Lowering BL Revo CoG.

[zeropointbug]

Well, I don't know what you think 'kind' of power an outrunner has, all I know is that an electric motor has watts, and the wattage is a product of speed vs. torque, and every motor has 100% torque at zero rpm and drops from 0rpm to max rpm. I really don't think there is anything different in an outrunner, except for motor inertia (although it's spinning alot slower, so that is near canceled out), it has many times more torque, but spins many times slower, so power ends up being the same as well.

Unless I didn't get the idea you were trying to convey? Explain in more detail?


On a side note, I posted some pics of roughly what I was thinking of when I said tilting the trans and making a mount for the motor in the center of the chassis, and lowering it. Check it out. Looks like a pretty balanced setup?

[zeropointbug]

The batteries would be mounted on CF angle mounts and will be sitting 1 inch lower than in the picture.

[sikeston34m]

Originally Posted by zeropointbug

Well, I don't know what you think 'kind' of power an outrunner has, all I know is that an electric motor has watts, and the wattage is a product of speed vs. torque, and every motor has 100% torque at zero rpm and drops from 0rpm to max rpm. I really don't think there is anything different in an outrunner, except for motor inertia (although it's spinning alot slower, so that is near canceled out), it has many times more torque, but spins many times slower, so power ends up being the same as well.

Unless I didn't get the idea you were trying to convey? Explain in more detail?


On a side note, I posted some pics of roughly what I was thinking of when I said tilting the trans and making a mount for the motor in the center of the chassis, and lowering it. Check it out. Looks like a pretty balanced setup?

yep, Watts is Watts but could there be something more? LOL

KV versus gearing versus final efficiency rating. I get that.

That's an interesting way to look at tranny position. I like that, but how are you going to secure it?

This should be good.

[zeropointbug]

Isn't there a website that is going to be doing dyno tests for popular motors in R/C? That would put this debate to rest I think, just to see a torque/power curve of some of these motors. Another thought, maybe it's the ESC firmware that is causing a different 'feel' or level of power between a in and outrunner type?

As for the mounting of the transmision, I was thinking about getting a small bracket made that screws into the aluminum plate on the trans and goes around and mounts like the regular plastic stand-offs. I would have to grind the plastic mounts away of course.

[sikeston34m]

Originally Posted by zeropointbug

Isn't there a website that is going to be doing dyno tests for popular motors in R/C? That would put this debate to rest I think, just to see a torque/power curve of some of these motors. Another thought, maybe it's the ESC firmware that is causing a different 'feel' or level of power between a in and outrunner type?

As for the mounting of the transmision, I was thinking about getting a small bracket made that screws into the aluminum plate on the trans and goes around and mounts like the regular plastic stand-offs. I would have to grind the plastic mounts away of course.

If there is a website like that, I'm not aware of it. I sure hope there is one in the future.

Watts is a measure of the power put into a motor. Volts X Amps

Actual work being done is HP and Torque values.

Efficiency is how well the incoming power is utilized. Watts changed into work versus watts burned off as heat energy.

I like to keep an open mind. Not everything that will be discovered has been discovered.

There is alot to be said about Motor winding also. Then there is the scale of measure for the strength of a magnet. With limiting factors being saturation and demagnetization temperature.

I've done alot of research. I get lost around the point where it gets in depth about eddy currents in the Magnetic Harmonics. I do know this also effects efficiency. Clashes or opposing forces that spend energy fighting each other instead of doing work.

Your setup will be almost dead on as far as being centered.

I really like the look.

[zeropointbug]

I thought I would update the progress I have made making my Revo more and more 'race worthy'... and where I have got it at now is nothing short of amazing, performance wise. Everyone at the track comments on how it doesn't 'look' like a Revo when racing, more like a truggy they say. I would have to agree, the weight distribution and center of gravity seems like it is just right for the chassis, and really seems to shine in the handling department, compared to a stock Revo 3.3.

The battery mounts are 1.5" CF angle from SierraComposites.com, the mounting brackets (alum.) are made from 1/2" x 1/8" 6061-T6 strips, a little small, but has held up fine so far after some pretty nasty crashes. The packs actually sit 1/4" lower than the E-revo battery compartments, and are a few mm above the bottom level of the servo guards.

The Rx pack mount is made from some CF I had laying around, which I cut, and glued with some CA glue, sticky Velcro all-around, including main power packs, which take the securing to the next level, really works well.

I was worried about the CF getting quite scratched and damaged from landings on rocks, and scrapping on stuff that commonly occurs at a track.

Enjoy.

[zeropointbug]

More.

[sikeston34m]

Originally Posted by zeropointbug

More.

Very Nice ZPB!

That Quark looks just like the original Quark that you first modded and posted about a few years ago. Is that the same one?

I see you're putting those Hyperion packs to good use.

Is that a receiver pack I see in front of the motor?

Nice progress! That's gonna be a mean one.

[zeropointbug]

More.