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Unread 19-01-2017, 09:23
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Re: Toughbox Hex Shaft With Magnet

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Originally Posted by Nick Lawrence View Post
Hi there!

I'm sorry that this hasn't gone together as planned for you. We're currently working on a couple hardware kits (one for encoder mount pad-based gearboxes, one for molded gearboxes) that help relocate the encoder mount points that the SRX Mag Encoder require. These aren't quite ready yet, as we're slowly converting all of our shafts to have this magnet embedded in them. In the meantime, I recommend either purchasing (or making your own equivalent,) spacer from www.aluminumspacers.com, part number #MAS8-5-7. I would also pick up some #10 shim washers from a hardware store, as the magnet placement in the shaft has an approximately 0.025" range of where it seats. The shim washers would let you fine-tune the placement of the encoder. You can check this by looking at the indicator lights inside the SRX mag encoder; it should be green if the encoder and magnet are the correct distance from eachother.

A quick note for all; please do not attempt to machine this magnet or attempt to remove it. It is a tight press fit, and clamping down on it with something like vise grips will result in magnet fragments everywhere.

Sincerely,
Nick
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Unread 19-01-2017, 21:26
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Re: Toughbox Hex Shaft With Magnet

Hello all,

A couple CAD members of 226 worked on designing a 3d printable spacer for the toughbox + am-0801a. Our measurements for the distance between the edge of the magnet and the gearbox were between ~7.8 mm and ~8.4 mm on our test chassis. The CAD can be found here. The spacing is 9.226 mm off of the gearbox, so it should work anywhere from 8.476 mm to 7.726 mm, we highly encourage teams to take measurements for themselves and make edits to our design.
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