Front 24V brushed hub, rear gas drive, on-demand recharge.

General Discussion about electric bicycles.
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fechter
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Re: Front 24V brushed hub, how to regen?

Post by fechter » Apr 03, 2016 12:39 am

The boost converter is the right idea. You might be able to find a more powerful one or use two in parallel (not sure this is possible). 5A is pretty good though.

28.0 to 28.2V sounds good. The batteries will be pretty charged by that voltage. You could run at that voltage for fairly long periods without gassing the cells. Most lead bricks will have it printed right on the battery.
"One test is worth a thousand opinions"

augidog
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Re: Front 24V brushed hub, how to regen?

Post by augidog » Apr 03, 2016 1:54 am

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fechter
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Re: Front 24V brushed hub, how to regen?

Post by fechter » Apr 03, 2016 10:29 am

Ah, I missed about the battery type somewhere. I was going by the pics.

Here's the tech data for those batteries:
http://www.houseofbatteries.com/documents/K2B12V7EB.pdf
They recommend 14.6v charge voltage, so you might want to set the converter a bit higher, like 29V.
"One test is worth a thousand opinions"

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Re: Front 24V brushed hub, how to regen?

Post by augidog » Apr 03, 2016 1:25 pm

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Re: Front 24V brushed hub, how to regen?

Post by augidog » Apr 06, 2016 12:35 am

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fechter
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Re: Front 24V brushed hub, how to regen?

Post by fechter » Apr 06, 2016 11:04 pm

I think that's the first real parallel hybrid bike I've seen.
"One test is worth a thousand opinions"

augidog
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Re: Front 24V brushed hub, how to regen?

Post by augidog » Apr 08, 2016 4:30 pm

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Re: Front 24V brushed hub, how to regen?

Post by augidog » Apr 08, 2016 4:31 pm

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Rassy
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Re: Front 24V brushed hub, how to regen?

Post by Rassy » Apr 08, 2016 11:09 pm

Congratulations on getting your serial hybrid going the way you wanted it to. I'm going to have to get down to Reedsport one of these days and see it all in person. :D
-Rassy-
One Tadpole Trike equipped with a Bafang BBS02
https://endless-sphere.com/forums/viewt ... 28&t=69419
One Delta Trike equipped with a Bafang BBS02
https://endless-sphere.com/forums/viewt ... 0#p1291260

augidog
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Re: Front 24V brushed hub, how to regen?

Post by augidog » Apr 08, 2016 11:30 pm

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Re: Front 24V brushed hub, how to regen?

Post by Rassy » Apr 09, 2016 9:35 am

Sorry, I have no idea how to properly define your rig. I had seen fechter call it a parallel hybrid, but when I was typing serial hybrid is what came out. Of course, being able to supply pedal power is a third leg (pun intended) of the hybrid. :D

I'm thinking Friday, May 13th. I'll give you a call in the next couple of weeks.
-Rassy-
One Tadpole Trike equipped with a Bafang BBS02
https://endless-sphere.com/forums/viewt ... 28&t=69419
One Delta Trike equipped with a Bafang BBS02
https://endless-sphere.com/forums/viewt ... 0#p1291260

augidog
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Re: Front 24V brushed hub, how to regen?

Post by augidog » Apr 09, 2016 2:55 pm

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fechter
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Re: Front 24V brushed hub, how to regen?

Post by fechter » Apr 09, 2016 3:40 pm

Serial would be if the gas engine drove a generator and all the mechanical power was electric/human.

I guess it is tribrid too. With full throttle on the gas, electric, and pedaling, you should be able to accelerate pretty briskly.
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Re: Front 24V brushed hub, how to regen?

Post by augidog » Apr 09, 2016 3:52 pm

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Re: Front 24V brushed hub, rear gas drive, on-demand recharge.

Post by augidog » Jan 02, 2018 8:06 am

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