Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[dean mcneil]

working out the bugs should have some data soon.

[mrwilsn]

Been working on water cooled  sr motor,  stiill  testing looks promising.

The biggest challenge you will have is that the SPM motor in 2015 and older Zero's heat up on the inside where it's hard to get the heat away with a liquid cooling solution....the heats not in the case.

That's why others who race or just ride hard are going ventilated, some with forced air.  But at the expense of reduced life expectancy due to exposure of the motors guts.  Over the long run even if you live in a hot, dry climate you are still going to have problems sooner than if you didn't ventilate because of sand and dust.

Sent from my XT1060 using Tapatalk

[Patrick Truchon]

GRIN, the guys who make the Cycle Analyst, are experimenting with Statorade for hub motors.  I wonder if there would be any problems using that with higher rpm motors.  Their shop is a few blocks away from where I work.  I should stop by and pick their brains...

[Doctorbass]

GRIN, the guys who make the Cycle Analyst, are experimenting with Statorade for hub motors.  I wonder if there would be any problems using that with higher rpm motors.  Their shop is a few blocks away from where I work.  I should stop by and pick their brains...

lol  Pat i was about to post about the statorare ferrofluid solution lol... Justin From ebikes.ca is a pure genious. the made alot of search about that and it seem that the statorade ferrofluid is working pretty nice!!

In that case of a inrunner motor like the 75-7 motor, this would help keeping magnet cool. but wont have any effect on the stator.

But Justin poted the stator of the hub motor  and also tried to dip it on a poting liquid and improved the heat transfer between the winding and the stator core withc is nice and avoid hot spot for high power use.

I think  that the best improovement for overpower on these Zero motor would be to have the motor dip on poting liquid, let it dry, then add small qty of ferrofluid to help heat transfer between stator and rotor... and finally to have the stator shell part liquid cooled.

Doc

[ChainGun]

Burton, please excuse my noob question, but can you please explain what are you trying to do and why? Subject of the post hints that you're replacing your 2013 with a 2014 one?

[benswing]

He actually just addressed this very question on 11/11/15 about 17 posts up from yours.  You can find your answer there. 

He has a very unique situation that production 2013 bikes don't have.


Sent from my iPad using Tapatalk

[Burton]

Burton, please excuse my noob question, but can you please explain what are you trying to do and why? Subject of the post hints that you're replacing your 2013 with a 2014 one?

ChainGun, click the link in my signature and look for the second linked post with the (Image Heavy) tag ... in that thread you will find my second post indicates the back story But yes, I just replaced my 2013 motor with a 2014 SR motor.

[Burton]

Dean did you mill the outer fins then strap on a water-cooling ring over the motor with some heat sync compound?

Hard to tell what is going on in that picture

[Cortezdtv]

Hell ya he did!!!

Dean can I post the pics you sent me?
Badass idea quite inventive!!!

[Burton]

This is not a how to video series ... this is only here if you wish to see the process I took to install my new 2014 SR motor into my 2013 race modified bike.

[Patrick Truchon]

Nice videos Burton.  So how was your ride?

[Burton]

Nice videos Burton.  So how was your ride?

The ride itself was fine but since this was the first time I really got on the bike post firmware update I discovered the bike was reformatted to only have 3 bricks set for about a week. When I got this corrected the bikes SOC was always off by about +8 which means charging at 12 amps (-12A) would read -3 ... it wasn't until I let the bike charge over the weekend it corrected itself.

I had originally thought my chargers were at fault till I realized it was the firmware upgrade.

The bike runs well and sounds a little different. Not sure about performance gains / losses just yet but it does run a lot warmer than my previous ventilated motor. The highest time I got on my ventilated motor was 120F ... this motor has gone up to 171F when it was 45F outside.

My bike is naked, no plastics but tank, so it might not be getting enough air back there. I will likely have to duct air to the motor especially when I install the Last Vetter Fairing front cowl in the coming weeks.

[rgutt]

I know this is a really old post, but I was just looking at your pictures of the disassembled Zero motor. Were the bearings pressed onto the shaft or into the housing?

[Burton]

I know this is a really old post, but I was just looking at your pictures of the disassembled Zero motor. Were the bearings pressed onto the shaft or into the housing?

For the 2013 the face plate where the output shaft was had the bearing. Old private video I made when I had some bearing issues in an old motor. I don't have this motor anymore.
[/quote]