cbaker65
RCTalk VIP
OK, I busted my butt all day again today on this but i think its finally finished. I managed to cut my entire yard with it today although it took all day cuz every time I turned around something was messing up on the mower. Id have to fix/redesign something seemed like everytime I turned around but I believe I finally got her sturdy enough to take the abuse.
So I started by taking the brakes off the motors. The piece on the end is the electromagnet that drives the brake. The black ring you see sandwiched in between the motor and the brake magnet is the brake disk itself.
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Heres what the motor looks like with the brake pad and the brake magnet removed.
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Heres the entire brake assembly
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Heres the brake assembly torn down in to its individual pieces.
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The brake disks
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When you remove the brake disk and you try to put the assembly back together theres a gap and I didnt want dirt and contaminates getting in there so I fashioned some crude spacers out of a piece of subflooring I had laying around. I drilled holes for the screws and I drilled out the centers to make room for the hex that is supposed to lock in to the brake pad.
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and finally the brake assemblies all put back together and ready to go back on the motors.
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Ok, so then I thought I was all set but shortly after I started trying to mow my lawn with it all the pot holes, sticks, stones etc started to take its toll on the front wheels and they were starting to bend backwards. Bear in mind that this thing probably way 65-75 lbs. so hitting bumps is really hard on the much smaller front wheels. Next redesign I'm going for bigger caster wheels in the front. Might look in to those ones that someone earlier in the thread said were specifically for lawnmowers. At any rate here it is after I re-enforced the crap out of the front
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Next I'm gonna work on making some vinyl decals for the side of her that say "Lawntoy 2.4Ghz"
And last but not least, heres the video yall have been waiting to see. Bear in mind that this running video was shot before I re-enforced the front so right toward the end of the vid if you see the front wheels looking like they are pushed back a bit,....well now you know why
Oh and just incase anyone is curious I'm jumping up to running four 4S 5000+mah Lipos. With 20Ah of capacity that will be enough to mow my 1/3 acre lawn. 10Ah was enough to do my front yard (65% of my lawn). I might be able to get away with 15Ah but I dont want to chance it since I have no LVC or telemetry on this.
Great stuff ,I take it ,your retiring from mowing your yard?...
But seriously ,you did an awesome job on it!......