FOCsTrot Lite - Faultline | Bergs | HeXL | 6.6+ | 12s3p | 6374s

What should I get?

A while ago I bought motors and a custom battery from Hyperion LLC…we all know what happening there, and as it stands I have a battery set to arrive Monday but it’s uncertain if I will ever get the motors. I am really hoping to get those particular ones because they are 170kv sealed and pre-hardened MayTech 6374s.

Should they not arrive I will be in search for another pair of motors, what are your recommendations? I will buy during the Black Friday sale so those would be the relevant prices
Needs:

  • 190kv or less…I don’t wanna die from speed
  • 63mm can diameter…forward mount means clearance issues
  • sensored…I’ve run unsensored and I hate the feeling
  • <100mm length…the inner face to face space on my mounts is 200.1mm
  • <$300 shipped for the pair…58% more than I’ve already paid

Wants:

  • sealed…less maintenance is preferable
  • prehardened…I can do it myself but I’d rather not have too
  • MayTech grade or comparable…everything is already nice, I don’t wanna drop the ball on the last part
  • 170kv

Currently looking at:

@haggyboard.timo sells maytech 170kv sealed ones for $120 each, add some pulleys and they’re $250 shipped.

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Ooh that’s not a bad deal, any idea when the 170kvs are gonna be back? And I’m assuming they are the standard MayTech HAC-Cs?

Looks like the model listed is HB-6374-170-CC-D. Maybe @haggyboard.timo can weigh in on when the 170kvs might be back in stock.

I have his 190kvs and they’re measured to be 172kv, so I can only assume the 170kvs might be a bit lower too.

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Is that always a thing? I have a “140kv” motor and its measured at 119kv

I was referring to the MayTech labeling for their motors, these are not hardened or run the super large can bearing right?

Not sure, I think there was a thread a bit back on the old forum. Maybe someone could start one here and get community input. @agentdev recieved some 200kv motors that measured at ~170 or so.

don’t believe they’re hardened but looks like the bearing is typical with other motors

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Need an opinion for a problem, geometry is a bitch!

I got enough room for my battery and ESC with space left over for light up toys and fuses and what not, but the BMS (ontop of the battery) is higher than the enclosure, by about 3/8"… Do I just route a pocket in the deck so it sits in it? Also what should I use for padding on the battery? The main body of the pack sits at the lip of the enclosure when there is nothing underneath, I was thinking craft foam on the enclosure and Velcro on the deck

You can also remove the heat shrink and move the bms if you’re feeling brave :stuck_out_tongue_winking_eye:

Long story short, I bought a battery and it doesn’t fit, what do?

I’m thinking I move the BMS to sit under the ESC and shrink wrap the whole thing (just phase wires and sensors on one end, and antispark with charger on the the side…and I guess the aux line on the far end) I’ll have space for it and it’ll be a nice wrapped block…only 3mm to spare lengthways, and -2mm to spare on the top

P.s. if anyone wants to send me a sticker that says “Tetranox angry pixie box” just PM me :smile:

Is it bad to set the ESC and BMS heatsinks against each other and shrink wrap it all together? I’m thinking a plastic spacer to keep the batteries from rubbing

Why can’t you move the esc more to the rear in the enclosure? It looks like it’s got room.

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Height clearance, the caps are tall enough that it doesn’t sit in the pocket, I can only use the space for the light drivers

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I’m gonna guess a hair dryer to mould out the plastic isn’t possible either. What about cutting the back or front off and extending the enclosure in some way?

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That’s got to be such a low profile enclosure if it won’t fit… Can you route the deck a little?

Hmm, I guess that’s possible, get some Kydex and use it to patch the gap? But all that does is let me have the ESC at the end, still doesn’t help height. I really don’t wanna have to put a giant spacer underneath…gotta have some style right

That’s what I want to avoid…it would just be leaving 1/8” of the deck left under my front foot

But would it be safe to stack the ESC and BMS?

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What about glassing the top? A few layers of fibreglass/carbon fibre could strengthen it.

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How many mm to tall is the pack?

I was planning to frit the top but that would work, just worried if it getting uncomfortably stiff

52mm, the main cell body is 43mm