RC-Monster Forums - Holmes Cobalt Puller

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- - Holmes Cobalt Puller (https://www.rc-monster.com/forum/showthread.php?t=29629)

Dj_Sparky

03.24.2011 02:58 AM

Holmes Cobalt Puller

Hey, Sorry for posting in the wrong place but I couldn't find a Brushed forum.

Exactly how powerful is this motor? Compared to say a Castle 1515?

And by power, I mean how much force it would take to stop the motor from running @ 6s.

http://holmeshobbies.com/product.php...&cat=17&page=1

I was thinking about the 6t with the Holmes Hobbies Torquemaster ESC.

What's_nitro?

03.24.2011 09:55 AM

You're gonna blow it up if you run 6s. The 6t is 2s MAX. I'd guess it's 3500-4000 kV.

Quote:

Originally Posted by Holmes Hobbies

Recommended lipo battery-

6t- 2s only. 40a continuous
7t- 2 to 3s (3s may result in overheating). 45a continous 11.1v use, 35a continuous 7.4v use
10t- 2 to 3s. 40 amps continuous 11.1v use, 30 amps continuous for 7.4v.
14t- 3 to 6s. 35a continuous 22.2v use, 25a continuous 3s use

Slightly longer than a standard 540 motor.

They are much stronger than a regular 540 motor because of the cobalt magnets. They are no where near as powerful as a 1515.

lincpimp

03.24.2011 10:40 AM

Going by the info nitro listed above the 6t should good for 300watts or so.

A 1515 should be good for 1000watts or more.

Dj_Sparky

03.24.2011 02:34 PM

Er, I meant the 14t.

What's_nitro?

03.24.2011 10:47 PM

Ok :yes:

Let's guess the 14t is around 900kV. Thats ~20K rpm on 6s. You'll have a decent amount of torque from that setup.

But again, comparing it to a 1515 in power handling isn't really fair. :lol:

What are you putting this in anyways?

lincpimp

03.24.2011 11:02 PM

Probably a baja 5t with a 4wd conversion. Or a mini t.

What's_nitro?

03.25.2011 12:53 AM

E-bike? :oh:

Dj_Sparky

03.25.2011 05:50 AM

A cr-01.

lincpimp

03.25.2011 08:29 AM

Quote:

Originally Posted by Dj_Sparky (Post 402378)

A cr-01.

Going to run that on 6s? I ran mine with a novak 13.5 on 2s and it had too much power...

Dj_Sparky

03.25.2011 09:05 AM

Quote:

Originally Posted by lincpimp (Post 402387)

Going to run that on 6s? I ran mine with a novak 13.5 on 2s and it had too much power...

lol, yeah would be fun to see the cr-01 on 6s. But I was just wondering what kind of power it would have at 6s, doubt I will try it cause I'm guessing the drivetrain would break.

lincpimp

03.25.2011 09:08 AM

Tamiya drivetrains are pretty stout, but I think that you would reach the limit with that setup!

Dj_Sparky

03.25.2011 09:19 AM

Quote:

Originally Posted by lincpimp (Post 402389)

Tamiya drivetrains are pretty stout, but I think that you would reach the limit with that setup!

haha yeah. :P I just want a more powerful setup than the stock anyhow. The stock setup stutters when trying to climb up stuff. Cobalt puller seems to be a very nice choice, 14t on 2-3s would probably be very very torquey and not be too fast.

lincpimp

03.25.2011 10:39 AM

Yep, that would be the ticket. Given the novak 13.5t and ss esc performance I would go back to a sensored electric setup if I did it again. Or maybe a sidewinder and an outrunner. The little axi 22 series motors are badass for 1.9 rigs. I could spin all 6 wheels on my 6x6 on carpet, never stalled.

Dj_Sparky

03.25.2011 11:06 AM

Quote:

Originally Posted by lincpimp (Post 402394)

Given the power of brushless motors, would 1515 series++ stall on 6s+, or break the drivetrain, even metal drivetrains? (If it was stuck or something.)

What's_nitro?

03.25.2011 05:59 PM

Well I can tell you that a 6s/1515 combo in a Rustler will simply snap an axle, wheel hex, diff gear, and/or drive pin if it gets stuck. :mdr:

I'm not sure how that compares to the Tamiya stuff.

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