Do all brushless motors stutter?

[Zanx]

I've posted this (sort of) in the electrics forum too.

I took delivery of a EZRun 35T kit (motor, ESC, programming card) this morning. Within 30 mins it was on the Rock Force and running. Now I'm really pleased with the torque, the low speed chugging is kind of ruining it for me. Speed is well down as well as the initial Ka BLAM! when full throttle is applied.

Should I continue down the brushless road or cut my losses and go for a decent brushed setup? The old motor was a 28T Ansmann paired with a MTronics Sport Tuned 20 ESC. The only reason it was swapped out is because it had a nitro engine soft reverse setting and was no good to me when trying to get out of overbalance situations (frequent).

Thanks

[some87]

i run a mamba 25 which i got for $25 and a old Holmes Hobbies revolver (before the revolver black)$20 and i have a ton of speed and low end power. most people stay brushed because of drag break which is hard to get out of brushless. your best bet is go with a brushless/brushed esc and just try out everything but look for used stuff so you dont wast your money. look for a used mamba max esc and a brushless holmes hobbies outrunner motor if you want to stay brushless and you never have to mess with it again and it will last a life time

[chrisjlittle]

The sensored brushless motors are a lot better than the sensorless ones. The only 2 sensored brushless ESC's that I know of that are good for crawlers are the Tekin RS and the Novak Goat. They both can run brushed motors, and the RS can run sensorless, the goat is limited to 7 cells and the RS can do 3 cell lipo. And losi is coming out with a sensored brushless setup for crawling too.

[Zanx]

Decided to use the EZRun for something else and have ordered a 7T Homes Cobalt and a Mamba Max.

Hopefully it'll be here soon

[megacabcummins]

Just get ready to break stuff... That 7T is a torque monster...

[Big Mike]

Originally Posted by Zanx

Decided to use the EZRun for something else and have ordered a 7T Homes Cobalt and a Mamba Max.

Hopefully it'll be here soon

Where in the hell did you find that????

[Zanx]

Originally Posted by Big Mike

Where in the hell did you find that????

On the website. I've been stalking it for the last 2 weeks ;D

[Nova's Ark]

My personal preference is brushless out runners because of the lack of needed motor maintenance and amazing torque. It does however take proper voltage and gearing to get the most out of an outrunner through. IMO, 11 volts is the minimum voltage needed for good performance with an outrunner motor. The higher voltage allows them to start up easliy by allowing you to gear down low while the added voltage gives you back the needed wheel speed.

It takes some tuning and tweaking, but if you can create the right combo, it works very well. In my 2.2 comp rig, I run 3S lipo, CC BEC, Mamba Max, a Holmes brushless Crawl Master out runner (1000KV), 96 tooth spur gear, 18 tooth pinion, Axial trans and TLT axles. It has very good low speed resolution and is extremely smooth. However, the only way I was able to get that low a gearing is with a CDW 6mm output shaft for an Axial transmission. IMO, brushless is not a drop and in and crawl motor. You have to work at it to make it work properly. The payoff is the amazing torque and zero motor maintenance.

On a side note, my seven year old son competes and his 2.2 comp rig is set up exactly as mine except he has Axial axles. If a seven year old can compete and do quite well with a well set up brushless system...

[Zanx]

Originally Posted by Nova's Ark

My personal preference is brushless out runners because of the lack of needed motor maintenance and amazing torque. It does however take proper voltage and gearing to get the most out of an outrunner through. IMO, 11 volts is the minimum voltage needed for good performance with an outrunner motor. The higher voltage allows them to start up easliy by allowing you to gear down low while the added voltage gives you back the needed wheel speed.

It takes some tuning and tweaking, but if you can create the right combo, it works very well. In my 2.2 comp rig, I run 3S lipo, CC BEC, Mamba Max, a Holmes brushless Crawl Master out runner (1000KV), 96 tooth spur gear, 18 tooth pinion, Axial trans and TLT axles. It has very good low speed resolution and is extremely smooth. However, the only way I was able to get that low a gearing is with a CDW 6mm output shaft for an Axial transmission. IMO, brushless is not a drop and in and crawl motor. You have to work at it to make it work properly. The payoff is the amazing torque and zero motor maintenance.

On a side note, my seven year old son competes and his 2.2 comp rig is set up exactly as mine except he has Axial axles. If a seven year old can compete and do quite well with a well set up brushless system...

Unfortunately I don't have the skillset to tweak with brushless engines yet so I'm going to go for something easy to keep my interest going.

[jcboof]

That "Chugging" as you referred to it as is known as COGGING, and is VERY bad for your motor and esc. Do it long enough and watch your motor or esc go POOF!

Nothing wrong with brushed motors at all, I prefer them in crawlers because of the dependability and smoothness. Brushless is great in things that require speed such as buggies and stuff but in crawlers, There is just really not enough benefits to a brushless system to justify spending the money.
Some will argue that you dont have any brushes to burn up or coms to true on a brushless motor, Yes true but I've been running the same 55t motor in my crawler for over a year now and have not noticed any difference!