Comparisons on some brushless controllers!!!

[lutach]

Originally Posted by crazyjr

How did you get 167 amps? If thats a Mr constructor truck, Does it have a center diff? or, is it like the TC3 (spur towards the rear)?

That is a Mr. Constructor truck and the spur is a lot like the TC3 in the rear, but Mr. C put a slipper clutch there as well. Awesome truck. Here are 2 videos of it:
http://www.youtube.com/watch?v=6duAnWLQlJY (Forgot the crystal LOL)
http://www.youtube.com/watch?v=Cpe_frO--Vw (That's my daughter playing soccer with her uncle, she's a ball hugger LOL)

The 167A are just spikes from full throttle. The batteries that I'm using are amazing. They are 25C rated and can handle 30C without a sweet and 50C bursts. I know it is similar to TP and FP, but with a big difference, they don't puff. They run cooler and deliver the power much better. I will be getting the 5000mAh packs hopefully by Wed.

[nativepaul]

what cells are those?

[crazyjr]

Originally Posted by lutach

That is a Mr. Constructor truck and the spur is a lot like the TC3 in the rear, but Mr. C put a slipper clutch there as well. Awesome truck.

Thats what i figured. I got mine in a Kyosho twinforce with a 2250 and 19/51 gearing, Even with 6s i can't get more than 124 amps with a center diff

[lutach]

The Schulze future-18.97KWF ran awful. Only 9 seconds and it stopped. Lets just say it has a little heating issue. One good thing I should mention, it is as smooth as the MGM on start ups.

Originally Posted by crazyjr

Thats what i figured. I got mine in a Kyosho twinforce with a 2250 and 19/51 gearing, Even with 6s i can't get more than 124 amps with a center diff

Are you using the eagletree? I too have not been able to go beyond 124 amps with the eagle tree, IIRC it is only rated for 100 amps. I don't think that lutach is using an eagletree but some other power analyzer....


Bye

[lutach]

Originally Posted by cemetery gates

Are you using the eagletree? I too have not been able to go beyond 124 amps with the eagle tree, IIRC it is only rated for 100 amps. I don't think that lutach is using an eagletree but some other power analyzer....


Bye

I'm using a BNB Products DPR-II-150. It is rated for 150, but it's reading beyond that all the time. Blaine from BNB also said, "The best way to measure high current is to add a calibrated shunt across the DPR's current sensor." Which I have no idea what it means.

[BrianG]

Originally Posted by lutach

I'm using a BNP Products DPR-II-150. It is rated for 150, but it's reading beyond that all the time. Blaine from BNP also said, "The best way to measure high current is to add a calibrated shunt across the DPR's current sensor." Which I have no idea what it means.

What exactly is a DPR-II-150? Any links?

A shunt is simply a very low and very precise resistor placed in series between the source and the load. Usually looks like a thick wire. When current flows through it, a small voltage drop is generated, which can be measured with a simple voltmeter. The trouble is selecting the right size shunt value so that you can get a good reading, yet small enough not to suck up too much of your voltage. And then there is the power dissipation factor. I wouldn't want to drop more than 0.1v at 200A. Even at 0.1v and 200A, the shunt would have to be rated for at least 20w.

BTW: Eagletree does make an add-on sensor that measures up to 300A, but isn't explicitly said to be compatible with the micro e-logger. IIRC, it is for the other recorder unit.

[lutach]

Originally Posted by BrianG

What exactly is a DPR-II-150? Any links?

A shunt is simply a very low and very precise resistor placed in series between the source and the load. Usually looks like a thick wire. When current flows through it, a small voltage drop is generated, which can be measured with a simple voltmeter. The trouble is selecting the right size shunt value so that you can get a good reading, yet small enough not to suck up too much of your voltage. And then there is the power dissipation factor. I wouldn't want to drop more than 0.1v at 200A. Even at 0.1v and 200A, the shunt would have to be rated for at least 20w.

BTW: Eagletree does make an add-on sensor that measures up to 300A, but isn't explicitly said to be compatible with the micro e-logger. IIRC, it is for the other recorder unit.

Brian,

It is BNB Products, I typed BNP. Here is the link: http://www.bnbproducts.com/

I have to admit, I was a little scared trying my Schulze 18.97KWF. Good thing it only thermaled. I reset it and it is working fine.

[crazyjr]

Originally Posted by cemetery gates

Are you using the eagletree? I too have not been able to go beyond 124 amps with the eagle tree, IIRC it is only rated for 100 amps. I don't think that lutach is using an eagletree but some other power analyzer....


Bye

Yeah, a micro model