RCCrawler Forums

666 · 05-12-2008, 05:31 PM

Quote:

Originally Posted by WheelChair

Hmm... I heard there was a new A123. My source must be misinformed.

The A123's I am running are 4 volts per cell.

mattnin · 05-13-2008, 08:41 AM

Quote:

Originally Posted by 666

The A123's I am running are 4 volts per cell.

A123 in 4V nominal voltage? I don't think so.

Hey JRH,
What is a more powerful motor? The crawlmaster or revolver black? Thanks

Tanis · 05-13-2008, 09:40 AM

The crawlmaster is a little stronger

666 · 05-13-2008, 12:46 PM

Quote:

Originally Posted by mattnin

A123 in 4V nominal voltage? I don't think so.

What do I have to do, take a picture and show it to you?

mattnin · 05-13-2008, 03:34 PM

No, but I think you are referring to max charge per cell, not nominal running voltage.

666 · 05-13-2008, 05:13 PM

Quote:

Originally Posted by mattnin

No, but I think you are referring to max charge per cell, not nominal running voltage.

Thats where you went wrong you thunk.

JohnRobHolmes · 05-13-2008, 06:03 PM

a123 is 3.3v/cell nominal. Depending on the charger they can "peak" from 3.6 to to 4.2v/cell. 3.8v/cell is a standard charge to push them a bit hard, chargers with a123 mode cutoff at 3.6v/cell. They can take upwards of 4.2v each before they start to blow, but even at this high voltage the cells can be cycled again and again with little capacity loss. I accidentally charged mine to 4.2v/cell once. Didn't hurt them from what I can tell.

TURTLE · 05-13-2008, 06:17 PM

I think the Devil is refering the the milawaukee cells we are running there nominal voltage is somewhere around 4.5 and the running voltage should be 4.
But they are technically a a123 right? The same copmposition of cell, right?

JohnRobHolmes · 05-13-2008, 06:37 PM

They are not the same. Milwaulkee cells are lithium manganese. a123 is lithium nano-phosephate.

666 · 05-13-2008, 06:41 PM

Quote:

Originally Posted by JohnRobHolmes

They are not the same. Milwaukee cells are lithium manganese. a123 is lithium nano-phosephate.

The Milwaukee cells I have say A123 right on the side though.

TURTLE · 05-13-2008, 06:44 PM

Quote:

Originally Posted by JohnRobHolmes

They are not the same. Milwaulkee cells are lithium manganese. a123 is lithium nano-phosephate.

You sir are a smart man!

JohnRobHolmes · 05-13-2008, 06:52 PM

Quote:

Originally Posted by 666

The Milwaukee cells I have say A123 right on the side though.

Then they are nano phosphate. Did you take them from a Milwaukee pack directly? Dewalt had an exclusive with a123 for the cells.

Jabbajawz4life · 05-13-2008, 09:02 PM

Does anybody have a cool way of making license plates.And I may know but do i print out a picture of one that i really like.And how do I make sure that it is 1/12 scale.

JohnRobHolmes · 05-13-2008, 09:07 PM

Your asking the wrong guy. I would measure a plate in inches, divide by 12 for the scale size, and just print a few out on my printer and put it under tape.

I'm more of an electronics type of guy, not so much a scale guru.

Col_Sanders · 05-14-2008, 08:46 AM

How does your handwound 35t compare to the 35t Warrior?

Karadjas · 05-14-2008, 10:31 AM

Would you recommend a HHH for a go-fast clod? Which one? I want wheelspeed for huge roosts with Maxx-size Paddles and torque to break traction on dirt with HPI Dirt Claws. I'd really love to run 12 cells just for bragging rights.

Heavy go-fast clod, 1/6 tuber.. maybe I'm asking too much?

JohnRobHolmes · 05-15-2008, 08:06 PM

Quote:

Originally Posted by Col_Sanders

How does your handwound 35t compare to the 35t Warrior?

They are very similar, but mine use a two magnet can instead of a 4 magnet. It makes a bit more torque at a small sacrifice to speed. Otherwise they are built with the same parts, and probably by the same winders.

Quote:

Originally Posted by Karadjas

Would you recommend a HHH for a go-fast clod? Which one? I want wheelspeed for huge roosts with Maxx-size Paddles and torque to break traction on dirt with HPI Dirt Claws. I'd really love to run 12 cells just for bragging rights.

Heavy go-fast clod, 1/6 tuber.. maybe I'm asking too much?

Hmmm, maybe a 21t or 17t? I have never set up a clod for really fast running so I am in the dark on that one.

Mac10 · 05-15-2008, 10:32 PM

JRH-
I am looking to cut weight in my 2.2 rig and want to go from a 35t warrior to an extremely light and small in size bl setup.

which BL motor do you recommend?
I also want it to be as smooth as possible.
with that being said how much lighter would we be talking if you happen to know?

also I am running a 2cell lipo if that helps in making a decision
thanks!

JohnRobHolmes · 05-16-2008, 07:13 AM

You will drop about 2.5 ounces going to a revolver. You will drop almost 4 ounces going to a 2215 sized outrunner. On 2 cell lipo you will really have to watch the gearing, as it will be easy to overgear and get stalling issues. An outrunner wont be as smooth as a brushed motor either- no way around that.

Karadjas · 05-16-2008, 08:25 AM

Quote:

Originally Posted by JohnRobHolmes

Hmmm, maybe a 21t or 17t? I have never set up a clod for really fast running so I am in the dark on that one.

I see the 17t has a ~3700kv rating, will it take 12cells? That's 2 6-cell packs in series, 2 17turns in parallel. On 14.4v and stock gearing in a clod axle with maxx wheels, that should be ~45kmh, that's 28mph. The 21t should do 22mph...

Do you carry any ESCs that can handle my setup? I'm thinking MM, but I don't know if it can handle 2 17ts or 21ts in parallel. Heatsinks on the motors, btw...

05-13-2008, 09:02 PM	#833
Jabbajawz4life Newbie Join Date: Apr 2008 Location: Chicago Posts: 4	How do I make a License Plate Does anybody have a cool way of making license plates.And I may know but do i print out a picture of one that i really like.And how do I make sure that it is 1/12 scale.

05-15-2008, 10:32 PM	#838
Mac10 Rock Crawler Join Date: Apr 2006 Location: I hope you SHUT UP!!! Posts: 716	JRH- I am looking to cut weight in my 2.2 rig and want to go from a 35t warrior to an extremely light and small in size bl setup. which BL motor do you recommend? I also want it to be as smooth as possible. with that being said how much lighter would we be talking if you happen to know? also I am running a 2cell lipo if that helps in making a decision thanks! Last edited by Mac10; 05-15-2008 at 10:35 PM.

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05-13-2008, 09:40 AM	#823
Tanis Keep it real Join Date: Jun 2006 Location: Yakima,WA Posts: 6,532	The crawlmaster is a little stronger

05-13-2008, 03:34 PM	#825
mattnin Rock Stacker Join Date: Feb 2006 Location: Grand Junction Posts: 91	No, but I think you are referring to max charge per cell, not nominal running voltage.

05-13-2008, 06:03 PM	#827
JohnRobHolmes owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down! Posts: 20,290	a123 is 3.3v/cell nominal. Depending on the charger they can "peak" from 3.6 to to 4.2v/cell. 3.8v/cell is a standard charge to push them a bit hard, chargers with a123 mode cutoff at 3.6v/cell. They can take upwards of 4.2v each before they start to blow, but even at this high voltage the cells can be cycled again and again with little capacity loss. I accidentally charged mine to 4.2v/cell once. Didn't hurt them from what I can tell.

05-13-2008, 06:17 PM	#828
TURTLE Gettin’ back on the horse Join Date: Feb 2006 Location: Hoonsville Posts: 6,671	I think the Devil is refering the the milawaukee cells we are running there nominal voltage is somewhere around 4.5 and the running voltage should be 4. But they are technically a a123 right? The same copmposition of cell, right?

05-13-2008, 06:37 PM	#829
JohnRobHolmes owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down! Posts: 20,290	They are not the same. Milwaulkee cells are lithium manganese. a123 is lithium nano-phosephate.

05-13-2008, 09:07 PM	#834
JohnRobHolmes owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down! Posts: 20,290	Your asking the wrong guy. I would measure a plate in inches, divide by 12 for the scale size, and just print a few out on my printer and put it under tape. I'm more of an electronics type of guy, not so much a scale guru.

05-14-2008, 08:46 AM	#835
Col_Sanders RCC Addict Join Date: Jan 2007 Location: Arkansas Posts: 1,782	How does your handwound 35t compare to the 35t Warrior?

05-14-2008, 10:31 AM	#836
Karadjas Quarry Creeper Join Date: Jan 2008 Location: Cyprus Posts: 321	Would you recommend a HHH for a go-fast clod? Which one? I want wheelspeed for huge roosts with Maxx-size Paddles and torque to break traction on dirt with HPI Dirt Claws. I'd really love to run 12 cells just for bragging rights. Heavy go-fast clod, 1/6 tuber.. maybe I'm asking too much?

05-16-2008, 07:13 AM	#839
JohnRobHolmes owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down! Posts: 20,290	You will drop about 2.5 ounces going to a revolver. You will drop almost 4 ounces going to a 2215 sized outrunner. On 2 cell lipo you will really have to watch the gearing, as it will be easy to overgear and get stalling issues. An outrunner wont be as smooth as a brushed motor either- no way around that.

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