Search found 29 matches

by RebelRider.Mike
Nov 08 2018 10:50am
Forum: E-Bike Build Threads / Photos & Video
Topic: Dirt Cheap DIY eBike
Replies: 4
Views: 548

Dirt Cheap DIY eBike

I'm going to see how cheap I can make an eBike. All I've got right now is a nice bicycle that works well. https://i.pinimg.com/originals/ee/8d/3c/ee8d3c9c7840934822cf26967ec3f236.jpg If this looks familiar, it's because I've posted it before. I had to scrap that idea though as the components I picke...
by RebelRider.Mike
Jul 29 2018 1:34am
Forum: Alternative Energy
Topic: Mobile E-Bike Charging Station
Replies: 6
Views: 529

Re: Mobile E-Bike Charging Station

Cool setup. So you're getting something like 4 or 5 Amps into the battery in full sun? That's probably enough to keep the battery topped off and charge the ebike a the same time. Depending on how many Watts your bike needs to charge.
by RebelRider.Mike
Jun 28 2018 4:10pm
Forum: Alternative Energy
Topic: Looking into small DIY wind turbines.
Replies: 5
Views: 380

Re: Looking into small DIY wind turbines.

Thanks for the replies! I'm not sure how much wind I get. Each website I visit gives a different number for my area, and I'm not sure knowing the average would do much good anyway. I get a lot more in the winter than summer, and winter is exactly when I'd need it. I plan to build a hybrid grid-tie s...
by RebelRider.Mike
Jun 26 2018 8:53pm
Forum: Alternative Energy
Topic: Looking into small DIY wind turbines.
Replies: 5
Views: 380

Looking into small DIY wind turbines.

Hi folks, I've been looking at using solar panels to reduce my power bill, but in my region, they'll be almost useless in the winter. I'd like to supplement them with wind, but I haven't found much info on how to go about it. The websites I've come across assume an off-grid situation and are describ...
by RebelRider.Mike
Dec 27 2017 11:59am
Forum: Alternative Energy
Topic: Using an old car alternator to generate electricity...
Replies: 28
Views: 6851

Re: Using an old car alternator to generate electricity...

Thanks for the suggestions! I've made no progress on the "power bike" since my last post. My old car's carburetor bit the dust and I'm elbow deep in rebuilding it at the moment. But I did finally finish edditing the second video I made reassembling the alternator. JxQDqD6z5Jo I hope to make at least...
by RebelRider.Mike
Dec 03 2017 6:38pm
Forum: E-Bike General Discussion
Topic: Laptop Powered E-Bike
Replies: 21
Views: 1768

Re: Laptop Powered E-Bike

Thanks guys. 2.8v to 3v would be with a load. I already have the cells tested and built into batteries. My only roadblock right now is money for parts. Just like all my other projects, LOL.
by RebelRider.Mike
Nov 30 2017 4:00am
Forum: General Discussion
Topic: DIY battery pack for phone, tablet
Replies: 8
Views: 952

Re: DIY battery pack for phone, tablet

Not sure if this is what you have in mind, but if I were making a DIY portable charger, I'd make one this way: - A TP4056 charge controller with Volt and Amp protection. https://smile.amazon.com/gp/product/B071RG4YWM/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 - A Volt meter. https://smile.amazon.co...
by RebelRider.Mike
Nov 30 2017 3:13am
Forum: General Discussion
Topic: How to keep LiFePO4 warm in cold climate?
Replies: 6
Views: 594

Re: How to keep LiFePO4 warm in cold climate?

This is an interesting thread. I have an issue that seems similar. I bought a drop-in LiFePO4 starter battery replacement for my motorcycle. Works great in the summer. Seems like it discharges in cold temperatures. I was assured when I bought it that it wouldn't have any issues with cold. Absolutely...
by RebelRider.Mike
Nov 30 2017 2:46am
Forum: E-Bike General Discussion
Topic: Laptop Powered E-Bike
Replies: 21
Views: 1768

Re: Laptop Powered E-Bike

Glad your bike is working well! The BMSs I've seen all seem to be made for xs1p configurations. Their little resistors are just insufficient to balance multiple cells in parallel. Maybe I'm looking in the wrong place though. At least over/under Voltage, and over-Amp protections is nice, but I plan t...
by RebelRider.Mike
Nov 21 2017 7:02pm
Forum: Alternative Energy
Topic: Using an old car alternator to generate electricity...
Replies: 28
Views: 6851

Re: Using an old car alternator to generate electricity...

I made a video of my alternator tear-down. Not gonna be a cinematographer any time soon, but here it is.
by RebelRider.Mike
Nov 14 2017 9:54pm
Forum: Alternative Energy
Topic: Using an old car alternator to generate electricity...
Replies: 28
Views: 6851

Re: Using an old car alternator to generate electricity...

I got the alternator attached to the bike. Its ugly, but its all just stuff I had laying around. The only expenses so far have been a spring and the belt. https://s-media-cache-ak0.pinimg.com/originals/d8/2a/f3/d82af3575af916512920ecad0d65b51f.jpg It's hard to pedal and look down at the multimeter a...
by RebelRider.Mike
Nov 04 2017 1:26am
Forum: E-Bike General Discussion
Topic: Laptop Powered E-Bike
Replies: 21
Views: 1768

Re: Laptop Powered E-Bike

Slow progress on the eBike, but its still going. The bicycle got a proper fitting rear rack installed. And a third battery got soldered together yesterday: https://s-media-cache-ak0.pinimg.com/originals/cf/8b/b7/cf8bb721f269a89bb27fbb32a9bd1e32.jpg Check out those solders. I'm getting better! https:...
by RebelRider.Mike
Oct 27 2017 10:44pm
Forum: Alternative Energy
Topic: Using an old car alternator to generate electricity...
Replies: 28
Views: 6851

Re: Using an old car alternator to generate electricity...

Sort of. The PMA has the added issue that output voltage is directly proportional to speed. So you'd have pedaling resistance based on your load. Interesting. I didn't know that would be the case. I'm thinking at some point, if I can come up with a good way to make a new shaft or two, I'll experime...
by RebelRider.Mike
Oct 26 2017 7:02pm
Forum: Alternative Energy
Topic: Using an old car alternator to generate electricity...
Replies: 28
Views: 6851

Re: Using an old car alternator to generate electricity...

Well, it doesn't look like I can get the rotor apart without breaking it. If I want to experiment with magnets I'll have to make my own shaft and magnet assembly. I'm leaning back towards keeping the original rotor anyway. A fellow from the old Honda Civic forum suggested I use the original external...
by RebelRider.Mike
Oct 26 2017 4:03pm
Forum: Alternative Energy
Topic: Using an old car alternator to generate electricity...
Replies: 28
Views: 6851

Re: Using an old car alternator to generate electricity...

Ok, I see what you're saying. The thing is though, that the resistance goes down with less power draw because the regulator is mucking about with the field automatically. A PMA can't be regulated that way, so the resistance would be the same regardless of power usage.
by RebelRider.Mike
Oct 26 2017 3:46pm
Forum: Alternative Energy
Topic: Using an old car alternator to generate electricity...
Replies: 28
Views: 6851

Re: Using an old car alternator to generate electricity...

That's a good point. With the electromagnet, the field could be made weaker and therefore the rotor would be easier to turn. No sense in putting work into electricity I don't need. There ain't no such thing as a free lunch. You get the power out that you put in, minus efficiency. Changing field str...
by RebelRider.Mike
Oct 26 2017 2:43am
Forum: Alternative Energy
Topic: Using an old car alternator to generate electricity...
Replies: 28
Views: 6851

Re: Using an old car alternator to generate electricity...

To me, exercise seems like a whole lot of work without getting anything done. You could leave the motors turned off on the ebikes, and ride them as pedal bikes to your destinations. That would get you more exercise while getting something done. ;) Hm... Perhaps I'll charge the eBike with the "power...
by RebelRider.Mike
Oct 26 2017 2:40am
Forum: Alternative Energy
Topic: Using an old car alternator to generate electricity...
Replies: 28
Views: 6851

Re: Using an old car alternator to generate electricity...

I hooked up one of my DIY PMA alternators to a Schwinn stationary exercise bike and mounted a 12 V portable TV in front. You will be amazed at how much work it is to pedal enough power for even a small TV. Sold that contraption in a garage sale right away. That's a good point. With the electromagne...
by RebelRider.Mike
Oct 25 2017 6:15pm
Forum: Alternative Energy
Topic: Using an old car alternator to generate electricity...
Replies: 28
Views: 6851

Re: Using an old car alternator to generate electricity...

There is a website called "Otherpower.com", which is about alternative methods of generating electricity for an off-grid home. they have a chat forum called "fieldlines" which has some older posts in their archive for using car alternators. These posts have quite a bit of conversion detail, and the...
by RebelRider.Mike
Oct 25 2017 12:14pm
Forum: Alternative Energy
Topic: Using an old car alternator to generate electricity...
Replies: 28
Views: 6851

Re: Using an old car alternator to generate electricity...

Fun to play around with. What do you plan to use to spin the alternator? For now, I'm thinking of putting it on a stationary bike. Maybe charge batteries or something. I could certainly use the exercise! I can see that for a wind turbine, it would pretty much have to be modified to a PMA, or you'd ...
by RebelRider.Mike
Oct 25 2017 11:41am
Forum: Alternative Energy
Topic: Using an old car alternator to generate electricity...
Replies: 28
Views: 6851

Re: Using an old car alternator to generate electricity...

Is this good while you're still using it on a car? If so why do they build them the way they do? Do they still make cars with as little as 25-50 amp alternators? I read that my Mustang is 135a and my diesel pickup is 143a. I initially thought that the voltage regulator takes the output from the alt...
by RebelRider.Mike
Oct 25 2017 11:26am
Forum: Alternative Energy
Topic: Using an old car alternator to generate electricity...
Replies: 28
Views: 6851

Re: Using an old car alternator to generate electricity...

Don't know if you are capable, but, if you take the alternator apart and carefully/forcefully separate the 2 halves of fingers/claws on the rotor, you can remove that field coil inside and replace it with 2 ring magnets and press it back together. Thanks, I looked into that, and the rotor is packed...
by RebelRider.Mike
Oct 24 2017 12:47pm
Forum: Alternative Energy
Topic: Using an old car alternator to generate electricity...
Replies: 28
Views: 6851

Using an old car alternator to generate electricity...

I have an old alternator off a 1981 Civic Wagon. The engine is kaput, but it still has lots of good parts. Like the alternator. I made a note of each color wire was attached to the alternator before removing it, and also found a wiring diagram so I could identify the function of each connection: htt...
by RebelRider.Mike
Oct 21 2017 8:27am
Forum: E-Bike General Discussion
Topic: Laptop Powered E-Bike
Replies: 21
Views: 1768

Re: Laptop Powered E-Bike

Well, I dumped a lot of info in my last post, but didn't really draw any conclusions. As far as new cells vs. old ones, I still think the harvested cells are the way I want to go. This is mainly because I'm harvesting cells anyway for multiple projects, and I'v got the time to process and build the ...
by RebelRider.Mike
Oct 18 2017 9:00am
Forum: E-Bike General Discussion
Topic: Laptop Powered E-Bike
Replies: 21
Views: 1768

Re: Laptop Powered E-Bike

ddk, I think you're right, and Washington's limit is 1000W. I've also read that the controller is the unit to base power requirement calcs on, and also, don't believe the Watt rating. Read the specs and multiply the max Voltage with the max Amps (continuous, that is) to get the real Watt rating. So ...