Harrow

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Pete

09-18-2000 10:47:29




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The spring teeth on my harrow are just about all worn out. They don't dig very deep any more. I've adjusted them as much as they can be adjusted but, they have just been worn down too much. At $15 apiece for new springs I was hoping for a cheaper solution. Thought of adding new "tips" (I can't think of the right name just now) but, you have to bolt the tips on to the spring ends. The springs on the harrow don't have any holes drilled in them and drilling 40 holes in such strong steel seems like it would take a long, long time.
Any ideas? Could I heat the springs and punch holes in them any easier/faster than drilling?

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valvejob

09-20-2000 23:53:39




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 Re: Spring Tooth Harrow in reply to Pete, 09-18-2000 10:47:29  
Punching the holes would be easiest by far, there is no need to heat them, avoid heat it will destroy the spring temper. Spring steel is fairly easy to stamp, go to a local fabricating shop that has an iron worker (universal punching and shearing machine) they should be able to set up and punch 40 holes quickly. 30% of stock thickness per side punch to die clearance is optimum for spring steel, 10% will work. They may even have a square punch set to receive the flat head bolts used on shovels. You could drill them with carbide but the cost of the drill would probably be more then the punching fee. Carbide drills also break very easily if you are not used to them.

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paul

09-18-2000 18:49:09




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 Re: Spring Tooth Harrow in reply to Pete, 09-18-2000 10:47:29  
Ok, everyone else seems to know what you are talking about? Around here a spring tooth harrow is like a drag, it has springy little points on it, like side rake teeth.

What it seems every one else is talking about is what we call a field cultivator? And yours does not have replacable sweeps?

Go ahead & try, but heating spring steel will cause it to either soften & bent or crystalize & break on your first round (my experience at least) and drilling a few dozen holes in that stuff will cost you about $15 bucks per in drill bits & knuckle bandages.

Sorry, no good solution I know of.

--->Paul

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Cal S.

09-18-2000 17:32:24




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 Re: Spring Tooth Harrow in reply to Pete, 09-18-2000 10:47:29  
Pete,
You might be able to recover some of the cost by selling the old ones on the board at keenjunk.com. blacksmiths and knifemakers are always hunting for these items.



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TomH

09-18-2000 17:21:35




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 Re: Spring Tooth Harrow in reply to Pete, 09-18-2000 10:47:29  
If you can get the new points for a reasonable price it might be easiest to just weld them on. The springs you have now are worn out anyway, if a welded point breaks off replace it with a new spring.



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it's a horse apiece

09-18-2000 12:11:57




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 Re: Spring Tooth Harrow in reply to Pete, 09-18-2000 10:47:29  
by the time you buy 20 shovels (the correct name) and 40 bolts, nuts, and lock washers and drill 40 holes (the drilling will be very difficult) you could have the whole job done with new spring tooth shanks and have about the same money in the job.



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