Radium 6485 & 6455 Motors

Just curious, with magnets rated to 180C, why do you advise temp cutoffs at 110c? Is there something bottlenecking it?

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Yes all the other resins used to make the motor, such as the resin to glue the magnets to the rotor housing, or to hold the windings in place. Even the resin between the stator laminations. Motors have a lot of glue and the hotter you make it the weaker it becomes and faster it degrades.

But also even for the magnets 180C assumes no field applied to them. Under load those magnets may only be good to say 120C before they begin to demagnetise. Even vibration can cause them to demagnetise. So the nice thing about higher temp rated magnets is that it usually means they are overall more resilient to demagnetising.

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New firmware with zero built-in throttle curve should be here any day now. Keep an eye out for a beta test announcement.

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Finally :pray: hope there will be an update mail like usual from Hoyt the time the beta run did work out successfully.

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Yes, but only after thorough testing by beta testers. The only change is the throttle curve but we must verify.

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When you swapped to a what now :eyes:

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Nice. Is that for all power modes or does it change with the mode?

I’ll show you sneak peak in Radium thread :smirk:

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RSSR :joy: @DerelictRobot

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Tbd

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giphy

So basically, the polar opposite of VESC.

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Batch 6 shipping out :call_me_hand:

8 x 30mm shafts and 5.5mm bullets to suit the DV6.

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6455 motors 175kv and 205kv now in stock

Exactly the same as the 6485, just squeezed in a press. And the juice is used to make Radium energy drinks :rocket:

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Radium energy drinks when :rofl:

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Currently using scepterr 6374 dark matter motors, fucked can on one, looking to purchase new motors.

Comparing cost,
Radium 6455-$415cad
Janux 6374-($365usd) ~500cad
Radium 6485-$710cad

I dont really want to do the work of mounting up entirely new motors, was planning a shaft transplant, but i beat the shit out of my motors and that price tag for motors im fairly sure i have to battle harden myself is a bit crippling.

Im not entirely sure the 6485s will fit with my current mounts, and if im going to have to fuck around with epoxy either way, im leaning toward 6455, my worry is that i will have a noticable drop in power, i know the motors are high power and quality by consensus, but will the 6455 feel underwhelming by comparison?

And any chance for a mothers day sale? :sweat_smile: pretty sure my mother wants me to have new motors for mothers day :sweat_smile::rofl::sweat_smile:

Tldr will switching from scepterr 6374 to radium 6455 have a substantial loss in power?

Do you have a ride log you can share? it all depends how you ride. If you aren’t pushing the 6375 motors hard, then you might not notice the change to smaller motors. At small to medium amp levels (0 to 50 ish amps), the 6355 and 6375 are going to produce the same torque. Generally I wouldn’t recommend 2wd on 6355, but it all depends how you’re using the board.

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@Shadowfax Why wouldnt you reccomend? I usually run on low rather than mid or high on my remote, but i sit comfy ~25-30kph just not a huge fan of wheelies off the line :sweat_smile: and im not going crazy fast usually cause my roads/sidewalks are shit

No logs unfortunately, but this is the board, it is a tad heavy for its size imo, 60d, 12s2p, and my motors hit a couple curbs omw to work pretty regularly, so im a bit iffy about 64measurement, but also pretty sure theyre stronger motors :man_shrugging:

Been putting off getting new mounts cause then i meed new belts, so i am trying to hold out for gear drives :sweat_smile: probably half the reason i need to switch motors

Think of it this way - that 1mm extra material all goes into the can to make it stronger. Meaning it can take much more beating for sacrificing 0.5mm clearance.

In my opinion for that riding the 6455s are totally fine, you don’t need bigger. These motors are more powerful than your average 6355.

If you run the same KV and amps you won’t notice a difference in performance. You can probably run the same amps as budget 6374s.

Also these can get much hotter than low quality motors. You can run 100C start for thermal throttle 115C end. That gives quite a lot of extra headroom for performance.

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That was also my assumption regarding the can material, honestly didnt even think abt kv :sweat_smile: im at 190, i can choose from 175 or 205. my gut response would be to go 175 cause smaller motors, but im not 100%, and that would theoretically lower my top speed? :thinking: on top of them already being smaller motors

Lower kv=more torque? At least how i read the google definition

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