#robotics Logs

Feb 28 2020

10:31 PM Jak_o_Shadows: rue, you wouldn't know the rotor winding for a 24 pole universal motor?
10:37 PM Tom_L: like a fisher & paykel?
10:37 PM Jak_o_Shadows: It's a ryobi edge router
10:37 PM Jak_o_Shadows: trim router
11:10 PM mrdata_ is now known as mrdata
11:35 PM rue_mohr: hu?
11:35 PM rue_mohr: there is a standard?
11:36 PM rue_mohr: I'm sure it depeds on how the brushes are positioned
11:42 PM Jak_o_Shadows: 2 brushes, perpendicular
11:43 PM Jak_o_Shadows: seems like groups of 5 poles are dead shorted together
11:43 PM Jak_o_Shadows: What sort of resistance in the winding?
11:43 PM rue_mohr: I dont know
11:44 PM rue_mohr: I havn't done motor design
11:44 PM rue_mohr: and the few I'v tried to rewind died a horrible death
11:44 PM Jak_o_Shadows: Yeah, rewinding's not on the cards
11:45 PM Jak_o_Shadows: i don't know what's wrong with it. Visually it looks good
11:45 PM rue_mohr: and it wont turn?
11:45 PM Jak_o_Shadows: yup
11:47 PM rue_mohr: https://www.youtube.com/watch?v=xw5yEMsDxR8&feature=youtu.be
11:47 PM rue_mohr: huh lots of ads...
11:47 PM Jak_o_Shadows: https://www.toolpartsdirect.com/ryobi-r70-trimmer.html is it
11:48 PM Jak_o_Shadows: Like, there aint much to go wrong
11:49 PM rue_mohr: is it open or a dead short?
11:50 PM Jak_o_Shadows: across where?
11:50 PM Jak_o_Shadows: Watching https://www.youtube.com/watch?v=lmjFzukDhqI to try to figure out
11:51 PM rue_mohr: wow that a slow moving video
11:52 PM rue_mohr: across the 2 wires of the motor when its all assembeld
11:52 PM rue_mohr: is it open or a short
11:56 PM Jak_o_Shadows: Open
11:57 PM Jak_o_Shadows: and some adjacent commutator things are also open
11:57 PM Jak_o_Shadows: so yeah, the armature is busted apparently
11:57 PM rue_mohr: ok
11:57 PM rue_mohr: you dont ahv a photo eh?
11:57 PM rue_mohr: sounds like you have brush issues
11:58 PM Jak_o_Shadows: Nah, no photo - https://www.toolpartsdirect.com/ryobi-r70-trimmer.html is it though
11:58 PM rue_mohr: its rare for the armature to have issues
11:58 PM Jak_o_Shadows: The brushes are a bit worn.
11:58 PM rue_mohr: yea, I need to see YOURS if I'm gonna spot issues
11:58 PM Jak_o_Shadows: but there isn't really much I can do about that?