We made an electric 50 pitbike for fun in a few days of spen

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Re: We made an electric 50 pitbike for fun in a few days of

Postby Arlo1 » Wed Mar 28, 2012 9:57 am

grindz145 wrote:OK, now I want to see the pitbike with the Mission drivetrain....

Image

:twisted: :twisted:

Typicaly AC motors are heavier then BLDC motors.... You will be able to make the fastest Bike with a brushless motor!
Thanks Justin of http://www.ebikes.ca/
Also a thanks to Methy at http://www.methtek.com/ :)
And Dave who has some good deals on STUFF Incl. Mosfets, Current sensors and Nomex paper.
RC lipo and most other types of Lithium batteries you MUST know your individual cell voltages while charging and discharging.
Batteries of all kinds need respect they can burn your house down, so don't sleep with them under your bed or any other were you cant afford smoke or fire!
Never above 4.2v never below 2.7v EVER!!!
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Re: We made an electric 50 pitbike for fun in a few days of

Postby grindz145 » Wed Mar 28, 2012 11:07 am

Arlo1 wrote:
grindz145 wrote:OK, now I want to see the pitbike with the Mission drivetrain....

Image

:twisted: :twisted:

Typicaly AC motors are heavier then BLDC motors.... You will be able to make the fastest Bike with a brushless motor!


There's a brushless PM version. It would be fun to see what 120kW would do for a little (alot) extra weight
http://www.endless-sphere.com/forums/viewtopic.php?f=18&t=19548 - Ebike Nerd Podcast
Thanks to Justin @ ebikes.ca! Go there, buy stuff. Support the Revolution :D
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Re: We made an electric 50 pitbike for fun in a few days of

Postby Arlo1 » Wed Mar 28, 2012 2:38 pm

Oh yeh... I think I read that... Just back to the controller issue. Hmm cant wait for graphine transistors!
Thanks Justin of http://www.ebikes.ca/
Also a thanks to Methy at http://www.methtek.com/ :)
And Dave who has some good deals on STUFF Incl. Mosfets, Current sensors and Nomex paper.
RC lipo and most other types of Lithium batteries you MUST know your individual cell voltages while charging and discharging.
Batteries of all kinds need respect they can burn your house down, so don't sleep with them under your bed or any other were you cant afford smoke or fire!
Never above 4.2v never below 2.7v EVER!!!
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Re: We made an electric 50 pitbike for fun in a few days of

Postby grindz145 » Wed Mar 28, 2012 2:44 pm

Arlo1 wrote:Oh yeh... I think I read that... Just back to the controller issue. Hmm cant wait for graphine transistors!


They have a controller for it, IGBT based. We're talking Luke money here though.... :twisted: I have a feeling it's: if you have to ask, you can't afford it :mrgreen:
http://www.endless-sphere.com/forums/viewtopic.php?f=18&t=19548 - Ebike Nerd Podcast
Thanks to Justin @ ebikes.ca! Go there, buy stuff. Support the Revolution :D
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Re: We made an electric 50 pitbike for fun in a few days of

Postby johnrobholmes » Wed Mar 28, 2012 6:14 pm

Awesome! I wonder how long the battery lasts ripping around? 20 minutes?
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Re: We made an electric 50 pitbike for fun in a few days of

Postby Arlo1 » Wed Mar 28, 2012 9:41 pm

grindz145 wrote:
Arlo1 wrote:Oh yeh... I think I read that... Just back to the controller issue. Hmm cant wait for graphine transistors!


They have a controller for it, IGBT based. We're talking Luke money here though.... :twisted: I have a feeling it's: if you have to ask, you can't afford it :mrgreen:

hmm IGBT based... Slow switching speeds and what voltage did they plan it for? The must have wound it with higher inductance and just upped the volts to make it all work...?
Thanks Justin of http://www.ebikes.ca/
Also a thanks to Methy at http://www.methtek.com/ :)
And Dave who has some good deals on STUFF Incl. Mosfets, Current sensors and Nomex paper.
RC lipo and most other types of Lithium batteries you MUST know your individual cell voltages while charging and discharging.
Batteries of all kinds need respect they can burn your house down, so don't sleep with them under your bed or any other were you cant afford smoke or fire!
Never above 4.2v never below 2.7v EVER!!!
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Re: We made an electric 50 pitbike for fun in a few days of

Postby Arlo1 » Wed Mar 28, 2012 9:46 pm

Arlo1 wrote:
grindz145 wrote:
Arlo1 wrote:Oh yeh... I think I read that... Just back to the controller issue. Hmm cant wait for graphine transistors!


They have a controller for it, IGBT based. We're talking Luke money here though.... :twisted: I have a feeling it's: if you have to ask, you can't afford it :mrgreen:

hmm IGBT based... Slow switching speeds and what voltage did they plan it for? The must have wound it with higher inductance and just upped the volts to make it all work...?
Yup its 450v and only 480 phase amps but.... WIth a motor wound for 450 volts 480 phase amps would be pretty epic. Hmmm Its only a max of 20 khz switching frequency though.
I think I will try to un burn my self out and finish mine as soon as the house reno is done.
http://ridemission.com/wp-content/uploa ... -Sheet.pdf
Thanks Justin of http://www.ebikes.ca/
Also a thanks to Methy at http://www.methtek.com/ :)
And Dave who has some good deals on STUFF Incl. Mosfets, Current sensors and Nomex paper.
RC lipo and most other types of Lithium batteries you MUST know your individual cell voltages while charging and discharging.
Batteries of all kinds need respect they can burn your house down, so don't sleep with them under your bed or any other were you cant afford smoke or fire!
Never above 4.2v never below 2.7v EVER!!!
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Re: We made an electric 50 pitbike for fun in a few days of

Postby etard » Thu Mar 29, 2012 12:25 am

This is badass Luke, bring it out to Grange!
Four wheels moves the body, Two wheels moves the soul
Thanks to Justin @ http://www.ebike.ca He brings the soul to ES
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