Why go brushless?

[slow_goin]

Ive always used brushed motors in my crawlers due to there cost and so far no complaints motor matnence consists of every once in a while take the motor out and shoot it with some electrical circuit cleaner just to get the dust out and it runs strong and reliable have had the motor ever scence i got my ax10 two years ago no issues and this motor has been submerged in saltwater 3 times now (i crawl on the beach)and its still kicking wheres id be out buka bux if it were a brush less system if i dump my crawler into a pool its like 15bux for a used esc lol so i think brushed is the way to go just my opinion."thumbsup"

 

[Missy]

i cant see the need for it. i used to race touring cars before brushless was around and after every race i was turning the com and new brushes, and mod motor guys would do it on the saturday evening after qualifying of a 2 day race. with crawling, ive gone a whole year without rebuilding the motor and its in great shape still. with the lower current draw and loads of a crawler it doesnt wear a brushed motor much. looking from a cost standpoint, a brushed motor is the way to go. as far as other things, i cant really comment much, i have one friend with a goat brushless, everyone else runs brushed.

Yes, we have a carpet track at our warehouse here and the on road cars just scream with a brushless system, and the lack of maintenance makes them necessary. I just haven't seen the need for them is crawlers.

 

[Missy]

Ya need a good sensored bushless setup to get any low speed control for crawling. Something like a tekin rs/21.5 is alot of $ for not much gain in a crawler. Now in a losi, brushless is a good thing but for anything else it's overkill.

I appologize, I'm a little confused. What do you mean you need one for low-speed control? Do you not have low-speed control with the brushed system?

 

[BEELZEBOB]

I appologize, I'm a little confused. What do you mean you need one for low-speed control? Do you not have low-speed control with the brushed system?

low end speed control on a brushed motor with an ESC like a HH torquemaster or a Mamba is unbeleivably smooth.

you CANNOT acheive the same low end speed control and torque wih a BL motor UNLESSS you done be runnin worm gears.

So in a LCC or worminator, Go BL and not much else.

every single other crawling application, go brushed.


and for all of you talkin wheel speed, my 35T hanwound and a 3s or 4s will burn you bitch asses (static backflips kickass!)

 

[JesterSpec]

He means sensored, if you get sensorless the motor will cog really bad at such low RPM.

I appologize, I'm a little confused. What do you mean you need one for low-speed control? Do you not have low-speed control with the brushed system?

 

[Missy]

low end speed control on a brushed motor with an ESC like a HH torquemaster or a Mamba is unbeleivably smooth.

you CANNOT acheive the same low end speed control and torque wih a BL motor UNLESSS you done be runnin worm gears.

So in a LCC or worminator, Go BL and not much else.

every single other crawling application, go brushed.


and for all of you talkin wheel speed, my 35T hanwound and a 3s or 4s will burn you bitch asses (static backflips kickass!)

Ah, okay I understand.
thank you.
And the wormdrive, that is in the micro crawlers too... it stops the wheels from turning? that is all I really know about it. Is that correct?

 

[Missy]

He means sensored, if you get sensorless the motor will cog really bad at such low RPM.

okay, so since the brushless system is meant for hitting such high speeds it can't run well at low speeds. It gets guttless and coggs, racers have that problem if they are running low end NIMH batteries with heavy duty brushless systems.

 

[turmoil]

thanks

alot of great info i was tossed up about going brushless, but now i am going to stay with my brushed system"thumbsup"

 

[indiana mudcat]

Sensored brushless does not cog, it's butter smooth with a ton of torque.

 

[Missy]

Sensored brushless does not cog, it's butter smooth with a ton of torque.

Even with out the wormdrive?

 

[indiana mudcat]

Even without wormdrive.

 

[chafee]

I work at A Main Hobbies, I have a question for a customer (and I am very curious):
what are the benefits of going brushless in a crawler? and What are you guys running as far as brushless motors?
(I've read that the high KV brushless motors just cogg, or get jumpy.)

'cause your rich!

 

[black92coupe]

I was wondering the same thing, thanks for asking the question..

x2 !

 

[Missy]

Even without wormdrive.

okay, man now I am just confused again. Why is a sensored brushless system so much more functional in a crawler? you get more torque and no cogging.... well that sounds perfect. You got me all twisted again, hahaha

 

[indiana mudcat]

sensored brushless= more run time and higher wheelspeed, no maintence (other than a drop or two of oil on the bearings now and then)
brushed= cheaper

Thats the basic's it's all very small difference's until you throw worms in the mix, the worms offer more reduction (requiring more speed from the motor) at the cost of being ineffient (sp) they have a lot of drag and create alot of heat. The drag creates heat in the motor which kills the brushes.

In the future you won't see any big advances (if any) with brushed setups, but brushless will continue to improve.

 

[Missy]

sensored brushless= more run time and higher wheelspeed, no maintence (other than a drop or two of oil on the bearings now and then)
brushed= cheaper

Thats the basic's it's all very small difference's until you throw worms in the mix, the worms offer more reduction (requiring more speed from the motor) at the cost of being ineffient (sp) they have a lot of drag and create alot of heat. The drag creates heat in the motor which kills the brushes.

In the future you won't see any big advances (if any) with brushed setups, but brushless will continue to improve.

I see. Right on. Thank you for explaining this to me, I do appreciate it. "thumbsup"

 

[Rob C]

okay, so since the brushless system is meant for hitting such high speeds it can't run well at low speeds. It gets guttless and coggs, racers have that problem if they are running low end NIMH batteries with heavy duty brushless systems.

Let's see if someone can answer this...or if this is even the place to ask;

Everyone keeps saying that brushless systems don't run well at low speeds, thus they're not an ideal fit for crawling. But what if you were to run a 30:1 transmission reduction and a 3:1 axle reduction? It's actually a further reduction than the Worm's 40:1. Has this been done before? (excuse me if that's a dumb question...i just got here)

 

[indiana mudcat]

Let's see if someone can answer this...or if this is even the place to ask;

Everyone keeps saying that brushless systems don't run well at low speeds, thus they're not an ideal fit for crawling. But what if you were to run a 30:1 transmission reduction and a 3:1 axle reduction? It's actually a further reduction than the Worm's 40:1. Has this been done before? (excuse me if that's a dumb question...i just got here)

I'd be willing to bet 90% or more of the people saying that have never drove a sensored brushless system, or at least not one that was programmed right. You can read yhe HB logo's on my tires as they turn and break as many parts as you want to.

 

[Kamikaze]

I'd be willing to bet 90% or more of the people saying that have never drove a sensored brushless system, or at least not one that was programmed right. You can read Rover on my tires as they turn and break as many parts as you want to.

x2. 90% of the brushless stuff is programing. I have never had a brushless setup work good by just using the basic programing.

 

[Rob C]

x2. 90% of the brushless stuff is programing. I have never had a brushless setup work good by just using the basic programing.

That was part of why i wanted to try one out. I just want to have something to tinker with for a while.