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MaxAdventure
05-15-2010, 04:01 PM
I have a ZPower Z50 780KV motor (century branded) that I cracked a magnet in either in a crash or when I was pulling things apart after the crash. I'm having trouble finding a replacement magnet, does anyone know of a source?

The catch:
I have found a lot of magnet sources, but NONE this dimension-

1/16 ~= 2mm
5/16 ~= 8mm
1 3/16 ~= 30mm

I figure I have four options, and I'd like to keep costs down
1)replace the motor (expensive)
2)glue the magnet back together (how much efficiency loss?)
3) replace every other magnet with something nearly the same size (how much efficiency loss?)
4) put two smaller magnets that add up to the correct dimension (will this even work? how much loss?)

I have found I can order custom neodymium magnets, but again at what crazy cost?

any ideas/suggestions?

Cdr. Instigator
05-15-2010, 06:18 PM
Have you tired these guys..

http://www.magnet4less.com/?gclid=CJTRptbS1KECFQrxDAodBmAN2Q

MaxAdventure
05-15-2010, 09:17 PM
Have you tired these guys..

http://www.magnet4less.com/?gclid=CJTRptbS1KECFQrxDAodBmAN2Q

yes, I've tried them and several other large suppliers, the closest they have is this:
1" x 1/4" x 1/16"

http://www.magnet4less.com/product_info.php?products_id=400

Which is smaller width than what's cut in the aluminum end bell for alignment on the Z50 motor. I think the metric dimensions are the closest, but my digital calipers read they were just under the metric.

CHELLIE
05-16-2010, 04:30 AM
I have a ZPower Z50 780KV motor (century branded) that I cracked a magnet in either in a crash or when I was pulling things apart after the crash. I'm having trouble finding a replacement magnet, does anyone know of a source?

The catch:
I have found a lot of magnet sources, but NONE this dimension-

1/16 ~= 2mm
5/16 ~= 8mm
1 3/16 ~= 30mm

I figure I have four options, and I'd like to keep costs down
1)replace the motor (expensive)
2)glue the magnet back together (how much efficiency loss?)
3) replace every other magnet with something nearly the same size (how much efficiency loss?)
4) put two smaller magnets that add up to the correct dimension (will this even work? how much loss?)

I have found I can order custom neodymium magnets, but again at what crazy cost?

any ideas/suggestions?

Its going to be almost impossible to find a replacement mag for your motor, best thing is to buy another motor of the same type, and keep your motor for spare parts, mags, bearings, shaft etc, incase of a crash, Just my 2 cents worth, Take care, Chellie

littlescreamers
05-18-2010, 04:56 PM
I would try this guy. He has been around the longest and helped a lot of us starting out.

http://www.supermagnetman.net/

Scott

ron_van_sommeren
05-21-2010, 08:50 AM
Or www.supermagnete.com

Vriendelijke groeten ;) Ron van Sommeren
int. electric fly-in (http://home.kpn.nl/ronvans/), Nijmegen, Netherlands
brushless motor building tips & tricks (http://www.rcgroups.com/forums/showthread.php?t=240993)
diy brushless motor (http://www.yahoogroups.com/group/lrk-torquemax) discussion group