#garfield Logs

Nov 06 2020

03:05 PM aandrew: no wonder this fan is so fucking expensive: https://imgur.com/a/T1IVijg
03:11 PM aandrew: there's $10 in packaging alone
07:25 PM aandrew: nice, they found my car: https://i.redd.it/dlkujimihox51.jpg
07:47 PM rue_mohr: gonna give it some extra speed
07:47 PM aandrew: well it'll drive the fuel efficiency up, motor won't have to turn as fast
07:47 PM rue_mohr: I cant tell how they are attached to the rims
07:48 PM rue_mohr: esp if towing it witha horse...
08:05 PM aandrew: the big wheels help the horse too... it doesn't have to rotate as fast either :-)
08:19 PM rue_mohr: :)
09:18 PM Tom_L: yt to come
09:26 PM Tom_itx: https://www.youtube.com/watch?v=rX4eP3QLwo0&feature=youtu.be
10:05 PM rue_mohr: oh yea
10:06 PM aandrew: Tom_L: interesting, your encoder is on a non-1:1 pulley?
10:06 PM rue_mohr: yea fast stop
10:06 PM Tom_L: rue_mohr, that's with no breaking
10:06 PM rue_mohr: carefull stop too hard push up the DC bus voltage and can cause it to blow up
10:07 PM rue_mohr: nice
10:07 PM Tom_L: just their defaults
10:07 PM Tom_L: the brake isn't enabled
10:07 PM Tom_L: but i will eventually hook it back up
10:07 PM Tom_L: aandrew, it's 1:1
10:07 PM rue_mohr: they naturally do breaking when asked to stop
10:08 PM Tom_L: just looks like it isn't because it's all beat to hell
10:08 PM Tom_L: rue_mohr, i'll feed it thru the external resistor eventually
10:08 PM Tom_L: it doesn't even get warm
10:08 PM Tom_L: from high rpm to stop several times
10:09 PM rue_mohr: yea it bumps the voltage on the DC bus
10:09 PM Tom_L: i gotta fix the rpm scale though
10:09 PM Tom_L: it's off
10:09 PM rue_mohr: it *can* bump it higher than the component ratings
10:10 PM aandrew: Tom_L: ah
10:10 PM Tom_L: the one they have mounted to the side of the case gets hotter that a pistol
10:11 PM Tom_L: aandrew, one of the flanges got knocked off
11:19 PM rue_mohr: Tom_L, which flanges?