pickup magnet - RC Groups
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Nov 07, 2017, 10:36 AM
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Help!

pickup magnet


Im looking to get the pickup magnet on the prop hub replaced on gas engines.
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Nov 07, 2017, 11:07 AM
Registered User
Better to buy a new timing hub if you can. If not, I've drilled them out. It's a real pita. I had to center punch the magnet to make a starting point, then start with a smaller drill bit. Going straight to the correct size will likely make the bit wonder and ruin the hole. MAKE SURE YOU GET THE POLARITY RIGHT. I used JB weld to make sure it stayed in place. You can buy ignition test kits to check the sensor and the module. I find it pretty handy and worth the money. Good luck.
Edwin
Nov 07, 2017, 03:57 PM
Registered User
I use to be a pick up magnet when I was young . Not so much any more !
Nov 07, 2017, 06:06 PM
Mumbling in the corner.
flyboy2610's Avatar
Quote:
Originally Posted by the pope
I use to be a pick up magnet when I was young . Not so much any more !
What was once sleek and sporty is now meek and forty!
Nov 07, 2017, 06:26 PM
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earlwb's Avatar
If the engine is relatively current, then they used a tiny neodymium magnet. it is quite brittle. You can use a pointed punch to break it up and fish the pieces out. Then you can glue in a replacement magnet. They sell the magnets on Ebay and other sources. But you usually wind up having to buy a number of them.

What is wrong with the existing timing magnet? Is this the old magneto magnet on a flywheel?
You can get the flywheel remagnetized at those shops that do it still.
Nov 07, 2017, 09:15 PM
Registered User
It fell out and lost it.
Nov 08, 2017, 10:56 AM
Registered User
Quote:
Originally Posted by earlwb
If the engine is relatively current, then they used a tiny neodymium magnet. it is quite brittle. You can use a pointed punch to break it up and fish the pieces out. Then you can glue in a replacement magnet. They sell the magnets on Ebay and other sources. But you usually wind up having to buy a number of them.

What is wrong with the existing timing magnet? Is this the old magneto magnet on a flywheel?
You can get the flywheel remagnetized at those shops that do it still.
I looked on Ebay but didn't find it do you have a link for the right one?
Nov 08, 2017, 01:32 PM
AMA 46133
Quote:
Originally Posted by Aerogasrc
I looked on Ebay but didn't find it do you have a link for the right one?
http://www.kjmagnetics.com/categorie...FWQ6QgodozAAuw

They have all sorts of magnets available. If it is a 3mm metric size you can probable open up the pocket to .120", clean up the hole a little and press fit a 1/8" diameter magnet with some JB Weld.
Nov 08, 2017, 05:46 PM
Registered User
earlwb's Avatar
Quote:
Originally Posted by Aerogasrc
I looked on Ebay but didn't find it do you have a link for the right one?
I do not know the hole size for the one you have lost.
https://www.ebay.com/sch/i.html?_fro...gnets&_sacat=0

But there are numerous small magnets there on Ebay.
for example
https://www.ebay.com/itm/100pcs-VERY...IAAOSw5UZY-gqd

https://www.ebay.com/itm/3mm-x-2mm-T...v5pttlduMAWFCQ

https://www.ebay.com/itm/100-500-Sma...PbzjYwRsg-GNFg

https://www.ebay.com/itm/20pcs-Disc-...MAAOxymspSEvEj

it goes on and on


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