Claas/Sunnybrook zero degree (ZAPS) research - Page 20 - The Combine Forum
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post #191 of 207 (permalink) Old 08-30-2019, 12:57 AM
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Well the same argument for the zero's grabbing crop more positive would stand true for rocks as well. Stones are pretty much a non issue here but the odd one I've found in the trap was glad it was there and didn't find its way through the rest of the machine.

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post #192 of 207 (permalink) Old 08-30-2019, 08:18 AM
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I have bent multiple cap stands back, but never the drum. You can buy new cap stands but I have always straightened mine. With heat, they can be pulled around to get them 98% straight. Claas uses some very high tensile metal here. They hammer extremely hard without heat, and I have seen a few of them develop cracks. That one should be fixable for sure.

For that drum, I would probably heat the drum on the outer edge of the dent and pull out with a come-a-long, hooked to the cap stand. I would take an original Claas cap and weld a chain hook on it. Then bolt that up to the pictured stand. Put a large washer on the back side of the stand so when you pull on it, you dont pucker the metal out.

I don't like welding on machines unless necessary, and I think with some heat and manipulation, this could be fixed.

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post #193 of 207 (permalink) Old 08-30-2019, 08:23 AM
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SWMAN, have you been able to increase performance from where you were a few days ago?


Has anyone installed a front feeder drum upper stop to reduce foreign ingestion? Our 2388 had an upper and lower feeder drum travel limiter. It was effective but the Claas only has a lower height adjustment. I think if the drum was prevented to raise, some of these items would never enter.
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post #194 of 207 (permalink) Old 08-30-2019, 09:38 AM
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SWMAN, have you been able to increase performance from where you were a few days ago?
Have not run since peas, wheat won't be limited by the APS so I loosened the belt off again...ha ha

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post #195 of 207 (permalink) Old 08-30-2019, 10:36 AM Thread Starter
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Have not run since peas, wheat won't be limited by the APS so I loosened the belt off again...ha ha
Iíve had the threshing belt slip warning several times but it has never shut the feeder off, lowest sensitivity, havenít adjusted belt yet either.
Nor, come to think of it, have I set slip rates from standard, hmm..
What % you use?

I miss staggered rasp bars.
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post #196 of 207 (permalink) Old 08-30-2019, 07:37 PM
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Iíve had the threshing belt slip warning several times but it has never shut the feeder off, lowest sensitivity, havenít adjusted belt yet either.
Nor, come to think of it, have I set slip rates from standard, hmm..
What % you use?

I miss staggered rasp bars.
7.5% standard, I changed to 10%. Did not make much of any difference.

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post #197 of 207 (permalink) Old 08-30-2019, 08:30 PM Thread Starter
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7.5% standard, I changed to 10%. Did not make much of any difference.
Same but mine set at 5%.
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post #198 of 207 (permalink) Old 09-04-2019, 11:54 PM
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Have a concern with the ZAPS and rocks.

Had one tonight that got wedged right at the rock trap and APS. Was on the machine my dad was running. Combine went in to all drives stopped stall and kicked out the seperator drive. All we could find was a few rocks in the rock trap that fell out right away, one of them was a two fister size. I am only speculating that the rock wedged right at the aps and the rock trap ledge, as nothing else would have caused the stall. We rolled over the combine by hand after the rock removal, then fired up and all was fine.

I am thinking the backswept design of the original APS caps would "bitchslap" the rocks deeper into the trap. Worse crop feeding with the same stock backswept design.

We can go through anything with the ZAPS, feeds the machine way better. But as a few guys have posted better feeding may have the same effect with rocks.

Was dark out when so we shut down, I'll see if I can post a picture in the morning of anything that looks out of line.
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Last edited by drylandfarmer; 09-04-2019 at 11:57 PM.
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post #199 of 207 (permalink) Old 09-07-2019, 02:25 PM
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Has anyone had issues with the zaps rubbing on the back/top feeder house cover when fully raised? While learning the header just before it was fully raised they started hitting this cover. Scared the crap out of me! Removed cover and determined that’s what the noise was. Learned the header and put back on. Not a big deal just curious.
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post #200 of 207 (permalink) Old 09-07-2019, 05:42 PM
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Has anyone had issues with the zaps rubbing on the back/top feeder house cover when fully raised? While learning the header just before it was fully raised they started hitting this cover. Scared the crap out of me! Removed cover and determined thatís what the noise was. Learned the header and put back on. Not a big deal just curious.
Ha ha ha, welcome to the club!

That happens even with regular APS caps.


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