Small Electric Motor For Power Generation?

[EbikeAdvocate]

Hello,

I was thinking of taking one of those small 2 cylinder gas bike kits and then linking it up to a motor and then cranking up the idle so that it runs at whatever speed I need it to.... Then I could have a small hi current battery in the middle maybe like 7Ah as a buffer/ebike mode.


HUUUUUGE Range

Why? For the range, and I just like the power delivery of the electric motor. Also if I want to just turn the gas engine off and cruise on e-bike then I can do that.

Something like this even maybe haha: http://www.rcsuperstore.com/Traxxas-TRX-3-3-Engine-w-Pull-Start-IPS-Shaft-p/tra5407.htm?gclid=Cj0KEQiAnb3DBRCX2ZnSnMyO9dIBEiQAOcXYHxLQ0QTM0EYA6yqSiu_QQg_w4m0AJqiRYaAC_PfMsTYaApTQ8P8HAQ&Click=32628&utm_source=googlebase&utm_medium=shoppingengine

 

[WoodlandHills]

Why not go to Harbor Freight and get one of their knock-off Honda 1000i inverter generators? Only a few hundred bucks and you could carry a charger and charge as you rode like an i3 with a range extender.......

http://t.harborfreight.com/engines-generators/gas-engine-generators/900-peak700-running-watts-2-hp-63cc-2-cycle-gas-generator-epacarb-60338.html

On sale for $109.00

 

[EbikeAdvocate]

Why not go to Harbor Freight and get one of their knock-off Honda 1000i inverter generators? Only a few hundred bucks and you could carry a charger and charge as you rode like an i3 with a range extender.......

http://t.harborfreight.com/engines-generators/gas-engine-generators/900-peak700-running-watts-2-hp-63cc-2-cycle-gas-generator-epacarb-60338.html

On sale for $109.00

That's a good idea, how big is something like that?

Maybe I will buy a car, toss a generator in it and then make it operated by electric motor... That would be a cool affordable way for EV transportation

 

[dogman dan]

Those little generators are pretty heavy,, about 30 pounds. But they can run a typical 5 amps, 250w charger. Don't try to run one of those for hours at 800w. That gennie is very loud. I'd like one similar size that is quieter. I used to have one, but it was old, and 50 pounds. too heavy to carry on the bike, but I took it to camp sites by car to charge e bikes.

If you are going to put a motor on the bike,, why bother to generate? Just run your electric till the battery is dead, then switch to gas. Nothing wrong with a dual type idea. I'm thinking of something at least 50cc for the gas. That traxas,, is that a 3.3cc? too small I think.

Running a big electric car on a portable generator can work, but it takes a pretty big generator to do it. A smaller one would only extend range, not make it infinite. Most would just choose a hybrid car if they really need range. or rent a gas car for a longer trip if they have a shorter range electric car like a bug with lead batts.

FWIW,, about 30 pounds of electric battery can translate into 80 miles of range. So that tends to be the choice. 60 miles and I want off that bike pretty bad, 80 miles in a day is my personal best. I did build a bike capable of carrying 60 pounds of battery. Right now I have about 100 miles range worth. About 40 pounds of 48v battery.

 

[WoodlandHills]

Why not go to Harbor Freight and get one of their knock-off Honda 1000i inverter generators? Only a few hundred bucks and you could carry a charger and charge as you rode like an i3 with a range extender.......

http://t.harborfreight.com/engines-generators/gas-engine-generators/900-peak700-running-watts-2-hp-63cc-2-cycle-gas-generator-epacarb-60338.html

On sale for $109.00

That's a good idea, how big is something like that?

Maybe I will buy a car, toss a generator in it and then make it operated by electric motor... That would be a cool affordable way for EV transportation

Gosh, I don't know how big it is. Maybe you could click the link yourself and find out since you are the one with the interest...... If you are unwilling to do even that why should we do it for you? I posted the link for you, did you expect me to research it and then give you a report too?

 

[EbikeAdvocate]

Why not go to Harbor Freight and get one of their knock-off Honda 1000i inverter generators? Only a few hundred bucks and you could carry a charger and charge as you rode like an i3 with a range extender.......

http://t.harborfreight.com/engines-generators/gas-engine-generators/900-peak700-running-watts-2-hp-63cc-2-cycle-gas-generator-epacarb-60338.html

On sale for $109.00

That's a good idea, how big is something like that?

Maybe I will buy a car, toss a generator in it and then make it operated by electric motor... That would be a cool affordable way for EV transportation

Gosh, I don't know how big it is. Maybe you could click the link yourself and find out since you are the one with the interest...... If you are unwilling to do even that why should we do it for you? I posted the link for you, did you expect me to research it and then give you a report too?

I did and I did not see any measurements.

 

[EbikeAdvocate]

Those little generators are pretty heavy,, about 30 pounds. But they can run a typical 5 amps, 250w charger. Don't try to run one of those for hours at 800w. That gennie is very loud. I'd like one similar size that is quieter. I used to have one, but it was old, and 50 pounds. too heavy to carry on the bike, but I took it to camp sites by car to charge e bikes.

If you are going to put a motor on the bike,, why bother to generate? Just run your electric till the battery is dead, then switch to gas. Nothing wrong with a dual type idea. I'm thinking of something at least 50cc for the gas. That traxas,, is that a 3.3cc? too small I think.

Running a big electric car on a portable generator can work, but it takes a pretty big generator to do it. A smaller one would only extend range, not make it infinite. Most would just choose a hybrid car if they really need range. or rent a gas car for a longer trip if they have a shorter range electric car like a bug with lead batts.

FWIW,, about 30 pounds of electric battery can translate into 80 miles of range. So that tends to be the choice. 60 miles and I want off that bike pretty bad, 80 miles in a day is my personal best. I did build a bike capable of carrying 60 pounds of battery. Right now I have about 100 miles range worth. About 40 pounds of 48v battery.

Hmm, I wish batteries were just cheaper!!!

That traxxas engine revs to about 50k RPM though I think they generate a few KW by themselves.

 

[Drunkskunk]

That traxxas engine revs to about 50k RPM though I think they generate a few KW by themselves.

Traxxas TRX 3.3cc motor has a peak of 1 horsepower on a dyno. that's 0.745Kw. That's peak, it can't sustain that output for more than a few seconds. It would make much less power at an RPM it could sustain. And it uses a lot of that power cooling it's self by pushing the truck, plane, or boat through the air. It has small cooling fins because it was designed to have a very large volume of fast moving air blowing across it. That makes it very hard to cool when stationary and you would need to use most of it's power in a cooling fan setup.

If you could build a generator that produced 50 watts sustained and could survive 100 hours of run time out of a Traxxas 3.3cc motor, I would be extremely impressed.

 

[amberwolf]

I did and I did not see any measurements.

There are photos there, which show things you can make measurements of and then calculate teh rest of it, like the AC outlet plug that's on there, for instance.

 

[docw009]

I did and I did not see any measurements.

"They have eyes, but they cannot see...." exclaimed Lex Luthor in Superman I.

It weighs 38.2 pounds and you can go back to the link to get L x W x H.

But neither Lex or I would buy this. Bring it to a tailgate party, it blows up and all the guacamole spoils? Big trouble. Our group has used a small Honda for almost 8 years now..

 

[dogman dan]

FWIW, that generator is around a foot square. Others like it might be more like 9x 15 or whatever.

But 30 pounds,, can't really just sit that on top of the rear rack of normal bikes. It could carry in a cheap bob trailer, 30 pounds is about their comfortable load limit, for the knock off ones. More rides funny.

90 db is why I have not bought one yet. Or a china girl. (50 cc gas bike kit) Much louder than my 400cc scooter.

You could ride with hearing protection I suppose. Attach these to your helmet.


http://www.galeton.com/3m-trade-peltor-trade-hard-hat-mount-earmuff-x1p3e/12194-product/?utm_source=bing&utm_campaign=**Shopping: Personal Safety - JF&set=FreeShip50&utm_medium=cpc&utm_content=Personal Protective Equipment&code=M17FSA&utm_term=1100309492629&page=http://www.galeton.com/3m-trade-peltor-trade-hard-hat-mount-earmuff-x1p3e/12194-product/?utm_source=bing

 

[EbikeAdvocate]

FWIW, that generator is around a foot square. Others like it might be more like 9x 15 or whatever.

But 30 pounds,, can't really just sit that on top of the rear rack of normal bikes. It could carry in a cheap bob trailer, 30 pounds is about their comfortable load limit, for the knock off ones. More rides funny.

90 db is why I have not bought one yet. Or a china girl. (50 cc gas bike kit) Much louder than my 400cc scooter.

You could ride with hearing protection I suppose. Attach these to your helmet.


http://www.galeton.com/3m-trade-peltor-trade-hard-hat-mount-earmuff-x1p3e/12194-product/?utm_source=bing&utm_campaign=**Shopping: Personal Safety - JF&set=FreeShip50&utm_medium=cpc&utm_content=Personal Protective Equipment&code=M17FSA&utm_term=1100309492629&page=http://www.galeton.com/3m-trade-peltor-trade-hard-hat-mount-earmuff-x1p3e/12194-product/?utm_source=bing

I use a full face helmet so it shouldn't be a problem I might just have one of those bob trailers haha!!

 

[Toboldlygo]

I don't think anyone has tried this yet though I'm looking into it. My thought is to use an edge trimmer 25cc 4 cycle to run a differential that drives the bike and a Dynamo (350 watt brushed motor)so the engine can run constantly and if stopped would offer full speed to the generator.Though it's been estimated that the engine gives at best 1 HP or 700 watts, if I run it at 200 watts ( after losses) it will just keep the bike going flat road and trickle the battery pack to be able to accelerate or negotiate an incline. A Prius& Rav4 prime works the same way ( but obviously without pedals).
I'm a machinist with resources to build it, and some electronics experience so the question is, should I try or has this been attempted?