Can you also please stop creating so many threads for the same topic? It can be confusing and is borderline spam. Thanks.

I have 2 threads and this one was not about this topic, it was asking if a devise existed that was powered by 12v that had an output of 0 to 120v and was controllable. The questions lead me back to the other thread topics.

 

That's a good idea. And some super caps for passing gear.

 

That's a good idea. And some super caps for passing gear.

Let's not get ahead of ourselves but would that really work? Like an electric version of nitrous lol. I'm assuming one would have to find a way to slow the discharge rate

 

Don't mind me.....I have no idea what you're doing. I'm still trying to figure if it's dc or ac.

 

He wants to make an electric bike and wants to use a 90V 1-2KW treadmill motor. He needs to step up the voltage to 90VDC from a battery pack. He does not want to go DC-AC-DC and use an inverter and the DC adapter for the treadmill.

And rob, please be very careful around such high voltage circuits. You do not want to make a mistake that will be your last.

 

It's not that I don't want to go dc-a.c.-dc, I just feel it's a waste of a step. Thanks for the concern for my safety. I take extra precautions and move slowly around it.

 

https://www.amazon.com/Aosom-Electric-Battery-Powered-Conversion/dp/B00GIXZKP8

How fast do you need to go?

 

I did not know there was a speed regulation for a bicycle hub. 20USA/16EU

 

If seen those kits. It's exactly what I'm trying to avoid. The mark up on those parts is insane. I want this to be from mostly salvaged parts. As it sits, I have it something I can ride as long as the cord is for $50 and that was what I paid for the bike.

 

So how many minutes of riding do you want? And how much of a priority is speed/power?

 

Im limited to around 15mph by law. I still have to do the calclations to figure out the gearing. And I know ride time will depend on battry cap. I believe with li ion I will be able to get a fair amount of time.

 

I can build a 4s12p battery that will be 14.4v, 42ah 30amp continuous and 80 amp peak

 

Sounds great! But how much will it cost you, and what do you plan to make it out of?