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Discussion Starter #1
Many have talk bad about some things?I have on my web page, but remember one thing I do have a patent on my advance rotary piston engine.
I do know mechanics and more for over 20 years, most of you have?not even rebuild a basic engine.
I don't talk bad about your?back ground?do?I, I experiment and spend many hours testing? new ideas and more.
I have a lathe,cnc,mill and more to build anything?I want, when?I say that?I have tested something its not just talk.?
I do believe that the dc/ac motor needs to be improve in weight and power output, Its all about what your looking for in a EV.
If you want to go from 0 to 60 mph in 3 sec. well dont think your going to get 50 miles or more to a charge, but you can work out how fast you want to go and work your way down to that.
I like to start with the circumferense of the tire and calculate the rpms needed to go at top speed say 60mph and work backwards to the drive shaft.
Many of you have try to work with the drive shaft to the wheels, electric motor work better if you get the average of 1500 to 2000 rpms.
This pulls less amps and also less heat on the motor and controller, in other words gearing the right way is best for any EV, not 0 to 60 in 3 sec.
This is why a lighter motor with a bigger rotor is much better then a small dc/ac motor.
I am building a 20" magnet rotor with a outer dc pulse field, this will have a greater torque for less amps needed.
Top rpms is less then 2500, like a 48v at 400 amps is the same as 96v at 200 amps or 144v at 100 amps.
Instead of adding more batteries?I am adding a more powerful motor with less amps.
If a dc motor at 1000 rpms has 100 ft lb torque at 300 amps then my design has at say two times the size rotor 500 rpms at 200 ft lb torque at 150 amps.
1000x100/5252=19.04 hp and 500x200/5252= 19.04 hp
what I just did is show you how to increase your range in your ev, without more batteries.
?Tom



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Discussion Starter #4
> If you're still in development, good luck. Word of advice - even if
> people come across a little grumpy on here, it is really just a
> reaction to hearing so many "too good to be true" product concepts,
> designs, etc.

I don't know about everyone else, but what got me "grumpy" was his
implied suggestion in the original post that his design would somehow
take less than 745.6 watts to make 1 horsepower. And his assertion that
"there are better ways to run your electric car then to try to have a
dc/ac motor powering your cars."

Sorry, but this guy is obviously full of it.

> If you want to post on here for advice, or to tap into
> the wealth of knowledge - you just need to look past the doubt and
> listen to the facts that are being shared - even some of the members
> on here who may disagree with your theories can probably offer some
> genuinely valuable electrical engineering knowledge.

You mean like the knowledge that 745.6W *always* equals 1hp? Or that AC
and DC motors are your two choices? (Or that they are incredibly
efficient and lightweight enough to be almost insignificant in
automotive terms? Just what is this amazing improvement in motors, and
how could it be more than a couple percent improvement?) Yeah, that's
the sort of electrical engineering knowledge I would expect someone to
have prior to popping off about their revolutionary new electric vehicle
product designs.

BTW, I think it's unfortunate how it seems everyone has focused on
Tommey's poor grammar and presentation as the root of his poor
reception. Someone even likened him to Tesla with this
"engineering-smart+grammar-dumb" theory. The difference is that Tesla
would have brought out reams of detailed and complex mathematics to show
us his inventions, even if they had never physically been built. And he
would be right, and verifiably so. (Oh, and he also would be one of the
most famous and respected scientists of any stripe alive in the world of
his day.) It's very simple: the reason Tommey is getting a poor
reception is that he is spewing crap, not brilliant designs.

Not sorry for the harshness.

Hunter

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Discussion Starter #5
[email protected] wrote:
[snip]
> I do believe that the dc/ac motor needs to be improve in weight and
> power output, Its all about what your looking for in a EV.
> If you want to go from 0 to 60 mph in 3 sec. well dont think your
> going to get 50 miles or more to a charge, but you can work out how
> fast you want to go and work your way down to that.
[snip]

The motor needs to improve its weight and power? With about 210 lbs
of motor you can have an 11 second car (like any fast car everything
else has to set up for that too.) Actually, the one I have in mind
has a pretty good range too.

The inexpensive electric motors we in our EVs are over 80% efficient
for most of our driving use. Since modern ICEs only average an
efficiency in the low 20's percent range I think we are good there too.

1 horsepower = 745.699872 watts
Horsepower = rpm * torque / 5252
(torque in ft/lbs)
This is reality as opposed to fantasy (over unity)

I think we are good here. The fact that batteries don't store energy
as densely as combustible liquid fuels is the only issue I see. Since
the prime mover is around 4x as efficient we only need around 1/4 the
density. That is being (slowly) worked on.

>plonk<

Paul Gooch

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Discussion Starter #6
It occures to me that really great inventors don't have to tell you they
are great.

If someone feels that they have to tell you that they are great (or famous
or good looking, etc.) then they probably aren't.

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