Sump magnets - Kawasaki KLR 650 Forum
1987 to 2007 Wrenching & Mods For maintaining, repair or modifications of Generation 1 KLR's. 2007 and earlier.

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post #1 of 20 Old 02-03-2016, 12:30 PM Thread Starter
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Sump magnets

Rather than bother with placing magnets in the drain plug and oil filter, why not just poke these down the oil filler and they will go around and pick up all the loose metal. They can be drained out and washed every oil change. :-)

100PCS 3mm x 1mm N35 Rare Earth Neodymium Super Strong Magnets - US$1.49
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post #2 of 20 Old 02-03-2016, 02:53 PM
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The engine case is aluminum alloy so they won't stick to that. But they WILL stick to something. Hope it's not a transmission gear or the crankshaft.

They may be strong enough that if you stick it to something benign that it won't jar loose. But the cost of being wrong in that bet is pretty high.

Last edited by Grinnin; 02-03-2016 at 03:03 PM.
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post #3 of 20 Old 02-03-2016, 08:44 PM
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Quote:
Originally Posted by Normk View Post
Rather than bother with placing magnets in the drain plug and oil filter, why not just poke these down the oil filler and they will go around and pick up all the loose metal. They can be drained out and washed every oil change. :-)

100PCS 3mm x 1mm N35 Rare Earth Neodymium Super Strong Magnets - US$1.49
Holy sh** Normk,
My suggestion would be to glue a few (J-B WELD) to the bottom of the sump. And then IGNORE them for a hundred thousand miles!
Any broken 'doo-hickey spring' or 'minute' gear chip would stay attached above one of the magnets and Not Bounce up into harms way of the transmission gears..

Almost unbelievable price tag! Did you order some???

pdwestman
Modify at "YOUR OWN RISK"!

Still riding my 1987 KL650-A1. 85,000+ miles & counting
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post #4 of 20 Old 02-03-2016, 09:00 PM Thread Starter
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There seems to be nothing which can be posted to a bike group which people will consider too outlandish to be serious. :-)

I thought it was obvious that it would never work because most debris is aluminum and magnets won't attract aluminum.






Quote:
Originally Posted by pdwestman View Post
Holy sh** Normk,
My suggestion would be to glue a few (J-B WELD) to the bottom of the sump. And then IGNORE them for a hundred thousand miles!
Any broken 'doo-hickey spring' or 'minute' gear chip would stay attached above one of the magnets and Not Bounce up into harms way of the transmission gears..

Almost unbelievable price tag! Did you order some???
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post #5 of 20 Old 02-04-2016, 04:45 AM
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FWIW, I heard the Russians were exporting nuclear waste to China where the radioactive pellets are coated with a magnetic paint and then sold for next to nothing through international wholesale auction sites.

Bottom Line? They probably don't work as well as advertised. I'd avoid them. Neodymium my ass.



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post #6 of 20 Old 02-04-2016, 04:03 PM
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The problem with something that is obviously meant jokingly is that the joke may not be obvious to all.

I worked in a motorcycle shop that used to be a lawnmower shop while in college. Some guy call the shop and said he couldn't fine the radiator cap on his mower and wanted to know where to put the antifreeze. The counter guy jokingly told him to mix it 50/50 with the oil. Can you see where this went?
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post #7 of 20 Old 02-04-2016, 04:12 PM
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Quote:
Originally Posted by pdwestman View Post
Holy sh** Normk,
My suggestion would be to glue a few (J-B WELD) to the bottom of the sump. And then IGNORE them for a hundred thousand miles!
Any broken 'doo-hickey spring' or 'minute' gear chip would stay attached above one of the magnets and Not Bounce up into harms way of the transmission gears..

Almost unbelievable price tag! Did you order some???
Two thoughts on that idea - one GOOD one BAD.

GOOD. Super strong magnets on the bottom of the sump could catch the nails that the front tire throws up before the rear tire catches them.

BAD. If they are supper strong, what happens when you cross a rail road track?
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post #8 of 20 Old 02-04-2016, 04:51 PM Thread Starter
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It is amazing how these things can go but I do like to test the waters from time to time. :-)

Two concepts which constantly impinge on my experience with the web are: The Dunning-Kruger Effect, and Poe's Law. They overlap in many ways which blurs the line but it seems that there is almost nothing too out of credibility to be accepted by those who know little or nothing about some field. We don't seem to begin with the premise "this is a complicated subject about which I know almost nothing", but rather plow ahead with a degree of conviction inversely proportional to our ignorance.

Oh, well. Time to do some chores and then try the next crankcase venting experiment, in full knowledge of the fact that my degree of ignorance remains virtually unaffected by almost 60 years of experience with the subject. :-)







Quote:
Originally Posted by GoMotor View Post
Two thoughts on that idea - one GOOD one BAD.

GOOD. Super strong magnets on the bottom of the sump could catch the nails that the front tire throws up before the rear tire catches them.

BAD. If they are supper strong, what happens when you cross a rail road track?
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post #9 of 20 Old 02-04-2016, 05:22 PM
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Quote:
Originally Posted by Normk View Post

I thought it was obvious that it would never work because most debris is aluminum and magnets won't attract aluminum.
Normk,
I disagree about the debris being mostly aluminum.
I'll suggest normally it is from the cylinder wall, driven clutch plates and a little bit of gear dog.
My last 5000 mile oil change. Aluminum 18ppm / Iron 30ppm.

GoMotor,
Have you had a traffic light sensor snag you at a R/R crossing?

pdwestman
Modify at "YOUR OWN RISK"!

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post #10 of 20 Old 02-04-2016, 06:58 PM Thread Starter
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You may be right about the clutch material but that's a dead end as my supplier has aluminum magnets on back order but tell me that they are unable to supply clutch lining magnets. I might put some Duct pieces into the oil filler to see if the clutch plate material will stick to them. If not perhaps I can paint the clutch plates with an iron oxide so the clutch material will stick to magnets.

From your oil test it seems that one needs about twice as many iron magnets as aluminum ones. That's good because aluminum magnets are harder to find.



Quote:
Originally Posted by pdwestman View Post
Normk,
I disagree about the debris being mostly aluminum.
I'll suggest normally it is from the cylinder wall, driven clutch plates and a little bit of gear dog.
My last 5000 mile oil change. Aluminum 18ppm / Iron 30ppm.

GoMotor,
Have you had a traffic light sensor snag you at a R/R crossing?
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