HH Cobalt Puller- Reborn page 35!

[JohnRobHolmes]

Mann0mann- that battery isn't quite enough. For the 10t I would say you need at least a 1600 15C pack.

TK- I can't tell you if it will fit. How much room is around a normal 540 motor in the rig?

Contracted- I have 7t Pullers available for presale on the site again.

 

[JohnRobHolmes]

Cobalt Puller 7t--limited stock

I have a new batch of 7t Cobalt Pullers, 4 in stock and 40 going to the machinist on monday.

These can be shoehorned into an sw3 with an r2 tranny, but they are longer motors than a standard 540. The torque is much higher than any other brushed motor that works in a crawler. More wheelspeed, more torque, more power in general. With a 7 slot armature you also get much better slow speed control as compared to normal brushed motors. I run these in every one of my rigs now, with exception to a few scale rigs and my really fast bashers. Yes, they are in fact powerful enough to make me leave outrunner motors for a while. My avatar is the armature.

Get your foot in the door while you can, these motors get snatched up quick

http://holmeshobbies.com/product.php?productid=132&cat=0&page=1

Badgers kick ass vid: http://ca.youtube.com/watch?v=fJS4c36tcjs

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[Thorsteenster]

Good God, that is sick, great vid!

 

[JohnRobHolmes]

...

 

[TxCruzr]

Not that I need one but I had to get one

 

[cartronicshn]

Done"thumbsup"

 

[4u2nv]

Do you have something comparable to this but brushless?

 

[JohnRobHolmes]

Do you have something comparable to this but brushless?

Not really. The pullers have torque, speed, and low speed driveability. The closest brushless would be a novak goat system but they don't have the drag or torque. A fast outrunner would have the torque but not the low speed resolution.

 

[Nabil]

got one too for my prerunner/crawler

 

[cartronicshn]

Not really. The pullers have torque, speed, and low speed driveability. The closest brushless would be a novak goat system but they don't have the drag or torque. A fast outrunner would have the torque but not the low speed resolution.

Thanks guys! 29 left.

Are you serious, these have more torque than my goat systems, if so:shock:"thumbsup"

 

[JohnRobHolmes]

Yes, the stator is much larger than the magnet on the Goat. It is also longer, and has more commutation cycles per revolution. All adds up to more torque.

 

[dezrik]

Would a 7T with 21T/87T still have enough torque for crawling?

 

[Just Zach]

Just picked up 2, thanks JRH"thumbsup"

 

[JohnRobHolmes]

Would a 7T with 21T/87T still have enough torque for crawling?

Yep. You could gear it to the moon and have enough torque if your batteries would deliver the amps.

 

[Thorsteenster]

Sorry to get off topic, but what are the rpm per volt for the 10t and max volts?

 

[JohnRobHolmes]

I measured the 10t at 1800, max voltage 4s lipo.

The 7t is listed at 1800 by the manufacturer, but I think that is loaded. It actually spins closer to 2300 by my last measurements.

 

[dezrik]

So what kind of battery do you recommend? 20C 11.1v LiPO?

 

[JohnRobHolmes]

A 15C 2100 seems to do the trick on the 7t. You could use a smaller battery with 20C discharge.

 

[Mac10]

paypal sent.

thanks JRH!

anychance I will get one of those bad a$$ HH stickers with it?

 

[JohnRobHolmes]

I need to get more stickers made. Already given out about 1000 of em, and I have run out.