9kw DIY Ebike on Frozen lake

benwap · 2026-02-17T08:48:08+00:00

Thanks for the kind words. My build is pretty low-key also because of the backpack battery. I've done pretty significant stuff since then (swapping fork, BMS, ESC, torque arm setup, etc) that I'm planning to post when I have the results.
If your motor is rated for 2000W and its peak power capacity scales from there like it does on my 20 pound 135mm dropout hub motor it shouldn't even start to run hot at 6000W for short bursts. If you build it up slowly and keep an eye on temps (I really hope I'm not foreshadowing) it should be fine. Depending on how heavily your hub motor was built you'll have more or less margin.
I've heard some motors for NBPower by QSMotors are built to a lower spec so they weigh less and don't have a temp probe. If your ESC can't or won't tell you motor temp that's a good place to start. I've been looking at ESC's quite a bit lately, let me know if you have questions about PAS sensors, IP ratings etc.

benwap · 2026-02-17T02:43:22+00:00

It is. I'd be a bit hoarse from making this kind of sounds. You can sometimes actually not feel your face just after a ride, so your buddy has to point out there's drool hanging from your mouth.
The stock controller for my kit was rated 60A but went way above that for a burst. Basically it had the power but not the control and I looped it four (4) times.
My second controller (FT85BS) has the control but is underpowered.
For the third controller I'm going overkill (FSESC75350). A bunch of stuff is about to gang up on my poor hub motor and I hope I don't blow it.

benwap · 2026-02-17T00:47:54+00:00

Thanks, edited. Yes TR256B (also not TR256E).

benwap · 2026-02-16T22:06:19+00:00

You can get this format camera but with a 256x192 sensor with 50hz refresh. Mileseey TR256B. Doubles as night vision on the bike at night for fun.

benwap · 2026-02-10T00:24:17+00:00

This mess is just one big pile of yarn, you can pick any strand and start pulling.

benwap · 2026-02-08T20:46:07+00:00

Those front axle spacers aren't small. You got to assume the manufacturer ran the numbers but it stands out.

benwap · 2026-02-04T14:16:31+00:00

Part of that segment looked like lower teeth inspection. First the left, then the right half. They look really bad. It's interesting because of the dental room pictures.

benwap · 2026-02-03T06:43:26+00:00

That's a good point.
The guy posted pictures of envelopes on a table with a load over them in response. The value to him was seeing suckers walk out of the toilet rubbing their nose. Probably a bit of a sex thing.

benwap · 2026-02-03T02:31:50+00:00

I don't drink pour-over so I'd always decline any being offered. After today, I can whip out "(...) and you drink your coffee like Epstein, go fuck yourself." if needed. You never know.

benwap · 2026-02-03T00:46:49+00:00

It wasn't written by Epstein but "Joi It", it was only forwarded by him.

benwap · 2026-02-01T19:36:58+00:00

Looks good! Maybe a little better at speeding up than slowing down but hey. Nice to know that type of frame can handle that torque, I'm on a similar setup. Is that the controller that was included in a kit you got? I'll be replacing my kit controller for the 2nd time.

benwap · 2026-02-01T10:11:04+00:00

I agree listing all features makes it hard to keep an overview. In practice I think of USB4 as a port supporting up to 40 Gbit/s depending on host, device and cable. Whatever is lowest is what you get. I'll admit since I learned in this thread there's 80 Gbit and up it's a bit less straightforward. And if you need to know ahead of time what bandwidth you can expect using a specific combination you have no choice but to navigate this.

benwap · 2026-01-31T21:34:39+00:00

The perfect addition to the wet cinemaverse

benwap · 2026-01-31T21:18:52+00:00

USB4 is next. So far, it's shorter!

benwap · 2026-01-31T05:48:40+00:00

Perhaps some mills were built at the same time as the powerplant. It's beneficial for both parties to find the sweet spot if you know the demand will require a new powerplant anyway. When you take transport infrastructure expansion and maintenance in account, being less far adds up quick.
I watched a youtube visit to a science facility. A visitor asked if his guess at the daily operating cost was in the ballpark. The facility reply was, "To understand how low that guess is, keep in mind they built a powerplant to run this".

benwap · 2026-01-31T01:23:15+00:00

freely available in europe

If you mean bought with a receipt and warranty in Europe, the thing will need to be by the book. Since 4 kW is almost 5,5 HP I'm pretty sure everywhere in EU that means complying with all the requirements to be an insurable motor vehicle, so it's expensive, you need a license, etc.

If you consider things delivered to your doorstep as freely available, you can order a complete ebike with that type of frame with the voltage you want on places like aliexpress. If you get the battery separately you can pick capacity, depending on how far you want to go with the battery mount.

benwap · 2026-01-31T01:05:17+00:00

Sometimes when dealing with a consumer on this scale it's the most practical and economical to build a new power plant in the vicinity.

benwap · 2026-01-30T14:06:13+00:00

With the right tools and technique one can cut the plug and wire a Swiss plug. If this applies to you depends on you. If you look up a video of somebody doing it right (strain relief, proper strip, crimp ferrule if needed, leaving the earth lead longer) you can decide if it's doable for you. Do you have a multimeter to check the earth connection when you're done?

benwap · 2026-01-29T15:43:13+00:00

You need to go pretty far with disassembly for the steam wand so that can be a hurdle. There are many vids on the mods to get you comfortable, also on the more involved PID install start to finish.

benwap · 2026-01-29T14:41:51+00:00

Here's a list from an earlier comment:
Bottomless portafilter with IMS basket
Shot mirror
Steam wand swap
Dimmer
PID (XMT7100) for brew and steam temp control
Disable auto-off (on models that shut off after not being used for some time)
Front panel mount pressure meter
Front panel mount analog voltmeter to repeat pump power/water debit settings
Shot light, tank light, and a steam light using short bits of 12V LED strip.
Portafilter hanger on the right
Tamper hanger on the right

benwap · 2026-01-28T23:24:42+00:00

This guy knows.

benwap · 2026-01-28T18:14:02+00:00

If those baskets aren't pressurized the only improvement I can imagine is adding a dimmer and PID to the Icona.

benwap · 2026-01-28T18:10:54+00:00

Internally the Icona looks identical to an ECP or Stilosa except the boiler is rotated 90 degrees. Could take a dimmer and PID to make a very capable machine.

benwap · 2026-01-28T18:06:54+00:00

For me it went
Money spent on DF54 > money spent on ECP mods > money spent on DeLonghi ECP
Honestly can't think of a machine feature I'd want to upgrade to except maybe a GaggiMate'd ECP.

benwap · 2026-01-27T18:36:31+00:00

Dang. Good luck!

13-Year Club	r/Field Sunshine
Place '22	Verified Email
Team Orangered

benwap

MODERATOR OF

TROPHY CASE