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Post by dave632 on Mar 22, 2019 8:14:26 GMT -7
Thought I would show some readings I took off of some pancake magnets with my gauss meter. Starting off with some old stock T jet type magnets followed by some of the larger stock AFX type, then Dash ceramic, then some poly magnets. The neos, (not shown), measure about double what the Poly's read and I have yet to find them useful in any car. The old T jets read about half of the AFX and Dash ceramics read with the poly's reading almost double what the AFX read.  Old T jet
 AFX
 Dash ceramic
 Poly |
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Post by AJR on Mar 22, 2019 8:43:05 GMT -7
Good info. and I like the gauss meter. Where did you get that?
I've seen you mention neos several times. I have only had a couple of builds that I have ever used them in. They just don't have a place unless it is an unlimited type build......and those need voltage and amperage. 24v minimum. My 4 gear FED's run at 26v (I don't run above that). I have had both in the mid .4's. Now that I have a gear set up that will take the abuse, I added neos to one of them and it took me to low .4's.....bumping the .3 mark. That was with a 3.4ohm arm). I have a couple of "bad boy" arms that will see those neos. I will get into the .3's. So the neos do have a place.....it's just in a place that we don't see here on the forum very often anymore....the world of 24v - 26v.
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Post by Deleted on Mar 22, 2019 10:06:49 GMT -7
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Post by dave632 on Mar 22, 2019 18:06:48 GMT -7
I bought gauss meter several years ago for 175.00. I don't think they are making them any more, don't know why. I have found neo magnets do not work well even with 1 ohm arms, just to much magnet strength. Mine read in the 3500-4500 range or about 4 times what a Dash ceramic reads.
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Post by gibbo61 on Jun 7, 2019 6:10:36 GMT -7
I found this kit to make one using your voltmeter and a usb power source. I ran across it doing a search.It looks like you will have to do a little extra work to figure your  readings , but it comes with a chart and they have a link to a calculater for the readings you get off your voltmeter.Gotta go to the ny modifieds website to e-mail the guy for the price of the kit |
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Post by AJR on Jun 7, 2019 7:14:45 GMT -7
I found this kit to make one using your voltmeter and a usb power source. I ran across it doing a search.It looks like you will have to do a little extra work to figure your readings , but it comes with a chart and they have a link to a calculater for the readings you get off your voltmeter.Gotta go to the ny modifieds website to e-mail the guy for the price of the kit Very interesting. I may have to look into that. Thanks for the info. |
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Post by ecbill on Jun 7, 2019 15:28:03 GMT -7
Bought one of those a while back. Seems to work pretty well. Cost $20. www.nymodifieds.com/Make sure your USB power source is putting out full voltage. 1st one I tried was only 2.5v and it threw all readings off. Not sure if it reads actual gauss reading of mags but does give you a means to compare magnetic strength or various magnets. |
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Post by GTS on Jun 8, 2019 5:09:06 GMT -7
Bought one of those a while back. Seems to work pretty well. Cost $20. www.nymodifieds.com/Make sure your USB power source is putting out full voltage. 1st one I tried was only 2.5v and it threw all readings off. Not sure if it reads actual gauss reading of mags but does give you a means to compare magnetic strength or various magnets. Bill, have you found yours to be fairly consistent in it's readings? I've used the little HF scale w/plastic cover for the past few years. It works but seems to vary from day to day. These kits certainly appear to be affordable and visually, a little easier to use.
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Post by ecbill on Jun 8, 2019 7:36:29 GMT -7
It varies a good bit depending on where you place it on the magnet. Consistency will depend a lot on the consistancy of the operator. Only used it a few times so far, so I'm just learning. It seems like you should be able to get reliable results.
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Post by AJR on Jun 8, 2019 10:53:51 GMT -7
Bought one of those a while back. Seems to work pretty well. Cost $20. www.nymodifieds.com/Make sure your USB power source is putting out full voltage. 1st one I tried was only 2.5v and it threw all readings off. Not sure if it reads actual gauss reading of mags but does give you a means to compare magnetic strength or various magnets. Bill, have you found yours to be fairly consistent in it's readings? I've used the little HF scale w/plastic cover for the past few years. It works but seems to vary from day to day. These kits certainly appear to be affordable and visually, a little easier to use.
I am not familiar with how nymodifieds unit works, but for $20 bucks it's hard to beat. Gale you referenced using the Harbor Frieght digital scale not being accurate. I have been using that method for the last 5 -6 years and have found it to be very consistent. Are you placing the magnets in the same place on the plastic cover each time? You will get inconsistent readings if the magnets are placed in different areas. I have two lines drawn on my cover that marks where to place the magnet. This obviously does not measure the gauss reading, but matching the magnets is the only thing that concerned me. I thought I would bring that up just in case that might help. |
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Post by AJR on Jun 8, 2019 12:03:24 GMT -7
What a cool site the nymodifieds is. I really appreciate the input from everybody here. I don't think I ever would have found this site and so many others if it wasn't for the input on this forum over the years. I need to go back through my Bookmarks and see what I've forgotten......lol.
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Post by gibbo61 on Jun 9, 2019 18:44:34 GMT -7
I was pretty much looking for anything to do with slot cars when I happened upon it. I totaly agree with the help received from this forum. It has really helped me get '' back in the groove ''
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Post by GTS on Jun 18, 2019 13:15:05 GMT -7
Bill, have you found yours to be fairly consistent in it's readings? I've used the little HF scale w/plastic cover for the past few years. It works but seems to vary from day to day. These kits certainly appear to be affordable and visually, a little easier to use.
I am not familiar with how nymodifieds unit works, but for $20 bucks it's hard to beat. Gale you referenced using the Harbor Frieght digital scale not being accurate. I have been using that method for the last 5 -6 years and have found it to be very consistent. Are you placing the magnets in the same place on the plastic cover each time? You will get inconsistent readings if the magnets are placed in different areas. I have two lines drawn on my cover that marks where to place the magnet. This obviously does not measure the gauss reading, but matching the magnets is the only thing that concerned me. I thought I would bring that up just in case that might help. Jeff, I do try to be consistent with the placement. I have my plastic cover marked so as to help me place it in the same spot & direction each time. It works really well when measuring magnets that day. It's when I re-measure them a few days later that they seem to vary a bit, no big deal  . Regardless, I purchased one of the units from NYModifieds . It arrived today. Could be a few days before I get a chance to check it out but when I do, I'll post my personal opinion of it here in this thread. Anxious to give it a whirl  . Ron at NYModifieds was extremely easy to deal with  . |
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Post by AJR on Jun 20, 2019 13:09:11 GMT -7
Thanks Gale. I look forward to your findings with the NYModifieds unit.
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Post by GTS on Jun 23, 2019 18:50:00 GMT -7
Had a little time to dink around with the NY Modifieds Magnet/Gauss Meter today. I'm impressed. The instructions & web site led me to believe that the voltage reading (base reading) from the USB port was supposed to be around 2.5 volts. Mine read 2.52 vdc. The tip of the element that does the reading is only about an 1/8" square x 1/16" thick. I got the best readings when placing the tip on the outside circumference of the magnet in the center (from top to bottom). Once finding the sweet spot I squeezed it tight against the magnet with thumb and index finger to get consistent readings. I used the online calculator at his web sight as most of the magnets I tested did not have a reading that went that high on the included chart. I don't think the included chart was really made for HO magnets but I'm just guessing. For me, it seemed to be really repeatable in the accuracy department, ymmv. This coming week should allow for some more free time and plan to go thru all my pancake cars and do some measuring & testing. I'll report back with some more documentation and pictures. Like I said, I'm impressed and am pretty sure this will become a "go to" tool for me in the future. Anxious to match some magnets  . |
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. Ron at NYModifieds was extremely easy to deal with 
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