Electrical gen and wheel set

Dawud · Mar 13, 2010

I had a very hairball thought. Is it even possible to have an engine driven alternator to power an electric hub? I am not too savvy about electrical motors or systems for it so I am throwing it out to the world.

motor_head · Mar 15, 2010

yeah you could do it but it wouldn't be worth it, you'd lose power too

Dawud · Mar 15, 2010

motor_head said:
yeah you could do it but it wouldn't be worth it, you'd lose power too

Lose power but have a decreased weight as there would be minimal batteries.

lazieboy · Mar 15, 2010

Dawud said:
I had a very hairball thought. Is it even possible to have an engine driven alternator to power an electric hub? I am not too savvy about electrical motors or systems for it so I am throwing it out to the world.

Are you talking about the wheel powered generators for lights. Or something that runs off the motor?
if it runs off motor would like more info.

Thanks

Dawud · Mar 16, 2010

lazieboy said:
Are you talking about the wheel powered generators for lights. Or something that runs off the motor?
if it runs off motor would like more info.

Thanks

The thought was to pull a trailer with a 2.5-6.5 hp motor turning a dc gen of a sort. running the feed to a small battery and then wired to the controller on bike. The connector would be like a molex for a computer.

jcchappy · Mar 22, 2010

gas produces electric. electric produces go power. desiel trains work that way. huge diesel engine turns a generator to power the train.

Dawud · Mar 23, 2010

jcchappy said:
gas produces electric. electric produces go power. desiel trains work that way. huge diesel engine turns a generator to power the train.

Yes It may be inefficient in the way of transfer, but it will make the transfer a whole lot easier. Amtrak gave me a tour of one of their engines when I was young. Most people think that the diesel is geared somehow to the wheels, but that is not so. The Transmission to do that would weigh several hundred tonnes and would take up the space of an engine by its self. I still have a 10 hp diesel in the garage. I was going to dig build a hydraulically driven trailer for bicycle with it. The point is remote powering vs getting the chain lined up and other mechanical issues. Further the point you can take the engine gear up and down to find the ideal rpm speed for the best fuel consumption rate.
Anyone know how of an electric motor or generator that can be powered by smaller gasoline engines?

coln72 · Mar 27, 2010

I dont have the details yet, but I am looking into a 50cc motor which has an inbuilt alternator. Will let you know when I know more.

yamahonkawazuki · Mar 27, 2010

Dawud said:
Yes It may be inefficient in the way of transfer, but it will make the transfer a whole lot easier. Amtrak gave me a tour of one of their engines when I was young. Most people think that the diesel is geared somehow to the wheels, but that is not so. The Transmission to do that would weigh several hundred tonnes and would take up the space of an engine by its self. I still have a 10 hp diesel in the garage. I was going to dig build a hydraulically driven trailer for bicycle with it. The point is remote powering vs getting the chain lined up and other mechanical issues. Further the point you can take the engine gear up and down to find the ideal rpm speed for the best fuel consumption rate.
Anyone know how of an electric motor or generator that can be powered by smaller gasoline engines?

IIRC a locomotive manufacturer tried transission based diesels back in the day. proved inefficient, ( i would say by weight and whatnot. and things breaking, that it went with teh currrent form of transfer

corgi1 · Mar 28, 2010

Well....I've seen that some guy in the down under has been working on an air motor,I wonder if there would be a way to capture the exhaust and filter it enough to run the air motor on a bike?

professor · Mar 29, 2010

You mean like this?
I think I did a post on my gas/electric here a bit ago.
The difficulty is getting current to the field circuit of the alternator to get it to make power.
Don't know about hub motors, I used a 24v 450w motor and chain drive. The engine pulley is NOT the big one pictured here- one to one ratio now.

Here is what it looks like now (all stealthed out)- max speed 20 mph, max voltage out of the alternator is limited to about 35v by the shear load of driving the alternator by the HF79.
Uses more fuel than a normal bike because of inefficiency, but works for me and will be legal when the governor gets around to signing the new E-bike law. Note- the bike is real heavy at 113# but the rider is light.
Handles super with the 3 inch stretch frame.

corgi1 · Mar 30, 2010

Ok,I got to see a site Craig Vetter, designer and inventor of the Windjammer fairing,Triumph Hurricane Motorcycle and fuel economy motorcycles clicked on lots of things and somehow I ended up at,,,, "agni motors site",,,,,the 95 motor seemed interesting,,,,the crag vetter site has lots of good imfo. too(sorry but I think these are worth a look see for electric power) http://agnimotors.com/95_Series_Performance_Graphs.pdf this click is only preformance graphs

Search

Electrical gen and wheel set

Dawud

New Member

motor_head

New Member

Dawud

New Member

lazieboy

New Member

Dawud

New Member

jcchappy

New Member

Dawud

New Member

coln72

New Member

yamahonkawazuki

New Member

corgi1

New Member

professor

New Member

corgi1

New Member