525 magnets

[pondlife]

chaps, had a bit of an accident with me penn 525 a few weeks ago. anyway, it wasnt running right so i started to strip it down. no sooner had i got the side plate off and i could see one of the four magnets had come out its housing and was stuck to one of the others. well, it would appear that the four magnets are fitted opposing each other alternately.i stuck them back in that way and tried me reel out today. it seems ok but can anyone confirm this and out of general interest, non of the magnets stick to the spool so what do they act upon to cause the spool to brake.

 

[Gaverick]

Yep the magnets go in opposing their neighbours so -+-+ OR +-+-.

The braking effect is caused by electromagnetic induction between the magnets and spinning spool which causes a force opposite to the spools rotation causing it to slow down.

 

[pondlife]

mm

mm

i didnt try to see if the spool would electricaly conduct. if so then i would imagine basic motor principals would apply , farradays law, back emf's, flux conductors and 90 degree current inducing polarising may play a part.

 

[g-force]

Have a google on "Lenz's Law" for the full-on explanation. I think the magnets are supposed to go "+ - + -" if using four, although I know people who've had them all "+ + + +" or "- - - - " without noticing any difference. After all, a mono-mag, like the 535 for example, only presents one magnetic pole towards the spool.

Gary

 

[Rod]

The magnets in my supermag are all + + + + and it seems well overbraked compared to an original 525 i used to own.Have ro cast with the setting on 3 where i could not get below 5 on the original 525 and thats on rocket fuel,anyone think i should swap them around?

 

[zippie]

have you removed the magnets under the carrier

 

[megmoss]

i didnt try to see if the spool would electricaly conduct. if so then i would imagine basic motor principals would apply , farradays law, back emf's, flux conductors and 90 degree current inducing polarising may play a part.

That takes me back pondlife.....used to hate electrical principles at college.:red:

 

[pondlife]

elec theory

elec theory

me aswell.
thanks to all who replied to this thread

 

[Rod]

Yes magnets under carrier are gone Zippie.Might have a bit experimenting.