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Forum: Brushless 05.31.2009, 11:08 AM
Replies: 50
Views: 12,944
Posted By Oppressor
If you really want to run all day long at 80 mph,...

If you really want to run all day long at 80 mph, you will really need a good esc and motor.

While the brushless record for a mt was done with a neu 1521 i really don't expect that setup to run...
Forum: General Electric 03.18.2009, 08:12 PM
Replies: 10
Views: 10,341
Posted By Oppressor
Also voltage allow a line to let pass more...

Also voltage allow a line to let pass more amps(for more total power). That why electricity company use extreme voltage despite the inherent danger.
Forum: Castle Creations 11.19.2008, 10:52 AM
Replies: 18
Views: 5,730
Posted By Oppressor
I might be wrong but remembering the old spec...

I might be wrong but remembering the old spec that were thrown around(200 amps continuous) the MMMM would be worst for 5s than the MMM as it would have to use higher resistance cap which would be...
Forum: Castle Creations 11.17.2008, 10:02 AM
Replies: 18
Views: 5,730
Posted By Oppressor
Will it be 12s with mechanical brake?

Will it be 12s with mechanical brake?
Forum: HPI Savage 11.15.2008, 08:51 AM
Replies: 21
Views: 6,255
Posted By Oppressor
Gst 7.7 tires and wheels sure look pimp. Nice...

Gst 7.7 tires and wheels sure look pimp. Nice truck.
Forum: Brushless 11.15.2008, 08:45 AM
Replies: 15
Views: 8,250
Posted By Oppressor
That totally depend on what he want to do. ...

That totally depend on what he want to do.

With a MMM, it would sure be better to attempt speed run on 6s instead of 4s.

For racing, yeah most place probably ask for 4s.

On a pure price...
Forum: Brushless 11.14.2008, 06:40 PM
Replies: 15
Views: 8,250
Posted By Oppressor
Generally speaking one should go as high in volt...

Generally speaking one should go as high in volt as warranted by the manufacturer(an know to be reliable) as volts help to make amps go "through" and hence power by the same token circuitry easier.
...
Forum: Brushless 11.11.2008, 07:06 PM
Replies: 31
Views: 6,523
Posted By Oppressor
That's good but it doesn't change the fact that...

That's good but it doesn't change the fact that 12s and 100 amp seem too little to me for an 1/5 and 40+ mph...
Forum: Brushless 11.10.2008, 03:39 PM
Replies: 31
Views: 6,523
Posted By Oppressor
Peoples tried to rationalize why electric motors...

Peoples tried to rationalize why electric motors were so overwhelming in comparison to an nitro engine. The truth is that hp is still 750 watts no matter how you look and that torque should affect...
Forum: Brushless 11.10.2008, 12:21 PM
Replies: 31
Views: 6,523
Posted By Oppressor
That only depend on the gearing and general...

That only depend on the gearing and general terrain. Gear it for 25 mph instead of 40 and it would survive just fine. Remember that some kid jeep can bear said child with 2 550 brushed can...

For...
Forum: General Discussion 11.08.2008, 08:50 PM
Replies: 48
Views: 12,509
Posted By Oppressor
If it was me, i would stay away from any...

If it was me, i would stay away from any treatment involving heat. It might undo the heat treatment that the shaft probably received hence weakening it.
Forum: Brushless 11.07.2008, 10:41 AM
Replies: 67
Views: 51,384
Posted By Oppressor
I've seen more powerful motors around. In fact...

I've seen more powerful motors around. In fact Hacker have a motors that is 50% more powerful than even the mighty 3080...

http://www.aero-model.com/motordetails.aspx?series=A100/200&style=6
...
Forum: Brushless 11.06.2008, 04:17 PM
Replies: 27
Views: 8,256
Posted By Oppressor
Well my assumption started by if the kb45 is 80%...

Well my assumption started by if the kb45 is 80% efficient. If it's more efficient than that then of course i would be wrong and of course i don't know for sure.

I never denied the radical torque...
Forum: Brushless 11.06.2008, 12:32 PM
Replies: 27
Views: 8,256
Posted By Oppressor
Kb 45xl is about the same size as an lehner 2250...

Kb 45xl is about the same size as an lehner 2250 just that it's no where nearly as efficient.

A 557g 80% efficient motor should heat up as much as an 280g 90% efficient motor (neu 1512) while...
Forum: Brushless 11.05.2008, 12:14 PM
Replies: 8
Views: 4,527
Posted By Oppressor
Simple math. The battery can sustain 25c which...

Simple math. The battery can sustain 25c which mean 25x their amp rating.

Total capacity(watt) is a product of volt x amps/hour.

So for the neu energy it's: 6X3.7v(6s) X 5.5 amps or 122.1
...
Forum: Brushless 11.04.2008, 08:22 PM
Replies: 8
Views: 4,527
Posted By Oppressor
Let put it this way. Both enerland cell if my...

Let put it this way. Both enerland cell if my memory is right.

The neu energy have 122.1 watt/hour of energy reserve and are able to sustain a draw of 3052.5 watts hours

The polyquest have 111...
Forum: Brushless 10.31.2008, 08:51 AM
Replies: 18
Views: 8,868
Posted By Oppressor
85%? That 5% less than a normal neu which mean...

85%? That 5% less than a normal neu which mean that they should heat up 50% more over ambient temperature for the same work done.

Apparently you get what you pay for.
Forum: General Discussion 10.31.2008, 08:35 AM
Replies: 15
Views: 10,192
Posted By Oppressor
Keep in mind that dewalt 18v volt motors aren't...

Keep in mind that dewalt 18v volt motors aren't really stronger than their fellow 14.4v and 12v motors which are also 820 size motors. If you want to run those motors on 4-5s i would consider the...
Forum: General Discussion 10.30.2008, 02:32 PM
Replies: 48
Views: 12,509
Posted By Oppressor
I believe that it's the official specs they have...

I believe that it's the official specs they have on that website, which mean 18v. It should run best at 5-6s.

Reading back i noted that i was wrong. I originally though that you wanted to run it...
Forum: General Discussion 10.30.2008, 12:28 PM
Replies: 48
Views: 12,509
Posted By Oppressor
Keep in mind though that efficiency will fall...

Keep in mind though that efficiency will fall faster if they are run at lower voltage.
Forum: General Discussion 10.30.2008, 11:30 AM
Replies: 48
Views: 12,509
Posted By Oppressor
As per that robotwars wiki, about 81% for the old...

As per that robotwars wiki, about 81% for the old style can

http://www.robowars.org/wikka/DewaltDrivetrain
Forum: General Discussion 10.29.2008, 07:53 PM
Replies: 48
Views: 12,509
Posted By Oppressor
In fact there is a few more powerful brushed...

In fact there is a few more powerful brushed motor at that size. One of the most fearsome one are astro cobalt motors reaching 85 to 88% efficiency iirc.
...
Forum: General Discussion 10.27.2008, 10:52 AM
Replies: 48
Views: 12,509
Posted By Oppressor
Remember that the mamba max won't have to switch...

Remember that the mamba max won't have to switch phase with a brushed motors so it should be able to handle 200-300 amps instead of 100(Of course i doubt that Castle would warranty it at those amp...
Forum: Brushless 10.26.2008, 06:40 PM
Replies: 7
Views: 2,361
Posted By Oppressor
I know that i am new here but logic tell me that...

I know that i am new here but logic tell me that if 4 poles motors were twice as good as two pole motors there would be no two poles motors on the market and even if a four pole motors had really two...
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