Keep it cool! (with Hubsinks and Ferrofluid) - 8kW Enduro MSVA eBike V3 Build - Part 19
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- čas přidán 27. 12. 2021
- When pushing a hub motor to nearly 3 times it's rated limit, it's important to take heat management into account. As final modifications after replacing the phase and hall wiring, I'll be using hubsinks and ferrofluid to dissipate heat out from the stator inside.
This combination is what most people I've seen use and more data can be found on it here: ebikes.ca/product-info/grin-p...
Patreon: / everythingebike
Main parts used so far:
Frame - www.alibaba.com/product-detai... (actually bought on ebay from djanowicz but would now recommend www.cloudsto.com/ebikes/frame...)
3000W Motor - alienpowersystem.com/shop/bru...
ANT-BMS - www.cloudsto.com/ebikes/bms-1...
Controller - www.aliexpress.com/item/10050... and look for one with adjustable regen connector and motor temp sensor)
Moto Seat - www.alibaba.com/product-detai... (Again, bought from ebay but this is the style)
Aluminium 18” Rims - bit.ly/3rz0jCN
Michelin City ProTyres - www.tyretectrading.co.uk/mich...
DNM USD-8 Forks - www.ebay.co.uk/itm/DNM-USD-8-...
Brake light - www.ebay.co.uk/itm/184255666105
Indicators - www.ebay.co.uk/itm/384082460256
Headlight - www.ebay.co.uk/itm/284256329306
Headlight housing - www.ebay.co.uk/itm/304020958345
Kickstand - www.ebay.co.uk/itm/271579957492
Handlebar switches - www.ebay.co.uk/itm/171785772372 , www.ebay.co.uk/itm/254917098258
Hubsinks and ferrofluid - hubsink.com/
Cells:
This is the seller on endless sphere forum endless-sphere.com/forums/mem....
And here are the datasheets and pictures - endless-sphere.com/forums/vie...
Contact him if you like them and you can either collect from London or have them posted in europe i believe.
It gets to upwards of 120 degrees outside where I live-- This video possibly saved my life for this upcoming summer! Thank you a ton EverythingEbike!
remembering hearing about hubsinks years ago when they were coming out. but seem like nobody does that now?
Remove a little material from the joints in each section of the hub sinks for better contact with the hub you want a tighter fit to the hub for better heat transfer
I could do, but that's a lot of work for probably not much gain at all. The hub and the fins feel at the same temp from the small amount of testing I've done so far which is the key aim.
Awesome! Are you experiencing overheating (motor hot to the touch after a ride)? Or more of just a preventative measure?
Preventative at the moment as I haven't been on any long rides and expect it to heat up with 350A phase
@@EverythingEbikeChannel It will be nice to see how well it does! 👍👍
Hi bud iv got an 8000w in black my bike turns on but the motor does spin have you any idea what this could be
It would be nice to know the results of efficiency. What is the temperature before and after the installation of cooling
I would like to know as well. If it actually works or not
@@Mash3OH3 Look up the video "The Magic of Statorade Motor Coolant" (the hubsink store re-sells Statorade ferrofluid made by Grin Tech)
How's the temp?
Hello mate,I pulled my front brake on my stealth bomber without it been connected to disk now its locked,I noticed on one of your vids you done the same,can you send me link of video you watched to fix yours plz,cheers
If you mean the pistons have been pushed in too far, just get something in there (ideally a plastic spudger but can be a screwdriver) and push them back as far as they will go.
How long can you ride ad 45kph before it over heats
Haven't tested long distance yet, but barely gets hot pulling 8kW for about 3 miles
Will I get better range with these mods? Seems like less would ease battery usage.
It's more about dissipating heat rather than making the motor more efficient, but perhaps lower coil temps have a slightly lower resistance so save a bit of power? Will have to see when I get out riding it.
You get better range by reducing air resistance. The air resistance above 32 kph (20 mph) is so strong, it can cut your range in half. Lower your speed to double your range.
Hi whats the name of your bike rear tire stand??
The one I have is amzn.to/3I2XMtf but it's a bit wobbly for narrow frames so would now recommend one like this amzn.to/31U6s5M that has square arms that can be screwed down
You got some ferrofluid you sell
No, I got it all from the hubsinks website
Those heat sinks are way too expensive for what they do...
What do you suggest for cooling this build 72v 5k watt hub motor 72v 80 ah controller 72v60a battery with a 100a bms enduro frame
Not really you can get em for 80 bucks, I'm gonna do mine it's better than buying another hub motor. It just looks time consuming
Apparently statorade plus these hubs is the best type of cooling you can get for your stator. Compared to drilling holes or watercooling
It’s 100 percent worth it. Allows you to double your power output to the motor without overheating. This allows you to get up to 8000w peak, 6000 continuous on a 135mm dropout motor that normally can only do 3000w continuous.
customer service at Hub Sink sucks!
What did you need?