Bondonutz

iTrader: (48)

Thanks

Bondonutz

iTrader: (48)

Cost is everything to a lot of folks, especially beginners in this hobby. Sensored without a doubt more costly, to some it doesn't matter, to some like myself just feel it's unnessasary extra expense for weekend racing.

Casper

iTrader: (34)

I have not driven most of the sensorless motors out there. I just know what I felt with my 8th scale. It was not something that was drastic or could not be compensated for but I could tell the motor was not responding as consistant to throttle input for jumping as I would have liked it to. Sensored motors are just more consistant. This is not say sensorless does not work or even work well. There are a lot of very good sensorless systems but like Randy said it has been proven many times sensored producess better more consistant lap times. The level of experience you have will determine if that means anything to you. Again given a choice I will always pick sensored as it is better. Is sensorless good enough. Sure it may be most people and applications.

The Pro 4 motors will have a little more bottom end and a little more overall power. They are also ~2.5oz lighter. 550 motors a little softer on the bottom but as good or maybe slightly better top. The guys testing showed slight improved runtime with the 540 motors but could be some weight and some design.


I feel in general sensorless are faster. They are not restricted by the sensor. I have seen sensored motors on motor testers. They hit a max RPM and stay there. The sensors control the max RPM. You don't have this control in sensorless so they can spin up a little higher. All the raw speed guys run sensorless for this reason. I am not bashing sensorless here. Again there are many great systems out there that work great. They cost little less and are more then capable of getting the job done. It is hard to argue that sensored is not better though from a control/consistancy stance. One of the cool features of the RX8 is the D2 mode that switches between these two modes to give a best of both worlds. There are other speedo's that do this as well but most are one or the other.

Bondonutz

iTrader: (48)

@ Casper

A very civilized post, thank you. Good to see someone state facts and opinons rather than just spouting off "sensorless blows" etc etc like a typical fan boy.

Casper

iTrader: (34)

Thanks.

Brazman

If a motor had all windings identical, no variance in an clearances, perfect balance, perfect magnet spacing, perfect flux fields and the hall sensors were all identical then sensored would probably be more efficient. Sensorless allows for all of these imperfections by firing the coils at the correct time regardless. With the correct timing once a sensorless motor is at sufficient speed it will be more efficient. Sensored motors will always be more efficient (and consistent like casper says) at very low motor speeds.

lowroad

iTrader: (79)

Well, you're correct because I have run my tenshock 4000kv / SC8 combo (unsensored) vs my club presidient's Tekin pro4 4000kv/rx8 (sensored)combo, and guess what? Not a lick faster. Dead even down the 150 ft. or so straight. Neither had an inch on the other. im on 13T pinion, and he's on a 14T. So, some will scoff, I've seen it, and it's true. No noticeable difference in ability to clear jumps, run up, nothing. Maybe a smidge smoother at lower, VERY low speeds, but aside from that, meh.

Stuntbikemike

iTrader: (21)

Going from sensorless to sensored, made a hugh difference at slow speed. It went from skipping in the corners to smooth sweeping in the corners. I will never go back to sensorless. I suppose thats why they are priced different. If you havent tried it, you should. Just like DSM2, just adds more control.

Salad, good to see you did what was right.

isarctard

iTrader: (99)

I have seen it stated in this thread that the Losi Team racers use the plastic front chassis brace and in the rear use the torque rod. Could someone tell me why the plastic brace is used in the front over the aluminum one?

Moogumby

iTrader: (32)

Sent you a pm on it.

and thanks bashem for the info.

Bob Moore

iTrader: (68)

Thanks Casper for the straight forward answer.

Nice to have someone like yourself on her giving there time to help all of us out.

lowroad

iTrader: (79)

Personally, I went back to stock plastic because its a bit lighter. 5 grams or so I believe, if I remember correctly. I wieghed them myself beore the swwitch. Doesn't sound like much, and I'm not a weight nazi with this thing, but if I am going to shave weight, I want it off the front of this truck. Team drivers may have a different reason.

D.a.v.e

iTrader: (8)

These look a lot like the ones on the losi crawler? Wonder if they are a different size?

larlev

iTrader: (4)

Agreed......For us weekend hackers it doesn't matter what motor we run when we spend too much time on our lid.
Sensored/uncensored....blah, blah. When I can run consistent laps, then I'll look at what motor may or may not be faster.

D.a.v.e

iTrader: (8)

Wondering if you had a chance to run the pro4 yet? Would like to know how it compares to the Novak?