New SE-3 Patroller

[jgbackes]

The big improvements over the T3.

• You can charge it without having to get to home base. The T3 has a HUGE external power supply that must be used for charging
• It will fit through a standard door
• It is supposed to have some kind of anti-tipping technology

Why oh why oh why isn't there a video of the new product on their website?

The webinar they held was just HORRIBLE! Not a single video, nothing other than "It's cool, you should buy one" Their website is still not up do date with SE segways and now they add another item that makes them even less up to day.

John, please please please go back to work for them and get their web presence back in shape, their current site sucks so much.

jeff

[KSagal]

Originally Posted by airdale

All hybrid cars create reusable power while breaking, I see no difference in that it could do both coasting or breaking? Way to much assumption going on!

Wow,

Binder brakes use friction to slow a vehicle. Segway uses a different technology.

The electronic braking from segway has been the topic of many debates, on this forum and at many law making sessions where they did not understand it.

When the friction brakes reduce the speed of the vehicle there is significantly less regeneration going on. Not none, but less than an electronic braking system.

That was my point.

Also, I went on to example some of the advantages that come along with the differences with this type of braking...

Sorry if my statement was a problem.

[Tritium]

Originally Posted by airdale

All hybrid cars create reusable power while breaking, I see no difference in that it could do both coasting or breaking? Way to much assumption going on!

What he's referring to is that the motors on the Segway are used as brakes, and therefore are able to regeneratively brake.
However, since the S3 uses hydraulic/disc brakes, it won't regenerate power when braking...

I'm paraphrasing, I might be wrong

[Amimoto]

SE3 is 400 lbs without passenger, that is almost 400% heavier comparison to an i2, it's a heavy beast, when driver is mounted, it could easily weight over 600 lbs. To stop that mass traveling downhill, huge braking power is needed.

I'm sure it will have regenerative braking on SE3, it's very easy to apply via software, controlling MOSFET to redirect energy back to battery, Also an electronic braking system utilizing a motor(s) will not be able to provide any brake when it is stationary or if it is traveling at very slow speed, therefore friction brake is a must for SE3.


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[KSagal]

Originally Posted by Amimoto

SE3 is 400 lbs without passenger, that is almost 400% heavier comparison to an i2, it's a heavy beast, when driver is mounted, it could easily weight over 600 lbs. To stop that mass traveling downhill, huge braking power is needed.

I'm sure it will have regenerative braking on SE3, it's very easy to apply via software, controlling MOSFET to redirect energy back to battery, Also an electronic braking system utilizing a motor(s) will not be able to provide any brake when it is stationary or if it is traveling at very slow speed, therefore friction brake is a must for SE3.


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I agree with the first paragraph entirely.

I also agree that it will have some regenerative braking, most likely as described.

However, segway's motor driven electronic brakes do work when stationary (lock feature) and do work at slow speeds. They simply may be insufficient given the mass of the machine as listed.

As I said in my post, I see the binder brakes as essential for more than just braking however, as they will allow coasting down hills, and other more normal vehicle like functions that segways do not do... Most of us have experienced that annoying slow down on a down hill decent, and that may be a real problem for law enforcement.

[Bob.Kerns]

Originally Posted by KSagal

I agree with the first paragraph entirely.

I also agree that it will have some regenerative braking, most likely as described.

However, segway's motor driven electronic brakes do work when stationary (lock feature) and do work at slow speeds. They simply may be insufficient given the mass of the machine as listed.

As I said in my post, I see the binder brakes as essential for more than just braking however, as they will allow coasting down hills, and other more normal vehicle like functions that segways do not do... Most of us have experienced that annoying slow down on a down hill decent, and that may be a real problem for law enforcement.

Having three wheels and not needing to self-balance is part of that. One way or the other, you either have to dissipate that energy, or go faster and faster (i.e. convert it to kinetic energy).

The Segway dissipates it by storing it as chemical energy in the batteries, but that's rate limited and you run out of chemicals if the battery is fully charged. We've discussed a power resistor -- but a mechanical brake is the mechanical equivalent!

Anyway, as Amimoto notes, if they have a motor controller, they'd be foolish not to use regenerative braking where possible.

What would be innovative is if they used a pivoting platform for the rider, and kept him balanced, so he could not go flying forward on hard braking. Perhaps that's part of their "rider detect" technology. There are other ways to accomplish the equivalent thing, but the job of balancing a standing rider is essentially the same, however it is accomplished, even on 3 or more wheels.

[Mike SASeg]

According to the FAQ sheet (see the link below) the SE3 does not have regenerative braking but it has an advanced hot-swap battery system (whoop-whoop). Your buddy can bring you a fresh battery and a bag of donuts when yours runs flat. It has a semi-conventional disk brake system (rather like my bicycle). The SE3 is an overweight and overpriced tricycle; a technology throwback somewhere between a Babylonian chariot and the first 1885 Benz tricycle motorwagen car; except both those technologies were lighter. It is is also more than 6 months behind schedule. I cannot see how it can compete with existing alternatives.

Good luck Segway.

I sense an interesting business school case study coming up. It doesn't end well.

http://www.segway.com/segway-resourc...and+Spec+Sheet

[Amimoto]

Now it had been confirmed there's no regenerative braking and running the shocking 24V system (imaging the huge current needed to move the mass) .

The only technology highlight is the rider detection (weight sensor switch under foot)

I also smell the use of steel tubes on the chassis.

The only good thing is the advertised world class service and support, It is done by end user and dealers on the field..........


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[Amimoto]

I am searching for one single most important spec but nowhere can be found, which is the total energy of the battery pack.
Also range on a single charge did not mentioned, it use the word 'Infiniti' instead.

When does Segway learn how to speak like politicians?


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[Tritium]

Originally Posted by Amimoto

I am searching for one single most important spec but nowhere can be found, which is the total energy of the battery pack.
Also range on a single charge did not mentioned, it use the word 'Infiniti' instead.

When does Segway learn how to speak like politicians?


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Infiniti?
Now we're talking.
It'll definitely win over the T3 if it has an infinite battery

[sarcasm]