Cute Q100H Autopsy & Modify 2017

Get all your technical information about electric bikes here.
User avatar
motomech   1 GW

1 GW
Posts: 3307
Joined: Sep 11 2010 12:21am
Location: Punta Cana Baja Mexico

Re: Cute Q100H Autopsy & Modify 2017

Post by motomech » Apr 19 2018 9:47pm

I wouldn't do that.
I added ATF to a Q100 several years ago and without dedicated axle seals, it came right out and rendered my disc brake useless.
I had to take the whole thing apart to clean out the mess.
I don't understand why everyone is so worried about the Q100 "over-heating". On reasonable power, the 201 and 260 variants spin so fast they don't over-heat anything and w/ the 328, what I over-heated was the controller, specifically, I melted the phase connectors.
W/ one of my current bikes, I'm running a 201C on 14S (54.6 V nom.) w/ a 20 Amp 9-FET w/ no heating prob.s and weigh 250 lb.s and live in TUcson. Haven't used it yet in the dead of summer yet, but I'm not worried.
Why "fix" a prob. you haven't experienced yet?
And if it does melt or cook something, that's just the Ebike Gods telling you, you need a bigger motor.
Motomech

'03 Rocky Mountain Edge 2WD 260 Q100H frt and Ezee V1 rear 2 Elifebike 20A & 25A 9-FET controllers 12S/10Ah Multistar Lipo rear 4Ah Turnigy frt Luna Cyclops Extra lite Alex 24DM rims, Crazy Bobs run ghetto tubeless. 25 mph. Mean Well HLG-320H-54A
https://endless-sphere.com/forums/viewt ... =3&t=83430
'07 GT Idive 4 4.0, Q100C 201 14S LiPoly elifebike 9-FET 20A controller. 23 MPH.
https://endless-sphere.com/forums/viewt ... 4#p1378484

User avatar
Papa   1 kW

1 kW
Posts: 392
Joined: May 13 2008 1:06am
Location: NW

Re: Cute Q100H Autopsy & Modify 2017

Post by Papa » Apr 20 2018 7:12pm

motomech wrote:
Apr 19 2018 9:47pm
I wouldn't do that.
I added ATF to a Q100 several years ago and without dedicated axle seals, it came right out and rendered my disc brake useless.
I had to take the whole thing apart to clean out the mess.
First... I'm not using ATF. And second,... I installed axle seals. As expected, I don't have leakage.
motomech wrote:
Apr 19 2018 9:47pm
Why "fix" a prob. you haven't experienced yet?
And if it does melt or cook something, that's just the Ebike Gods telling you, you need a bigger motor.
The changes I have made are solely intended to improve efficiency and longevity - Makes no sense to me to install a lower efficient "bigger motor", when this one has been bench tested to 1.4kW... and the stator never reached 75c.... on a steady 75V nominal diet.
~ Recycle... Ride your bike again ~

-dg   1 kW

1 kW
Posts: 455
Joined: Jun 01 2012 4:38am
Location: Oakland, CA USA

Re: Cute Q100H Autopsy & Modify 2017

Post by -dg » Apr 28 2018 9:51pm

Papa wrote:
Apr 20 2018 7:12pm
I'm not using ATF. And second,... I installed axle seals. As expected, I don't have leakage.
Maybe I missed it up thread, but what are you using instead of ATF? And are the axle seals really neccesary? If so, can you show a picture or a part number? I'm really interested in your approach and results with these motors.
If simplicity worked, the world would be overrun with insects.

User avatar
Papa   1 kW

1 kW
Posts: 392
Joined: May 13 2008 1:06am
Location: NW

Re: Cute Q100H Autopsy & Modify 2017

Post by Papa » Apr 30 2018 7:00pm

-dg wrote:
Apr 28 2018 9:51pm
Papa wrote:
Apr 20 2018 7:12pm
I'm not using ATF. And second,... I installed axle seals. As expected, I don't have leakage.
Maybe I missed it up thread, but what are you using instead of ATF? And are the axle seals really neccesary? If so, can you show a picture or a part number? I'm really interested in your approach and results with these motors.
I'm using pure silicone 50 cSt. Yes, axle seals are required if you use oil. I cut a single grove in the axle and used an O-ring. I also removed all inside bearing seals to completely eliminate grease.

I've been extremely busy as I'm moving to a new location - thanks to 25 yrs of accumulation.
~ Recycle... Ride your bike again ~

Post Reply