Get real world experience and user feedback on the electric bicycle products.
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andreym 100 W
- Posts: 259
- Joined: Feb 03 2010 3:10am
- Location: Moscow, Russia, 127411
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by andreym » May 29 2010 3:33pm
Knuckles wrote:Well I finally got it all together. I re-flashed the MCU and set the amps to 50A.
When the LEFT e-Brake alone is slightly pulled (BK to GND is shorted) the throttle will allow variable regen.
When the RIGHT e-Brake alone is slightly pulled (EBS to GND is shorted) the controller shuts off.
When BOTH e-Brakes are applied the controller applies max regen to a stop.
*
-Knuckles
Can you share how to make this mod? I`d like to add this mod to Lyen`s 18fet controller - is it possible?
Thanks in Advance,
Andrey.
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mwkeefer 10 MW
- Posts: 2263
- Joined: Jun 14 2009 8:47am
- Location: Malvern, PA USA
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by mwkeefer » Jun 30 2010 10:12pm
Knuckles,
6FET me will ya?
Seriously any stock? Looking for FETs too (4110s/4030s, whatever I can get)
TIA!
-Mike
PS:
I'll happily take unbolstered controllers and build them myself, not a problem here - becoming an artist with 8G solid and some handy mini HiTemp C clamps I made to keep the 8G on the traces... made templates too (should I upload them in PDF format for everyone to share?)
Regards,
Mike
{My Rides]
2010 Dahon Jack - GNG v1 - LYEN 6FET - 20/40A - 18S2P10AH - Nom:66.6v,1332w
2004 Hard Rock Pro Disc - Recumpence ms eDrive v4 - Astro 3220 4T - 12S2P16AH - HV110 - Left Side Drive - Gearing: 38mph
Nominal Peak Power @ 60 seconds: 5328 watts - Maximum Power: 49.8v, 120A, 5872w
2010 Downtube 8FH - Stock GNG v1 Stock Controller - EB809XC - 12-16S
2012 Downtube Nova 7spd - Stock GNG v2 - 12S2P10AH - EB809 - 12S-16S - 20A/30A,Nom VCC: 44.4, 888w
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Knuckles 10 kW
- Posts: 971
- Joined: May 02 2008 10:10am
- Location: Wrong Island, NY
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by Knuckles » Jul 01 2010 10:00pm
DANG!
Still testing! Help anybody?
I hate soldering. I LOVE theory.
Seriously ... I welcome fellow scientists.
I've been so busy with work (like real job work).
- WIF.jpg (58.61 KiB) Viewed 1505 times
- Master_Mod.jpg (59.01 KiB) Viewed 1489 times
- I_Hate_Soldering.jpg (65 KiB) Viewed 1489 times
Now this is not the end.
It is not even the beginning of the end.
But it is, perhaps, the end of the beginning.
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liveforphysics 100 GW
- Posts: 14001
- Joined: Oct 29 2008 1:48am
- Location: Santa Cruz, CA, USA
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by liveforphysics » Jul 01 2010 10:26pm
Knuckles- For a given motor do you know what the current through the FETs has in common for the following examples?
50v 75amps
100v 37.5amps
150v 25amps
It's all exactly the same current loading through the FETs.
The difference is simply that the 150v rated FETs will be making about 3-4x the heat.
Be careful rating controllers by battery current values, as you know two controllers both pulling 25amps at 150v, one driving a 5302 and one driving a 5306, the controller driving the 5302 would have 3x the FET loading.
Likewise, if the motor's being powered aren't needing the additional RPM potential (like in the event of direct drive hubmotors where aero drag meets power limits), then running at a higher voltage only makes for plenty of additional liability and more controller heating with no advantages.
Each carcinogen vapor exposure includes a dice roll for cancer.
Each mutagen vapor exposure includes a dice roll for reproductive genetic defects in your children.
Each engine start sprays them into a shared atmosphere which includes beings not offered an opportunity to consent accepting these cancer experiences and defective genetics life experiences.
Every post is a free gift to the collective of minds composing the living bleeding edge of LEV development on our spaceship.
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Knuckles 10 kW
- Posts: 971
- Joined: May 02 2008 10:10am
- Location: Wrong Island, NY
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by Knuckles » Jul 01 2010 11:04pm
liveforphysics wrote:Knuckles- For a given motor do you know what the current through the FETs has in common for the following examples?
50v 75amps
100v 37.5amps
150v 25amps
It's all exactly the same current loading through the FETs.
The difference is simply that the 150v rated FETs will be making about 3-4x the heat.
Be careful rating controllers by battery current values, as you know two controllers both pulling 25amps at 150v, one driving a 5302 and one driving a 5306, the controller driving the 5302 would have 3x the FET loading.
Likewise, if the motor's being powered aren't needing the additional RPM potential (like in the event of direct drive hubmotors where aero drag meets power limits), then running at a higher voltage only makes for plenty of additional liability and more controller heating with no advantages.
Ahh! That's why I have a therm switch on the high side fet heat sink. 100C shuts it all down.
Good? Bad? Ugly?
Now this is not the end.
It is not even the beginning of the end.
But it is, perhaps, the end of the beginning.
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liveforphysics 100 GW
- Posts: 14001
- Joined: Oct 29 2008 1:48am
- Location: Santa Cruz, CA, USA
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by liveforphysics » Jul 02 2010 9:24am
Knuckles wrote:
Good? Bad? Ugly?
Knuckles, I made a thread that covers the topic as best as I could.
http://endless-sphere.com/forums/viewto ... =2&t=19590Each carcinogen vapor exposure includes a dice roll for cancer.
Each mutagen vapor exposure includes a dice roll for reproductive genetic defects in your children.
Each engine start sprays them into a shared atmosphere which includes beings not offered an opportunity to consent accepting these cancer experiences and defective genetics life experiences.
Every post is a free gift to the collective of minds composing the living bleeding edge of LEV development on our spaceship.
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Knuckles 10 kW
- Posts: 971
- Joined: May 02 2008 10:10am
- Location: Wrong Island, NY
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by Knuckles » Jul 04 2010 1:07pm
Finally ...
High resolution original step-by-step pics here ...
http://98.131.176.65/endless-sphere/150V30A/?N=D
btw ... Contact Steveo if you want one ... He likes soldering. I HATE soldering.
I like design.
F-N-A
-Knuckles
Now this is not the end.
It is not even the beginning of the end.
But it is, perhaps, the end of the beginning.
